RHEEM RTEX-11 11kw 240v Tankless, Instant Electric Water Heater – Wholesale Water Heater
ProPress Copper Slip Couplings – Wholesale Water Heater
طقم تنظيف سخان الماء بدون خزان أوتي – Wholesale Water Heater
INSTALLATION AND SERVICE MANUAL
Commercial Electric Water Heaters
9kW 900kW Input Models
CHP-I&S-01
Installation and service must be performed by Qualified Service Personnel Only.
SPECIAL INSTRUCTIONS TO OWNER
WARRANTY Factory warranty (shipped with unit) does not apply to units improperly installed or improperly operated.
Experience has shown that improper installation or system design, rather than faulty equipment, is the cause of most operating problems.
WARNING:
Improper Installation, Adjustment, Alteration, Service or Maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the electric utility.
CHECKING EQUIPMENT
Excessive water hardness causing a lime/scale
build-up in the heater and/or on the immersion This manual supplies information for the
heating elements is not the fault of the equipment installation, operation and servicing of the
and is not covered under the manufacturer's appliance. It is strongly recommended that this
warranty. (See Water Treatment and Water manual be reviewed completely before
Chemistry)
proceeding with an installation. Upon receiving
equipment, check for signs of shipping damage.
Do not energize electrical system before heater Pay particular attention to parts accompanying is completely filled with water. Damage caused the water heater, which may show signs of being to the immersion heating elements by dry fire is hit or otherwise being mishandled. Verify total not covered under the manufacturer's warranty. number of pieces shown on packing slip with Follow start up procedure in the manual. those actually received. In case there is damage Water heater corrosion and component failure or a shortage, immediately notify carrier.
caused by air-borne chemical vapors is not covered under the manufacturer's warranty. Corrosion damage caused by current leakage due to improper grounding of electrical systems or electronic components to the storage tank and related piping is not covered by the manufacturer's warranty. Under no circumstance will the manufacturer be liable for consequential damages resulting from the installation or use of this equipment. Correct installation procedure and local codes must be adhered to.
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER. THE POSSIBLE DAMAGE TO A FLOODED APPLIANCE CAN BE EXTENSIVE AND PRESENT NUMEROUS SAFETY HAZARDS. ANY APPLIANCE THAT HAS BEEN UNDER WATER MUST BE REPLACED.
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
NOTE: Retain this manual for future reference.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
1
CONTENTS
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . .1 Safety Warnings . . . . . . . . . . . . . . . .1 Checking the Equipment . . . . . . . . . .1 Codes . . . . . . . . . . . . . . . . . . . . . . . .4
Installation Requirements Location . . . . . . . . . . . . . . . . . . . . . .4 Drain Pan Requirements . . . . . . . . . .5 Clearances . . . . . . . . . . . . . . . . . . . .6 Mounting . . . . . . . . . . . . . . . . . . . . .7 Water Connections . . . . . . . . . . . . . .7 Tank Construction . . . . . . . . . . . . . .8 Relief Valve . . . . . . . . . . . . . . . . . . .8 Thermal Expansion . . . . . . . . . . . . .8 Cathodic Protection . . . . . . . . . . . . .9
Electrical Service Electrical Connection . . . . . . . . . . .9 Wire Sizing . . . . . . . . . . . . . . . . . . .9 Fusing . . . . . . . . . . . . . . . . . . . . . .9 Electrical Connection . . . . . . . . . . . .9 Jacket Assembly . . . . . . . . . . . . . . .10 Standard and Optional Controls . . .10
Components and Controls Terminal Block . . . . . . . . . . . . . . . .11 Fuses and Fuse Blocks . . . . . . . . . .12 Contactors . . . . . . . . . . . . . . . . . . .12 Transformer . . . . . . . . . . . . . . . . . .12 Immersion Thermostat . . . . . . . . . .13 Temperature Regulation . . . . . . . . .13 Risk of Scald Warnings . . . . . . . . .14 Temperature Control Sequencer . . .14 Display . . . . . . . . . . . . . . . . . . . . . .16 Temperature Adjustment . . . . . . . . .17 Error Messages . . . . . . . . . . . . . . . .18 Temperature Limit Control . . . . . . .18 Immersion Heating Elements . . . . .19 Safety Door Lock . . . . . . . . . . . . . .19 Low Water Cut-Off . . . . . . . . . . . . .20 Low Water Pressure Switch . . . . . .20 High Water Pressure Switch . . . . . .20 Manual Limiting Switches . . . . . . .20 Time Clock . . . . . . . . . . . . . . . . . . .21 Pilot Lights . . . . . . . . . . . . . . . . . . .21 Alarm Bell . . . . . . . . . . . . . . . . . . .21
Start-Up Procedure Filling the Water Heater . . . . . . . . .22 Start-Up Checks . . . . . . . . . . . . . . .23 Shutdown Procedure . . . . . . . . . . . .24
Maintenance T&P Relief Valve . . . . . . . . . . . . . .24 Water Chemistry . . . . . . . . . . . . . . .25 Flushing the Tank . . . . . . . . . . . . . .25 Sediment Removal . . . . . . . . . . . . .25 Scale Removal - Elements . . . . . . .25
Trouble Shooting Not Enough Hot Water . . . . . . . . . .27 Water Is Too Hot . . . . . . . . . . . . . .27 Water Heater Sounds . . . . . . . . . . .27 Leakage . . . . . . . . . . . . . . . . . . . . .27
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FIG. 1 Front View Vertical Round Models
FIG. 2 Front View Vertical Square Models
FIG. 3 Front View Horizontal Models 3
OWNER WARNING
The information contained in this manual is intended for use by qualified professional installers, service technicians or the electric utility. Consult your local expert for proper installation or service procedures.
These shall be carefully followed in all cases. Authorities having jurisdiction shall be consulted before installations are made. In the absence of such requirements, the installation shall conform to the latest edition of the National Electrical Code, NFPA 70. When the appliance is installed in Canada, it must conform to the CAE C22.1,
IMPORTANT:
Canadian Electrical Code, Part 1 and/or local Consult and follow Electrical Codes.
local Electrical Codes, Building and Fire
Regulations and other Safety Codes that
APPROVALS
apply to this installation. Consult local
codes officials and electric utility company This complete appliance is design certified and
to authorize and inspect all field installed Listed by Underwriters Laboratories as a
electrical connections.
commercial storage electric water heater. This
water heater bears the UL certification for the
CAUTION: Be sure to turn off power United States as tested under the Standard for
when working on or near the electrical Electric Booster and Commercial Storage Tank
system of the water heater. Never touch Water Heaters, UL1453 and C-UL in Canada as
electrical components with wet hands or tested under the Standard for Construction and Test
when standing in water. When replacing of Electric Storage Tank Water Heaters,
fuses, always use the correct size for the CAN/CSA-C22.2 No. 110-M90. All water heater
circuit. Do not test electrical system before storage tanks conform to the latest edition of the
the water heater is completely filled with ASME Boiler and Pressure Vessel Code, Section IV.
water. Follow the start-up procedure.
INSTALLATION PROCEDURE
WARNING: To minimize the possibility
LOCATION OF UNIT
of serious personal injury, fire or damage to your appliance, never violate the following 1.
safety rules.
Locate the appliance so that if water connections should leak, water damage will not occur. When such locations
1. Always keep the area around your appliance free of combustible materials, gasoline, and other flammable liquids and vapors.
cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the unit. Under no circumstances is the manufacturer to be held responsible for water damage in
2. Never cover your appliance, lean anything against it, store trash or
connection with this unit, or any of its components.
debris near it, stand on it or in any way block the access to your 2.
appliance.
Insure that the appliance is located near an acceptable drain so that the vessel can be properly drained when performing
service or maintenance. The drain must
CODES
also provide adequate drainage in the
event of leakage the tank or related
The equipment shall be installed in accordance
piping. The drain must prevent water
with those installation regulations in force in the
damage to the adjacent area and lower
local area where the installation is to be made.
4
floors of the structure.
3. The appliance must be installed so that the electrical components are protected from water (dripping, spraying, etc.) during appliance operation and service
Drain Pan on Horizontal Models and Vertical Square Models 1250 Gallons and Larger
(replacing of fuses, elements, etc.)
The lower pan of the horizontal water heater
jacket or vertical square water heater jacket is
4. Appliances located in a garage or parking specially constructed to function as a drain pan.
structure shall be installed so that the A water discharge opening is located in either end
jacket and all piping shall be located or of the pan. The discharge opening(s) used must
protected so that it is not subject to be piped to a suitable floor drain. If only one
physical damage by a moving vehicle. discharge opening in the jacket pan is piped to a
floor drain, the unused opening must be plugged.
5. The appliance must be installed on a level This jacket pan provides an extra margin of
floor. Shim the base as necessary if protection against water damage on vertical
leveling is required.
square or horizontally constructed models.
6. The floor on which the appliance is
installed must be capable of supporting CAUTION:
the total weight of the water heater when completely filled with water. Combustible floor locations may be used. Maintain required clearances from combustible surfaces.
This water heater, as well as all water heaters will eventually leak. Installation of the water heater should be accomplished in such a manner that if the tank, piping or any connections should leak, the flow of
7.
The appliance must not be installed on carpet.
water will not cause damage to the structure. For this reason, it is not advisable to install the water heater in an
8.
The appliance must be installed indoors where it is protected from exposure to wind, rain and weather.
attic or upper floor. When such locations can not be avoided, a suitable drain pan must be installed under the water heater. Drain pans may be fabricated or
9.
Locate the appliance as close as possible to the point of major hot water usage, the water piping and branch electrical circuit wiring.
purchased from your plumbing wholesaler. The drain pan must be piped to an adequate drain. Under no circumstances is the manufacturer to be held liable for any water damage in connection with this
10. Insulate water piping to control heat loss water heater.
and possible condensation.
