User Manual for Honeywell models including: VR8305, Direct Ignition, Combination Gas Control

69-0626, VR8305 DIRECT IGNITION COMBINATION GAS CONTROL

INSTALL

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69-0626, VR8305 DIRECT IGNITION COMBINATION GAS ...

They include a manual valve, two automatic operators, and a pressure regulator. See Table 1 for tem- perature ranges and regulator types.

Installation Instructions

VR8305P2224/U — T. F. Campbell Company

69-0626, VR8305 DIRECT IGNITION COMBINATION GAS CONTROL

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69-0626
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Honeywell

VR8305 Direct Ignition Combination Gas Control

Application
These direct ignition combination gas controls are used in gas-fired appliances with capacities up to 300 feet3/hour at 1 inch wc pressure drop [8.5 meters3/hour at 0.25 kPa] on natural gas. They include a manual valve, two automatic operators, and a pressure regulator. See Table 1 for temperature ranges and regulator types.
VR8305 set up for natural gas includes a 393691 LP Conversion Kit. The kit contains a cap screw, a pressure regulator adjustment screw, a tapered spring and a conversion label.

BODY PATTERN: Straight-through body pattern. INLET X OUTLET SIZES AVAILABLE: 1/2 x 1/2 inch,
1/2 x 3/4 inch, and 3/4 x 3/4 inch (factory-installed inlet flange). ADAPTERS: Adapters available for 1/2 and 3/4 inch straight and angle connections. Refer to Table 2. ELECTRICAL RATINGS: VOLTAGE AND FREQUENCY: 24 Vac, 60 Hz. THERMOSTAT HEAT ANTICIPATOR SETTING:
0.7A. CURRENT DRAW: 0.70A.

CAPACITY:

Size (Inlet x Outlet)
1/2 x 1/2
1/2 x 3/4
3/4 x 3/4

Capacity (at 1 inch wc pressure dropa)
240 feet3/hour [6.8 meter3/hour]
270 feet3/hour [7.6 meter3/hour]
300 feet3/hour [8.5 meter3/hour]

Minimum Regulated Capacity
30 feet3/hour [0.8 meter3/hour]
30 feet3/hour [0.8 meter3/hour]
30 feet3/hour 0.8 meter3/hour]

Maximum Regulated Capacity
340 feet3/hour [9.6 meter3/hour]
370 feet3/hour [10.5 meter3/hour]
415 feet3/hour [11.8 meter3/hour]

a Capacity based on 1000 Btu/feet3, 0.64 specific gravity natural gas at 1 inch wc pressure drop [37.3 MJ/meter3, 0.64 specific gravity natural gas at 0.25 kPa pressure drop].

Use conversion factors in Table 3 to convert capacities for other gasses.

TABLE 1--TEMPERATURE RANGES AND REGULATOR TYPES.

Model Number VR8305H
VR8305K
VR8305M
VR8305P

Ambient Temperature
Range
0° F to 175° F [-18° C to +79° C]
-40° F to 175° F [-40° C to +79° C]
-40° F to 175° F [-40° C to +79° C]
-40° F to 175° F [-40° C to +79° C]

Regulator Type
Slow-opening
Slow-opening
Standard-opening
Step-opening

APPROVALS: American Gas Association design certificate: UP-70-69A. Canadian Gas Association design certificate: UP-70-69A. Australian Gas Association design certificate: Applied for. Delta C: P-70-42A19

TABLE 2--FLANGE PART NUMBERS.

Inlet/ Outlet Pipe Size 1/2 inch NPT
3/4 inch NPT

Flange Type
Straight Elbow
Straight Elbow

Part Number

Without Hex
Wrench

With Hex Wrench

393690-6 393690-16 393690-3 393690-13

393690-4 393690-14

393690-5 393690-15

NOTE: Flange Kits include one flange with attached Oring and four mounting screws.

TABLE 3--GAS CAPACITY CONVERSION FACTORS.

