Instruction Manual for VIESSMANN models including: Vitodens 200 Natural Gas Combination Boiler, Vitodens 200, Natural Gas Combination Boiler, Gas Combination Boiler, Combination Boiler, Boiler
27 dic 2021 — This boiler requires fresh air for safe operation and must be installed with provisions for adequate combustion and ventilation air (in accordance with ...
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DocumentDocumentStart-up/Service Instructions
for use by heating contractor Vitodens 200, WB2 Series Wall-mounted, gas-fired condensing boiler For natural gas and liquid propane Heating input NG 55 to 230 MBH
16 to 67 kW Heating input LP 55 to 214 MBH
16 to 63 kW
VITODENS 200 r
5285 961 - 02 08/2021
Product may not be exactly as shown
IMPORTANT
Read and save these instructions for future reference.
Please file in Service Binder
Safety
Safety, Installation and Warranty Requirements
Vitodens 200 WB2 Service
Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).
Product documentation Read all applicable documentation before commencing installation. Store documentation near boiler in a readily accessible location for reference in the future by service personnel.
For a listing of applicable literature, please see section entitled "Important Regulatory and Safety Requirements".
Warranty Information contained in this and related product documentation must be read and followed. Failure to do so renders the warranty null and void.
Carbon monoxide Improper installation, adjustment, service and/or maintenance can cause flue products to flow into living space. Flue products contain poisonous carbon monoxide gas.
For information pertaining to the proper installation, adjustment, service and maintenance of this equipment to avoid formation of carbon monoxide, please see subsection entitled "Mechanical room" and "Venting requirements" in the "Installation Instructions".
Licensed professional heating contractor The installation, adjustment, service and maintenance of this equipment must be performed by a licensed professional heating contractor. Please see section entitled "Important Regulatory and Installation Requirements".
Advice to owner Once the installation work is complete, the heating contractor must familiarize the system operator/ ultimate owner with all equipment, as well as safety precautions/requirements, shutdown procedure, and the need for professional service annually before the heating season begins.
WARNING
Installers must follow local regulations with respect to installation of carbon monoxide detectors. Follow the Viessmann maintenance schedule of the boiler contained in this manual.
WARNING
This boiler requires fresh air for safe operation and must be installed with provisions for adequate combustion and ventilation air (in accordance with local codes and regulations of authorities having jurisdiction).
Do not operate this boiler in areas with contaminated combustion air. High levels of contaminants such as dust, lint or chemicals can be found at construction sites, home renovations, in garages, workshops, in dry cleaning/laundry facilities, near swimming pools and in manufacturing facilities.
Contaminated combustion air will damage the boiler and may lead to substantial property damage, severe personal injury and/or loss of life. Ensure boiler/burner is inspected and serviced by a qualified heating contractor at least once a year in accordance with the Service Instructions of the boiler.
Operating and Service Documentation
It is recommended that all product documentation such as parts lists, operating and service instructions be handed over to the system user for storage. Documentation is to be stored near boiler in a readily accessible location for reference by service personnel.
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Vitodens 200 WB2 Service
Safety General Information Start-up and Service
Troubleshooting Additional information
Table of Contents
Page
Safety, Installation and Warranty Requirements..............2
Important Regulatory and Installation Requirements........4 About these Service Instructions..................................5 Necessary Tools.........................................................5 Removing and Reinstalling Front Enclosure Panel and Cover Panel...............................................................6 Fill Heating System with Water....................................7
Select Language ...................................................... 9 Heating Contractor Address Input .............................. 9 Select Appropriate Gas Type.....................................10 Measure Static Pressure and Running Pressure .......... 10 How the Vitodens 200 Boiler Operates ..................... 12 Check CO2 Setting ................................................ 13 Clock Natural Gas Meter ...........................................14 Check Orifice Size ....................................................14 Check all Primary and Secondary Circuit Connections for Leaks.................................................................15 Perform Combustion Analysis ....................................15 Check Venting System for Leaks (circular air gap measurement) For sealed combustion, coaxial vent only. ..15 Disassemble Burner and Check Burner Gasket ..............16 Visually Check the Exterior of the Burner Mesh Assembly .16 Replace Burner Mesh Assembly..................................16 Check and Adjust Ignition and Ionization Electrode .......17 Check Condensate Drain ...........................................17 Check Neutralization Unit ..........................................18 Clean Combustion Chamber/Heat Exchanger Surfaces, and Mount Burner ....................................................18 Check Diaphragm Expansion Tank and System Pressure .19 Check Functioning of Safety Valves............................19 Check Electrical Connections .................................. 19 Check Gas Pipes and Fittings for Leaks..................... 20 Measure Ionization Current .......................................20 Verify Programming Unit System Coding Addresses ... 20 Check Extension Kit for Heating Circuit with Mixing Valve . 21 Check Dekamatik-HK ............................................. 22
Troubleshooting Steps ..............................................23 Diagnosis ................................................................24 Correction ...............................................................34
Technical Data .........................................................40 Burner Control Unit LGM 29.XX .................................41 Control Unit for Weather-Responsive Operation ............42 Jumper Assignment and Codings ...............................65 Replacement of Circuit Board VR20 ............................66 Replacement of Burner Control Unit LGM 29................67 Wiring Diagram ........................................................69 Parts Lists ...............................................................70 Maintenance Record .................................................73 Lighting and Operation Instructions.............................74
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General Information
Important Regulatory and Installation Requirements
Vitodens 200 WB2 Service
Codes
The installation of this unit shall be in accordance with local codes or, in the absence of local codes, use CAN/ CSA-B149.1 or .2 Installation Codes for Gas Burning Appliances for Canada. For U.S. installations use the National Fuel Gas Code ANSI Z223.1. Always use latest editions of codes.
In Canada all electrical wiring is to be done in accordance with the latest edition of CSA C22.1 Part 1 and/or local codes. In the U.S. use the National Electrical Code ANSI/ NFPA 70. The heating contractor must also comply with both the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1, and the Installation Code for Hydronic Heating Systems, CSA B214-01, where required by the authority having jurisdiction.
Instructing the system user
The installer of the system is responsible to ensure the system operator/ultimate owner is made familiar with the system functioning, its activation, and its shut-down.
The following topics must be covered: - Proper system operation sequence. - Explain the equipment. - Demonstrate an emergency shut-down, what to do
and what not. - Explain that there is no substitute for proper
maintenance to help ensure safe operation.
Initial start-up
Initial start-up must be performed by a qualified heating contractor. Proper completion of the Maintenance Record by the heating contractor is also required.
The Maintenance Record is located in the Service Instructions.
Working on the equipment
The installation, adjustment, service, and maintenance of this boiler must be done by a licensed professional heating contractor who is qualified and experienced in the installation, service, and maintenance of hot water boilers. There are no user serviceable parts on the boiler, burners, or control.
Please carefully read this manual prior to attempting start-up, maintenance or service. Any warranty is null and void if these instructions are not followed.
For information regarding other Viessmann System Technology componentry, please reference documentation of the respective product.
We offer frequent installation and service seminars to familiarize our partners with our products. Please inquire.
Ensure main power supply to equipment, the heating system, and all external controls has been deactivated. Close main gas supply valve. Take precautions in all instances to avoid accidental activation of power during service work.
The completeness and functionality of field supplied electrical controls and components must be verified by the heating contractor. These include low water cut-offs, flow switches (if used), staging controls, pumps, motorized valves, air vents, thermostats, etc.
Technical literature
Literature for the Vitodens boiler: - Technical Data Manual - Installation Instructions - Start-up/Service Instructions - Operating Instructions and User's Information Manual - Instructions of other Viessmann products utilized and
installed - Installation codes mentioned in this manual
Leave all literature at the installation site and advise the system operator/ultimate owner where the literature can be found. Contact Viessmann for additional copies.
This product comes with several safety instruction labels attached. Do not remove! Contact Viessmann immediately if replacement labels are required.
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Vitodens 200 WB2 Service
About these Service Instructions
General Information
Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include "WARNING", "CAUTION", and "IMPORTANT". See below.
WARNING
Indicates an imminently hazardous situation which, if not avoided, could result in death, serious injury or substantial product/property damage.
Warnings draw your attention to the presence of potential hazards or important product information.
CAUTION
Indicates an imminently hazardous situation which, if not avoided, may result in minor injury or product/ property damage.
Cautions draw your attention to the presence of potential hazards or important product information.
IMPORTANT
Helpful hints for installation, operation or maintenance which pertain to the product.
This symbol indicates that additional, pertinent
information is to be found.
This symbol indicates that other instructions must be referenced.
Necessary Tools
Testing/analysis equipment (Use only calibrated equipment)
H Multimeter to measure 0 - 230V, 0 - 12A AC and 0-100 mA DC
H Flue gas analyzer to measure % CO2 or O2 (i.e. Bacharach fluid samplers or suitable electronic analyzer)
H Manometer to measure gas pressure 0 to 11 "w.c. (accurately) and up to 28 "w.c. gas pressure (or a nonelectric Magnehelic® manometer may also be utilized)
H Stack thermometer 0 to 500°F (0 to 260°C)
H Bacharach calculator or suitable tables to calculate efficiency
H Carbon monoxide measuring equipment 0 to 400 ppm
Cleaning supplies H Plastic hand brush H Rags
Special items H Approved leak detection fluid for natural gas and
liquid propane gas H Pipe joint sealant
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General Information
Vitodens 200 WB2 Service
Removing and Reinstalling Front Enclosure Panel and Cover Panel
Some of the following start-up/service steps require the removal of the front enclosure panel and the cover panel. To avoid personal injury and/or product damage of any kind please follow the instructions below carefully when removing or reinstalling the front enclosure panel and cover panel.
To remove front enclosure panel and cover panel proceed as follows:
1. Close main gas supply valve.
2. Open flip-down cover of front enclosure panel (by exerting slight pressure with fingertip) and switch off system on/off switch.
3. Turn off power supply to boiler and ensure that power supply cannot be activated during the duration of the start-up/service work.
4. Unlock enclosure panel by giving cover lock a quarter turn.
5. Remove burner cover panel by unlocking the two pull-down latches located on the bottom of the panel, and slide out panel.
6. Attach front enclosure panel.
7. Secure in place by rotating slotted screw.
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Vitodens 200 WB2 Service
Fill Heating System with Water
Air vent
Start-up and Service
1. Open system isolation valves (if installed). Note: Before filling the heating system with water, check that all necessary flow check valves are installed.
2. Check inlet pressure of the diaphragm expansion tank. If the nitrogen pressure of the precharged expansion tank is less than the static pressure of the system, inflate membrane pressure to slightly exceed pressure of system. The static pressure required at the tank is based upon the static height of the system. The system fill pressure value must be equal to the expansion tank pressure value at approx. 60ºF/15.6ºC.
3. To remove debris and/or sludge ensure that the system piping is flushed out. Failure to do so could cause settlement in the boiler causing overheating and damage not covered by warranty. System fill pressure must be approximately 3 psig higher than the static head when the system is cold.
4. Optional: Fill the heating system with water at the boiler filling and drain tap A and drain air completely from the system at manual air bleed valve B (use supplied key) as per the Vitodens 200 Installation Instructions. Max. boiler operating pressure ......45 psig Min. boiler operating pressure .......12 psig Pressure relief valve ....................30 psig
Water treatment should be considered in areas where it is known that boiler feed water contains a high mineral content and hardness. In areas where freezing might occur, an antifreeze may be added to the system water to protect the system. Please adhere to the specifications given by the antifreeze manufacturer. Do not use automotive silicate-based antifreeze. Please observe that an antifreeze/water mixture may require a backflow preventer within the automatic water feed and influence components such as diaphragm expansion tanks, radiation, etc. A 40% antifreeze content will provide freeze-up protection to -10°F/-23°C. Do not use antifreeze other than specifically made for hot water heating systems. System also may contain components which might be negatively affected by antifreeze. Check total system frequently when filled with antifreeze.
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Start-up and Service
Fill Heating System with Water (continued)
Vitodens 200 WB2 Service
5. Check system pressure and open ball valve E.
6. Shut off the boiler from the heating system on heating water side (close shutoff valve C).
7. Connect drain hose to drain valve B or D.
8. Open drain valve B or D and vent the boiler with system pressure until noise due to the presence of air is eliminated.
9. Close drain valve B or D and open ball valve C.
10. Check system pressure.
11. Ensure proper/adequate fuel supply exists. Open gas shutoff valve.
Water flow Air vent
Check Power Supply Connection
IMPORTANT
In Canada all electrical wiring is to be done in accordance with the latest edition of CSA C22.1 Part 1 and/or local codes. In the U.S. use the National Electrical Code ANSI/ NFPA 70. The heating contractor must also comply with both the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI, ASME CSD-1.
Note: The outer conductor "L " and the neutral conductor "N" must not be interchanged. See wiring diagram in section entitled "Additional Information" in this manual.
A power module is supplied with the Vitodens 200 boiler, which requires a 120VAC power supply from a wall receptacle. The module contains a 120/230 VAC step-up transformer to power the Vitodens 200 with 230 VAC. Refer to the Installation Instructions shipped with the module for wiring details and/or Installation Instructions of the boiler.
Voltage range The voltage at connector fÖ must be 230V (see wiring diagram).
Neutral conductor The electrical power supply must have a neutral conductor.
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Vitodens 200 WB2 Service
Select Language (if required)
Start-up and Service
Comfortrol Menu-driven programming unit
Open cover:
Menu option
Button
/ SYSTEM
"D"
/ FACTORY SETTING "A"
/ LANGUAGE
"C"
Select language.
Heating Contractor Address Input
Comfortrol Menu-driven programming unit. This option allows the system user to access name and telephone number of the heating contractor on the display (see Vitodens 200 Operating Instructions) almost immediately after a system fault has occurred.