11. The appliance must be located in an area that is not subject to freezing. The ambient temperature of the space where the appliance is installed must not go below 32° F (0° C) or above 104° F (40° C).
5
CLEARANCES FROM COMBUSTIBLE CONSTRUCTION
12"
12"
6"
6"
36"
36"
FIG. 4 Clearances from Combustible Construction
FIG. 5 Clearances from Combustible Construction
12"
6"
FIG. 6 Clearances from Combustible Construction
TABLE A CLEARANCES FROM COMBUSTIBLE CONSTRUCTION
Right Side -
Rear Left Side Front Top Water Pipes -
6" (15cm) (24" (0.61m) for high kW vertical square models with an additional control panel on right side) 0" 0" 36" (0.91m) for service access to controls and heating elements 12" (30cm) for service access to electrical service, water connections and piping 1" (25.4mm)
6
Maintain minimum specified clearances for adequate operation. All installations must allow sufficient space for servicing the electrical components, water pipe connections, piping and other auxiliary equipment, as well as the appliance.
HOT WATER OUTLET
TEMPERATURE & PRESSURE RELIEF VALVE
Multiple appliances may be installed in a modular water heater installation. Multiple appliances may be installed side by side with minimum clearance between the sides of adjacent appliances because no service access is required from the sides on most models. Note that high kW input vertical square water heaters may have an additional control access panel located on the right side of the jacket requiring an additional service access from the right side.
MOUNTING
The water heater should be mounted to the floor following applicable architectural and local code requirements or accepted standards for the specific site and model purchased. In areas prone to seismic activity, it is recommended that the water heater be mounted to the floor according to recommended procedures for the site. In some geographic areas, additional strapping or braces may be required, consult local codes for specific requirements. Proper mounting will help to make the water heater less susceptible to seismic damage.
WATER CWOANTNEERCCTIOONNNSECTIONS
HANDHOLE CLEANOUT
DRAIN
COLD WATER INLET
FIG. 7 Water Connections- Vertical Round Models
TEMPERATURE & PRESSURE RELIEF VALVE
HOT WATER OUTLET
COLD WATER INLET
DRAIN PAN CONNECTION
FIG. 8 Water Connections- Vertical Square Models
HOT WATER OUTLET
TEMPERATURE & PRESSURE RELIEF VALVE
FIG. 9 Water Connections- Horizontal Models 7
MANWAY (OPTIONAL) COLD WATER INLET
DRAIN
NOTE:
Before making any
connections to the cold water inlet or hot
water outlet, insure that all piping is clean and
free of material or scale. This can usually be
accomplished by "blowing out the pipe." Any
(871°C) to insure a molecular fusing of glass and steel to protect the steel base metal against corrosion . A magnesium anode(s) is standard to help prevent dissipation of the tank material by electrolytic action.
foreign material or scale entering the water heater can adversely affect operation and
RELIEF VALVE
performance.
This water heater is supplied with a temperature
and pressure relief valve(s) sized in accordance
NOTE:
When using copper tubing,
solder tubing to an adapter before attaching
to the threaded nipple connection provided
on the water heater. Soldering directly to the
threaded connection may harm a lining in the
nipple or damage the tank lining.
with ASME Boiler and Pressure Vessel Code, Section IV. Some water heaters may be supplied with an optional pressure only relief valve. The relief valve(s) is installed in the vertical position and mounted in the tapping provided in the storage tank. No valve is to be placed between the relief valve and the water heater. To prevent
Inlet and Outlet Connections
water damage, the discharge from the relief valve must be piped to a suitable floor drain for
For ease of service, install unions on the cold water inlet and hot water outlet of the water heater. The cold water inlet connection is located on the lower right side of the water heater. A manual shutoff valve should be installed upstream on the cold water source as an isolation device. The hot water outlet connection is located on the top center of the water heater. A manual shutoff valve should be installed downstream on
disposal when relief occurs. No reducing couplings or other restrictions shall be installed in the discharge line. The discharge line shall allow complete drainage of the valve and line. Relief valves should be manually operated at least once a year. A relief valve that fails to completely reseat and continues to discharge water must be immediately replaced with a new, properly sized, temperature and pressure relief valve.
the hot water outlet source as an isolation device in case the water heater must be disconnected from the system.
CAUTION:
Avoid contact with hot
discharge water. Insure that no one is in
front of or around the relief valve discharge
line. Make sure that the extremely hot
STORAGE TANK
water manually discharged from the relief
This appliance uses a glass lined steel tank to store the heated water for use. The storage tank
valve will not cause bodily injury or property damage.
is constructed in accordance with the ASME Boiler and Pressure Vessel Code requirements,
THERMAL EXPANSION OF WATER
stamped and registered with the National Board of Boiler and Pressure Vessel Inspectors. The tank is furnished with threaded connections for cold water inlet, hot water outlet, a relief valve and a drain connection. The storage tank has a hand hole for ease of inspection, cleanout and service. An optional manhole may be specified for greater ease of inspection. The interior of the storage tank is glass lined and fired to 1600°F
A relief valve that discharges periodically may be due to thermal expansion in a closed system. A water heater installed in a closed system, such as one with a backflow preventer or check valve installed in the cold water supply, shall be provided with means to control expansion. Contact the water supplier or local plumbing inspector on how to correct this situation. DO NOT plug or cap the relief valve.
8
dischargeC! ATHODIC PROTECTION
Hydrogen gas can be produced in a hot water system that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of injury under these conditions, we recommend the hot water faucet be open for several minutes at a sink close to the water heater before you use any electrical appliance which is connected to the hot water system. If hydrogen is present, there will be an unusual sound such as air escaping through the pipe as the hot water begins to flow. There should be no smoking or open flames near the faucet at the time it is open.
ELECTRICAL CONNECTIONS
All installation procedures involving electric power connection should only be performed by a trained, certified electrician.
WARNING:
WATER HEATER IS
EQUIPPED FOR OPERATION ON ONE
VOLTAGE ONLY. Check the rating plate on
the front of the control panel access for the
correct voltage and phase. DO NOT use this
water heater with any other voltage other than
the voltage specified on the rating plate.
Failure to use the correct voltage can cause
problems that can result in death, serious
bodily injury or property damage.
CAUTION: DO NOT CONNECT THE WATER HEATER TO AN IMPROPER SOURCE OF ELECTRICITY!
The appliance, when installed, must be electrically grounded in accordance with the requirements of the authority having jurisdiction or in the absence of such requirements, with the latest edition of the National Electrical Code, NFPA No. 70. When the appliance is installed in Canada, it must conform to the CAE C22.1, Canadian Electrical Code, Part 1 and/or local Electrical Codes.
ELECTRIC ACCESS
HINGED DOOR TO ELECTRICAL COMPARTMENT
FIG. 10 Electric Power Connections Electrical Control Panel Round Models
1. Use copper conductors only. All wiring between the appliance and field installed devices shall be made with copper wire suitable for at least 75° C (167° F) temperature rating. If the wiring from an old water heater installation was aluminum, replace the old wire with copper wire.
2. The factory internal wiring is attached to a terminal block inside the unit. The branch circuit is connected to the terminal block through an opening provided on the top of the water heater electrical access panel.
ELECTRIC ACCESS
HINGED DOOR TO ELECTRIC CONTROL COMPARTMENT
FIG. 11 Electric Power Connections Electrical Control Panel Square Models
3. Line voltage wire exterior to the appliance must be enclosed in approved conduit or approved metal clad cable.
4. To avoid serious damage, DO NOT energize the appliance until the system is full of water. Ensure that all air is removed from the storage tank and piping before beginning
9
initial operation. Operation of a water heater without a completely filled tank may result in
STANDARD EQUIPMENT
serious damage to the appliance and heating Your commercial electric water heater is
element burn out.
equipped with the following as standard
equipment.
5. The water heater should be connected with a · Low watt density immersion heating
separate grounded branch circuit with over
elements with an incoloy sheath.
current protection and disconnect switch. The water heater should be grounded in accordance with national and local codes. A ground terminal is provided for ground connection only.
· Internal fusing of all elements in a maximum of 48 amp increments provides additional safety. Fuse cartridges are related at 1,000,000 amps interrupting
6. Provide the appliance with proper overload
capacity.
protection in the branch circuit. It is suggested · A galvanized steel outer jacket and
that the electrician size the branch circuit at 125
electrical control panel are provided.
percent of the heater ampere rating and further increase wire size as necessary to compensate
· Channel iron skid base.
for voltage drop in long runs. Branch circuit · Electrical control panel is provided with a
voltage drop should not exceed 3% at the heater.
hinged door and key lock.
7. Voltage applied to the heater should not vary more than +5% to -10% of the model and rating plate marking for satisfactory operation.
8. A wiring diagram is provided with the water heater for the electricians use.
CAUTION: Never turn on the electric power or attempt to use this electric water heater unless it is completely full of water. Water must flow from the hot water faucet before turning electrical power "ON." Operation of a water heater without a completely filled tank may result in serious damage to the appliance and heating element burn out
JACKET ASSEMBLY
· A glass lined steel tank constructed to ASME specifications and provided with magnesium anode(s).
· ASME rated temperature and pressure relief valve provided by factory to insure safe heater operation.
· Terminal block connections are installed by the factory for safe easy wiring connection.
· Manual reset high water temperature limit control.
· Immersion thermostat (one per 54kW of input as standard).
· 180°F (82.2°C) temperature operation is possible to provide water for sanitizing applications.
· Insulated to meet the latest edition of ASHRAE 90.1 energy efficiency standards.
Outer Jacket The outer jacket assembly is constructed from steel, galvanized on both sides. The galvanized surface is specially prepared and phosphate coated to allow application of a multiple coat enamel paint process. This coating process insures a long life from the jacket assembly.