Gas Manufactured Mixed Propane

Specific Gravity
0.60
0.70 1.53

Multiply Listed Capacity By
0.516
0.765 1.62

G.G. · Rev. 10-91 · © Honeywell Inc. 1991 · Form Number 69-0626--2

Installation
WHEN INSTALLING THIS PRODUCT... 1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous condition.
2. Check the ratings given in the instructions and on the product to ensure the product is suitable for your application.
3. Ensure installer is a trained, experienced service technician.
4. After installation is complete, use these instructions to check out product operation.
! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Follow these warnings exactly. 1. Disconnect power supply before wiring to
prevent electrical shock or equipment damage. 2. To avoid dangerous accumulation of fuel gas, turn off gas supply at the appliance service valve before starting installation, and perform Gas Leak Test after completion of installation. 3. Always install sediment trap in gas supply line to prevent contamination of gas control. 4. Do not force the gas control knob. Use only your hand to turn the gas control knob. Never use any tools. If the gas control knob will not operate by hand, the gas control should be replaced by a qualified service technician. Force or attempted repair may result in fire or explosion.
! CAUTION
Never apply a jumper across or short the valve coil terminals. This may burn out the heat anticipator in the thermostat or damage the electronic direct ignition (DI) module.
IMPORTANT: These gas controls are shipped with protective seals over inlet and outlet tappings. Do not remove seals until ready to connect piping.
Follow the appliance manufacturer instructions if available; otherwise, use the Instructions provided below.

CONVERTING BETWEEN NATURAL AND LP GAS
! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH 1. Do not use a gas control set for natural gas on
LP gas or a gas control set for LP gas on natural gas. 2. When making conversion, main and pilot burner orifices MUST be changed to meet appliance manufacturer specifications.
VR8305 gas controls can be converted from one gas to another. To convert from natural gas to LP, use the 393691 LP Conversion Kit that is included with the VR8305 Gas Control. To convert from LP to natural gas, use the 394588 Natural Gas Conversion Kit (order separately). Step-opening gas controls cannot be converted.
To convert control from one gas to another: 1. Turn off main gas supply to the appliance. 2. Remove the regulator cap screw and pressure regulator adjusting screw. See Fig. 1.

Fig. 1--Top view of gas control.

PRESSURE REGULATOR ADJUSTMENT (UNDER CAP SCREW)
INLET PRESSURE TAP

CONVENIENCE TERMINALS (2) (OPTIONAL)

INLET

WIRING TERMINALS (2)
OUTLET PRESSURE TAP
OUTLET

GAS CONTROL KNOB M3043A

PILOT OUTLET
PILOT ADJUSTMENT (UNDER CAP SCREW)

3. Remove the existing spring. 4. Insert the replacement spring with tapered end down. See Fig. 2. 5. Install the new plastic pressure regulator adjustment screw so that the top of the screw is flush (level) with the top of the regulator. Turn the pressure regulator adjustment screw clockwise six complete turns. This provides a preliminary pressure setting of about 10.0 in. wc [2.5 kPa] for LP regulator and 3.5 in. wc [0.9 kPa] for natural gas regulator.

2

Fig. 2--Installation of conversion kit in regulated gas control.

COLOR CODE FOR

LP GAS
CAP SCREW BLACK

NATRUAL GAS
SILVER

PRESSURE

REGULATOR ADJUSTING

WHITE

SCREW

WHITE

SPRING

RED

STAINLESS STEEL

PRESSURE REGULATOR HOUSING

Fig. 3--Install flange to gas control.

9/64 INCH HEX SCREWS (4)

GAS CONTROL OUTLET
FLANGE 1 DO NOT OVERTIGHTEN SCREWS.
TIGHTEN TO 25 INCH POUNDS.