Open the cover:
Menu option
Button
/ SYSTEM
"D"
/ INSTALLER SETUP
"C"
/ CODE PLEASE:
"B-C-C-B"
/ DIAGNOSIS
"A"
/ HEATING CONTRACTOR "C"
Position cursor as required using the "A" and "B" buttons. Select the required characters (number, letter, special character) by turning the "G" selector knob (turn clockwise or counterclockwise).
Sequence of available characters: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z = < > . : k ? , i / ( )
Characters already selected can be deleted with the space character "k" or overwritten with another character.
Upon exiting the input menu (INSTALLER SETUP "C"), name and telephone number of the heating contractor are automatically stored.
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Start-up and Service
Select Appropriate Gas Type
Vitodens 200 WB2 Service
1. Ensure that the fuel type listed on the boiler rating plate is the correct type for the installation being attempted.
2. Record fuel type in Maintenance Record on page 73.
The Vitodens 200 boiler is for use with gases whose characteristics fall within the following ranges. Do not use any other types of gas.
Heating value (gross) Btu/ft3
Specific gravity
Ultimate carbon dioxide (CO2) %
Natural gas 970 to 1100
0.57 to 0.70 11.7 to 12.2
Propane gas 2466 to 2542
1.522 to 1.574 13.73 to 13.82
Measure Static Pressure and Running Pressure
IMPORTANT
A CO measurement (see page 13) must be taken before and after working on gas appliances to eliminate risks to health and to guarantee the satisfactory condition of the system.
Static pressure
1. To measure static and/or running pressure remove burner cover panel as per the removal and reinstallation instructions on page 6 in these instructions.
2. Close gas shutoff valve (field supplied).
3. Loosen screw in test nipple "PE" A on the gas combination valve, do not remove completely. Connect manometer.
4. Open the gas shutoff valve.
5. Measure static pressure. Values must be: 14 "w.c. max. for NG 14 "w.c. max. for LP
6. Enter measured value into Maintenance Record on page 73 in this manual.
7. Start up boiler, using the on/off switch on the boiler control.
Measuring static gas supply pressure, using test nipple "PE"
IMPORTANT
The burner is automatically ignited and starts operation after a safety time has elapsed. During initial start-up, the unit may indicate a fault because of air in the gas supply pipe (especially for propane gas). After approx. 5 seconds, press the "EU" button to reset the burner. The ignition procedure is repeated. This boiler employs a direct spark ignition system.
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Vitodens 200 WB2 Service
Measure Static Pressure and Running Pressure (continued)
Start-up and Service
Running pressure
8. Measure the running pressure; value must be: Use suitable measuring instruments calibrated with a minimum resolution of 0.04 "w.c. for measuring the running pressure.
Running supply pressure with
Corrective action
Natural gas
Propane gas
under 4 "w.c. (WB2-44) under 7 "w.c. (WB2-60)
under 11 "w.c.
Do not attempt adjustment. Call local gas utility to increase pressure.
4 to 14 "w.c. (WB2-44) 7 to 14 "w.c. (WB2-60)
11 to 14 "w.c.
Start up boiler.
over 14 "w.c.
over 14 "w.c.
Do not attempt adjustment. Call local gas utility to decrease pressure. Boiler valve must not be exposed to pressure over 14 "w.c.
Measuring static gas supply pressure, using test nipple "PE"
9. Enter gas type into Maintenance Record on page 73 in this manual.
10. Switch off the heating system on/off switch on the boiler control unit (boiler is shut down), close the gas shutoff valve, remove the manometer and re-tighten the screw in the test nipple "PE" A.
11. Open gas shutoff valve and check that the test nipple "PE" and all gas connections are gas-tight.
WARNING
Ensure that there is no open flame in the room.
WARNING
Never purge a gas line into a combustion chamber. Never use matches, candles, flame, or other sources of ignition for purpose of checking leakage. Use a soap and water solution to check for leakage. A failure to follow this warning could result in fire, explosion, personal injury or loss of life.
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Start-up and Service
How the Vitodens 200 Boiler Operates...
Vitodens 200 WB2 Service
The MatriX burner blower and the combination gas valve are factory calibrated and pre-adjusted for optimum boiler performance at all firing rates through a non-mechanical, pneumatic modulating link between combustion air and gas flows. Blower speed is automatically increased or decreased based on heat demand and venting system resistances, thereby regulating the amount of combustion air drawn. The pneumatic modulating link between air and gas introduces the required amount of gas for correct combustion to meet the current heat demand, based on a linear relationship between P air and P gas. Optimum combustion air flow rate is recognized and monitored by the differential air pressure sensor (transducer). The output voltage signal of the transducer is analyzed for logic by the LGM 29.XX burner ignition control unit. The LGM 29.XX unit contains preprogrammed performance curves and operational safety parameters unique for every boiler model. See page 47 for sequence of operation.
Flue gas adaptation function
The Vitodens employs a flue gas adaptation function. This unique function records, processes, and reacts in real time to fluctuations in pressure drops in the vent pipe during normal operation caused by partial pipe blockages due to ice formation at the vent termination, debris and/or sudden high winds. Such increase in pressure drop, if not promptly corrected, will reduce the combustion air flow rate, and hence lead to unstable combustion. The differential air pressure sensor (transducer) records such pressure drops and supplies voltage signals to the LGM 29.XX burner ignition control unit which, in turn (based on stored performance curves and safety parameters), initiates prompt adjustment of the blower rotational speed, thus readjusting the combustion air flow rate for optimum combustion. The same automatic adaptation logic applies if combustion air is reduced (or increased) due to slower (or faster) blower speed resulting from line voltage drops (or increases) below (or above) the threshold of 85% (or 110%).
Do not adjust screws X and Y!
WARNING
FOR FACTORY CALIBRATING PURPOSES, THE COMBINATION GAS VALVE IS EQUIPPED WITH ADJUSTMENT SCREWS X AND Y. DO NOT ATTEMPT TO ADJUST OR READJUST THESE SCREWS. ANY ATTEMPT TO TAMPER WITH FACTORY PRE-ADJUSTED SETTINGS WILL LEAD TO UNSTABLE OPERATION AND WILL AFFECT BOILER WARRANTY.
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Vitodens 200 WB2 Service
Check CO2 Setting
Start-up and Service
The Vitodens 200 boiler is factory preset for operation with natural gas or propane. It is recommended that a CO2 check be performed at the boiler vent pipe adaptor as part of the initial start-up/maintenance procedure.
IMPORTANT
The MatriX burner of the Vitodens 200 is preset for the entire gas group. No adjustment or readjustment of the burner is required.
IMPORTANT
Do not use the emissions test switch "S" to trigger a call for heat. Depending on the gas type, the CO2 value lies within the range of:
6.6 to 10.0% for natural gas approx. 10.0% for LP The CO2 value measured must be compared with the above CO2 value ranges of the individual gas type.
If the CO2 value measured lies more than 1% outside the stated range for NG, or 0.5% outside the stated range for LP, perform the following steps:
Check that correct orifice was used (see subsection entitled "Check orifice size" on page 14 and section "Technical Data" on page 40 of this manual). Check the venting system for leaks (see subsection entitled "Check venting system for leaks" on page 15 of this manual).
1. Connect flue gas analyzer to boiler vent pipe adaptor A ("Flue gas" measurement opening).
2. Open the gas shutoff valve and start up the boiler.
3. Trigger a call for heat by adjusting the setpoint value.
Control unit type
Control unit for weathercompensated mode with standard programming unit
4. Select the lower rated thermal load and check the C02 content
5. Select the upper rated thermal load and check the C02 content If value deviates by more than 1%, see page 15
6. Terminate the setting mode
· Select the required heating program.
· Set rotary selector to the required value.
· Enter actual values into the service report.
· Close the test port.
Control unit for weathercompensated mode with menu-guided Comfortrol programming unit
SYSTEM "D" INSTALLER
SETUP
"C"
CODE PLS "B-C-C-B"
DIAGNOSIS "A"
RELAY TEST "A"
With menu item
CONTINUE " A"
up to code
10: MODULATION
<ST.90> CLOSED BURNER
<ST.41> ON
With menu item CONTINUE "A" up to code 11: MODULATION <ST.90> OPEN BURNER <ST.41> ON
· Close the programming unit.
· Enter actual values into the service report.
· Close the test port.
7. Exit the setting mode · Close cover of programming unit. · Enter the measured values into the Maintenance Record on page 73 in this manual. · Close flue gas measurement opening A.
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Start-up and Service
Clock Natural Gas Meter
Vitodens 200 WB2 Service
Clock natural gas meter to verify input 1. Ensure all other gas equipment served by the meter
is turned off during timing of gas input to the Vitodens 200 boiler.
2. Measure the time in seconds it takes for the boiler to use 10 cu. ft. of gas. Divide 3600 x 10 by the number of seconds and you get the number of cu. ft. of gas used per hour. Multiply this number by the heating value of the gas to obtain Btu per hour input.
IMPORTANT
A boiler underfired by 5% is acceptable. Do not overfire the boiler.
CAUTION
Always contact your gas utility to obtain the correct heating value before clocking the meter.
For example: A Vitodens 200-W 11-44 boiler (172 000 Btu/h input) requires 209 seconds to use 10 cu. ft. of natural gas. After contacting the local utility, you will find the heating value is 1000 Btu per cu. ft. Therefore, 3600 x 10/290 x 1000 { 172 000 Btu/h input. Therefore, the boiler input is correct.
Burner input formulas (for low altitude only): INPUT=(3600÷t) x 1000 where t=TIME (sec.) for 1 ft.3 INPUT=(3600 x .01 x 1000 x 35.31)÷T where T = TIME (sec.) for .01 m3 natural gasQuis ipiende llabo.
Check Orifice Size
1. Remove burner cover panel (if still installed) as per the removal and reinstallation instructions on page 6 in this manual, and reinstall panel upon completion of service work.
2. Loosen screws A and take the gas orifice holder C out of the fitting.
3. Read orifice size stamped on the orifice body and cross-reference to table below. If wrong orifice is installed, proceed to next step.
4. Push the gas orifice B sideways out of the gas orifice holder C. Snap new and correct gas orifice into gas orifice holder and push into the gas train. See section entitled "Technical Data" on page 40 of this manual for information on gas orifices.
IMPORTANT
Place O-ring E in groove on new gas orifice B.
5. Tighten screws A. Tighten to a torque of 1.1 lb.ft./1.5 Nm.
6. Check all gas connections for leaks with an approved leak test solution.
Overview of orifices
Boiler model
WB2 11-44
Natural gas
E44
Liquid propane
P44
WB215-60 E60 P60
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Vitodens 200 WB2 Service
Start-up and Service
Check all Primary and Secondary Circuit Connections for Leaks
Check heating system and domestic hot water connections (if applicable). Ensure all connections are pressure tight. Correct any leaks found on fittings, pumps, valves, etc.
Perform Combustion Analysis
IMPORTANT
A CO measurement (see page 13) must be taken before and after working on gas appliances to eliminate risks to health and to guarantee the satisfactory condition of the system.
Record the measured combustion values in the sequence stated in the Maintenance Record on page 73 in this manual.
Check Venting System for Leaks (circular air gap measurement) For sealed combustion, coaxial vent only.
A Combustion air measuring point
Viessmann strongly recommends that the heating contractor perform a simplified leak test during boiler start-up. For this purpose it is sufficient to measure the CO2 concentration of the combustion air in the coaxial gap of the air intake pipe. The vent pipe is considered sufficiently leak-proof if a CO2 concentration in the combustion air no higher than 0.2% or an O2 concentration no lower than 20.6% is measured. If higher CO2 values or lower O2 values are measured, check venting system thoroughly.
Note: The vent pipe adaptor comes with two measurement ports, one for combustion air-intake measurement and one for flue gas measurement.
Note: This test is not applicable for single - wall venting system (non-sealed combustion).
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Start-up and Service
Disassemble Burner and Check Burner Gasket
Vitodens 200 WB2 Service
1. Remove burner cover panel (if still installed) as per the removal and reinstallation instructions on page 6 in this manual, and reinstall panel upon completion of service work.
2. Switch off the heating system switch on the control unit and the power supply.
3. Close gas shutoff valve and secure.
4. Disconnect electrical cables from fan motor A, differential air pressure sensor B, combination gas valve C, ionization electrode D, ignition transformer E and grounding F.
5. Remove two screws G to disconnect gas line from gas valve.
6. Loosen six hexagon socket head cap screws H and remove burner.
7. Check burner gaskets for damage (see Parts List) and replace if required.
CAUTION
Do not lay burner on burner mesh assembly (wire mesh)!
Visually Check the Exterior of the Burner Mesh Assembly
To check the exterior of the burner mesh assembly for physical damages, such as dents, corrosion and/or abnormally large holes:
1. Remove burner cover panel, if still installed (see page 6). Reinstall panel upon completion of service work.
IMPORTANT
Do not replace gasket D when visually inspecting the exterior of the mesh assembly.
Replace Burner Mesh Assembly (if wire mesh is damaged)
1. Remove electrodes A. 2. Turn thermal insulation ring B clockwise and remove.
3. Unsrew the eight Torx screws and remove burner mesh assembly and assembly gasket .
4. Remove existing burner mesh assembly gasket E.
5. Fit new burner mesh assembly with the new gasket and tighten with the eight Torx screws. Tighten to a torque of 3.3 lb.ft. / 4.5 Nm.
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Vitodens 200 WB2 Service
Check and Adjust Ignition and Ionization Electrode
Start-up and Service
1. Remove burner cover panel (if still installed) as per the removal and reinstallation instructions on page 6 in this manual, and reinstall panel upon completion of service work.
2. Check electrodes for wear and contamination.
3. Clean electrodes with small brush or emery paper.
CAUTION
Do not damage wire mesh when cleaning.