· 3 year limited warranty provides protection against failure of tanks due to defects in material and workmanship in commercial application.
· Underwriter's Laboratories, Inc. listing for all models as a commercial electric water heater.
10
OPTIONAL EQUIPMENT
The following items are available as extra cost options.
COMPONENTS AND CONTROLS
· Electronic low water cut-off prevents energizing of the heater when it is not filled with water.
· Pilot lights Monitor on-off cycle of contactors.
· Manual limiting switches with indicating lights to permit heater kW input to be manually limited as desired.
· Temperature and pressure gauges are available installed flush with the jacket to monitor heater performance.
· Electronic step controller modulates power in-put and balances load to demand.
· Safety door interlock prevents opening of access door while heater is energized.
· Shunt trip disconnect provides power disconnect upon a control sensed malfunction.
· Alarm bell provides an audible alarm to warn of various control failures.
· Time clock to control off-on cycles of the heater as programmed by the owner or electric utility requirements.
· Low water pressure switch.
· High water pressure switch.
TERMINAL BLOCK GROUND LUG
POWER CIRCUIT FUSE BLOCK
CONTROL CIRCUIT FUSE BLOCK
IMMERSION THERMOSTAT
TRANSFORMER
LOW WATER CUTOFF
(IF EQUIPPED)
CONTACTOR (IF EQUIPPED)
CONTROL CIRCUIT FUSE BLOCK
FIG. 12 Electrical Panel Component Location Drawing
TERMINAL BLOCK
LOAD FIG. 13 Main Power Terminal Block
LINE
A main power terminal block is provided for field connection of the branch power supply to the electric water heater. All internal power circuits to the immersion heating elements are connected to the load side of the main terminal block. The line side of the terminal block has individual lug type connections properly sized for the recommended copper field wire size.
11
FUSE AND FLUE BLOCKS
The power to the immersion electric heating elements is switched by a definite purpose magnetic contactor. The contactor is supplied with 120 VAC from the control circuit when the immersion thermostat senses a drop in stored water temperature below the desired set point. A magnetic coil in the contactor is energized to complete the electrical circuit supplying power to the immersion heating elements. When the thermostat is satisfied, the contactor coil is deenergized and power to the heating elements is turned off.
FIG. 14 Fuse Block with Power Circuit Fuses
COCNOTNRTORLOCLIRCCIRUCIUTITTRTARNASNFSOFROMREMRER
Each internal power circuit is fused for safety. Each power circuit to an immersion element is fused at a maximum of 48 amps. Power circuits may be fused at lower current levels as needed to balance current on three phase units. The power circuit fuses are held by a spring loaded fuse block rated for the voltage specified to operate the water heater.
The control circuit is also fused on both the primary and secondary sides of the control circuit transformer.
FIG. 16 Control Circuit Transformer
CONTACTORS
A transformer is used to reduce the line voltage to 120 VAC for internal control operation. The transformer is fused on both the primary and secondary side. The common side of the secondary control circuit is grounded. The VA rating of the control circuit transformer is based on the load of the various components in the water heater control circuit.
FIG. 15 Magnetic Contactor
WARNING: HAZARD OF ELECTRICAL SHOCK Before opening the electrical access panel to adjust the thermostat or servicing the water heater, make sure the electrical supply to the water heater is turned "OFF". Failure to do this could result in death, serious bodily injury or property damage.
12
IMMERSION THERMOSTAT(S)
DANGER:
Full power is present whenever the cabinet door is opened, even with the pilot switch(es) turned off.
Set temperature control to the lowest setting which satisfies the hot water requirements of the system. Lower water temperatures help minimize scale formation on the heating elements. See thermostat information below. For sequencer specifications, consult controller literature.
WATER TEMPERATURE SETTINGS
FIG. 17 Immersion Thermostat with Adjustment Knob
This water heater uses an immersion thermostat(s) to activate magnetic contactors allowing current to flow to the immersion heating elements. The standard control system uses one immersion thermostat for each 54kW of electric heating power in a water heater. As an option, additional immersion thermostats may be provided to add additional steps of thermostatic control. The sensing bulb for each immersion thermostat is immersed in the stored water in the tank to provide quick, accurate response to changes in water temperature, The thermostat sensing bulb is located in the tank just above the elements it is controlling. The immersion thermostat set point is adjustable by rotating a knob on the control. Turning the knob counter clockwise decreases the temperature set point and turning the knob clockwise increases the set point. The temperature setting shown at the top of the knob is the selected set point. The immersion thermostat has a fixed 6°F (3.3°C) differential.
TEMPERATURE REGULATION
This water heater has an adjustable thermostat to control water temperature. The thermostat is factory pre-set at approximately 125° F (51.7° C) or less. Households with small children or invalids may require a 120° F (48.9° C) or lower temperature setting to reduce risk of scald injury. Some states may require a lower temperature setting. Check with your local codes or electric utility for local requirements governing the temperature setting. Remember, no water heating system will provide exact temperatures at all times. Allow a few days of operation at the setting to determine the correct temperature setting consistent with your needs.
NOTE: (1) This water heater, when set at the lower temperature setting, is not capable of producing hot water of sufficient temperature for sanitizing purposes. (2) Higher stored water temperature increases the ability of the heater to supply desired quantities of hot water, however remember:
WARNING: HAZARD OF ELECTRICAL SHOCK Before opening the electrical access panel to adjust the thermostat make sure the electrical supply to the water heater is turned "OFF".
CAUTION: Hotter water increases the risk of scald injury. Setting the temperature selector dial higher provides hotter water, which increases the risk of scald injury.
13
FIG. 18
DANGER
HOT! BURN
· Water temperature over 125°F can cause severe burns instantly or death from scalds.
· Children, disabled and elderly are at highest risk of being scalded.
· See instruction manual before setting temperature at heating appliance.
· If this appliance is used to produce water that could scald if too hot, such as domestic hot water use, adjust the outlet control (limit) or use temperature limiting valves to obtain a maximum water temperature of 125°F. SEE MANUAL.
WARNING:
WARNING: SHOULD OVERHEATING OCCUR OR THE TEMPERATURE CONTROLS FAILTO SHUT OFF,TURN OFF OR DISCONNECT THE ELECTRICAL SUPPLY AT THE MAIN POWER DISCONNECT EXTERNAL TO THE APPLIANCE.
TEMPERATURE ADJUSTMENT
1. Turn "OFF" the electrical power to the water heater. If the power disconnect point is out of sight, lock it in the open ("OFF") position and tag to prevent unexpected application of power.
2. Open the water heater's electrical access panel.
3. Adjust each immersion thermostat to the desired temperature setting by turning the adjusting knob. Each thermostat will be factory pre-set to approximately 125° F (51.7° C) or less as shipped.
4. Close the water heater's electrical access panel.
5. Turn "ON" the electrical power to the water heater.
DANGER:
· Water temperature over 125° F (51.7°C) can cause severe burns instantly or death from scalding.
· Children, disabled and elderly are at highest risk of being scalded.
CAUTION: The maximum temperature setpoint that should be set for the Immersion Thermostats or programmed into the Electronic Temperature Control Sequencer is 190° F ( 88° C)
ELECETLREOCNTIRCONIC TEMPTEERMAPTEURRAETURE CONTROCLOSNETQRUOELNSCEEQRUENCER
· See instruction manual before setting temperature at heating appliance.
· Feel water before bathing or showering.
· If this appliance is used to produce water that could scald if too hot, such as domestic hot water use, adjust the outlet control (limit) or use temperature limiting valves to obtain a maximum water temperature of 125° F (51.7° C).
Always close the electrical control panel door after making a temperature adjustment. Turn on electricity.
FIG. 19 Electronic Temperature Control with Digital Display
14
The water heater uses an optional adjustable electronic temperature control to provide staged ON/OFF control of the electric heating elements. Operation is based on temperature input from an immersion temperature sensor. The sensor is a positive coefficient platinum thermistor. The sensor is placed in a well located above the heating elements it is controlling. A liquid crystal display is provided to indicate sensed temperature and operating parameters. The temperature control may operate in as many as four stages of control. For more stages of operation, multiple electronic temperature control sequencers are installed and wired to operate in series.
Access to the control is achieved by opening the hinges control panel door covering the electrical components. Four programming keys are provided to program set point and differential values for each stage and to control the display. The four keys are Select, Up arrow, Down arrow and Enter.
Select Key - Sequentially prompts the user as to what parameter is being displayed: set point, differential, stage energized, operation mode (heat), indication of assigned stage (1,2,3). Once the last parameter value has been viewed, pressing the Select key will display the control values again from the beginning of the display loop.
125
1 2 3 4
Up and Down Arrow Keys - Allow the displayed parameter to be increased or decreased. After pressing the Select key, a control value can be changed by using the Arrow keys. Control values will be increased or decreased by 1° F for each time the Arrow keys are depressed.
Enter Key - Places the new value into the memory of the microprocessor.
FIG. 20 Electronic Temperature Control Digital Display and Programming Keys
IMPORTANT:
A control value or
operation will not be entered in the memory of
the microprocessor until the Enter key is
pressed.
SPECIFICATIONS Set Point Adjustment Range: Max setting
220° F (105° C). Temperature Accuracy: +/- 1° F.
Display Resolution: 1° F via Liquid Crystal
Display (LCD). Sensor: Thermistor 4.8 ohms/° F.
Control values and operation selection will remain in the device memory even after power is removed.
Select and Enter Keys simultaneously pressed - Changes operation mode of the control from heat to cool mode. DO NOT CHANGE THIS SETTING. This control must always be in the "HEAT" position for proper operation of the water heater.
Operating Humidity: 5 - 95% RH Noncondensing.
