Honeywell Carbon Monoxide Alarm VR8300A User Manual

VR8300A Continuous Pilot Combination  
Gas Control  
INSTALLATION INSTRUCTIONS  
Body Pattern:  
Straight-through body pattern.  
APPLICATION  
These continuous pilot gas controls are used in gas-fired  
appliances with capacities up to 200 cfh at 1 in. wc  
pressure drop (5.7 cmh at 0.25 kPa) on natural gas.  
Included are a manual valve, safety shutoff, two automatic  
operators, and a pressure regulator. See Table 2 for  
temperature range and regulator type.  
Inlet x Outlet Sizes Available:  
1/2 x 1/2 in., 1/2 x 3/4 in., and 3/4 x 3/4 in. (factory-installed  
inlet flange).  
Adapters:  
Adapters available for 1/2 and 3/4 in. straight and angle  
connections. Refer to Table 3.  
The VR8300 setup for natural gas includes a 39369 LP  
Conversion Kit. The kit contains a new cap screw, a  
pressure regulator adjustment screw, a tapered spring and  
a conversion label. The control must be equipped with a  
standard servo pressure regulator. Step-opening gas  
controls cannot be converted.  
Electrical Ratings:  
Voltage and Frequency: 24 Vac, 50/60 Hz.  
Current Draw: 0.70A.  
Capacity:  
Capacity at 1 in. wc  
a
Minimum Regulated  
Capacity  
Maximum Regulated  
Capacity  
Size (Inlet x Outlet)  
1/2 in. x 1/2 in.  
1/2 in. x 3/4 in.  
3/4 in. x 3/4 in.  
Pressure Drop  
180 cfh (5.1 cmh)  
190 cfh (5.4 cmh)  
200 cfh (5.7 cmh)  
30 cfh (0.8 cmh)  
30 cfh 0.8 cmh)  
30 cfh (0.8 cmh)  
225 cfh (6.4 cmh)  
290 cfh (8.2 cmh)  
300 cfh (8.5 cmh)  
a
Capacity based on 1000 Btu/cu ft, 0.64 specific gravity natural gas at 1 in. wc pressure drop (37.3 MJ/cu m, 0.64 specific  
gravity natural gas at 0.25 kPa pressure drop).  
Table 3. Flange Part Numbers.  
Part Number  
Use conversion factors in Table 1 to convert capacities for  
other gases.  
Inlet/Outlet  
Pipe Size  
Flange  
Type  
Without Hex  
With Hex  
Wrench  
Table 1. Gas Capacity Conversion Factors.  
Wrench  
393690-6  
393690-3  
393690-4  
393690-5  
Specific  
Gravity  
Multiply Listed  
Capacity By  
1/2 in. NPT  
Straight  
Elbow  
393690-16  
393690-13  
393690-14  
393690-15  
Gas  
Manufactured  
Mixed  
0.60  
0.70  
1.53  
0.516  
0.765  
1.62  
3/4 in. NPT  
Straight  
Elbow  
Propane  
Table 2. Temperature Range and Regulator Type.  
NOTE: Flange kits include one flange with attached  
O-ring and fan mounting screw.  
Ambient  
Temperature Range  
Model  
Number  
Regulator  
Type  
Approvals:  
°F °C  
International Approval Services Listed: L2025007.  
Australian Gas Association Certificate: Applied for.  
Delta C: Pending approval.  
VR8300A 0° to 175° 18° to 79° Standard-opening  
®U.S. Registered Trademark  
69-0668-1  
Copyright © 1998 Honeywell Inc. • All Rights Reserved  
 
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
COLOR CODE FOR  
NATRUAL  
GAS  
LP  
GAS  
CAP SCREW BLACK  
SILVER  
PRESSURE  
REGULATOR  
WHITE  
WHITE  
ADJUSTING  
SCREW  
TAPERED  
SPRING  
STAINLESS  
STEEL  
RED  
GAS CONTROL  
INLET  
FLANGE  
PRESSURE  
REGULATOR  
HOUSING  
1
9/64 IN. (3.6 MM)  
HEX SCREWS (4)  
1
DO NOT OVERTIGHTEN SCREWS.  
TIGHTEN TO 25 IN. LB.  
M803  
Fig. 2. Install flange to gas control.  
M16015  
Choose Gas Control Location  
Fig. 1. Install conversion kit in regulated gas control.  
Do not locate the gas control where it can 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:  
Bushings:  
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.  