4. Check clearances. If clearances are not satisfactory or the electrodes are damaged, replace electrodes and gasket A and align. Tighten fastening screws for the electrodes to a torque of 1.5 lb.ft. / 2 Nm.
Check Condensate Drain
Legend A Discharge tubing B Flexible discharge tubing C Siphon trap
Ensure condensate drains freely (e.g. at siphon trap C). If necessary, clean siphon trap.
IMPORTANT
If the condensate does not drain freely, condensate will accumulate in bottom part of boiler resulting in a burner shut-down (fault message).
Installation Instructions Neutralization Unit (if applicable)
17
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Start-up and Service
Check Neutralization Unit (if applicable)
Vitodens 200 WB2 Service
1. Check the pH value of the condensate with pH measuring strip. If the pH value is less than 6.5, replace granulate.
IMPORTANT
pH measuring strip must be field supplied. 2. If contaminated: Rinse neutralization unit with tap water. 3. Add granulate as marked.
IMPORTANT
The granulate is consumed as it neutralizes the condensate. The red marking indicates the min. filling level.
Installation Instructions Neutralization Unit.
Clean Combustion Chamber/Heat Exchanger Surfaces, and Mount Burner
WARNING
Follow cleaning agent manufacturer's safety instructions and wear appropriate protective equipment.
1. Remove burner cover panel (if still installed) as per the removal and reinstallation instructions on page 6 in this manual, and reinstall panel upon completion of service work.
2. If necessary, clean the combustion chamber A and heat exchanger surfaces B with a brush and/or rinse with water. Use solvent-free cleaning agents to remove residues:
Remove deposits of soot with alkaline agents containing tenside.
Remove coatings and (yellowish brown) surface discoloration with phosphoric acid-based "Antox 75 E Plus", or citric acid-based CitriSurf 3050 by Stellar Solutions Inc.
Rinse thoroughly with water. Note: Be careful not to scratch parts which are in
contact with flue gas. Use plastic brushes, not wire brushes! Follow Material Safety Data Sheet (MSDS) of the cleaning agent manufacturer. The cleaning agents must not contain hydrocarbon-based solvents or potassium.
3. Mount burner and tighten diagonally to a torque of 2.8 lb.ft. / 4 Nm (four flange locknuts).
4. Fasten threaded connection for the gas connection hose with a new gasket or O-ring.
IMPORTANT
Perform leak test.
5. Connect electrical cables to corresponding parts.
5285 961 - 02
18
Vitodens 200 WB2 Service
Check Diaphragm Expansion Tank and System Pressure
Start-up and Service
Perform check with the system cold.
1. Drain boiler/system and reduce pressure until the manometer reading is "0".
2. If the nitrogen pressure of the precharged expansion tank is less than the static pressure of the system, inflate membrane pressure to slightly exceed pressure of system. The static pressure required at the tank is based upon the static height of the system. The system fill pressure value must be equal to the expansion tank pressure value at approx. 60ºF / 15.6ºC.
Example: Static head of 33 ft. / 10 m (distance between boiler and topmost heat emitter surface) corresponds to a static pressure of 1 bar / 15 psig.
3. Top up with water until filling pressure is higher than the inlet pressure of the diaphragm expansion tank. With the system cold, the filling pressure must be approx. 3 psig higher than the static pressure. Max. operating pressure: .............45 psig Min. operating pressure: ..............12 psig
4. When starting up the system for the first time, mark this value as the minimum filling pressure on the manometer. A lower manometer reading usually indicates loss of water due to leakage. All leaks must be repaired.
Check Functioning of Safety Valves Check Electrical Connections
Ensure proper operation of low water cut-off(s) (if applicable), pressure relief valve, and pump(s).
Check pressure gage, air vent and pressure relief valve. Ensure that pressure relief valve does not leak and that it operates in accordance with information provided by the manufacturer.
Refer to maintenance instructions supplied with low water cut-offs, pumps, etc.
Flush float water type low water cut-offs (if used).
Follow local regulations with respect to backflow preventers.
If oil-lubricated pumps are used, ensure proper lubrication.
If motorized zone valves are used, refer to maintenance instructions provided with zone valves.
Ensure all plug-in connectors and strain reliefs make positive contact and are seated properly.
Installation Instructions Power Module
5285 961 - 02
19
Start-up and Service
Check Gas Pipes and Fittings for Leaks
Vitodens 200 WB2 Service
WARNING
The gas supply piping must be leak tested before placing the boiler in operation.
CAUTION
Ensure all joints of gas line are pressure tight and that gas valves do not leak when under normal operating pressure (use approved leak detection liquid).
Measure Ionization Current
IMPORTANT
Switch off heating system on the control unit before connecting the measuring instrument.
1. Remove burner cover panel (if still installed) as per the removal and reinstallation instructions on page 6 in this manual, and reinstall panel upon completion of service work.
2. Connect a DC A multimeter in series with the ionization cable as follows: a) Disconnect the socket of the ionization cable A from the ionization electrode B and connect to the plug of the multimeter via adaptor C. b) Connect additional ionization measuring cable D to the ionization electrode B and the socket of the multimeter. Note: The measurement can be made with a multimeter (measuring range 0 to 100 A).
3. Start up boiler to its maximum input: Turn emissions test switch "S" on the control unit to "h".
4. If the ionization current is less than 5 A check the electrode clearance (see page 17). check the power supply connection of the control unit.
Note: The minimum ionization current must be at least 5 A when the flame is formed (approx. 2-3 seconds after opening the gas combination valve).
5. After completing the measurement, turn emissions test switch to "a".
6. Enter the value measured in the Maintenance Record on page 73 in this manual.
Verify Programming Unit System Coding Addresses
The control unit must be adjusted to the system equipment. See page 42 onward for information on the programming unit.
For details on coding procedure and for an overview of the coding addresses, see page 45 onward.
5285 961 - 02
20
Vitodens 200 WB2 Service
Start-up and Service
Check Extension Kit for Heating Circuit with Mixing Valve
Checking the Viessmann 2-wire BUS and the data connection to Vitotronic 050
With Comfortrol programming unit
1. Check via Scan 1 on the programming unit whether the connected extension kit is recognized.
Calling up Scan 1
Open the cover:
Menu option SYSTEM OPERATING
STATUS CONTINUE
Button "D"
"B" "A" until "Scan 1" is displayed
Note: The third and fourth-placed digits from the left have the following meaning:
(__02__ = with burner control unit (__12__)= additionally with Vitocom 100 (__03__ = with burner control unit and variable
speed heat circuit pump (__13__)= additionally with Vitocom 100 (__06__ = with burner control unit and extension
kit for heating circuit with mixing valve (__16__)= additionally with Vitocom 100 (__07__ = with burner control unit, extension kit
for heating circuit with mixing valve and variable speed heat circuit pump (__17__)= additionally with Vitocom 100
2. If the extension kit is not recognized, check the coding of the heating system type (see page 45). Note: The extension kit is only recognized when connected via the KM-BUS, not when connected via the Viessmann 2-wire BUS.
Checking the Viessmann 2-wire BUS and the data connection to Vitotronic 050
With standard programming unit
1. Set the heating program selector switch to "T".
2. Set rotary selector "s" to "-6".
3. Simultaneously press keys "u" and "1-7".
4. Evaluate the dispay.
5. Check the correct installation if the extension module or Vitotronic 050 are not recognized. Note: A green LED on the expansion module flashes if the data bus is active. The data cable "X 5.3" "X 5.4" may be interchanged, if the LED is not lit.
5285 961 - 02
21
Start-up and Service
Vitodens 200 WB2 Service
Check Extension Kit for Heating Circuit with Mixing Valve (continued)
Legend A Rotational direction switch B Power supply switch "8"
Check Dekamatik-HK
22
Check mixing valve motor 1. Select rotational direction of the mixing valve motor.
Switch setting I for boiler return from left (factory default setting). Switch setting II for boiler return from right. 2. Relay test Switch power supply switch on the motor off and on again. The unit will perform the following self-test: Close mixing valve (150 sec) Pump ON (10 sec) Open mixing valve (10 sec) Close mixing valve (10 sec) After that normal control mode is resumed. 3. Observe the rotational direction of the mixing valve motor during the automatic relay test of the extension kit. Afterwards, position the mixing valve by hand in the "Open" setting. The supply temperature sensor mustnow measure a higher temperature. If the temperature is lower, either the rotational direction of the motor is incorrect or the mixing valve insert is incorrectly fitted.
Please reference Installation Instructions of Mixing Valve Actuator.
For boilers equipped with comfortrol menu driven programming unit
1. Check via Scan 2 on the programming unit whether the connected expansion module is recognized.
Calling up Scan 2
Open the cover:
Menu option
Button
SYSTEM
"D"
OPERATING STATUS "B"
CONTINUE
"A" until "Scan 2" is displayed
Expansion module The last-placed digit has the following meaning: 2____0 =Viessmann 2-wire BUS expansion module
not recognized
2____1 =Viessmann 2-wire BUS expansion module is recognized
Dekamatik-HK The second-placed digit from the lefthas the following meaning: _2____ =Extension kit for a heating circuit with
mixing valve or Dekamatik-HK1/-HK2 recognized
_3____ =Dekamatik-HK4 recognized
2. If the expansion module or the Dekamatik is not recognized, check that they were installed correctly. Note: A green LED will flash on the expansion module if the data BUS is intact. If the LED is not lit, the data line "X5.3"-"X5.4" may be incorrectly connected. See wiring diagram in section entitled "Additional Information".
5285 961 - 02
Vitodens 200 WB2 Service
Check Dekamatik-HK (continued)
Troubleshooting Steps
Troubleshooting
Check setting of rotary switch Dekamatik-HK1: The rotary switch on the communication module must be set to "4". Dekamatik-HK2: The rotary switch on the circuit board E4 must be set to "4". Dekamatik-HK 4: The rotary switch on circuit board E4.1 must be set to "4" and the rotary switch on circuit board E4.2 to "5". Please reference corresponding installation documentation for Dekamatik-HK.
1. Establish fault message or diagnose behavior of system. 2. Look for corresponding cause of fault in the
diagnostics table. Diagnosis Note: See page 24 for retrieval of fault codes from
the fault memory. for faults with fault display on control unit (see below). for faults without fault display on control unit (page 33). 3. Find corrective action in the table. 4. Perform corrective action (page 26).
5285 961 - 02
23
Troubleshooting
Diagnosis
Legend A Display window B Reset button C Burner fault indicator
Vitodens 200 WB2 Service
Comfortrol Menu driven programming unit Faults with fault display on control unit
Faults with fault display on control unit When a fault message is detected, FAULT flashes in the display of the programming unit with the cover closed.
To trace the fault 1. Open cover: FAULT SEARCH "A". Fault code is displayed.
Note: The fault message is cleared when "ACKNOWLEDGE" is selected. If an acknowledged fault is not corrected by 24:00 hrs on the same day, the fault message will reappear. The acoustic alarm system (only with optional expansion board installed), is not reactivated. The meaning of the fault codes is explained in the table starting on page 27.
2. Close the cover.
To reset the burner If red light is on or flashing:
1. Press the "EU" button once to reset the burner.
Find nature of sensor fault in plain language Note: Please refer to the diagnostics table starting on
page 27 for details on required action.
Open the cover:
Menu option MAIN MENU SYSTEM INSTALLER SETUP CODE PLEASE: DIAGNOSIS SCAN SENSORS
Button "D" "D" "C" "B-C-C-B" "A" "B"
Select defective sensor with the menu option CONTINUE "A".
5285 961 - 02
24
Vitodens 200 WB2 Service
Diagnosis (continued)
Troubleshooting
Fault code displayed on programming unit
Fault: F9 Fault: FD Fault: FE Fault: 02 Fault: 04 Fault: 05 Fault: 06 Fault: 07 Fault: 08 Fault: 14 Fault: 15 Fault: 0A Fault: 0B Fault: 0S Fault: OD Fault: OE Fault: OF Fault: CC
Fault history code displayed 249 253 254 002 004 005 006 007 008 020 021 010 011 012 013 014 015 204
Comfortrol Menu driven programming unit retrieval of fault codes from fault memory
1. Open the cover:
Menu option
Button
SYSTEM
"D"
INSTALLER SETUP "C"
CODE PLEASE:
"B-C-C-B"
CODING 2
"C"
Note: All settings are made in the "Installer Setup"
menu, containing "Coding 1" (the main coding
addresses in plain language) and "Coding 2" (all
coding addresses).
2. Select coding address "0B2" by pressing button "A" (CONTINUE) or "B" (BACK). With the "G" selector knob (CHANGE), set the value of the coding address to "001". Confirm the change with button "D". Changes which are made and confirmed in Coding 1 are automatically transferred to Coding 2 and vice versa.
3. Select coding address "0B3". The value which appears is the most recent fault code (value in brackets () in the diagnostics table).
4. Repeat step 2, but set value of "0B2" coding address to "002". The new value which appears under coding address "0B3" is the next fault code. Note: 10 fault codes can be scanned.
Display window
Reset button Burner fault indicator
Control unit for weather-responsive operation with programming unit
Control unit for weather-compensated mode with standard programming unit
5285 961 - 02
25
Troubleshooting
Diagnosis (continued)
Vitodens 200 WB2 Service
Sequence of operation and potential faults during each start-up cycle.