When all stages have been programmed the display will revert back to sensed temperature and load energized status.
Operating Ambient Temperature: -30° to 125° F.
15
DISPLAY
Once power is applied to the temperature controller the display will countdown from 210 until the display reads zero. All outputs are de-energized at this time. This countdown process will repeat each time main power is interrupted. To avoid viewing this entire countdown, press the Select key. The display will now show normal readings: load (sensed) temperature and stages energized. At any time during the programming procedure, the display will revert back to showing the sensed temperature and stage status indication 60 seconds after the last programming key is pushed.
point and differential the control will sequence both stages on and off with only a slight delay between switching of the stages. The control is normally programmed with a few degrees difference between the set point of each stage to sequence individual stages on as required by demand. This will allow input to be balanced to system demand. The exact settings will be determined by your system hot water requirements.
Based on your system requirements, determine the set point and switching differential for each stage of operation and enter into the worksheet below.
SETUP OF THE TEMPERATURE CONTROLLER
Each stage on the controller has its own independent set point and differential which are determined by the programming keys. Each stage of heating is de-energized as the sensed temperature reaches the programmed set point. Each available stage of heating is energized as the sensed temperature reaches the set point minus the differential.
EXAMPLE: Using stage one of the control as an example, the corresponding load would be energized and de-energized at the following temperatures based on the programmed settings.
Programming Worksheet
Stage 1: Set Point 1 ___________ Off at ___________ Differential 1 ________ On at __________
Stage 2: Set Point 2 ___________ Off at ___________ Differential 2 ________ On at __________
Stage 3: Set Point 3 ___________ Off at __________ Differential 3 ________ On at _________
Stage 4: Set Point 4 ___________ Off at __________ Differential 4 ________ On at _________
Settings Set point: 160o F Differential: 8o F Output Energized Stage One: Energized at 152o F Output De-energized Stage One: De-energized at 160o F
These values will be programmed into the temperature controller.
Each available stage of operation must be programmed with a set point and a differential. If two stages are programmed with the same set
16
PROGRAMMING
NOTE:
When power is initially
applied to a new water heater, the control
points will be pre-programmed. The
factory final quality test sets the unit for
test firing. The preset values are as follows:
WARNING: HAZARD OF ELECTRICAL SHOCK Full power is present whenever the cabinet door is open and the main power disconnect is in the "ON" position, even with the pilot switch(es) turned off.
5. To override this time delay, press Select.
Stage Set Point Differential
1
125° F 2° F
2
123° F 2° F
6. Press Select to display the current stage set point.
3
121° F 2° F
4
120° F 2° F
7. Press Up Arrow key to increase or Down Arrow key to decrease to the desired set point.
Re-program the set points and differentials to
meet your system hot water requirements.
8. Press Enter to enter the displayed value
into memory.
The operating control uses a Liquid Crystal Display for interactive prompting during programming and display of sensed and assigned set point and differential values. Programming is accomplished through the use of the four programming keys.
TEMPERATURE ADJUSTMENT
1. Turn "OFF" the electrical power to the water heater. If the power disconnect point is out of sight, lock it in the open ("OFF") position and tag to prevent unexpected application of power.
9. Press Select to display the current stage switching differential.
10. Press Up Arrow key to increase or Down Arrow key to decrease to the desired switching differential.
11. Press Enter to enter the displayed value into memory.
12. Repeat steps 6 through 11 to program each additional stage.
13. Press Select, Select, Select, Select (4 times)
2. Open the water heater's electrical access panel.
to return to stage 1 parameters. Scroll
3. Verify that the unit is properly applied and the model number on the rating plate correctly identifies the unit.
through the programming loop a second time to confirm that the appropriate values have been entered into memory by pressing Select.
4. Turn the electrical power switch to the "ON" position. The control will begin counting down from 210. This countdown sequence will last for approximately 3-1/2 minutes.
14. Press Select after viewing the switching differential for the final stage to display stored water temperature.
15. Close the water heater's electrical access panel.
16. The temperature control is now ready for operation.
17
NOTE:
The control values
programmed into memory will not be lost
because of a power failure.
ERROR MESSAGES DISPLAYED BY THE ELECTRONIC TEMPERATURE CONTROL
OE - ROM Error The internal ROM of the microprocessor in the boiler's electronic temperature control is defective. This error cannot be field repaired. Replace the water heater's electronic temperature control.
There are seven error messages that can be displayed in response to software or hardware problems with the boiler's internal electronic temperature control. The error codes that may be seen flashing on the display are:
AE - RAM Error The internal RAM of the microprocessor in the boiler's electronic temperature control is defective. This error cannot be field repaired. Replace the water heater's electronic temperature control.
SF - Sensor Failure The display flashing SF indicates an out-of-range or defective sensor. Make sure sensors are properly installed, wired and connected to the control. Correct sensor installation or replace sensor.
HIGH WATER TEMPERATURE LIMIT CONTROL
EF- EEPROM Failure The values read form the EEPROM are not the same as the values written into the EEPROM. This error cannot be field repaired. Replace the water heater's electronic temperature control.
CF - Calibration Failure The calibration resistor reading was not within the range of the Analog to Digital converter. This error cannot be field repaired. Replace the water heater's electronic temperature control.
OF - Stray Interrupt Failure An unused interrupt occurred. This error cannot be field repaired. Replace the water heater's electronic temperature control.
CE - Configuration Error The device hardware was configured to a nonexistent device. This error cannot be field repaired. Replace the water heater's electronic temperature control.
FIG. 21
High Water Temperature Limit Control - Fixed Setting
The unit is equipped with a fixed setting, manual reset high water temperature limit control. The water heater temperature limit control has a fixed limit setting of 195° F (90.6° C). If water temperature exceeds the limit set point, the limit will break the control circuit and shut down the unit. The limit control can only be reset after the water temperature has cooled below the set point of the limit. The high water temperature limit control is mounted on the surface of the tank, above the heating element installed at the highest point in the tank. The high limit control is reset by pushing the red reset button on the control. Operation of the limit control usually indicates a major problem with the thermostat, contactors or heating elements. Do not continue to push the
18
reset multiple times. The source of the problem must be found and corrected to insure proper operation. The limit control is covered with an insulation blanket which must be removed to push the red reset button. The blanket of insulation must be replaced before the power is turned on and the water heater is returned to service.
CAUTION: Disconnect the main power to the heater before opening the element access panel to reset the high limit control.
NOTE:
The high limit control will not
reset until the water temperature has
dropped below the set point of the high limit.
element blades are mounted on a single hex-head screw-in mounting flange. The element flange mounts into a 1 1/2" NPT threaded connection welded to the storage tank. The hex-head screwin mounting flange seals to the tank with an "O" ring gasket at the base of the threaded portion of the flange. The tank flange has a matching recess for the "O" ring gasket to insure a proper water tight seal. . The "O" ring element gasket must be replaced with a new gasket when an element is removed for inspection, cleaning or replacement.
SAFETY DOOR INTERLOCK (Optional)
IMMERSION HEATING ELEMENT
FIG. 23 Safety Door Interlock
FIG. 22 Immersion Heating Element
WARNING: HAZARD OF ELECTRICAL SHOCK Before opening the access panel to remove or service the immersion heating elements, make sure the electrical supply to the water heater is turned "OFF". Failure to do this could result in death, serious bodily injury or property damage.
The heating input to this commercial electric water heater is provide by low watt density immersion heating elements. The heating elements are constructed from an incoloy sheath with a tin plate on the exterior surface. Three
The optional safety door interlock is an electrically operated locking pawl that is energized when main power to the water heater is turned "ON." The interlock is mounted to the inside of the electrical control panel door and extends behind a locking flange when energized. Main power may be turned off and the electrical access door may be opened for service.
With the door open, main power may be energized if required to service or troubleshoot the operation of selected components.
DANGER: HAZARD OF ELECTRICAL SHOCK Full power is present whenever the cabinet door is opened and main power is turned "ON", even with the pilot switch(es) turned off.
19
LOW WATER CUTOFF (Optional)
LOW WATER PRESSURE SWITCH (Optional)
LED
Control Board
A low water pressure switch is available as an option on this water heater. A water pressure switch is used to monitor the water pressure in the water heater storage tank. If the water pressure drops below an adjustable set point, the control circuit is opened and operation of the water heater is shut down. The low water pressure switch may be specified with either a auto-reset function or a manual reset function on low water pressure.
Probe FIG. 24 Electronic Low Water Cut-off Control
HIGH WATER PRESSURE SWITCH (Optional)
This water heater may be equipped with an optional electronic low water cut-off installed at the factory. This low water cut-off device uses a water level sensing probe located above the heating element installed in the highest point in the storage tank. If the internal water level drops below this point, the low water cut-off will shut down operation of the heating elements. An electronic type low water cut-off is available as a factory supplied option on all models. The optional electronic low water cut-off has an LED located on the main circuit board. This LED will be illuminated and the control circuit will be completed between the common and normally open contacts on the circuit board when the sensing probe is below the water level in the storage tank. An optional manual reset function and test button is available on the electronic low water cut-off. The operation of a low water cutoff should be inspected every six months.
FIG. 26 High Water Pressure Switch
A high water pressure switch is available as an option on this water heater. A water pressure switch is used to monitor the water pressure in the water heater storage tank. If the water pressure rises above an adjustable set point, the control circuit is opened and operation of the water heater is shut down. The low water pressure switch may be specified with either a auto-reset function or a manual reset function on high water pressure.
MANUAL LIMITING SWITCHES (Optional)
FIG. 25 Low Water Pressure Switch
As an option, a switch or multiple switches may be provided to interrupt the 120 VAC control circuit feed to the contactor coil or coils from the immersion heating thermostat(s). This switch may be used to manually turn off a portion of the heating element input. This feature may be used to reduce
20
electrical input of the water heater in the summer months when ground water temperatures are warmer and full electrical input from the immersion heating elements is not required. The water heater may be restored to full input by moving the switches to the "ON" position.