1 M16278

M8083

6. Check the regulator setting either with a manometer or by clocking the gas meter. Refer to Startup and Checkout.
7. Install the new cap screw. 8. Mount conversion label on control. 9. Install control and appliance according to appliance manufacturer instructions.
INSTALL ADAPTERS TO GAS CONTROL Install adapters to gas control as follows:
Flanges 1. Choose the appropriate flange for your application. 2. Remove seal over gas control inlet or outlet. 3. Ensure the O-ring is fitted in the flange groove. If the
O-ring is not attached or is missing, do not use flange. 4. With O-ring facing gas control, align the screw holes
on the control with the holes in the flange. Insert and tighten the screws provided with the flange. See Fig. 3. Tighten the screws to 25 inch-pounds of torque to provide a gas-tight seal.
Bushings 1. Remove seal over gas control inlet or outlet. 2. Apply moderate amount of good quality pipe com-
pound to bushing, leaving two end threads bare. On LP installation, use compound resistant to LP gas. Do NOT use Teflon tape.
3. Insert bushing in gas control and thread pipe carefully into bushing until tight.
USING ADAPTERS TO SOLVE SWING RADIUS PROBLEMS
In some field service applications, it is difficult or impossible to thread the control onto the gas supply pipe because of space limitations. This problem can be resolved in many instances by using an adapter. The adapter in installed on the end of the supply pipe in place of the gas control, following the same precautions and instructions

that are used for installing the gas control. After the adapter is installed, the gas control is attached to the adapter as outlined above. Note that using an adapter increases the overall length of the gas control.
CHOOSE GAS CONTROL LOCATION Do not locate the gas control where it may be affected
by steam cleaning, high humidity, dripping water, corrosive chemicals, dust or grease accumulation, or excessive heat. To ensure proper operation, follow these guidelines:
· Locate gas control in a well ventilated area. · Mount gas control high enough above the cabinet
bottom to avoid exposure to flooding or splashing water. · Ensure the ambient temperature does not exceed the ambient temperature ratings for each component. · Cover gas control if appliance is cleaned with water, steam, or chemicals or to avoid dust and grease accumulation. · Avoid locating gas control where exposure is possible to corrosive chemical fumes or dripping water. Locate the gas control in the appliance vestibule on the gas manifold. In replacement applications, locate the gas control in the same location as the old gas control.
Install Piping to Gas Control All piping must comply with local codes and ordi-
nances or with the National Fuel Gas Code (ANSI Z223.1 NFPA No. 54), whichever applies. Tubing installation must comply with approved standards and practices.
1. Use new, properly reamed pipe free from chips. If tubing is used, ensure the ends are square, deburred and clean. All tubing bends must be smooth and without deformation.
2. Run pipe or tubing to the gas control. If tubing is used, obtain a tube-to-tube coupling to connect the tubing to the gas control.
3. Install sediment trap in the supply line to the gas control. See Fig. 4.

3

69-0626--2

Install Gas Control 1. This gas control can be mounted 0-90 degrees, in any
direction, including vertically, from the upright position of the gas control knob.
2. Mount the gas control so gas flow is in the direction of the arrow on the bottom of the control.

Fig. 4--Install sediment trap.

DROP HORIZONTAL

PIPED GAS SUPPLY

3 IN. (76 MM) MINIMUM

GAS CONTROL
2

DROP

HORIZONTAL

TUBING

1

GAS

SUPPLY

2

GAS CONTROL
RISER PIPED GAS SUPPLY
3 IN. (76 MM) MINIMUM

RISER 3 IN.
(76 MM) MINIMUM

GAS CONTROL
2

1 ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.

2 CAUTION: SHUT OFF THE MAIN GAS SUPPLY BEFORE REMOVING

END CAP TO PREVENT GAS FROM FILLING THE WORK AREA. TEST

FOR GAS LEAKAGE WHEN INSTALLATION IS COMPLETE.

M3077

3. Thread pipe the amount shown in Table 4 for insertion into the gas control. DO NOT THREAD PIPE TOO FAR. Valve distortion or malfunction may result if the pipe is inserted too deeply into the gas control.

TABLE 4--NPT PIPE THREAD LENGTH IN INCHES.