5285 961 - 02
26
5285 961 - 02
Vitodens 200 WB2 Service
Diagnosis (continued)
Diagnostics table: Faults with fault display on control unit
Fault message in display window Control unit for weather-responsive operation with programming unit FAULT: OUTDOOR TEMP. SENSOR
FAULT: OUTDOOR TEMP. SENSOR
FAULT: SUPPLY TEMP. SENSOR
FAULT: SUPPLY TEMP. SENSOR
FAULT: BOILER TEMP. SENSOR FAULT: BOILER TEMP. SENSOR FAULT: SUPPLY TEMP. SENSOR
FAULT: SUPPLY TEMP. SENSOR
FAULT: TANK TEMP. SENSOR
FAULT: TANK TEMP. SENSOR
FAULT: EXT.PROG.2
Standard control
U:1: 0
U:1: 8
U:2: 0
U:2: 8
U:3: 0 U:3: 8 U:4: 0
U:4: 8
U:5: 0 U:5: 8
U:6: 0 U:6: 8
U:6: 1 U:6: 9
Burner fault indicator (red)
OFF OFF OFF OFF OFF OFF OFF
OFF
OFF
OFF
ON
System behavior
Operates based on 32ºF/0ºC outdoor temperature. Operates based on 32ºF/0ºC outdoor temperature. Supply temperature of heating circuits too low. Supply temperature of heating circuits too low. Boiler cools down
Boiler cools down
Mixing valve is opened.
Mixing valve is closed.
DHW tank cools down.
DHW tank cools down.
Boiler cools down
Cause of fault
Short circuit outdoor temperature sensor Open circuit outdoor temperature sensor Short circuit low-loss header temperature sensor Open circuit low-loss header temperature sensor Short circuit boiler temperature sensor Open circuit boiler temperature sensor Short circuit supply temperature sensor
Open circuit supply temperature sensor
Short circuit tank temperature sensor
Open circuit tank temperature sensor
Internal BUS fault
Corrective action
Check outdoor temperature sensor (see page 34).
Check outdoor temperature sensor (see page 34).
Check supply temperature sensor (see page 35).
Check supply temperature sensor (see page 35).
Check boiler temperature sensor (see page 34).
Check boiler temperature sensor (see page 34).
See Installation Instructions Mix. Valve Actuator. See coding address "000" (see page 49). See coding address "0B8" (see page 57).
See Installation Instructions Mix. Valve Actuator. See coding address "000" See coding address "0B8"
Check tank temperature sensor (see page 35). See coding address "000" See coding address "0B8" .
Check tank temperature sensor (see page 35). See coding address "000" See coding address "0B8"
Replace VR20 (see page 65). Replace LGM 29 (see page 41). Replace entire control console.
Troubleshooting
27
28
Fault message in display window Control unit for weatherresponsive operation with programming unit FAULT: 70 RS/WS REMOTE CONTROL
FAULT: 78 RS/WS REMOTE CONTROL
FAULT: A1 KM-BUS BURNER CONTROL UNIT
FAULT: A2 FAULT: A4 KM-BUS HEATING CIRCUIT PUMP FAULT: A5 KM-BUS MIXING VALVE
FAULT: B1
FAULT: B2
5285 961 - 02
Standard control
U:7: 0 U:7: 8 U:A: 1 U:A: 1 U:A: 2 U:A: 4 U:A: 5
U:b: 2
Burner fault indicator (red)
OFF
OFF
Flashes
OFF OFF OFF
OFF OFF
System behavior
Operates based on 68ºF/20ºC desired daytime temperature, 58ºF/14ºC desired nighttime temperature. Operates based on 68ºF/20ºC desired daytime temperature, 58ºF/14ºC desired nighttime temp. Boiler operates in emergency mode (after approx. 30 min. BUS fault). Boiler cools down.
--
Pump runs at max. speed.
--
DIP switches A and B on back of are switched (e.g. A-A or B-B). Boiler cools down.
Cause of Fault
Short circuit WS/ RS remote control unit
Open circuit WS/ RS remote control unit or wrong coding
Internal BUS fault
Open circuit internal BUS connection
KM-BUS fault to Vitocom Open circuit BUS connection with variable speed heating circuit pump Short circuit open circuit BUS connection to extension kit for heating circuit with mixing valve
Sensor inputs are not read correctly
Corrective action
Check WS/RS remote control unit (see page 49).
Check WS/RS remote control unit (see page 49). Check proper system coding.
Verify connections X5.3 and X5.4 for mixing valve (if applicable). Check that circuit board VR20 is inserted properly and check field supplied connection (by proces of elimination if required). Check coding of LGM 29 component part. Replace circuit board VR20 or circuit board of burner control unit LGM 29*1. Check connection to Vitocom or Vitocom defective. Check line connections to variable speed heating circuit pump. Variable speed pump electronics might be defective. Check connection of extension kit for heating circuit with mixing valve (see page 22). Check coding for system with a mixing valve. Mixing valve might be defective.
Set DIP switches to factory default setting. See symbols on back of programming unit.
Check correct connection of sensors. Check for damage on wiring harnesses. Check whether circuit board VR20 is defective. If required, replace circuit board VR20*1
Troubleshooting
Diagnosis (continued)
Diagnostics table: Faults with fault display on control unit (continued)
Vitodens 200 WB2 Service
5285 961 - 02
Vitodens 200 WB2 Service
Diagnosis (continued)
Diagnostics table: Faults with fault display on control unit (continued)
*1 Displayed when fault codes retrieved from fault memory. 29
Fault message in display window Control unit for weatherresponsive operation with programming unit FAULT: B3
FAULT: B6 BURNER CONTROL UNIT DEFECTIVE FAULT: CC (204*1)
FAULT: C8
FAULT: C0
FAULT: E4 or E...
FAULT: F2
FAULT: F4
FAULT: F5
FAULT: F9 (249*1)
FAULT: FB
FAULT: FD (254*1)
Standard control
U:C: C
U:E: 4 or
U:E: .. U:F: 2 U:F: 4 U:F: 5 U:F: 9
U:F: d
Burner fault System behavior Cause of Fault indicator (red)
OFF OFF ON
OFF OFF OFF OFF OFF OFF OFF/ON Flashes
Setting via service Data points are not level not possible. stored; internal fault
VR20
Boiler cools down.
AD-converter of burner control unit defective; internal fault LGM 29
Burner control unit switches to lockout (due to large line voltage fluctuations).
Differential air pressure sensor / open circuit
Boiler does not activate.
Differential air pressure sensor / short circuit
Boiler does not activate.
Internal fault or fault with internal data protection
--
Fault in Dekamatik-HK
heating circuit
control unit connected
downstream
--
Error message to
Vitocom
communication unit
Variable speed pump signals a fault mode
Air in system (pump) or pump is seized
--
Error message
extension kit for
heating circuit with
mixing valve
Burner control switches to lockout.
Parameterization of burner control defective
--
Emergency operation
LGM 29
ON
Burner control
Parameterization of
switches to lockout. burner control defective
Corrective action
Replace circuit board VR20*1.
Replace burner control unit LGM 29*1.
Check wiring, replace sensor.
Check wiring, replace sensor.
Reset burner control unit.
Check Dekamatik-HK heating circuit control unit connected downstream and data transmission circuit. Check wiring connections. Check Vitocom communication unit.
Bleed air by opening air bleed on top of boiler. Check pump and boiler isolation valves are open. Check coding for extension kit and the extension kit itself. Check sensor s of mixing valve.
Replace circuit board of burner control unit LGM 29*1.
Check plug-in connection and circuit board VR20. Replace circuit board VR20 if necessary. Replace circuit board of burner control unit LGM 29*1.
Troubleshooting
Troubleshooting
Diagnosis (continued)
Diagnostics table: Faults with fault display on control unit (continued)
*1 Displayed when fault codes retrieved from fault memory. 30
Fault message in display window FAULT: FE (254*1)
FAULT: 02 (002*1) FAULT: 04 (004*1)
FAULT: 05 (005*1)
FAULT: 06 (006*1)
FAULT: 07 (007*1) FAULT: 08 (008*1)
Standard control
U:F: E
U:O: 2 U:O: 4 U:O: 5 U:O: 6
U:O: 7 U:O: 8
Burner fault System behavior indicator (red)
Cause of Fault
Corrective action
ON
Burner control
Internal
Check electrode settings.
switches to lockout fault burner
Check wiring harness plug X13 for proper
control unit or connection or damage.
interference
Check whether flue gas system is leak-tight.
If after corrective action fault "FE" still appears on
display replace LGM 29.
ON
Burner control
Safety chain
Check fixed high limit (see page 43). Bleed air from
switches to lockout was activated the heating system.
(fixed high limit)
ON
Burner control
Fan speed too Fan or fan electronics defective.
switches to lockout high at start
Replace LGM 29 and/or burner assembly.
(maximum fan
rpm exceeded).
ON
Burner control
Fan speed too Check fan and flue gas system.
switches to lockout low at start
(incorrect fan
rpm).
ON
Burner control
Air pressure
Check fan plug, fan, differential pressure sensor
switches to lockout threshold for
(see page 35)
ignition level is and inlet air damper (flapper).
not reached.
Check flue gas system for proper sizing and
Feedback
functioning.
voltage signal
to LGM 29 not
available.
ON
Burner control
Fan speed
switches to lockout incorrect.
Check fan and flue gas system.
ON
Burner control
Fan speed
Check fan and flue gas system.
switches to lockout too high prior
to ignition
(incorrect fan
rpm).
Vitodens 200 WB2 Service
5285 961 - 02
5285 961 - 02
Vitodens 200 WB2 Service
Diagnosis (continued)
Diagnostics table: Faults with fault display on control unit (continued)
*1 Displayed when fault codes retrieved from fault memory. 31
Fault message in display window FAULT: 09 (008*1) FAULT: 14 (020*1)
FAULT: 0A (010*1)
FAULT: 0B (011*1)
FAULT: 0C (012*1)
FAULT: 0D (013*1)
Standard control
U:O: 9 U:1: 4
U:O: A U:O: B U:O: C U:O: d
Burner fault System behavior indicator (red)
Cause of Fault
ON
Burner control
Fault fan speed
switches to lockout
ON
Burner control
No flame signal
switches to lockout
ON
Burner control
Basic level of
switches to lockout air pressure
threshold in
standby mode
not correct.
ON
Burner control
Severe wind
switches to lockout conditions in
Fan does not idle vent system.
after auto reset
(incorrect fan rpm).
ON
Burner control
Flame signal
switches to lockout still present
after switching
off
ON
Burner control
Reset button
switches to lockout "EU" pressed
repeatedly or
while burner is
running
Corrective action
Check fan and flue gas system.
Check electrical connections (see page 19). Purge air from gas line (for LP gas, purge air several times). Measure ionization current (see page 20). Check gas pressure (see page 10). Check gas combination valve (see page 10). Check ignition transformer. Check ignition electrodes (see page 17). Check condensate drain (see page 17). Check power supply polarity (L,N,G). Check proper grounding. Check differential air pressure sensor (see page 35). Check wiring harness and connection to air pressure sensor.
Protect outside wall vent termination from severe winds.
Check gas combination valve (see page 10). Check electrode block (see page 17).
Power ON/OFF boiler / acknowledge fault. Press reset button "EU" once.
Troubleshooting
32
Troubleshooting
Diagnosis (continued)
Fault message in display window FAULT: 25 FAULT: 26 FAULT: 35
FAULT: 94
FAULT: 95 FAULT: 51 FAULT: 59
Standard control
U:2: 5 U:2: 6 U:3: 5
U:9: 4
U:9: 5 U:5: 1 U:5: 9
Burner fault System behavior indicator (red)
OFF
Boiler operates with high
boiler water temperature.
OFF
Boiler operates with
continuous relay test.
OFF
Boiler does not activate.
OFF
Boiler does not activate.
OFF
Boiler does not activate.
OFF
No DHW function (gas
Combi boilers only).
OFF
No DHW function (gas
Combi boilers only).
Cause of Fault
Emissions test switch "S" turned to "h" for 30 minutes already. Setting mode for maximum or minimum rated input active for 30 minutes already. Reset button "EU" (pressed while burner is OFF) with emissions test switch "S" turned to "h". Basic level of air pressure threshold in stanby mode not correct.
Start-up prevented. DHW outlet sensor / short circuit
DHW outlet sensor / open circuit
Corrective action
Turn emissions test switch "S" to "a".
Set heating program selector switch to required operating mode or close cover on programming unit. Turn emissions test switch "S" to "a" and press reset button "EU" once.
Check differential air pressure sensor (see page 35). Check wiring harness and connection to air pressure sensor. Fault will clear if output signal of air pressure sensor is correct. Check wiring, water and gas pressures. Check sensor/wiring. See coding address "000" . See coding address "0B8" . Check sensor/wiring. See coding address "000" . See coding address "0B8" .
Vitodens 200 WB2 Service
5285 961 - 02
Vitodens 200 WB2 Service
Diagnosis (continued)
Troubleshooting
Diagnostics table: Faults without fault display on control unit
System behavior
Cause of Fault
Corrective action
Supply temperature too cold or too warm. Fuse
Check fuse (see page 38).
Variable speed heating circuit pump Check coding of heating circuit pump
Heating system type incorrectly coded Check coding of heating system type
Room temperature too cold or too warm. Thermostatic radiator valves
Check thermostatic radiator valves (see page 38).
Domestic hot water temperature too cold or too warm.
Circulating pump
Check circulating pump.
Boiler constantly switches on and off. Flue gas system leaking
Check flue gas system for leaks and perform leak test.
Diagnostics table: Faults on power module
System behavior Boiler has no power (Main power on/off switch on boiler is in "ON" position).
Heating pump does not operate (only with expansion board installed).
Cause of Fault
Corrective action
Main power on/off switch Check switch position.
Power supply or boiler is Ensure that power cord and power supply not electrically connected. cable to the boiler are plugged in properly.
Fuse F1
Replace fuse with same type and of same rating (T2A/250V, slow blow).
Electrical connection(s) has/have been made incorrectly.
Ensure that connections 20, 20A,21 and on the mother
board connections 20, 20A,21 and in the boiler
junction box are made correctly.
Fuse F2A
Replace fuse with the same type and of same rating (T4A/250V, slow blow).