TIME CLOCK (Optional)
PILOT LIGHTS (Optional)
The water heater may be provided with optional pilot lights to provide an external indicator for each contactor or stage of heating elements that is energized. Each pilot light is wired in parallel with the 120 VAC control circuit feed to the contactor coil(s). The pilot will be turned on as the contactor coil(s) is energized by the temperature controls.
SHUNT TRIP DISCONNECT (Optional)
FIG. 27 Time Clock
The water heater may be provided with an optional time clock. The time clock will allow the water heater to be turned on and off with a pre-set schedule. The time clock may be specified with a 24 hour scheduling period or with a 7 day scheduling period. By the adjustment of the setpoints on the time clock, the water heater may be turned off when hot water is not needed or in periods when the building may not be occupied. The time clock allows the water heater to automatically cycle on in advance of the time when hot water may be needed. This will insure that hot water is always available yet save energy when there are scheduled periods when there will be no requirement for hot water. This feature is especially useful for schools and building that are occupied on a fixed schedule. As an additional feature, time clocks may be furnished with a spring wound carry-over function to insure that a switching schedule is maintained in periods where there may be power interruptions. The time clock works by making and breaking the 120 VAC control circuit to the contactor coils to shut down operation of the heating elements in the desired time periods.
Shunt trip disconnect provides a power disconnect upon a control sensed malfunction via a circuit breaker installed in the main power supply to the water heater. The circuit breaker is shipped as a separate item that must be field installed. The water heater 120 VAC control circuit provides a feed to the circuit breaker that will shut down main power on either a low water level condition (if equipped) or high water temperature. Once the water heater is installed and all power is connected, the toggle switch that arms the shunt trip must be placed in the on position to provide the shunt trip function on the desired control sensed malfunction.
ALARM BELL (Optional)
FIG. 28 Alarm Bell
21
An alarm bell with silencing switch is available as an option on this water heater. The alarm bell can be used to provide an audible indication of a control sensed malfunction. The user must specify the safety function or multiple safety functions that the alarm bell will sound on when the water heater is ordered from the factory. The alarm bell typically is used to indicate a low water condition or a high water temperature condition. The alarm is furnished with a silencing switch to turn off the audible alarm while trouble shooting a control sensed malfunction that is indicated by an audible alarm. Once the control sensed malfunction is corrected, the silencing switch must be returned to the "ON" position to re-establish the audible alarm function.
START-UP PROCEDURE
Never operate the heating elements without being certain the water heater is filled with water and a temperature and pressure relief valve is installed in the relief valve opening on top of the heater.
the water heater's temperature and pressure relief valve opens to relieve the excess pressure. The temperature and pressure relief valve is not intended for the constant relief of thermal expansion. This is an unacceptable condition and must be corrected. Do not plug or cap the relief valve discharge! A properly sized expansion tank is typically installed in the potable water system to relieve the pressure built up by thermal expansion of heated water. Consult your local plumbing contractor and plumbing wholesaler for assistance in properly selecting an expansion tank for your system.
As the water heater operates, there may be noises generated by the expansion and contraction of the metal parts of the water heater and related piping. These noises may occur during periods of heat up or cool down. They do not represent harmful or dangerous conditions.
FILLING THE WATER HEATER
The pilot switch(es) (if equipped) mounted on the 1. Insure that the electrical power to the water control cabinet permit the heater to be turned on and off heater is in the "OFF" position. If the power without having to operate the electrical disconnect disconnect point is out of sight, lock it in the switch. The pilot switch interrupts only the 120 VAC open ("OFF") position and tag to prevent control circuit in the water heater. Full power is still unexpected application of power.
present at the terminal block, fuses and contactors. DANGER:
2. Close the water heater drain valve(s).
Full power is present whenever the cabinet 3. Open a nearby hot water faucet to allow the
door is opened, even with the pilot
air in the system to escape as the tank fills.
switch(es) turned off. THERMAL EXPANSION OF WATER
4. Fully open the cold water inlet valve to the water heater to begin filling the heater and piping.
A relief valve that discharges periodically may be due to thermal expansion in a closed system. Many water systems are equipped with pressure reducing valves, check valves or back flow preventers which may cause the water system to be closed. As water is heated it will expand in volume due to thermal expansion. The system must make allowance for this expansion. If an expansion tank is not provided in the system, water pressure may increase to the point where
NOTE:
The cold water supply must be
left in the open position when the water
heater is in use.
5. Check the nearby hot water faucet to verify that air is exiting the tank as it fills with water. Allow water to run until a constant flow is obtained at the faucet. This will insure that all air is purged from the system.
22
CAUTION: The power supply must remain off until the water heater and all related piping are completely filled with water to insure that there will not be a possible problem with heating element burn out.
6. While the tank is filling, open the electrical control panel and set the thermostat(s) to the desired water temperature. If equipped with multiple thermostats, all individual thermostats may be adjusted to the same temperature set point or they may be set a 2°F to 4°F (1°C to 2°C) apart to step the elements on in stages.
7. Insure that any pilot switches or manual limiting switches are placed in the "ON" position.
13. As the water heater starts heating, check the contactors for "buzzing" or "chattering" during operation. If noise is detected, turn off main power, open the control panel and clean the contact points of the magnetic contactor(s). Remove any dust, dirt or foreign matter that may have found its way into the contactor or other electrical components in the control panel during shipping, installation or service.
14. Close the electrical control panel and turn on main power.
15. The water heater is now ready for normal operation.
INITIAL START-UP CHECKS
8. When a constant flow is obtained at the faucet, it may be turned off. The temperature and pressure relief valve should be manually opened to insure that there is no captive air in the storage tank. A constant stream of water must flow from the manually opened relief valve. Release the handle on the relief valve and allow it to close after water flow is observed.
9. Carefully check the tank, pipe and fittings for any sign of a water leak. Immediately repair as needed. Open the access door to the immersion heating elements and check for leaks at the element mounting flanges. If any leak is detected, tighten the screwin element.
START-UP
The following checks should be made by the installer when the water heater is placed into operation for the first time.
WARNING: HAZARD OF ELECTRICAL SHOCK Before opening the access panel to perform service on any electrical component, make sure the electrical supply to the water heater is turned "OFF". Failure to do this could result in death, serious bodily injury or property damage.
1. Allow the water heater to heat for approximately thirty minutes after following the filling and start up procedures.
10. Insure that the electrical access panel (field wiring compartment) is closed and the heating element access panel is in place before proceeding.
2. Turn off the main electrical power to the water heater. If the power disconnect point is out of sight, lock it in the open ("OFF") position and tag to prevent unexpected
11. After assuring that the tank is completely application of power.
filled with water and no leaks are detected,
you are now ready to start operation of the 3. Open the electrical control panel door and
water heater.
feel each wire connection and fuse clip for
12. Turn on the electric power at the main disconnect point. The contactors should be energized as the elements start to heat the water in the tank.
23
excessive temperature. If any connection is found to be excessively hot, check the tightness of the connection. Check all factory internal wiring connections and the field made main power connections for tightness.
4. Close and lock the electrical control panel door.
5. Turn on the main electrical power to the water heater.
6. Temperature control and contactor operation should be checked by allowing the water heater to come up to temperature and shut off automatically.
7. The water heater is now ready continuous normal operation.
SHUTDOWN PROCEDURE
Draining the Water Heater 1. Turn off the main electrical power to the
water heater. If the power disconnect point is out of sight, lock it in the open ("OFF") position and tag to prevent unexpected application of power.
2. Turn the valve in the water heater's cold water supply to the closed or "OFF" position.
3. Turn the valve in the water heater's hot water outlet to the closed or "OFF" position.
4. Manually open the temperature and pressure relief valve to remove any pressure from the storage tank.
CAUTION: Any water discharged from the manually opened relief valve may be hot and cause a scald injury.
6. The water heater is now shut down and ready for service or maintenance.
7. Follow the filling and start up procedure to place the water heater back into service.
MAINTENANCE
Listed below are items that must be checked to insure safe reliable operations. Verify proper operation after servicing.
WARNING: HAZARD OF ELECTRICAL SHOCK Before opening the access panel to perform service on any electrical component, make sure the electrical supply to the water heater is turned "OFF". Failure to do this could result in death, serious bodily injury or property damage.
CAUTION:
Label all wires prior to
disconnection when servicing controls.
Wiring errors can cause improper and
dangerous operation.
TEMPERATURE AND PRESSURE RELIEF VALVE OPERATION
The temperature and pressure relief valve(s) should be manually operated at least once a year. A relief valve that fails to completely reseat after manual operation and continues to discharge water must be immediately replaced with a new, properly sized, temperature and pressure relief valve.
5. Allow the system to cool and then open the drain valve to empty the storage tank. It will be necessary to manually hold the temperature and pressure relief valve in the open position to break the vacuum in the tank and allow it to vent and drain. Insure that the water heater drain is routed to a properly sized floor drain to allow the water to be removed from the tank. If a floor drain is not available, a hose may be attached to the water heater drain to take the water outdoors.
The relief valve(s) should be installed in the vertical position and mounted in the tapping provided in the storage tank. No valve should be placed between the relief valve, and the water heater. To prevent water damage, the discharge from the relief valve must be piped to a suitable floor drain for disposal when relief occurs. No reducing couplings or other restrictions shall be installed in the discharge line. The discharge line shall allow complete drainage of the valve and line. The discharge line from the relief valve
24
should be metallic pipe or a high temperature plastic pipe (CPVC, etc.) to insure that hot water flow will not damage the discharge piping from the relief valve.