1. Remove the seal over the gas control inlet or outlet.  
IMPORTANT  
On LP installations, use a compound resistant to  
LP gas. Do not use Teflon tape.  
Make sure 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 to corrosive  
chemical fumes or dripping water is likely.  
2. Apply moderate amount of good quality pipe  
compound to bushing, leaving two end threads bare.  
3. Insert bushing in gas control and thread pipe  
carefully into bushing until tight.  
Follow the instructions below for piping, installing control,  
connecting pilot tubing, thermocouple and wiring. Make  
certain the leak test you perform on the control after  
completing the installation includes leak testing the  
adapters and screws. If you use a wrench on the valve  
after flanges are installed, use the wrench only on the  
flange, not the control.  
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 ordinances 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, make sure 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-pipe coupling to connect the  
tubing to the gas control.  
3. Install sediment trap in the supply line to the gas  
control. See Fig. 3.  
Use Adapters to Solve Swing  
Radius Problems  
In some field service applications, it is difficult or impos-  
sible to thread the gas control onto the gas supply pipe  
because of space limitations. This problem can usually be  
resolved by using an adapter. The adapter is 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.  
 
69-0668—1  
3
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
IMPORTANT  
Install Gas Control  
On LP installations, use compound resistant to  
LP gas. Do not use Teflon tape.  
To install:  
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.  
5. Remove seals over the gas control inlet and outlet if  
necessary.  
6. Connect the pipe to the gas control inlet and outlet.  
Use a wrench on the square ends of the gas control.  
If an adapter is used, place the wrench on the  
adapter rather than the gas control. Refer to Fig. 5  
and 6.  
1. Mount the gas control 0 to 90 degrees, in any  
direction, from the upright position of the gas control  
knob, including vertically.  
2. Mount the gas control so the gas flow is in the  
direction of the arrow on the bottom of the gas  
control.  
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 can result if the  
pipe is inserted too deeply into the gas control. See  
Fig. 3.  
PRESSURE REGULATOR  
ADJUSTMENT  
(UNDER CAP SCREW)  
CONVENIENCE  
TERMINALS (2)  
(OPTIONAL)  
DROP  
WIRING  
TERMINALS (2)  
PIPED  
GAS  
GAS  
CONTROL  
HORIZONTAL  
OUTLET  
PRESSURE  
TAP  
SUPPLY  
OUTLET  
PRESSURE  
TAP  
RISER  
GAS  
CONTROL  
OUTLET  
INLET  
PIPED  
GAS  
3 IN.  
(76 MM)  
MINIMUM  
SUPPLY  
PILOT OUTLET  
PILOT ADJUSTMENT  
(UNDER CAP SCREW)  
THERMOCOUPLE  
CONNECTION  
2
GAS  
CONTROL  
KNOB  
M16013  
DROP  
RED RESET BUTTON  
HORIZONTAL  
3 IN.  
(76 MM)  
MINIMUM  
Fig. 5. Top view of gas control.  
TUBING  
GAS  
SUPPLY  
1
2
GAS  
CONTROL  
RISER  
3 IN.  
(76 MM)  
MINIMUM  
2
ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.  
1
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  
APPLY WRENCH  
TO FLANGE ONLY  
Fig. 3. Sediment trap installation.  
TWO IMPERFECT  
GAS CONTROL  
THREADS  
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  
M16012  
Fig. 4. Use moderate amount of pipe compound.  
Fig. 6. Proper use of wrench on gas control.  
Connect Pilot Gas Tubing  
Table 4. NPT Pipe Thread Length in in.  
Pipe  
Size  
Thread Pipe  
this Amount  
Maximum Depth Pipe can  
be Inserted into Control  
3/8 in.  
1/2 in.  
3/4 in.  
9/16 in.  
3/4 in.  
3/8 in.  
1/2 in.  
3/4 in.  
1. Cut tubing to desired length and bend as necessary  
for routing to pilot burner. Do not make sharp bends  
or deform the tubing. Do not bend tubing at gas  
control or pilot burner after compression fitting is  
tightened, because this can result in gas leakage at  
the connection.  
13/16 in.  
69-0668—1  
 
4
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
2. Square off and remove the burrs from the end of the  
tubing.  
3. Unscrew the compression fitting from the pilot outlet  
(Fig. 5). Slip the compression fitting over the tubing  
and slide out of the way.  
3. For attachment nut type pilot burners: From  
beneath, insert the tip of the Q340 into the hole or  
barrel in the pilot burner. Engage the threads of the  
attachment nut and tighten securely.  