5285 961 - 02
33
Troubleshooting
Correction
Vitodens 200 WB2 Service
Scanning the actual and desired temperatures Check outdoor temperature sensor 1. Disconnect connector "X6" from the control unit. 2. Measure resistance of outdoor temperature sensor A
at the disconnected connector between "X6.3" and "X6.4", and compare with resistance/outdoor temperature curve shown below. 3. If the value measured differs significantly from the curve, disconnect wires from the sensor and repeat the measurement directly on the sensor. 4. Depending on the result, replace cable or the outdoor temperature sensor.
Check boiler temperature sensor 1. Disconnect cables from boiler temperature sensor A.
2. Measure resistance of the boiler temperature sensor and compare with resistance/boiler water temperature curve shown below.
3. If the value measured differs significantly, replace the sensor.
IMPORTANT
As the sensor is in direct contact with the boiler water, the boiler must be drained before changing the sensor.
5285 961 - 02
34
Vitodens 200 WB2 Service
Correction (continued)
Legend A DHW tank temperature sensor B Low-loss header temperature sensor
Troubleshooting
Check DHW tank temperature sensor or low-loss header temperature sensor 1. Disconnect connector "X7" from the control unit. 2. Measure resistance of the tank temperature sensor
and compare with the curve. 3. If the value measured differs significantly, replace
the sensor. 4. Repeat above steps 1 - 3 for checking the low-loss
header temperature sensor.
Transducer power supply X14.3 . . . . . . . . . . . . . . . . Red X14.4 . . . . . . . . . . . . . . . . Yellow X14.5 . . . . . . . . . . . . . . . . Black Between red and black: . . . . 24VDC Between black and yellow: at standby . . . . . . . . . . . . . 0.2 to 0.3VDC at ignition . . . . . . . . . . . . . 0.7 to 1.0VDC at low fire . . . . . . . . . . . . . 0.5 to 0.6 VDC at high fire . . . . . . . . . . . . .3.5VDC
Check and replace differential air pressure sensor In case of fault messages regarding the differential air pressure sensor, check that;
the sensor was installed correctly. the electrical connections were made correctly. the O-rings in the adaptor are correctly positioned. the test nipples have been sealed with plugs. If the error message persists, replace sensor.
To check O-rings: 1. Disconnect electrical plug-in connection 164 A. 2. Remove sensor B by pulling off in an upward direction. 3. Check that the two O-rings C are correctly located
in the mountings D of the adaptor. 4. Insert connection nipples of the sensor in the adaptor
of the gas combination valve and snap into place. 5. Reconnect the electrical plug-in connection on the
sensor.
35
5285 961 - 02
Troubleshooting
Correction (continued)
36
Vitodens 200 WB2 Service
Relay test with comfortrol menu driven programming unit
Open cover:
Menu option SYSTEM INSTALLER SETUP CODE PLEASE: DIAGNOSIS RELAY TEST
Button "D" "C" "B-C-C-B" "A" "A"
Select required relay to check its function with the menu option CONTINUE "A" (see below).
Note: Those relays which are not mentioned have no significance. When the relay is selected, only the corresponding unit is addressed. If no call for heat is present, the burner is omitted from the relay test. For installations with Dekamatik-HK mixing valve control, refer to the Dekamatik-HK control manual.
Display
01 1st stage burner <PL41> ON
02 Heating circuit pump A <PL20> ON
03 Heating circuit pump B <PL20B> ON
04 DHW pump <PL21> ON
05 Not assigned
06 Not assigned
07 Mixing valve HC B <PL52B> CLOSED
08 Mixing valve HC B <PL52B> OPEN
10 Modulation <PL90> CLOSED Burner <PL41> ON
11 Modulation <PL90> OPEN Burner <PL41> ON
13 Additional heating pump <PL28> ON
14 Alarm output <PL56> ON
Meaning Without function (Burner on, pump not running) Circulating pump
Heating circuit pump with extension kit with mixing valve DHW heating pump
--Mixing valve CLOSED*1
Mixing valve OPEN*1
Burner (min. input) Circulating pump
Burner (max. input) Circulating pump
Additional heating pump*2
Alarm output*3
*1 Only in conjunction with mixing valve extension kit *2 If no low-loss header is installed, pump will be
operated as a DHW recirculating pump (see coding addresses "099" and "0B8"). If a low-loss header is installed, the pump will operate as a heating circuit pump (see coding address "0B8"). *3 Only in conjunction with expansion board (optional)
5285 961 - 02
Vitodens 200 WB2 Service
Correction (continued)
Troubleshooting
Relay test (standard programming unit) 1. Set the heating program selector switch to "T".
2. Select the required position using rotary selector "s".
Function
Three-way valve drive (DHW cylinder) Heating circuit pump A Heating circuit pump with extension kit for a heating circuit with mixer Mixer open Mixer closed OHW circulation pump No function Burner start with lower rated output and heating circuit pump ON Burner start with upper rated output and heating circuit pump ON
Rotary selector "s" N -1 -2
+1 +2 -4 -3 -5
-6
Flashing display U:0: 4 U:0: 2 U:0: 3
U:0: 8 U:0: 7 U:0: d U:0: 1 Display of boiler water temperature
Fault code display from the fault memory (see page 24).
3. Return the heating program selector and rotary selector "s" to their original positions.
5285 961 - 02
37
Troubleshooting
Correction (continued)
Vitodens 200 WB2 Service
Check safety fixed high limits (FHL) If the safety fixed high limits cannot be reset after an automatic lockout of the burner control unit, even though the boiler water temperature is below approx. 194ºF / 90ºC, perform the following steps:
Disconnect one cable from each of the fixed high limit switches A. Check continuity of the fixed high limit switches with a multimeter. Remove defective limit switches. Coat new limit switches with heat conductive paste and install. After start-up, press the reset button "EU" on the control unit.
Check fuse 1. Disconnect connector fÖ A in the control unit. 2. Remove fuse F3 (6.3 A) B by holding its grip and
pulling out of the base. 3. Check continuity of fuse with a multimeter.
Check thermostatic radiator valves Check operation and setting.
IMPORTANT
The thermostatic radiator valves must not be activated in a room in which the room temperature sensor is installed for room temperature dependent operation. In case of a weather-responsive control, with a room temperature sensor via the RS remote control unit, keep the thermostatic radiator valves fully open.
5285 961 - 02
38
Vitodens 200 WB2 Service
Correction (continued)
WS remote control sSetpoint value between terminal "9" and "10" m Setpoint value between terminal "9" and "11"
Troubleshooting
Check WS remote control unit (Accessory) Check RS remote control unit (Accessory)
The WS remote control unit is used for setting the desired room temperature values from any room in the building. The RS remote control unit is used for setting the desired room temperature values from the main living room (with room temperature dependent control).
Functionality check
Resistance measurement and control unit response test. If the presence of a fault is suspected in the customer's connecting cable, temporarily connect the remote control directly to the control unit and perform test. To calculate total resistance (NTC), add the actual value and the current resistance setpoint value.
IMPORTANT
In most cases, faulty behavior of the control unit is due to the installation of the RS remote control unit in an unsuitable location. This can lead to draft phenomena caused by cavities behind the remote control or by the stack effect of empty pipes. Wiring diagram: see section entitled "Additional Information".
RS remote control Room temperature sensor (NTC) curve between terminal "9" and "13"
5285 961 - 02
RS remote control sSetpoint value between terminal "10" and "14" m Setpoint value between terminal "11" and "14"
39
Additional Information
Technical Data
Vitodens 200 WB2 Service
Rated voltage: .............230 VAC Rated frequency: .........60 Hz Rated current: .............2.5 A~
Max. ambient temperature at operation: ............32 to 104ºF (0 to +40ºC) when storing and transporting: .....4 to +149ºF (20 to +65ºC)
Setting of adjustable electronic high limit ......167ºF (75ºC)
Setting of fixed high limit safety cut-out: .............210ºF (fixed setting) ..............99ºC
Main fuse: max. 16A
Power consumption Circulating pump: ......max. 115 W Burner: max. .............60 W Control unit: .............max. 10VA
WARNING
Always ensure the correct orifices are installed in the boiler. See table below. The boiler must achieve the output stated on the rating plate. Do not overfire the boiler.
Boiler Model
Natural gas CSA input CSA output/DOE heating capacity Net I=B=R rating*1
Propane gas CSA input CSA output/DOE heating capacity Net I=B=R rating*1
Min. gas supply pressure Natural gas Propane gas Max. gas supply pressure*2 Natural gas Propane gas Flue gas*3 Temperature (at boiler return water temp. of 86ºF/30ºC) at rated full load at rated partial load Temperature (at boiler water return temp. of 140ºF/60ºC) Max. natural gas flow rate
Max. propane gas flow rate
Burner orifices diameter Natural gas Propane gas
Standard heating boiler
Model No.
WB2 11-44
MBH kW
MBH kW
MBH
55-172 16-50
49-153 14-44 133
MBH kW
MBH kW
MBH
55-155 16-45
49-138 14-40 120
"w.c.
4
"w.c.
11
"w.c.
14
"w.c.
14
ºF/ºC ºF/ºC ºF/ºC
ft3/h m3/h ft3/h m3/h
Ø mm Ø mm
95/35 91/33 149/65
172 4.87
62 1.75
E44) 8.40 (P44) 6.10
WB2 15-60
80-230 23-67
71-205 21-60 178
37-112 11-33
33-101 10-30 166
7 11
14 14
104/40 95/35
158/70
230 6.51 85.6 2.42
E60) 9.00 (P60) 6.70
*1 Net I=B=R rating based on piping and pick-up allowance of 1.15. *2 If the gas supply pressure exceeds the maximum gas supply pressure value, a separate gas pressure regulator
must be installed upstream of the heating system. *3 Measured flue gas temperature with combustion air temperature of 68°F / 20°C.
40
5285 961 - 02
Vitodens 200 WB2 Service
Burner Control Unit LGM 29.XX
Program sequence
Additional Information
Standby Waiting time until next call for heat start. Differential air pressure sensor must be reset and the speed feedback signal (HALL) must record that fan is stationary.
Start-up and initial boiler run time. Start takes place when a call for heat is received from the temperature controller, provided no air pressure is detected. The fan motor receives voltage. The speed signal (HALL) and the differential air pressure voltage signal must be received by the burner control unit LGM 29.XX within approx. 70 seconds, otherwise a fault message is transmitted. During the initial boiler run time, self-tests take place within the burner control unit LGM 29.XX.
Pre-purge time The combustion chamber is flushed out by the fan.
Pre-ignition time Ignition spark is initiated.
Safety time The gas combination valve coils receive voltage (energized), flame monitoring is activated. Ignition is switched off after approx. 4 seconds. If the flame is not recognized during ignition, automatic lockout takes place.
Burner operation (green LED is lit) Burner operation begins after the safety time has elapsed, and flame recognition has taken place successfully. The burner control unit modulates from its ignition load according to the currently selected setpoint value. After controlled shutdown (heat demand is satisfied), auto reset to the standby mode takes place.
Shutdown The gas valve is de-energized. Internal tests are performed.
Test time Auto reset is the end of the shutdown phase after controlled switch-off. Auto reset also takes place after resetting, failure of the flame during operation or after a call for heat is terminated before the start of the safety time.
Safety chain (FHL) The fixed high limits must be closed at all times during the entire period of operation, otherwise automatic lockout takes place immediately. Burner control unit LGM 29.XX The burner control unit LGM 29.XX performs self-tests in the following instances:
when the burner has been in continuous operation for more than 24 hours, before each time the burner is switched on, after each time the burner is switched off.
Behavior in the event of malfunctions If faults are detected, either no start-up takes place or automatic lockout is triggered. In case of all safety relevant malfunctions, the gas supply is cut off. Automatic lockout takes place
when flame establishment fails before the end of the flame recognition time, in the event of an uninterrupted delay of the flame signal for more than 3 seconds, in the event of an incorrect differential air pressure sensor signal longer than 70 seconds, in the event of internal faults.
In the event of a line voltage drop, the burner control unit either operates without a fault indication function or goes into reset position (gas valve closed). When the line voltage reaches its normal level again, burner control is ready for another start-up.
41
5285 961 - 02
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit
Functional description Space heating mode
The control unit calculates a boiler water setpoint temperature based on the outdoor or room temperature (where a room temperature dependent remote control is connected) and on the slope/shift of the heating curve. The computed boiler water setpoint temperature is transmitted to the burner control unit. From the boiler water setpoint and the actual temperature the burner control calculates the degree of modulation required, and regulates the burner accordingly. The maximum operating boiler water temperature is limited in the burner control unit:
to 167ºF / 75ºC by the electronic temperature control. The maximum adjustable high limit of the boiler is 180ºF / 82ºC. The fixed high limits of the safety chain interlock the burner control unit at 210ºF/99ºC boiler water temperature.
Domestic hot water supply with Combi boiler
When the water flow switch detects that hot water is being drawn (> 0.8 USG/3 L), the burner and circulating pump switch on, and the 3-way solenoid valve switches to domestic hot water production. The burner modulates based on the required domestic hot water outlet temperature and is limited by the electronic limit thermostat on the boiler side. When the comfort function is activated, the plate heat exchanger is kept at a standby temperature of "108 ºF/42 ºC on" and "115ºF / 46ºC off".
Domestic hot water supply with gas-fired space heating boiler
Domestic hot water heating is activated when the tank temperature is 4.5ºF/2.5ºC below the tank temperature setpoint value. The burner and the tank DHW pump are switched on. In the factory default setting, the desired boiler water temperature is set at 36ºF/20ºC above the tank temperature setpoint value. When the actual tank temperature rises 4.5ºF/2.5ºC above the tank temperature setpoint value, the burner is switched off and the time delay function of the tank DHW pump is activated.