Water heater maintenance includes periodic tank flushing, cleaning and removal of lime scale from the heating elements. Where used, the water heating system circulating pump should be oiled.
CAUTION:
Avoid contact with hot
discharge water. Insure that no one is in
front of or around the relief valve
discharge line. Make sure that the
extremely hot water manually discharged
from the relief valve will not cause bodily
injury or property damage.
FLUSHING THE STORAGE TANK
1. Turn off main power at the electrical disconnect switch.
2. Open the drain valve. Allow water to flow until it runs clean.
3. Close the drain valve when finished flushing.
WATER CHEMISTRY
4. Turn on the electrical disconnect switch
In hard water areas, water treatment should be (after filling).
used to reduce the introduction of minerals to the system. Minerals in the water can collect in the
SEDIMENT REMOVAL
storage tank and on the immersion heating
elements causing noise on operation. Excessive Water born impurities consist of dissolved
build up of minerals on the surface of the heating minerals which precipitate out of the heated water
elements can reduce the service life of the and fine particles of soil and sand which settle out
elements and lead to a non-warrantable failure. and form a layer of sediment on the bottom of the
tank. In time, if not removed, the level of
Proper operation of this electric water heater is sediment might reach the heating elements.
based on heating potable water with a hardness of
5 to 25 grains per gallon and a total dissolved For convenience, sediment removal and element
solids not exceeding 350 PPM. Consult the lime scale removal should be performed at the
manufacturer when heating potable water same time as follows:
exceeding these specifications. Heating of high
hardness and/or high total dissolved solids water Sediment and Lime Scale Removal
may require frequent cleaning of the storage tank
and heating elements to achieve proper operation. Sediment and lime scale accumulation on the
The higher the level of dissolved solids or water heating elements is a normal condition
hardness, the faster the dissolved minerals in the common to all immersion type elements. Factors
water will precipitate out and form scale deposits which affect the amount of this formation are:
on the heating elements and in the storage tank.
The level of scale formation is also accelerated 1. Amount of hot water used. As the volume
as stored water temperature increases. Water with of water increases, more scale results.
a hardness of less than 5 grains per gallon will
usually have a low pH which can be aggressive 2. Water temperature. As the temperature of the
and corrosive causing non-warrantable damage to water is increased, more scale is deposited on
the storage tank, heating elements and associated the elements.
piping. Corrosion due to water chemistry
generally shows up first in the hot water system 3. Characteristics of water supply. Regardless
because heated water increases the rate of of water treatment, the elements should be
corrosive chemical reactions.
examined regularly.
25
Scale accumulation in the bottom of the storage tank may be removed by turning off main power and draining the tank. Once all water is removed, the hand hole access can be removed. This will allow large accumulations of scale to be cleaned from the bottom of the tank.
NOTE:
All gaskets on disassembled
clean-out openings must be
replaced with new gaskets on re-assembly.
Gaskets are available from your distributor.
Water scale accumulations on the immersion heating element reduce the ability of the elements to heat water and may cause noise to occur during operation. It is recommended that a heating element be removed at least once a year for examination. If it is scaled, all of the elements should be removed and cleaned. The element gasket must be replaced when the element is removed for cleaning.
Small accumulations of lime scale may be removed with a stiff bristle brush. Severe accumulations of lime scale should be removed by dissolving the accumulation in a commercial delimer. Do not use muratic or hydrochloric acid base deliming solutions to remove lime scale from the elements. Do not pour delimer into tank. Deliming solutions may damage the glass lined interior of the tank
DANGER:
3. Disconnect the wires attached to the element terminals. Try not to disturb the wiring unnecessarily and reconnection will be easier.
4. Loosen the screw-in element flange with a socket and breaker bar. Do not use an impact gun (air or electric) to remove the element flanges from the tank. Mark the location of each element in the tank openings so they may be returned to their original position.
5. Remove the elements from the opening with a twisting, pulling action if the elements are scaled beyond the size of the tank flange openings. Brush loose scale from elements.
6. Place scaled ends of heating elements into a delimer solution and allow scale to dissolve. Do not permit delimer or water to contact heating element electrical terminals.
7. Flush clean ends of elements with water when deliming or cleaning is completed.
8. Clean remaining gasket recess on each screw-in element flange. Do not reuse element gaskets.
9. Install a new gasket on each element. Install element into the tank opening where it was originally installed. Tighten the flange with the socket and breaker bar used to remove the element.
Keep all delimers away from anode rods to prevent the formation of flammable and explosive gas.
1. Drain the heater following "SHUTDOWN PROCEDURE" instructions.
2. On some high kW input models it is necessary to remove a side panel to gain access to the exposed ends of the elements which are not accessible through the front element access door.
10. Attach wires to element terminals from which they were removed.
11. Follow "FILLING THE WATER HEATER" instructions to restore hot water service. Check for water leaks around elements and proper operation when heater is filled.
26
TROUBLE SHOOTING
Checklist Before calling for service, check the following points to see if the cause of trouble can be identified and corrected. Reviewing this checklist may eliminate the need of a service call and quickly restore hot water service.
Not enough or no hot water
5. Cold incoming water temperature will lengthen the time required to heat water to the desired temperature. If the heater was installed in the summer when incoming water temperature was warm, colder ground water in the winter months can create the effect of less hot water.
6. Look for wasted hot water and leaking or open hot water faucets.
1. Ensure that the electrical disconnect switch serving the water heater is in the "ON" position. The pilot switch(es) on the cabinet should also be in the on position. In some areas, water heater electrical service may be limited by the power company. If the heater operates on a controlled circuit, heater recovery may be affected.
7. Sediment or lime scale may be affecting water heater operation. Refer to "Maintenance" for details.
Water is too hot Refer to "Temperature Regulation" and reset the thermostat setpoint to a lower temperature that will meet requirements for hot water
2. Check the fuses. The electrical disconnect switch usually contains fuses. The water heater has fuses located behind the cabinet front door. When replacing internal fuses in the water heater control panel, insure that the same type and size of fuse is used.
3. If the water was excessively hot and is now cold, the manual reset high limit may have operated.
To reset, turn off electricity and push the reset button. The high limit is located above the upper most heating element in the storage tank. On some high input models additional hi limits may be located behind the side access panel. Repeat operation of the high temperature cut-off should be investigated by your mechanical contractor or by a qualified technician. A contactor or thermostat may be malfunctioning.
4. The capacity of the heater may have been exceeded by a large demand for hot water. Large demands require a recovery period to restore water temperature.
Water heater makes sounds 1. Sediment or lime scale accumulation on the
elements causes sizzling and hissing noises, when the heater is operating. If this occurs, the tank bottom and elements should be cleaned. Refer to "MAINTENANCE" for details.
2. Some of the electrical components of the water make sounds which are normal. Contactors will "click" or snap as the heater starts and stops. Transformers and contactors often hum.
Water leakage is suspected 1. Check to see if the drain valve is
tightly closed.
2. The apparent leakage may be condensation which forms on cool surfaces of the heater and piping.
3. If the outlet of the relief valve if leaking, it may represent: a. Excessive water pressure. b. Excessive water temperature. c. Faulty relief valve.
27
Excessive water pressure is not the most common cause of relief valve leakage. It is often caused by a "closed system." A check valve, back flow preventer or pressure reducing valve, in the inlet system will not permit the expanded hot water volume to equalize pressure with the main. A relief valve must release this water or the water heater and plumbing system will be damaged.
When such a condition is encountered, local codes or inspection agency should be consulted to determine which of the following procedures is acceptable in your area.
· Installation of an expansion tank. · Removal of the check valve.
4. Examine the flange area of the elements for gasket leakage. Tighten the screw-in flange or, if necessary, follow the "Water and Lime Scale Removal" procedure to remove the element and replace the "O" ring gaskets that seal each element.
IF YOU CANNOT IDENTIFY OR CORRECT THE SOURCE OF MALFUNCTION:
1. Place the water heater electrical disconnect switch on the "OFF" position.
2. Contact your mechanical contractor or service technician.
28
CP-5M-5/02-Reprinted in U.S.A.