Maximum Depth

Pipe Can Be

Pipe

Thread Pipe

Size

This Amount

Inserted Into Control

3/8

9/16

3/8

1/2

3/4

1/2

3/4

13/16

3/4

4. Apply a moderate amount of good quality pipe compound (do not use Teflon tape) to pipe only, leaving two end threads bare. On LP installations, use compound resistant to LP gas. Refer to Fig. 5.
5. Remove seals over gas control inlet and outlet if necessary.

Fig. 5--Use moderate amount of pipe compound.

TWO IMPERFECT

THREADS

GAS CONTROL

PIPE

THREAD PIPE THE AMOUNT SHOWN IN TABLE FOR INSERTION INTO GAS CONTROL

APPLY A MODERATE AMOUNT OF PIPE COMPOUND TO PIPE ONLY (LEAVE TWO END THREADS BARE).
M3075B

Fig. 6--Proper use of wrench on gas control with and without flanges
WHEN FLANGE IS NOT USED

WHEN FLANGE IS USED

APPLY WRENCH FROM TOP OR BOTTOM OF GAS CONTROL TO EITHER SHADED AREA

APPLY WRENCH TO FLANGE ONLY
M3085A
4

6. Connect pipe to gas control inlet and outlet. Use wrench on the square ends of the gas control. If an adapter is used, place wrench on adapter rather than gas control. Refer to Figs. 1 and 6.
WIRING Follow the wiring instructions furnished by the appli-
ance manufacturer, if available, or use the general instructions provided below.
All wiring must comply with applicable electrical codes and ordinances.
Disconnect power supply before making wiring connections to prevent electrical shock or equipment damage.
1. Check the power supply rating on the valve and ensure it matches the available supply. Install transformer, thermostat, and other controls as required.
2. Connect control circuit to gas control terminals. See Figs. 1, 7 and 8.
3. Adjust thermostat heat anticipator to 0.70 rating stamped on valve operator.

Fig. 7--VR8305 Wiring Connections in S87 Direct Ignition System.

2 S87 CONTROL MODULE

24V (GND) 24V

5 ALARM VALVE VALVE
GND

4

L1 (HOT)
L2 1 ALARM, IF USED
MV MV DUAL VALVE COMBINATION GAS CONTROL

TEMPERATURE CONTROLLER
3

IGNITER-SENSOR AND BURNER GROUND
Q347 IGNITER-SENSOR

BURNER

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2 ALTERNATE LIMIT CONTROLLER LOCATION.

3 MAXIMUM IGNITER-SENSOR CABLE LENGTH: 3 ft. [.9 m] OR LESS.

4 3 A REPLACEABLE FUSE.

5 ALARM TERMINAL PROVIDED ON SOME MODELS.

M9043

Fig. 8--VR8305 Wiring Connections in S89C Direct Ignition System.

S89/S890 HOT SURFACE IGNITION CONTROL

VALVE VALVE (GND) 24V
24V (GND)

L2 HSI L1 HSI SEN
3

MV

VR8305 COMBINATION

GAS CONTROL

MV

HOT SURFACE IGNITER-SENSOR

3
Q354 FLAME SENSOR

BURNER GROUND
2 THERMOSTAT OR CONTROLLER

LIMIT CONTROLLER
L1 (HOT)
L2 1

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. MAKE SURE L1 AND L2 ARE NOT REVERSED; THIS WOULD PREVENT FLAME DETECTION.