Additional heating function (anti-legionnaire function) for domestic hot water production
The additional heating function is activated when an activation period of10 minutes is selected (e.g. 22.10 to 22.20 hrs). This period must lie outside the switching times for normal domestic hot water heating so that the signal is recognized by the control unit. The temperature setpoint value for additional heating is set in coding address "0A7".
Comfortrol Menu driven programming unit
5285 961 - 02
42
Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Standard programming unit
Legend A Gauge B Display C Time setting D Weekday setting E Scanning temperatures F Heating program selector switch
9 Standby mode
w Only DHW
rw Heating and DHW
s Constant standard room temperature
m Constantly reduced room temperature
T Test position G Burner fault display H Burner fault reset K Emissions test switch L Burner operation display M System ON/OFF switch N s Rotary selector
"Standard room temperature" O m Rotary selector
"Reduced room temperature" P Display
"Reduced room temperature" R Display "DHW heating" S Key "Base settings" T w Rotary selector
"DHW temperature" U G Rotary selector V N Rotary selector
"Level of the heating curve" W n Rotary selector
"Slope of the heating curve" X Start-up and shutdown timing keys Y Comfort function switch
(only for gas-fired combination boilers)
43
5285 961 - 02
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Heating system types
The control unit is adjusted to the system equipment. In the factory default setting, the heating system type is coded "000:000".
The coding is set automatically when a tank temperature sensor is connected (for operation with a DHW tank).
The control unit must be re-coded manually if a heating circuit with mixing valve is connected: For this purpose the corresponding heating system type is coded in the coding address "000". For other settings please note the numbers of system types. See page 45 for information of how to access the required coding level. Note: If only heating circuit B with mixing valve is
connected (i.e. there is no direct-connected heating circuit), the coding addresses "044, 045 and 046" must each be set to the value "001".
Refer to the Vitodens 200 Installation Instructions for piping layout details.
System type "000:000" Heating system with one heating circuit without mixing valve, without DHW heating.
or Heating system with low-loss header and heating circuits connected downstream with separate heating circuit control unit (Dekamatik-HK), without DHW heating.
System type "000:001" Heating system with one heating circuit without mixing valve, with DHW heating
or Heating system with low-loss header and heating circuits connected downstream with separate heating circuit control unit (Dekamatik-HK), with DHW heating.
System type "000:002" Heating system with one heating circuit with mixing valve, without DHW heating (with or without low-loss header)
or
Heating system with one heating circuit with mixing valve, and one heating circuit without mixing valve, without DHW heating (with or without low-loss header).
System type "000:003" Heating system with one heating circuit with mixing valve, with DHW heating (with or without lowloss header)
or
Heating system with one heating circuit with mixing valve, and one heating circuit without mixing valve, with DHW heating (with or without low-loss header).
*1 Circulating pump and check valve are external to the boiler and not internal as illustrated.
44
5285 961 - 02
Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Coding in the as delivered condition Address: value
Boiler 03:00
Function mode No DHW heating
Calling Up Coding Level 1
1. Calling up the coding level Simultaneously press the red key "w" and the blue key "M". Hold the keys down until after approx. 5 seconds "01:00" is displayed.
2. Coding address selection Press key "u" and turn rotary selector "G" clockwise, until the required coding address is displayed.
3. Changing the coding address Press key "1-7" and turn the rotary selector ",_." until the figure of the selected value appears.
4. Terminating coding; Press the red key "r".
Summary coding level 1
IMPORTANT
Coding addresses that are not described here must not be changed.
Code change Address: value
Possible change
03:01 03:02 *1
DHW cylinder temperature control. Cylinder temperature control (optimized)
03:14 03:15
Screed drying acc. to two optional temperature- time profiles. Observe DIN 4725-2.
Screed-drying acc. to temperature profile1) (DIN 4725)*2 Screed drying acc. to temperature profile 2 (ZV Parquet and underfloor technology)*2
5285 961 - 02
*1 Automatic adjustment, if a DHW cylinder temperature sensor is connected, can be manually changed to "01". *2 After this function is completed, the system automatically changes over to the operatng mode "Heatng and DHW"
45
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Summary coding level 1 (continued)
Coding in the as delivered condition Address: value Boiler (continued) 06:10
30:00
35:00
40:01 Heating circuits 04:00 *1
Function mode
Code change Address: value
Maximum temperature limit set to 85°C
06:00 to 06:15
External heating program changeover
30:01
External demand or external 35:01 heating program change blocked
Boiler water temp. display 40:00
One heating circuit without mixer or heating system with low loss header, without DHW heating
04:01 *1 04:02
04:03 *1
05:08 *1 07:01 *2 08:09 *2 22:00
Maximum temperature limit 05:00
set to 75°C
to
05:15
Differential temperature set 07:00
to 8 K
to
07:15
Heating circuit without mixer: 08:00
Heating curve slope "n" to
set to "1.4"
08:15
Heating circuit pump "ON" for heating system designs "04:02" and "04:03" (connection to plug "20 A")
22:01
Possible change
Max temperature limit variable between 35 and 110°C
External request
External demand or external heating program change enabled
Time display
One heating circuit without mixer or heating system with low loss header, plus DHW heating One heating circuit without mixer, one heating circuit with mixer, without DHW heating One heating circuit without mixer, one heating circuit with mixer and with DHW heating Max temperature limit variable between 35 and 110°C
Differential temperature variable between 6 and 36 K
Heating circuit without mixer: Slope "!Z" variable between "0.2" and "2.6" Heating circuit pump "OFF" for heating system designs "04:02" and "04:03"
*1 For systems without mixer, the address without mixer and with recognition of the DHW heating will be set automatically, and therefore must be manually reset.
*2 Only for heating system designs "04:02" and "04:03".
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46
Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Summary coding level 1 (continued)
Coding in the as delivered condition Address: value DHW cylinder 10:01
13:00
14:00
15:01 21:00
Function mode
Code change Address: value
The circulation pump starts 10:00 immediately.
Circulation pump with run 13:01 on up to max. 10 min
Set boiler water temp. for DHW cylinder loading acc. to set DHW cylinder temp. +20 K
14:01
With DHW priority control 15:00
Optional connection DHW 21:01 circulation pump
23:00 Heating circuit pump 11:01
12:01
16:01 17:00 Remote control 20:00 32:01 33:00
Setting range for DHW temperature 32 to 60°C
23:01
Heating circuit pump speed for reduced mode acc. to coding address "044:___
"of coding level 2
With variable speed heating circuit pump (automatic recognition)
With heating circuit pump logic function
Heating circuit without mixer present
11:00
12:00 16:00 17:01
Wthout WS or RS remote control unit
Weather-compensated mode in heating and reduced mode
20:01
32:00 *2 33:00 *2 32:00 *2 33:01 *2
*1 The address is automatically set and must be manually reset. *2 Do not adjust in the RS remote control connection.
Possible change
Circulation pump will be switched on subject to boiler temperature Circulation pump without run on
Set boiler water temperature during DHW cylinder loading equals 78°C
Without DHW priority control Output signal DHW heating enabled (not when operating with a boiler circuit pump) Setting range for DHW temperature 52 to 80°C
Heating circuit pump speed for reduced mode acc. to coding address "046:___ "of coding level 2
Stepped heating circuit pump (e.g. transfer mode for service)
With heating circuit pump logic function Heating circuit without mixer present
Wth WS or RS remote control unit*1
With room temperature hook-up in heating and reduced mode Weather-compensated mode in heating mode With room temperature hook-up in reduced mode
5285 961 - 02
47
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Summary coding level 1 (continued)
Coding in the as delivered Function mode condition Address: value
Changeover between summer and winter
47:01
Automatic summer / winter changeover
50:03
Summer starts: March
51:05
Summer starts: last day of the week
52:07 53:10
Summer starts: last day of the week (Sunday)
Winter starts: October
54:05
Winter starts: last day of the week
55:07
Winter starts: last day of the week (Sunday)
Code change Address: value
47:00
50:01 to 50:12 51:01 to 51:05 52:01 to 52:07 53:01 to 53:12 54:01 to 54:05 55:01 to 55:07
Possible change
Manual summer / winter changeover January to December
Week 1 to Week 5 of the selected month Monday to Sunday
January to December
Week 1 to Week 5 of the selected month Monday to Sunday
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Calling Up Coding Level 2
Note: For systems with wall mounting fixtures, the programming unit must be plugged into the control unit, if coding is to be carried out at coding level 2.
1. Calling up the coding level 1 Simultaneously press the red key "w" and the blue key "M". Hold the keys down until after approx. 5 seconds "01:00" is displayed.
2. Calling up the coding level 2 Simultaneously press the red key "p" and the blue key "r". Hold both keys down until after approx. 5 seconds, the display changes (e. g. to "o:OOO").
3. Selecting the coding address Press key "u" and turn rotary selector "G" clockwise, until the required coding address is displayed.
4. Changing the coding address Press key "1-7" and turn the rotary selector "G" until the figure of the selected value appears.
5. Terminating coding Press the red key "r".
Coding in the as delivered condition Address: value
Boiler 038:040
Function mode
Minimum flow temp. in heating mode
042:075
Maximum boiler water temp. in heating mode
102:075
Set boiler water temperature for external demand 75°C
108:000
Signal external blocking enabled: see the following table
Code change Address: value
038:020 to 038:127 042:020 to 042:127 102:000 to 102:127
108:001 to 108:007
Possible change
--
Max. possible boiler temperature 82°C
Setting range of the set boiler water temp. 0 to 127°C (max. possible boiler water temp. 82°C) Signal external blocking enabled: see the following table
5285 961 - 02
49
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Summary coding level 2 (continued) Modification types - coding address 108 "External blocking"
Coding
108:000 108:001 108:002 108:003 108:004 108:005 108:006 108:007
Heating circuit pump
× OFF × × OFF OFF OFF OFF
Heating circuit with mixing valve (extension kit)
Heating circuit pump Mixing valve
×
×
OFF
CLOSED
×
×
OFF
CLOSED
×
×
×
×
×
×
OFF
CLOSED
× = in normal control mode
Tank (Circulating pump for tank heating)
× OFF OFF × × OFF × ×
Burner
Blocked Blocked Blocked Blocked Blocked Blocked Blocked Blocked
Coding in the as delivered condition Address: value
Boiler (continued) 125:000
Function mode
Signal external demand activated: see the following table
Code change Address: value
125:001 to 125:011
Modification types coding address 125 "External demand"
Coding
125:000 125:001 125:002 125:003 125:004 125:005 125:006 125:007 125:008 125:009 125:010 125:011
Heating circuit pump
ON OFF × OFF ON ×
Heating circuit with mixing valve (extension kit)
Heating circuit pump Mixing valve
OFF
CLOSED
OFF
CLOSED
OFF
CLOSED
×
×
×
×
×
×
OFF
OFF
CLOSED
ON
OFF
CLOSED
×
OFF
CLOSED
OFF
×
×
ON
×
×
×
×
×
× = in normal control mode
Possible change
Signal external demand activated: see the following table
Tank (Circulating pump for tank heating)
OFF OFF OFF OFF OFF OFF
×
×
×
×
×
×
Burner
Will be maintained at the set value acc. to coding address "102"
--------
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50
Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Coding in the as delivered condition Address: value
Heating circuit pump 044:020
Function mode
Minimum heating circuit pump speed
Code change Address: value
044:001 to 044:100 *1
045:065 046:045 DHW cylinder 100:020 *2
107:060
Highest heating circuit pump speed
045:001 to 045:100 *1
Heating circuit pump speed 046:001
in reduced mode
to
046:100 *1
Differential temperature between the set boiler water temperature and the set DHW cylinder temperature during DHW heating
100:010 to 100:050
Temperature supplementary 107:061
function DHW heating
to
(DHW quickly to 60°C)
107:090
Possible change
Lowest value for the lower heating circuit pump speed (do not set below: "020") Highest value for lower heating circuit pump speed Lowest value for upper heating circuit pump speed Highest value for upper heating circuit pump speed Lowest heating circuit pump speed in reduced mode Highest heating circuit pump speed in reduced mode
Differential temperature setting range 10 to 50°C
Setting range between 61 and 90°C (max. possible boiler water temperature 82°C)
*1 Each step represents approx. 20 rpm *2 0nly effective with coding 14 00.
Note: For all non-listed coding addresses "255" will be displayed.
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51
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Heating curve
The heating curves represent the relationship between the outdoor temperature and the boiler water or supply temperature. Put simply: The lower the outdoor temperature, the higher the boiler water or supply temperature. In turn, the room temperature is dependent on the boiler water or supply temperature. If a different room temperature is set, the curves are shifted parallel to the desired room temperature axis.
Factory settings: slope "n" = 1.4 shift "N"= 0
1. To change the slope Open cover on programming unit and go through menu as follows:
Menu option HEATING CIRCUIT A
or
HEATING CIRCUIT B HEATING CURVE CHANGE
Button "A"
"B" "B" "A"
2. To change the shift Open cover on programming unit and go through the menu as follows:
Menu option
HEATING CIRCUIT A
or
HEATING CIRCUIT B HEATING CURVE CHANGE 2 ×
Button "A"
"B" "B" "A"
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Adjusting heating curves
Room temperature set value
Designs "04:00" and "04:01": Heating circuit without mixer
Designs "04:02" and "04:03": Heating circuit with mixer
Control unit setting:
Designs "04:02" and "04:03": Heating circuit without mixer
Control unit setting:
Heating curve slope
Designs "04:00" and "04:01": Heating circuit without mixer
Designs "04:02" and "04:03": Heating circuit with mixer
Designs "04:02" and "04:03": Heating circuit without mixer Setting of coding address "08" Slope setting range "08:00" = 0.2 to "08:15" = 2.6 (Change per step: 0.2) As delivered condition: "08:09" = 1.4.
Setting of coding address "08" Slope setting range "08:00" = 0.2 to "08:15" = 2.6 (Change per step: 0.2) As delivered condition: "08:09" = 1.4.