Lochinvar Corporation Nashville, Tennessee 615-889-8900 Fax: 615-547-1000 www.Lochinvar.com
Electrical Data CHP-WI-03 CHP-AMP-01
ELECTRICAL DATA FOR CUSTOM HI POWER®
AMP CHART
Total Ele. KW KW 12 12
15 15
18 18
24 12
30 15
36 18
45 15
54 18 n
Qnty Volt. 1 208 240 380 415 480 600 1 208 240 380 415 480 600 1 208 240 380 415 480 600 2 208 240 380 415 480 600 2 208 240 380 415 480 600 2 208 240 380 415 480 600 3 208 240 380 415 480 600 3 208 240 380 415 480 600
Total AMPS 1Ø 3Ø 58 33 50 29 ** 18 ** 17 ** 14 ** 12 73 42 63 36 ** 23 ** 21 ** 18 ** 14 87 50 75 44 ** 27 ** 25 ** 22 ** 17 115 67 100 58 ** 36 ** 33 ** 29 ** 23 145 83 125 72 ** 46 ** 42 ** 36 ** 29 174 100 150 87 ** 55 ** 50 ** 43 ** 35 217 125 188 108 ** 68 ** 63 ** 54 ** 43 260 150 225 130 ** 82 ** 75 ** 65 ** 52
Main Line Fuse
1Ø 3Ø 80 50 70 40 ** 25 ** 25 ** 20 ** 15 110 60 110 50 ** 30 ** 30 ** 25 ** 20 110 70 110 60 ** 35 ** 35 ** 30 ** 25 150 90 150 80 ** 50 ** 50 ** 40 ** 30 200 110 175 100 ** 60 ** 60 ** 50 ** 40 225 150 200 110 ** 70 ** 70 ** 60 ** 45 300 175 250 150 ** 90 ** 80 ** 70 ** 60 350 200 300 175 ** 110 ** 100 ** 90 ** 70
Field Wire
Per Leg
1Ø 3Ø
4
8
4
8
** 12
** 12
** 12
** 12
3
6
4
6
** 10
** 10
** 12
** 12
2
4
3
6
**
8
**
8
** 10
** 12
0
3
0
4
**
6
**
6
**
8
** 10
3/0
2
2/0
2
**
6
**
6
**
6
**
8
4/0
0
3/0
2
**
4
**
4
**
6
**
8
300 3/0
250 2/0
**
3
**
4
**
4
**
6
400 4/0
350 3/0
**
2
**
2
**
3
**
4
Total Ele. KW KW 60 15
72 18
90 15
108 18
120 15
135 15
144 18
162 18
Qnty Volt. 4 208 240 380 415 480 600 4 208 240 380 415 480 600 6 208 240 380 415 480 600 6 208 240 380 415 480 600 8 208 240 380 415 480 600 9 208 240 380 415 480 600 8 208 240 380 415 480 600 9 208 240 380 415 480 600
Total AMPS 1Ø 3Ø 289 167 250 144 ** 91 ** 83 ** 72 ** 58 ** 200 ** 173 ** 109 ** 100 ** 87 ** 69 ** 250 ** 217 ** 137 ** 125 ** 108 ** 87 ** 300 ** 260 ** 164 ** 150 ** 130 ** 104 ** 333 ** 289 ** 182 ** 167 ** 144 ** 115 ** 375 ** 325 ** 205 ** 188 ** 162 ** 130 ** 400 ** 346 ** 219 ** 200 ** 173 ** 139 ** 450 ** 390 ** 246 ** 225 ** 195 ** 156
Main Line Fuse
1Ø 3Ø 400 225 350 200
** 125 ** 110 ** 100 ** 80 ** 250 ** 225 ** 150 ** 125 ** 110 ** 90 ** 350 ** 300 ** 175 ** 175 ** 150 ** 110 ** 400 ** 350 ** 225 ** 200 ** 175 ** 150 ** 450 ** 400 ** 250 ** 225 ** 200 ** 150 ** 500 ** 450 ** 300 ** 250 ** 225 ** 175 ** 500 ** 450 ** 300 ** 250 ** 225 ** 175 ** 600 ** 500 ** 350 ** 300 ** 250 ** 200
Field Wire
Per Leg
1Ø 3Ø
500 4/0
400 4/0
**
1
**
2
**
2
**
4
** 250
** 4/0
**
0
**
1
**
2
**
3
** 500
** 350
** 3/0
** 3/0
** 2/0
**
2
** (2) 3/0
** 500
** 4/0
** 3/0
** 2/0
**
0
** (2) 4/0
** (2) 3/0
** 250
** 4/0
** 3/0
**
0
** (2) 250
** (2) 4/0
** 350
** 250
** 4/0
** 2/0
** (2) 250
** (2) 4/0
** 350
** 250
** 4/0
** 2/0
** (2) 350
** (2) 250
** 500
** 350
** 250
** 3/0
ELECTRICAL DATA FOR CUSTOM HI POWER®
AMP CHART continued
Total Ele. KW KW Qnty Volt. 180 18 10 208
240 380 415 480 600 216 18 12 208 240 380 415 480 600 234 18 13 208 240 380 415 480 600 252 18 14 208 240 380 415 480 600 270 18 15 208 240 380 415 480 600 288 18 16 208 240 380 415 480 600 306 18 17 208 240 380 415 480 600 324 18 18 208 240 380 415 480 600
Total AMPS 1Ø 3Ø ** 500 ** 433 ** 273 ** 250 ** 217 ** 173 ** 600 ** 520 ** 328 ** 301 ** 260 ** 208 ** 650 ** 563 ** 356 ** 326 ** 281 ** 225 ** 694 ** 606 ** 383 ** 351 ** 303 ** 242 ** 749 ** 650 ** 410 ** 376 ** 325 ** 260 ** 799 ** 693 ** 438 ** 401 ** 346 ** 277 ** 849 ** 736 ** 465 ** 426 ** 368 ** 294 ** 899 ** 779 ** 492 ** 451 ** 390 ** 312
Main Line Fuse
1Ø 3Ø ** 700 ** 600 ** 350 ** 350 ** 300 ** 225 ** 800 ** 700 ** 450 ** 400 ** 350 ** 300 ** 1000 ** 800 ** 500 ** 450 ** 400 ** 300 ** 1000 ** 800 ** 500 ** 450 ** 400 ** 350 ** 1000 ** 1000 ** 600 ** 500 ** 450 ** 350 ** 1000 ** 1000 ** 600 ** 600 ** 450 ** 350 ** 1200 ** 1000 ** 600 ** 600 ** 500 ** 400 ** 1200 ** 1000 ** 700 ** 600 ** 500 ** 400
Field Wire Per Leg 1Ø 3Ø ** (2) 500 ** (2) 350 ** 500 ** 500 ** 350 ** 4/0 ** (3) 300 ** (2) 500 ** (2) 4/0 ** (2) 3/0 ** 500 ** 350 ** (2) 400 ** (2) 300 ** (2) 250 ** (2) 4/0 ** (2) 3/0 ** 350 ** (3) 400 ** (3) 300 ** (2) 250 ** (2) 4/0 ** (2) 3/0 ** 500 ** (3) 400 ** (3) 400 ** (2) 350 ** (2) 250 ** (2) 4/0 ** 500 ** (3) 400 ** (3) 400 ** (2) 350 ** (2) 350 ** (2) 4/0 ** 500 ** (4) 350 ** (3) 400 ** (2) 350 ** (2) 350 ** (2) 250 ** (2) 3/0 ** (4) 350 ** (3) 400 ** (2) 500 ** (2) 350 ** (2) 250 ** (2) 3/0
Total Ele. KW KW 342 18
360 18
378 18
396 18
414 18
432 18
Qnty Volt. 19 208
240 380 415 480 600 20 208 240 380 415 480 600 21 208 240 380 415 480 600 22 208 240 380 415 480 600 23 208 240 380 415 480 600 24 208 240 380 415 480 600
Total AMPS 1Ø 3Ø ** 949 ** 823 ** 520 ** 476 ** 411 ** 329 ** 999 ** 866 ** 547 ** 501 ** 433 ** 346 ** 1049 ** 909 ** 574 ** 526 ** 455 ** 364 ** 1099 ** 953 ** 602 ** 551 ** 476 ** 381 ** 1149 ** 996 ** 629 ** 576 ** 498 ** 398 ** 1199 ** 1039 ** 656 ** 601 ** 520 ** 416
Main Line Fuse
1Ø 3Ø ** 1200 ** 1200 ** 700 ** 600 ** 600 ** 450 ** 1600 ** 1200 ** 700 ** 700 ** 600 ** 450 ** 1600 ** 1200 ** 800 ** 700 ** 600 ** 500 ** 1600 ** 1200 ** 800 ** 700 ** 600 ** 500 ** 1600 ** 1600 ** 800 ** 800 ** 700 ** 500 ** 1600 ** 1600 ** 1000 ** 800 ** 700 ** 600
Field Wire Per Leg 1Ø 3Ø ** (4) 350 ** (4) 350 ** (2) 500 ** (2) 350 ** (2) 350 ** (2) 4/0 ** (5) 400 ** (4) 350 ** (2) 500 ** (2) 500 ** (2) 350 ** (2) 4/0 ** (5) 400 ** (4) 350 ** (3) 300 ** (2) 500 ** (2) 350 ** (2) 250 ** (5) 400 ** (4) 350 ** (3) 300 ** (2) 500 ** (2) 350 ** (2) 250 ** (5) 400 ** (5) 400 ** (3) 300 ** (3) 300 ** (2) 500 ** (2) 250 ** (5) 400 ** (5) 400 ** (3) 400 ** (3) 300 ** (2) 500 ** (2) 350
Consult factory for 432 kW and higher.
07/07-Printed in U.S.A.
Lochinvar Corporation Nashville, Tennessee 615-889-8900 Fax: 615-547-1000 www.Lochinvar.com
Wiring Diagrams CHP-WI-04
CUSTOM HI-POWER
IMMERSION THERMOSTAT WITH OPTIONS (Control Circuit)
BASIC IMMERSION THERMOSTAT (Control Circuit)
LIT0716 Rev. A
WIRE COLOR CODE
R--Red
W--White
B--Black
BL--Blue
G--Green
NOTE--Diagrams do not show wiring from terminal block to fuses, contactors, and heating elements. Control circuit only is shown.
LIT0717 Rev. A
CUSTOM HI POWER® (CHP) WIRING DIAGRAMS
SOLID STATE STEP CONTROL WITH OPTIONS (Control Circuit)
MAIN TERMINAL BLOCK
WIRE COLOR CODE
R--Red B--Black
W--White BL--Blue
NOTE--Diagrams do not show wiring from terminal block to fuses, contactors, and heating elements. Control circuit only is shown.
POWER CIRCUIT (ONE WIRE PER ELEMENT)
MAIN TERMINAL BLOCK
FUSE BLOCKS
LIT0709 Rev. A
CIRCUIT LIMITED TO 48 AMPS
CONTACTORS
HEATING ELEMENT
2
Power Circuits fused when total amperage exceeds 120 amps.
LIT0712 Rev. A
CUSTOM HI POWER® (CHP) WIRING DIAGRAMS
POWER CIRCUIT (TWO WIRES PER ELEMENT)
MAIN TERMINAL BLOCK
FUSE BLOCK
CONTACTOR
Power Circuits fused when total amperage exceeds 120 amps.