Connect Thermocouple  
NOTE: When replacing a gas control, cut off the  
old compression fitting and replace with the  
new compression fitting provided on the  
gas control. Never use the old compres-  
sion fitting as it may not provide a gas-tight  
seal.  
If a supplementary limit or energy cutoff (ECO) is used,  
insert the ECO connector (order part no. 394332 as shown  
in Fig. 8) and then connect the thermocouple lead.  
Otherwise, insert the thermocouple lead directly.  
This is an electrical connection and must be clean and dry.  
Never use pipe compound. Tighten only 1/4 turn beyond  
finger-tight to give good electrical continuity. Do not  
overtighten.  
4. Push tubing into the pilot gas tapping on the outlet  
end of the control until it bottoms. While holding the  
tubing all the way in, slide the compression fitting  
into place and engage threads—turn until finger-  
tight. Then tighten one more turn with wrench. Do  
not overtighten. Refer to Fig. 7.  
Wiring  
GAS CONTROL  
TIGHTEN NUT ONE TURN  
BEYOND FINGER TIGHT.  
CAUTION  
TO PILOT  
BURNER  
Hazardous Voltage.  
Can cause personal injury or equipment  
damage.  
Disconnect power supply before installing or  
servicing.  
FITTING BREAKS OFF AND CLINCHES  
TUBING AS NUT IS TIGHTENED.  
M3076A  
Fig. 7. Always use new compression fitting.  
All wiring must comply with applicable electrical codes and  
ordinances.  
24V  
THERMOSTAT  
5. Connect other end of tubing to pilot burner according  
HIGH LIMIT  
CONTROLLER  
to pilot burner manufacturer instructions.  
4
L1  
(HOT)  
Install Thermocouple  
L2  
1
OPTIONAL  
CONVENIENCE  
TERMINALS  
TH/TR  
The Q340A Thermocouple (with adapters) is provided with  
SUPER TRADELINE® models of the VR8300A. Install the  
Q340A as follows:  
1. Determine if the pilot burner requires a thermo-  
couple with a push-in clip or attachment nut, and  
attach the correct adapter to the Q340.  
2. For push-in clip type pilot burners, from beneath,  
insert the tip of the Q340 into the hole or barrel of  
the pilot burner. Push in firmly to lock in place.  
3
TH  
TR  
GAS CONTROL  
TERMINALS  
2
1
2
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
DO NOT JUMPER THESE TERMINALS. THIS SHORTS VALVE COIL  
AND CAN BURN OUT ANTICIPATOR IN THERMOSTAT.  
CONVENIENCE TERMINALS SERVE ONLY AS A TIE POINT.  
THEY ARE NOT INTERNALLY WIRED TO THE CONTROL CIRCUIT  
OR TO GROUND.  
THERMOCOUPLE  
LEAD  
M2915  
4
OPTIONAL HIGH LIMIT.  
Fig. 9. Wiring connections for 24V control.  
1
Refer to the appliance manufacturer instructions if  
available, or use the following procedure.  
1. Check the power supply rating on the gas control  
and make sure it matches the available supply.  
Install the transformer, thermostat, and other  
controls as required.  
2. Connect the control circuit to the gas control  
terminals. See Fig. 5 and 9.  
3. Adjust the thermostat heat anticipator to the 0.70  
rating stamped on valve operator.  
ECO  
CONNECTOR  
1
THIS IS AN ELECTRICAL CONECTION AND MUST BE  
CLEAN AND DRY. DO NOT USE PIPE COMPOUND.  
M3095  
Fig. 8. Install thermocouple, optional ECO connector  
to power unit.  
 
69-0668—1  
5
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
Table 5. Maximum Length of Supplementary Limit Leadwires in in. (m) When Using Q340A Thermocouple.  
Maximum Leadwire Length x 2 (Wires)  
Thermocouple Length  
AWG No. 14  
in.  
AWG No. 16  
in.  
AWG No. 18  
in.  
13  
in.  
18  
24  
30  
36  
48  
60  
m
m
m
m
0.5  
0.6  
0.8  
0.9  
1.2  
1.5  
35  
29  
23  
17  
0.9  
0.7  
0.6  
0.4  
22  
18  
15  
11  
0.6  
0.5  
0.4  
0.3  
0.3  
0.3  
0.2  
0.2  
11  
9
6
DO NOT USE.  
Table 6. Maximum Length of Supplementary Limit Leadwires in in. (m) When Using Q390/Q340 Thermocouple.  