53
5285 961 - 02
Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Adjusting heating curves (cont.)
Heating curve level
Designs "04:00" and "04:01": Heating circuit without mixer Designs "04:02" and "04:03": Heating circuit with mixer
Control unit setting:
Designs "04 02" and "04 03"
Differential temperature
Setting of coding address "07" Differential temperature setting range from "07:00" = 6 K to "07:15" = 36 K (Change per step: 2 K) As delivered condition: "07:01" = 8 K.
Note: If Vitotronic 050 is connected, the set differential temperatures add up (as delivered condition respectively 8 K). Therefore set the differential temperature on Vitotronic 050 appropriately lower.
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Maximum temperature limit
Heating circuit without mixer Setting of coding address "06" Setting range 0 for max. temp. from "06:01" == 40ºC to "06:15" == 110ºC (Change per step: 5 K) As delivered 0condition: "06:10" == 85ºC.
Heating circuit with mixer Setting of coding address "05" Setting range 0 for max. temp. from "05:00" == 35ºC to "05:15" == 110ºC (Change per step: 5 K) As delivered 0 condition: "05:08" == 75ºC.
Accessing coding addresses The coding of the programming unit is performed by using the "A", "B", "C" and "D" buttons and the "G" selector knob.
Open cover:
Menu option SYSTEM INSTALLER SETUP CODE PLEASE: CODING 1
or
CODING 2
Button "D" "C" "B-C-C-B" "B"
"C"
The desired coding address is selected by pressing button "A" (CONTINUE) or "B" (BACK). The respective coding address is changed with the "G" selector knob (CHANGE). The change is confirmed with button "D" (change is stored).
Note: All the settings are performed in the "Installer Setup" menu which contains "Coding 1" (main coding addresses in plain language) and "Coding 2" (all coding addresses). Changes made and confirmed in Coding Level 1 are automatically adopted in Coding Level 2 and vice versa.
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Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Overview of coding addresses Coding addresses not discussed in this section must not be changed. See page 50 for information of how to access coding addresses.
Coding (factory default setting) Address: Value
000:001*1
Function mode
One heating circuit without mixing valve, system with domestic hot water heating
Coding change Address: Value
000:000 000:002*2 000:003*1, 2
001:000 003:001
004:000 005:001
006:001
007:000
Do not change
DHW tank With priority switching over tank heating circuit pump(s)
Do not change
Heating circuit pump With heating circuit pump logic function
Heating circuit pump Heating circuit pump speed in reduced range as per coding address "044:..."
DHW tank Setting range of domestic hot water temperature 50 to 140ºF / 10 to 60ºC
-003:000
-005:000
006:000
007:001
Possible changes
One heating circuit without mixing valve, system without domestic hot water heating One heating circuit with mixing valve, system without domestic hot water heating One heating circuit with mixing valve, system with domestic hot water heating
-Without priority switching over heating circuit pump(s)
-Without heating circuit pump logic function
Heating circuit pump speed in reduced range as per coding address "046:..."
Setting range of domestic hot water temperature 50 to 158ºF / 10 to 70ºC
IMPORTANT
Note max. tank water temperature.
008:000 009:000
010:000 011:000
012:000 013:000
014:000*3
015:001
Do not change
Programming unit Display of boiler water temperature
Do not change
External call for heat or external switching of heating program blocked
Do not change
Heating circuit pump without variable speed operation (e.g. as temporary measure for servicing)
Party button "g" effective for heating circuit B
-009:001
-011:001
-013:001
014:001*3
Do not change
--
IMPORTANT
Do not adjust domestic hot water temperature more than 158ºF/70ºC.
-Display of outdoor temperature
-External call for heat or external switching of heating program active at X4.1 - X4.2
-Heating circuit pump With variable speed heating circuit pump (automatic recognition)
Party button "g" effective for heating circuit A and heating circuit B
--
*1 Coding for systems with domestic hot water heating is automatically recognized. *2 These codings also apply on systems with one heating circuit without mixing valve and one heating circuit with mixing valve. *3 Only on heating system types "000:002" and "000:003" (heating systems with one heating circuit with mixing valve).
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Overview of coding addresses (continued)
Coding (factory default setting) Address: Value 016:000 017:001 018:000
019:000
Function mode
Do not change
Do not change
Circulating pump with time delay function
Programming unit or remote control Weather-responsive operation (WS function) for all connected heating circuits
020:000
027:000 028:000
029:001 033:000 034:000 036:000 038:020
Heating circuits Without WS or RS remote control unit
External switching of heating program
Boiler During DHW production, the boiler water temp. is max. 36ºF / 20ºC higher than the desired tank water temp.
Do not change
Do not change
Do not change
Do not change
Minimum supply temperature in heating mode
Coding change Possible changes Address: Value
--
--
--
--
018:001 019:001*1 019:002*1
Circulating pump without time delay function
On systems with one heating circuit without mixing valve or one heating circuit with mixing valve: Operation with room temperature dependent control (RS function) On systems with one heating circuit without mixing valve and one heating circuit with mixing valve: Weather-responsive operation (WS function) for heating circuit with mixing valve and operation with room temperature dependent control (RS function) for heating circuit with mixing valve On systems with one heating circuit without mixing valve or one heating circuit with mixing valve: Weather-responsive operation (WS function) in normal heating mode and operation with room temperature dependent control (RS function) in reduced operation On systems with one heating circuit without mixing valve and one heating circuit with mixing valve: Weather-responsive operation (WS function) for heating circuit without mixing valve and on weather responsive basis in normal heating mode and operation with room temperature dependent control in reduced operation (WS/RS function) for heating circuit with mixing valve
020:001
With WS or RS remote control unit *2
027:001 028:001
External call for heat
During domestic hot water production, the boiler water temperature is limited to 172ºF / 78ºC by the limit thermostat
----020 to 127
----Min. possible supply temperature 68 to 261ºF / 20 to 127ºC
*1 Change only feasible if programming unit is mounted on a wall-mount base. *2 Address set automatically, must be reset manually.
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Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Overview of coding addresses (continued)
Coding (factory default setting) Address: Value 042:070 044:030
045:065
046:045
049:___ 050:___ 055:040 085:032 086:032 088:007 089:008 099:000 0A0:020*2
0A1:000 0A2:075
0A3:___
Function mode
Boiler water temperature in heating mode Heating circuit pump Minimum rotational speed of heating circuit pump; approx. 1100 rpm
Coding change Address: Value 000 to 82
044:001 to 044:100*1
Heating circuit pump Maximum rotational speed of heating circuit pump; approx. 1750 rpm
045:001 to 045:100*1
Heating circuit pump Rotational speed of heating circuit pump in reduced operation; approx. 1200 rpm
046:001 to 046:100*1
Hours run ("hundreds") at 3rd place from left
049:000
Hours run ("units") at 3rd place 050:000 and "tens" at 2nd place from left
Do not change
--
Do not change
--
Do not change
--
Do not change
--
Do not change
--
Possibility for connecting a DHW 099:001 recirculating pump (on timer schedule)
Differential temperature between desired boiler water temperature and desired tank temperature with domestic hot water heating
0A0:10 to 0A0:50
Do not change
--
Boiler Desired boiler temperature 0A2:032
with external request
to
167ºF / 75ºC
0A2:127
Do not change
--
Possible changes
Max. adjustable temperature limit setting 180ºF / 82ºC Lowest value for maximum rotational speed of heating circuit pump; approx. 700 rpm Highest value for maximum rotational speed of heating circuit pump; approx. 2700 rpm Lowest value for maximum rotational speed of heating circuit pump; approx. 700 rpm Highest value for maximum rotational speed of heating circuit pump; approx. 2700 rpm Lowest value for rotational speed of heating circuit pump in reduced operation; approx. 700 rpm Highest value for rotational speed of heating circuit pump in reduced operation; approx. 2700 rpm Reset hours run
Reset hours run
-----Output signal for domestic hot water production active (ON), whenever there is a call for DHW only --
-Setting range of desired boiler water temperature 90 to 261ºF / 32 to 127ºC (max possible boiler water temperature 180ºF / 82ºC)
--
*1 One increment corresponds to approx. 20 rpm. *2 Only effective with coding 028:000.
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Overview of coding addresses (continued)
Coding (factory default setting) Address: Value 0A4:255 0A5:255 0A6:255 0A7:060
0A8:000
Function mode
Do not change
Do not change
Do not change
DHW tank Setpoint value for "Additional function for domestic hot water heating" ("Anti-Legionnaire-Function" domestic hot water heated briefly to 140ºF / 60ºC)
Boiler See table below for effect of external disable signal (also see page 65)
Coding change Address: Value
---A07:061 to A07:070
0A8:001 to 0A8:007
Possible changes
---Setting range between 142 to 158ºF / 61 and 70ºC.
IMPORTANT
Do not adjust domestic hot water temperature more than 158ºF / 70ºC.
See table below for effect of external disable signal
Possible coding changes for coding address 0A8 "external disable"
Coding
0A8:000 0A8:001 0A8:002 0A8:003 0A8:004 0A8:005 0A8:006 0A8:007
Heating circuit pump
× OFF × × OFF OFF OFF OFF
Heating circuit with mixing valve (extension kit)
Heating circuit pump Mixing valve
×
×
OFF
CLOSED
×
×
OFF
CLOSED
×
×
×
×
×
×
OFF
CLOSED
× = in normal control mode
Tank (Circulating pump for tank heating )
× OFF OFF × × OFF × ×
Burner
Blocked Blocked Blocked Blocked Blocked Blocked Blocked Blocked
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Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Overview of coding addresses (continued)
Coding (factory default setting) Address: Value 0A9:098
0B2:___ 0B3:___ 0B4:___ 0B8:000
0C1:011 0C2:008 0C5:000
Function mode
Circulating pump Max. rotational speed of circulating pump for DHW production
Fault memory (see page 24) Fault memory (see page 24) Do not change Space heating only - no DHW
Freeze-up protection threshold +34 / +37ºF or +1 / +3ºC Do not change Boiler See table below for effect of external heat demand signal (also see page 65)
Coding change Address: Value 0A9:001 to 0A9:100*1
---0B8:001 0B8:002
0B8:005 0B8:006
0C1:000 0C1:015
-0C5:001 to 0C5:011
Possible changes
Lowest value for rotational speed of circulating pump for DHW production Highest value for rotational speed of circulating pump for DHW production
--
--
--
With DHW heating Optimum DHW heating (with anti legionnaire function) (see page 42). Combi boiler only Not assigned. Must be changed to one of the other coding addresses.
+50 / +18ºF or +10 / 8ºC +41 / +45ºF or +5 / +7ºC
--
See table below for effect of external heat demand signal
Possible coding changes for coding address 0C5 "external heat demand"
Coding
0C5:000 0C5:001 0C5:002 0C5:003
Heating circuit pump
ON OFF × OFF
Heating circuit with mixing valve (extension kit)
Heating circuit pump Mixing valve
OFF
CLOSED
OFF
CLOSED
OFF
CLOSED
×
×
Circulating pump Boiler water for tank heating temperature
OFF
Maintained at
OFF
desired value
according to
OFF
coding address
OFF
"0A2"
0C5:004
ON
×
×
OFF
0C5:005
×
×
×
OFF
0C5:006
OFF
OFF
CLOSED
×
0C5:007
ON
OFF
CLOSED
×
0C5:008
×
OFF
CLOSED
×
0C5:009
OFF
×
×
×
0C5:010
ON
×
×
×
0C5:011
×
×
×
×
× = in normal control mode *1 One increment corresponds to approx. 20 rpm. *2 This is set automatically when a tank temperature sensor is connected; can be reset to "001" manually if required. *3 Once this function has ended, the program changes automatically to the "Space heating and DHW heating" mode.
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Overview of coding addresses (continued)
Coding (factory default setting) Address: Value 0C6:000 0C7:003
0C8:001
0C9:003 0D0:005 0D1:007 0D2:010 0D3:005 0D4:007 0D5:000 0D6:000 0D7:000
Function mode
Do not change Resetting to summer/winter time Automatic
External switching of heating program Contact open: Space heating ON/domestic hot water heating ON (according to time program) Contact closed: Central heating OFF/domestic hot water heating OFF. Start of summer time:March
Start of summer time: Last week of month
Start of summer time: Last day of week (Sunday)
Start of winter time: October
Start of winter time: Last week of month
Start of winter time: Last day of week (Sunday)
Programming unit Normal display format with cover closed Programming unit Temperatures displayed in "ºC" (º Celsius) Do not change
Coding change Address: Value
-0C7:000 0C7:001 0C7:002
0C8:000
0C9:001 to 0C9:012 0D0:001 to 0D0:005 0D1:001 to 0D1:007 0D2:001 to 0D2:012 0D3:001 to 0D3:005 0D4:001 to 0D4:007 0D5:001
0D6:001
--
Possible changes
--
Manual resetting to s/w / date change blocked Automatic resetting to s/w Manual resetting to s/w / date change released
Contact open: Central heating ON/domestic hot water heating ON (according to time program) Contact closed: Continuous space heating ON/domestic hot water heating ON (independent of preset time program)
January to December
Week 1 to Week 5 of selected month
Monday to Sunday
January to December
Week 1 to Week 5 of selected month
Monday to Sunday
Large display format for time and outdoor temperature with cover closed
Temperatures displayed in "ºF" (º Fahrenheit)
--
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Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Accessing temperature settings (with comfortrol menu driven programming unit)
The following desired and actual temperature values can be accessed and shown on the display of the programming unit:
Outdoor temperature Boiler water temperature Supply temperature of the extension kit for the heating circuit with mixing valve Room temperature (if programming unit is mounted on a wall-mount base and used as a remote control).