2 ALTERNATE LIMIT CONTROLLER LOCATION.

3 SEN TERMINAL AND Q354 FLAME SENSOR ON D MODELS ONLY. M1508

5

69-0626--2

Start-Up and Checkout
! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH 1. Do not force the gas control knob. Use only
your hand to turn the gas control knob. Never use any tools. 2. If the gas control knob will not operate by hand, the gas control should be replaced by a qualified service technician.
GAS CONTROL KNOB SETTINGS The gas control knob has two settings: OFF prevents main burner gas flow. ON permits main burner gas flow. Under control of the thermostat and direct ignition module, gas can flow to the main burner.
NOTE: Controls are shipped with the gas control knob in the ON position.
PERFORM GAS LEAK TEST
! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Check for gas leaks with rich soap and water solution anytime work is done on a gas control.
GAS LEAK TEST 1. Paint all pipe connections upstream of the gas con-
trol with a rich soap and water solution. Bubbles indicate a gas leak.
2. If a gas leak is detected, tighten the pipe connection. 3. Stand clear while lighting main burner to prevent injury caused from hidden gas leaks that could cause flashback in the appliance vestibule. Light the main burner. 4. With the main burner in operation, paint all pipe joints (including adapters) and gas control inlet and outlet with rich soap and water solution. 5. If another gas leak is detected, tighten adapter screws, joints, and pipe connections. 6. Replace the part if gas leak cannot be stopped.
TURN ON SYSTEM Rotate the gas control knob counterclockwise to
ON.
TURN ON MAIN BURNER Follow instructions provided by appliance manufac-
turer or turn thermostat up to call for heat.

CHECK AND ADJUST GAS INPUT TO MAIN BURNER
! CAUTION
1. Do not exceed the input rating stamped on the appliance nameplate, or manufacturer recommended burner orifice pressure for the size orifice(s) used. Ensure the main burner primary air supply is properly adjusted for complete combustion (refer to the appliance manufacturer instructions).
2. IF CHECKING GAS INPUT BY CLOCKING THE GAS METER: · Ensure that the only gas flow through the meter is that of the appliance being tested. · Ensure that other appliances are turned off and that their pilot burners are extinguished (or deduct their gas consumptions from the meter reading). · Convert the flow rate to Btuh as described in the Gas Controls Handbook (form 702602) and compare to the Btuh input rating on the appliance nameplate.
3. IF CHECKING GAS INPUT WITH A MANOMETER (PRESSURE GAUGE): · Ensure the gas control knob is in the PILOT position before removing the outlet pressure tap plug to connect the manometer. · Turn the gas control knob back to PILOT when removing the manometer and replacing outlet pressure tap plug. · Shut off the gas supply at the appliance service valve, or for LP gas at the gas tank, before removing the outlet pressure tap plug and before disconnecting the manometer to replace the outlet pressure tap plug. · Perform the Gas Leak Test at the inlet pressure tap plug.

Standard-Opening and Slow-Opening Pressure

Regulator

1. The gas control outlet pressure should match the

manifold pressure listed on the appliance nameplate.

2. With the main burner operating, check the gas con-

trol flow rate using the meter clocking method or check the

gas pressure using a manometer connected to the gas

control outlet pressure tap. Refer to Fig. 1.

3. If necessary, adjust the pressure regulator to match

the appliance rating. Refer to Table 5 or 6 for the factory set

nominal outlet pressures and adjustment ranges.

a. Remove the pressure regulator adjustment cap and

screw.

b. Using a screwdriver, turn the inner adjustment screw

clockwise

to increase or counter-

clockwise to decrease the main burner gas pres-

sure.

6

TABLE 5--PRESSURE REGULATOR SPECIFICATION PRESSURES IN INCHES WC.

Model
Standard-, Slow-opening
Stepopening

Type of Gas
Natural LP
Natural LP

Nominal Inlet
Pressure Range
5.0 - 7.0 12.0 - 14.0
5.0 - 7.0 12.0 - 14.0

Outlet Pressure

Nominal Factory Setting

Setting Range

Full

Step

Rate

Step

Full Rate

--

3.5

--

3.0 - 5.0

--

10.0

--

8.0 - 12.0

0.9

3.5

--

2.2

10.0

--

3.0 - 5.0 8.0 - 12.0

TABLE 6--PRESSURE REGULATOR SPECIFICATION PRESSURES IN kPa.