CIRCUIT LIMITED TO 48 AMPS
HEATING ELEMENT
POWER CIRCUIT (THREE WIRES PER ELEMENT)
Power Circuits fused when total amperage exceeds 120 amps.
MAIN TERMINAL BLOCK
LIT0713 Rev. A
FUSE BLOCKS
CONTACTORS
CIRCUIT LIMITED TO 48 AMPS
HEATING ELEMENT
3
LIT0714 Rev. A
Lochinvar Corporation Nashville, Tennessee
615-889-8900 Fax: 615-547-1000 www.Lochinvar.com
07/07-Printed in U.S.A.
Custom Hi-Power ® Commercial Electric Water Heaters
150 to 2500 Gallons Storage Vertical and Horizontal
Energy Saving Performance
Dimensions
Vertical Round Models 150-1000
Vertical Square Models 1250-2500
TOP VIEW
Horizontal Models
*An oversized control panel may be required on models with inputs above 72 kW. An oversized control panel may increase the width and depth of the square jacket by up to 2".
TOP VIEW
2
Specifications
Max. Gal.
Model
KW Cap.
A
B
Vertical Round
HV*kW-150
135
150
65-1/2" 32"
HV*kW-200
180
200
78"
32"
HV*kW-250
216
250
92"
34"
HV*kW-300
270
300
80"
40"
HV*kW-400
360
400
80"
46"
HV*kW-500
396
500
92"
46"
HV*kW-600
396
600
92"
52"
HV*kW-800
396
750
104"
52"
HV*kW-1000 396
950
128"
52"
C
D
38-3/4" 38-3/4" 40-3/4" 46-3/4" 52-3/4" 52-3/4" 60-3/4" 60-3/4" 60-3/4"
7-3/4" 7-3/4" 19-1/2" 21" 22-1/2" 22-1/2" 24-1/2" 24-1/2" 24-1/2"
Water
Conn.
Inlet Outlet
1-1/2" 1-1/2"
1-1/2 " 1-1/2"
1-1/2 " 1-1/2"
2"
2"
2"
2"
2"
2"
2-1/2" 2-1/2"
2-1/2" 2-1/2"
2-1/2" 2-1/2"
Shipping Weight
(.lbs) 650 750 1,165 1,350 1,590 1,700 2,010 2,450 3,160
NOTES: Vertical Round models above 90 kW at 208V, 240V or 380V, and 162 kW at 415V, 480V, or 600V exceed the capacity of a single control box and may require multiple control panels. Consult the factory for specific details and optional construction. Vertical Square construction is available as an option for models that exceed the listed kW limits. Control panel height on Vertical Round models may exceed tank height consult factory for specific heights on models with inputs above 72 kW.
Vertical Square
HV*kW-1250 900 1,250
132-1/2" 64-1/2" 64-1/2" 23-1/4"
3"
3"
3,560
HV*kW-1500 900 1,500
128-1/2" 70-1/2" 70-1/2" 25-1/4"
3"
3"
4,120
HV*kW-2000 900 2,000
140-1/2" 76-1/2" 76-1/2" 27-1/4"
3"
3"
4,350
HV*kW-2500 900 2,500
146-1/2" 82-1/2" 82-1/2" 29"
3"
3"
5,750
Horizontal Square
HH*kW-150
135
150
37"
68-1/2" 34-1/4" 12"
2"
2"
1,180
HH*kW-200
180
200
37"
78"
34-1/4" 12"
2"
2"
1,370
HH*kW-250
225
250
39"
90-1/4" 36-1/4" 13"
2"
2"
1,450
HH*kW-300
270
300
45"
78-1/4" 42-1/4" 14-3/4"
2"
2"
1,530
HH*kW-400
360
400
52"
78-1/4" 48-1/4" 16"
2"
2"
1,750
HH*kW-500
450
500
52"
90-3/4" 48-1/4" 16"
2"
2"
1,860
HH*kW-600
540
600
58"
90-3/4" 54-1/4" 13-1/2"
2-1/2" 2"
2,340
HH*kW-800
720
750
58"
102-1/4" 54-1/4" 13-1/2"
2-1/2" 2"
2,850
HH*kW-1000 900
950
58"
126-1/4" 54-1/4" 13-1/2"
2-1/2" 2"
3,040
HH*kW-1250 900 1,250
64"
130-1/4" 60-1/4" 15"
3"
3"
3,750
HH*kW-1500 900 1,500
70"
126-1/4" 66-1/4" 16"
3"
3"
4,340
HH*kW-2000 900 2,000
76"
137-1/4" 72-1/4" 17-1/2"
3"
3"
4,580
HH*kW-2500 900 2,500
82"
144-1/4" 78-1/4" 16-1/2"
3"
3"
6,060
* = Voltage
kW = Kilowatt
VOLTAGE SCHEDULE
J--208V 1ø K--208V 3ø A--240V 1ø B--240V 3ø W--277V 1ø
Y--380V 3ø Z--415V 3ø X--480V 3ø N--600V 3ø
3
FOR EASE IN ORDERING BY MODEL NUMBER
H
V
X
72
250
GALLON
KILOWATT VOLTAGE VERTICAL HI-POWER
This unit is a Custom Hi-Power, Vertical, 480 Volt, Three Phase, 72 Kilowatt, 250 gallon water heater.
Standard Features
· Glass Lined Steel Tank · Incoloy Heating Elements · Internal Fusing (above 120 amps) · Enamel Finished Galvanized Steel Jacket · Magnesium Tank Saver Anodes · Immersion Thermostat · Manual Reset High Limit · Full Length Hinged Doors with Key Lock · Terminal Block Connections · ASME Temperature and Pressure Relief Valve
(Supplied but not installed)
Optional Equipment
· Channel Iron Skid Base (Except 150 & 200 gallon round) · Approved for 180°F Temperature Operation · ASME Construction and National Board Listed · All models meet or exceed ASHRAE
energy efficiency standards · 125 psi Working Pressure · Handhole/Cleanout · UL Listed (U.S. and Canada) · Safety Drain Pan (Square Models) · 3 Year Limited Tank Warranty · Control Voltage On/Off Switch w/ Pilot Light
· Low Water Cut-Off · Pilot Lights · Manual Limiting Switches · Alarm Bell · Shunt Trip Disconnect (Field Installed) · Low or High Water Pressure Switch · Lifting Lugs · Time Clock (7 day or 24 hour)
· BMS Enable/Disable Contacts · Safety Door Interlock · Temperature and Pressure Gauges · Manway (250 Gallon and Larger Only) · 150 psi or 160 psi Working Pressure · Electronic Step Controller · Seismic Attachment Points (250 Gallon and Larger Only)
(customer must provide seismic zone or city and state of install)
Standard kW Input & Amperage
kW Input
12 15 18 30 36 45 54 60 72 90 108 120 135 144 162 180 216 234 252 270 288 306 324 342 360 378 396 414 432
GPH@ 100°F Rise
49 62 74 123 148 185 221 246 295 369 443 492 554 590 664 738 886 959 1,033 1,107 1,181 1,255 1,328 1,402 1,476 1,550 1,624 1,697 1,771
Max. No. of kW
Btu/hr No. of Control Per
Equivalent Elements Steps Element
40,944
1
1
12
51,180
1
1
15
61,416
1
1
18
102,360
2
1
15
122,832
2
1
18
153,540
3
1
15
184,248
3
1
18
204,720
4
2
15
245,664
4
2
18
307,080
5
2
18
368,496
6
2
18
409,440
8
3
15
460,620
9
3
15
491,328
8
3
18
552,744
9
3
18
614,160
10
4
18
736,992
12
4
18
798,408
13
5
18
859,824
14
5
18
921,240
15
5
18
982,656
16
6
18
1,044,072
17
6
18
1,105,488
18
6
18
1,166,904
19
7
18
1,228,320
20
7
18
1,289,736
21
7
18
1,351,152
22
8
18
1,412,568
23
8
18
1,473,984
24
8
18
For KW above 432 or other voltages please consult factory
No. of Contactors 240/480V
2/1 2/1 2/1 2/1 4/2 3/2 6/2 12/6 8/4 6/3 12/4 8/4 9/6 16/8 18/6 20/10 24/8 26/13 28/14 30/10 32/16 34/17 36/12 38/19 40/20 42/14 44/22 46/23 48/16
Suggested
Modulating
Amperage Draw
Control Steps Single Phase
Three Phase
240/480V 208V 240V 208V 240V 480V
-
58
50
33
29
14
-
72
63
42
36
18
-
87
75
50
44
22
-
144
125
83
72
36
4/2
174
150
100
87
44
3/2
216
188
125 108
54
3/2
260
225
150 130
65
4/3
289
250
167 144
72
4/4
-
-
200 174
87
3/3
-
-
250 217 109
4/4
-
-
300 260 130
4/4
-
-
333 289 144
4/4
-
-
375 325 162
4/4
-
-
400 347 174
8/6
-
-
450 389 195
8/8
-
-
500 434 217
8/8
-
-
600 519 260
8/8
-
-
650 563 282
8/8
-
-
700 607 304
12/10
-
-
750 649 325
12/12
-
-
800 692 347
12/12
-
-
850 736 368
12/12
-
-
900 780 390
12/12
-
-
950 822 412
12/12
-
-
1,000 865 435
14/14
-
-
1,050 909 455
15/16
-
-
1,100 952 477
16/16
-
-
1,150 995 498
16/16
-
-
1,200 1,040 520
Lochinvar Corporation · 300 Maddox Simpson Pkwy · Lebanon, TN · 615-889-8900 / Fax: 615-547-1000
www.Lochinvar.com
CHP-10 (Replaces CHP-09 7/06)
2/08Printed in U.S.A.
Acrobat Distiller 4.0 for Macintosh