Open the cover:
Menu option
Button
HEATING
CIRCUIT A or
"A"
HEATING CIRCUIT B or "B"
SYSTEM
"D"
OPERATING STATUS "C" or "B"
CONTINUE
"A"
Domestic hot water temperature
Open cover:
Menu option DHW DHW TANK OPERATING STATUS
Button "C" "A" "C"
Depending on the coding, the boiler water temperature or the outdoor temperature is shown in the first menu on the display.
Brief scan (with standard programming unit) Simultaneously press keys "u" and "1-7".
Meaning of the display: A set DHW plan in coding address 03*1 B set heating plan in coding address 04*1 C KM BUS users:
02 with burner control unit (12) plus Vitocom 100
03 with burner control unit and variable speed heating circuit pump
(13) plus Vitocom 100
06 with burner control unit and extension kit for one heating circuit with mixer*2
(16) plus Vitocom 100
07 with burner control unit extension kit for one heating circuit with mixer*2 and variable speed heating circuit pump
(17) plus Vitocom 100
*1 For systerns with wall rnounting fixture plug the prograrnrning unit into the control unit
*2 The systern only recognizes the extension kit if it is connected via the KM sus
Not if connected via the 2-wire Viessrnann BUS
62
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Vitodens 200 WB2 Service
Additional Information
Control Unit for Weather-Responsive Operation with programming unit (continued)
Scanning temperatures
The programming unit enables the temperatures of connected sensors to be scanned as set and actual values.
Scanning actual temperatures
1. Select the ID of the respective temperature from the table.
ID
Meaning of the display Actual temperature in
ºC (display example)
1*1 Outside temperature 1: 8 ºC
2
Low loss header
temperature
2: 45 ºC
3
Boiler water temperature 3: 63 ºC
4*2 Flow temperature
4: 44 ºC
5*3 DHW cylinder temperature
5: 50 ºC
7*4 Room temperature
7: 20 ºC
*1 The display value takes weather conditions into consideration, such as wind, solar radiation and the wall temperature of the building.
*2 Only in connection with the extension kit or heating circuits with mixer.
*3 Only if the sensor is connected or activated.
*4 Only if the programming unit is set into the wall mounting fixture as room temperature dependent remote control unit.
2. Press key "?" and turn the rotary selector "G" anticlockwise or clockwise, until the ID A for the
corresponding temperature is shown on the display. At the same time, the current temperature B will be
displayed.
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Additional Information
Vitodens 200 WB2 Service
Control Unit for Weather-Responsive Operation with programming unit (continued)
Scanning temperatures (cont.)
Scanning set temperatures
Note: For systems with wall-mounting fixture, the programming unit must be plugged into the control unit to be able to scan set temperatures.
1. Set the heating program selector switch to "T". The LEDs "Reduced room temperature" and "DHW heating" flash in the display.
2. Select the ID of the respective temperature from the table.
ID
Meaning of the display Actual temperature in
ºC (display example)
1*1 Outside temperature 1: 8 ºC
2
Low loss header
temperature
2: 45 ºC
3
Boiler water temperature 3: 63 ºC
4*2 Flow temperature
4: 44 ºC
5*3 DHW cylinder temperature
5: 50 ºC
7*4 Room temperature
7: 20 ºC
*1 Only in connect on with the extension kit for heating circuits with mixer
*2 Only if the sensor is connected or activated.
3. Press key "?" and turn the rotary selector "G" anticlockwise or clockwise, until the ID A for the
corresponding temperature is shown on the display. At the same time, the current temperature B will be
displayed.
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Vitodens 200 WB2 Service
Jumper Assignment and Codings
Additional Information
Assignment of plug-in jumper on circuit board VR20 Plug-in jumper "X6" Factory default setting without "External burner disable" function. With "External burner disable" function.
Plug-in jumpers "X2"-"X4" Factory default setting without Viessmann 2-wire BUS expansion module: Two plug-in jumpers connected as shown.
With Viessmann 2-wire BUS expansion module: Both plug-in jumpers removed.
External switching of the heating program (telephone contact) With programming unit Change coding address "011:000" to "011:001".
External heat demand (field supplied) With programming unit Change coding address "011:000" to "011:001" and "027:000" to "027:001". Boiler start-up takes place in accordance with the settings of coding address "0C5". Boiler water temperature is maintained at the value selected in coding address "0A2".
External disable (field supplied) 1. Remove circuit board VR20 A. 2. Reverse plug-in jumper "X6" B. 3. Insert circuit board A again.
Boiler shutdown takes place in accordance with the settings selected in coding address "0A8".
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Additional Information
Replacement of Circuit Board VR20
Vitodens 200 WB2 Service
Before replacing circuit board VR20, record actual system addresses (in particular coding addresses 000, 0B8, 042, 045, 015, 017, 0A2) and their corresponding values, heating curves and DHW settings.
Removing circuit board VR20
1. Loosen the two screws located underneath the control and carefully fold down the control.
2. Unscrew and remove cover.
3. Slide out circuit board VR20 using supplied handle.
Installing the replacement circuit board
1. Slide circuit board VR20 back into the control. Ensure that circuit board is fully plugged in and makes positive contact.
2. Reinstall front enclosure panel and cosmetic piping cover.
3. Verify that all coding addresses and their values are programmed to recorded actual/required values. See table below.
4. Turn on power supply to boiler and start up boiler.
Coding information Note: This table does not reflect all necessary coding
changes required for proper operation of the boiler. See subsection "Overview of coding addresses" in this manual for other coding changes required.
Coding address Possible coding values
000:
001 (with DHW; factory default setting)
015: 017: 0B8:
000 (factory default setting)
001 (factory default setting)
000 (no DHW storage tank) 001 (with DHW storage tank) 002 (with DHW storage tank optimized) 006 (not assigned)
Required action Set according to system layout. See page 44 for details. Do not change! Do not change! Set to (one of) the value(s) indicated.
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Vitodens 200 WB2 Service
Replacement of Burner Control Unit LGM 29
Additional Information
Removing the circuit board 1. Unlock hooks 1 located on both sides of the control
unit and remove the control housing 2 of the control unit.
2. Remove pressure gauge 3.
3. Loosen the two screws located underneath the control unit 4 and carefully fold down the control unit.
4. Remove covers 5, 6, 7 and 8.
5. Remove all plug-in connectors and the grounding wire.
6. Slide off circuit board VR20 8 using the supplied handle.
7. Loosen screws holding installed circuit board LGM 29.22 qP in place and remove carefully.
Setting the dip switch (applicable only to replacement boards)
1. Set dip switch qQ setting of the new circuit board according to the table on the following page.
IMPORTANT
The boiler must be operated in accordance with its certification (see boiler rating plate). Thus ensure that the dip switch setting is set according to the table on the following page.
Note: that in the factory default setting all switches are set to "OFF".
2. Remove fuse holder from fuse F3 of the removed circuit board LGM 29.22 and install on fuse F3 on replacement circuit board LGM 29.55.
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Additional Information
Replacement of Burner Control Unit LGM 29 (continued)
Setting the dip switch Boiler model no. WB2 11-44
WB2 15-60
Vitodens 200 WB2 Service Dip switch setting
Installing the replacement circuit board 1. Install new circuit board LGM 29.55 qP.
IMPORTANT
Do not remove clear covers on the circuit board. These provide protection against static discharge.
2. Connect all plug-in connectors to circuit board LGM 29.55 qP, including #158 plug.
IMPORTANT
Do not interchange plug-in connectors "X6" and "X7". None of the other connectors are interchangeable. 3. Install covers and . 4. Plug in grounding wire. 5. Insert circuit board VR20 .
6. Install covers and . 7. Fold up control unit and secure, using screws.
8. Insert pressure gage (do not kink capillaries). 9. Mount control housing and lock into place with
hooks located on both sides of the control unit. 10. Reinstall front enclosure panel. 11. Start up boiler and check for proper functioning
of the circuit board and the heating system.
Vitodens 200 Start-up/Service Instructions
If "FAULT : FE" appears in the display of the control unit during the functionality check, check dip switch settings against table on previous page and adjust if required.
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Vitodens 200 WB2 Service
Wiring Diagram
Additional Information
5285 961 - 02
69
Additional Information
Parts Lists
Vitodens 200 WB2 Service
Model No. WB2 11-44 WB2 15-60
Serial No. 7188578 7188577
Ordering Replacement Parts: Please provide boiler Model and Serial Number from rating plate when ordering replacement parts. Order replacement components from your Viessmann distributor.
Parts
001 Profile gasket 016 Air vent without shut-off, R 3/8 in. 017 Matrix burner assembly (with Pos. 018, 026, 027,
056, 088, 094, 096, 100 and 120) 018 Matrix burner mesh (with Pos. 096 and 100) 020 Radial fan, RLS154 (without electrode) 026 Ignition electrode 027 Ionization electrode 028 Flex gas pipe, 90x1½x1½ cm 030 Conversion kit, NG 032 Conversion kit, LP 043 Connecting pipe extension (return)
044 Flow sensor 050 Condensate hose 055 Differential pressure sensor 056 Gas valve without orifice 057 Sealing grommet 058 Spring clip (set) 059 P-trap 086 Fixed high limit, 210°F / 99°C 087 Temperature sensor (with Pos. 049) 088 Ignition transformer 093 Heat exchanger assembly ASME 094 Insulation ring 096 Burner gasket (secondary) 100 Burner gasket 120 Burner gasket (primary)
Other Parts (not illustrated)
004 Operating Instructions and User's Information Manual 005 Start-up/Service Instructions 006 Parts List 007 Installation Instructions 049 Heat conductive paste
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Vitodens 200 WB2 Service
Parts Lists (continued)
Additional Information
Parts
008 Front panel (with Pos. 046, 060 and 061)
010 Wall-mount bracket 011 Fuse 6.3 amp (10 pack) 013 Programming unit 015 Ball valve, ½ in. with handle 019 Electronics box, RLS154 021 Burner control, LGM29.55 022 Circuit board, VR20 025 Hood (internal) for control unit 033 Harness for pump output 035 Circuit board, connection box 037 Vent pipe adaptor 039 Base panel 040 Cover panel 041 Gasket DN110 045 Seal d=150 mm 046 Nameplate (set) "Vitodens 200" 047 Seal d=100 mm 048 Pressure gauge (psi) 060 Cover (flip-down) 061 Accessory pack, front panel
hardware
062 Transformer 230V 063 Pressure gage insert 064 Connection module cover 065 Connection module 066 Switch (pair, Reset/Override) 070 Cover (blank) 071 Mounting bracket 072 Cable entry strip 073 Cable entry cover 074 Cover (poti) 075 Circuit board cover for VR20 076 Cable entry plug (pair) 079 Mounting plate 080 Control console (empty) 081 Switch (on/off)
(mechanism only-no switch) 082 Flat cable, 26-pole 084 Circuit board, adaptor 085 Circuit board, Optolink 089 Cap for vent pipe adaptor 200 Fastening bracket (10 pack) 205 Cap G 3/4 SW30
Other Parts (not illustrated)
023 Wiring harness, X 14 024 Wiring harness, X 11 034 Wiring harness, X 13 051 Touch-up paint stick, pure white 052 Touch-up spray paint, pure white 053 Pressure relief valve 054 Lubricating grease (6g) 068 Jumper plug, ionization 077 Counter plug (set) 078 Accessory pack (control unit) 090 Gasket (set) 092 Wiring harness, X 12 095 Accessory pack (burner parts) 097 Accessory pack,
enclosure hardware 10 pack 099 Connection assembly DEV 167 Wiring harness, ION/PE 201 Sensor #1 (outdoor) 202 Power/pump control module 203 Gasket assortment ½ in., ¾ in. 204 Maintenance kit 210 Flow check valve DN25 305 Drain valve kit, ¾ in. 306 Power conditioner 307 Accessory pack (strain reliefs) 400 Service tool set "Vitodens 200"
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Additional Information
Parts Lists (continued)
Installation fittings
Parts
110 Gasket, 32 x 44 x 2 mm 111 Adaptor (pair with gasket) 1½ in. - 1¼ in. 113 Tee, 1¼ in. x 1¼ in. x ¾ in. 114 Nipple, 1¼ NPTM x 2½ in. 115 Full port ball valve, 1¼" FBV (T) 116 Nipple, ¾ in. x 3½ in. 117 Brass tee, ¾ in. 118 Sediment faucet, ¾ in. 119 Nipple, ¾ x 2 in. 120 Pressure relief valve 122 Shut-Off Valve (pair with gasket)
Vitodens 200 WB2 Service
Parts (not illustrated) 130 Accessory pack (metal stud mounting kit) 131 Loctite sealant, 6 ml Tube 132 Keychain with air bleed key 133 Parts List *1 Included in DHW Production Kit.
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Vitodens 200 WB2 Service
Maintenance Record
Additional Information
5285 961 - 02
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Additional Information
Lighting and Operating Instructions
Vitodens 200 WB2 Service
FOR YOUR SAFETY READ BEFORE OPERATING
W A R N I N G: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.
B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. WHAT TO DO IF YOU SMELL GAS · Do not try to light any appliance. · Do not touch any electric switch; do not use any phone in your building. · Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. · If you cannot reach your gas supplier, call the fire department.
C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don't try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on this label.
2. Set thermostat or other operating control to lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. Manual gas shutoff
5. Close main gas shut-off valve.
6. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to the next step.
7. Open main gas shut-off valve.
8. Turn on all electric power to the appliance.
9. Set thermostat or other operating control to desired setting.
Closed Open
10. If the appliance will not operate, follow the instructions "To Turn Off Gas To Appliance" and call your service technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1. Set thermostat or other operating control to lowest setting. 2. Turn off all electric power to the appliance if service is to be performed. 3. Close main gas shut-off valve.
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Vitodens 200 WB2 Service 75
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Technical information subject to change without notice.
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Vitodens 200 WB2 Service
Acrobat Distiller 10.1.16 (Windows)