Model
Standard-, Slow-opening
Stepopening

Type of Gas
Natural LP
Natural LP

Nominal Inlet
Pressure Range
1.2 - 1.7 2.9 - 3.9
1.2 - 1.7 2.9 - 3.9

Outlet Pressure

Nominal Factory Setting

Setting Range

Full

Step

Rate

Step

Full Rate

--

0.9

--

0.7 - 1.2

--

2.7

--

2.0 - 3.0

0.2

0.9

--

0.9

2.7

--

0.7 - 1.2 2.0 - 3.0

c. Always replace the cap screw and tighten firmly to ensure proper operation.
4. If the desired outlet gas pressure or gas flow rate cannot be achieved by adjusting the gas control, check the gas control inlet pressure using a manometer at the inlet pressure tap. If the inlet pressure is in the normal range (refer to Table 5 or 6), replace the gas control. Otherwise, take the necessary steps to provide proper gas pressure to the gas control.

Step-Opening Pressure Regulator

1. The gas control outlet pressure should match the

manifold pressure listed on the appliance nameplate.

2. With the main burner operating, check the gas con-

trol flow rate using the meter clocking method or check the

gas pressure using a manometer connected to the gas

control outlet pressure tap. Refer to Fig. 1.

3. If necessary, adjust the pressure regulator to match

the appliance rating. Refer to Table 5 or 6 for factory set

nominal outlet pressures and adjustment ranges.

a. Remove the pressure regulator adjustment cap screw.

b. Using a screwdriver, turn the inner adjustment screw

clockwise

to increase or counter-

clockwise to decrease the main burner gas pres-

sure.

c. Always replace the cap screw and tighten firmly to

ensure proper operation.

4. If desired outlet pressure or flow rate cannot be

achieved by adjusting the gas control, check the inlet

pressure using a manometer at inlet pressure tap or up-

stream of the gas control. If the inlet pressure is in the

normal range (refer to Table 5 or 6), replace the existing gas

control. Otherwise, take the necessary steps to provide

proper gas pressure to the gas control.

5. Carefully check main burner lightoff at the step

pressure. Ensure the main burner lights smoothly and

without flashback to the orifice and that all ports remain lit.

Cycle the main burner several times, allowing at least 30 seconds between cycles for the regulator to resume the step function. Repeat after allowing main burner to cool. Readjust the full rate outlet pressure, if necessary, to improve lightoff characteristics.
CHECK SAFETY SHUTDOWN PERFORMANCE
! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Perform the safety shutdown test any time work is done on a gas system.
NOTE: Read steps 1-7 below before starting and compare to the safety shutdown or safety lockout tests recommended for the direct ignition (DI) module. Where they differ, use the procedure recommended for the module.
1. Turn gas supply off. 2. Set thermostat or controller above room temperature to call for heat. 3. Watch for ignition spark or for glow at hot surface igniter either immediately or following prepurge. See DI module specifications. 4. Time length of igniter operation. See DI module specifications. 5. After the module locks out, open gas control and ensure there is no gas flow to main burner. 6. Set thermostat below room temperature and wait one minute. 7. Operate system through one complete cycle to ensure all controls operate properly.

7

69-0626--2

Maintenance

Service

! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Improper cleaning or reassembly may cause gas leakage. When cleaning, ensure that control is reassembled properly and perform gas leak test.
Regular preventive maintenance is important in applications that place a heavy load on system controls, such as in the commercial cooking and agricultural and industrial industries because:
· The equipment operates 100,000-200,000 cycles per year in many such applications, particularly commercial cooking. Such heavy cycling can wear out the gas control in one to two years.
· Exposure to water, dirt, chemicals and heat can damage the gas control and shut down the control system.
The maintenance program should include regular checkout of the gas control, see Start-Up and Checkout, page 6, and the control system as described in the appliance manufacturer's literature.
Maintenance frequency must be determined individually for each application. Some considerations are:
· Cycling frequency. Appliances that may cycle 100,000 times annually should be checked monthly.
· Intermittent use. Appliances that are used seasonally should be checked before shutdown and again before the next use.
· Consequence of unexpected shutdown. Where the cost of an unexpected shutdown would be high, the system should be checked more often.
· Dusty, wet, or corrosive environment. Since these environments can cause the gas control to deteriorate more rapidly, the system should be checked more often.
The gas control should be replaced if: · It does not perform properly on checkout or trouble-
shooting. · The gas control knob is hard to turn or push down, or
it fails to pop back up when released. · The gas control is likely to have operated for more
than 200,000 cycles.

! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE, INJURY, OR DEATH Do not disassemble the gas control; it contains no replaceable components. Attempted disassembly or repair may damage the gas control.
! CAUTION
Do not apply a jumper across or short the valve coil terminals. Doing so may burn out the heat anticipator in the thermostat or damage the DI module.
IMPORTANT: Allow 60 seconds after shutdown before re-energizing step-opening model to ensure lightoff at step pressure.
IF MAIN BURNER WILL NOT COME ON WITH CALL FOR HEAT
1. Ensure gas control knob is in the ON position. 2. Adjust thermostat several degrees above room temperature. 3. Using ac voltmeter, measure voltage across MV terminals at gas control. 4. If no voltage is present, check control circuit for proper operation. 5. If proper control system voltage is present, replace gas control.

8

INSTRUCTIONS TO THE HOMEOWNER FOR YOUR SAFETY, READ BEFORE OPERATING
! WARNING
FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH Follow these warnings exactly: 1. Pilot flame is lit automatically. Do not light the
pilot flame manually. 2. Before lighting pilot burner flame, smell around
the appliance for gas. Be sure to smell next to floor because LP gas is heavier than air. 3. IF YOU SMELL GAS: · Turn off the gas supply at the appliance
service valve. On LP gas systems, turn off gas supply at the gas tank. · Do not light any appliances in the house. · Do not touch electrical switches or use the phone. · Leave the building and use a neighbor's phone to call your gas supplier. · If you cannot reach your gas supplier, call the fire department. 4. Do not force the gas control knob. Use only your hand to push down or turn the gas control knob. Never use any tools. If the gas control knob will not operate by hand, the gas control should be replaced by a qualified service technician. Force or attempted repair may result in a fire or explosion. 5. The gas control must be replaced in case of any physical damage, tampering, bent terminals, missing or broken parts, stripped threads, or evidence of exposure to heat.

IMPORTANT: Follow the operating instructions provided by the manufacturer of your heating appliance. The information below will be of assistance in a typical control application, but the specific controls used and the procedures outlined by the manufacturer of your appliance may differ, requiring special instructions.
STOP: READ THE WARNINGS ABOVE. The pilot flame is lit automatically. If the appliance does
not turn on when the thermostat is set several degrees above room temperature, follow these instructions.
1. Set the thermostat to its lowest setting to reset the safety control.
2. Disconnect all electric power to the appliance. 3. Remove the gas control access panel. 4. Push in the gas control knob slightly and turn clockwise to OFF. 5. Wait five minutes to clear out any unburned gas. If you then smell gas, STOP! Follow step 3 in the WARNING above. If you do not smell gas, continue with the next step. 6. Turn the gas control knob counterclockwise to ON. 7. Replace the gas control access panel. 8. Reconnect all electric power to the appliance. 9. Set the thermostat to the desired setting. 10. If the appliance does not turn on, set the gas control knob to OFF and contact a qualified service technician for assistance.
TURNING OFF THE APPLIANCE VACATION SHUTDOWN--Set the thermostat to the
desired room temperature while you are away. COMPLETE SHUTDOWN--Push the gas control knob
in slightly and turn clockwise to OFF. Do not force. Appliance will completely shut off. Follow the lighting procedures above to resume normal operation.

9

69-0626--2

10

11

69-0626--2

Residential and Building Controls Division Honeywell Inc. 1985 Douglas Drive North Golden Valley, Minnesota 55422

Residential and Building Controls Division Honeywell Limited--Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9

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