Maximum Leadwire Length x 2 (Wires)  
Thermocouple Length  
AWG No. 14  
in.  
AWG No. 16  
in.  
30  
AWG No. 18  
in.  
18  
in.  
12  
18  
24  
30  
36  
40  
48  
60  
m
m
m
m
0.3  
0.5  
0.6  
0.8  
0.9  
1.0  
1.2  
1.5  
47  
41  
35  
29  
23  
19  
11  
1.2  
1.0  
0.9  
0.8  
0.6  
0.5  
0.3  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.5  
0.4  
0.4  
0.3  
0.2  
0.2  
26  
22  
18  
15  
12  
7
16  
14  
11  
9
7
DO NOT USE.  
Perform Gas Leak Test  
START-UP AND CHECKOUT  
WARNING  
Can cause property damage, severe injury,  
or death  
Check for gas leaks with rich soap and water  
solution any time work is done on a gas control.  
WARNING  
Can cause property damage, severe injury,  
or death.  
1. Do not force the gas control knob. Use only  
your hand to push down the reset button or  
turn the gas control knob. Never use any  
tools.  
2. If the gas control knob or reset button does  
not operate by hand, or if the reset button  
stays depressed after it is released, the gas  
control should be replaced by a qualified  
service technician.  
Fire or Explosion Hazard.  
Fire or Explosion Hazard.  
Gas Leak Test  
1. Paint the pipe connections upstream of the gas  
control with a rich soap and water solution. Bubbles  
indicate a gas leak.  
2. If a leak is detected, tighten the pipe connection.  
3. Stand clear while lighting the 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 pipe joints  
(including adapters) and gas control inlet and outlet  
with rich soap and water solution.  
5. If another leak is detected, tighten the adapter  
screws, joints, and pipe connections.  
Gas Control Knob Settings  
The gas control knob has three settings:  
OFF: prevents pilot and main burner gas flow.  
PILOT: permits pilot gas flow only. Gas control knob  
must be held depressed or thermocouple must be  
heated sufficiently to hold the safety control valve  
open.  
6. Replace the part if gas leak cannot be stopped.  
ON: permits main burner and pilot gas flow. Thermostat  
and gas control the main burner gas flow.  
NOTE: Gas controls are shipped with the gas control  
knob in the ON position.  
69-0668—1  
 
6
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
Light Pilot Burner Flame  
Check and Adjust Gas Input to Main Burner  
1. Turn the gas control knob clockwise  
to OFF.  
Wait five minutes to dissipate any unburned gas.  
Sniff around the appliance near the floor. Do not  
relight the pilot flame if you smell gas.  
2. Turn the gas control knob counterclockwise  
to PILOT. Push down and hold the gas control knob  
while lighting the pilot flame.  
CAUTION  
1. Do not exceed the input rating stamped on the  
appliance nameplate, or the manufacturer  
recommended burner orifice pressure for the  
size orifice(s) used. Make sure the main  
burner primary air supply is properly adjusted  
for complete combustion Follow the instruc-  
tions of the appliance manufacturer.  
2. IF CHECKING GAS INPUT BY CLOCKING  
THE GAS METER:  
3. Hold the gas control knob down about one minute,  
then release.  
a. If the pilot flame goes out, turn the gas control  
knob clockwise  
1 through 3.  
to OFF and repeat steps  
Be sure there is no gas flow through the  
meter other than that of the appliance  
being tested.  
Other appliances must remain off with  
pilots extinguished (or the consumptions  
must be deducted from the meter reading).  
Convert the flow rate to Btuh as described  
in the Gas Controls Handbook, form 70-  
2602, and compare to the Btuh input rating  
on the appliance nameplate.  
b. If pilot flame remains lit, turn the gas control  
knob counterclockwise  
to ON.  
Adjust Pilot Burner Flame  
The pilot flame should envelop 3/8 to 1/2 in. (10 to 13 mm)  
of the thermocouple tip. See Fig. 10.  
To adjust the pilot flame:  
1. Remove the pilot adjustment cover screw.  
See Fig. 5.  
2. Turn the inner adjustment screw clockwise  
to decrease or counterclockwise  
the pilot flame.  
3. IF CHECKING GAS INPUT WITH A MANOM-  
ETER (PRESSURE GAUGE):  
Make sure the gas control knob is in the  
PILOT position before removing the outlet  
pressure tap plug to connect the manom-  
eter.  
to increase  
3. Always replace the cover screw after adjustment  
and tighten firmly to ensure proper operation.  
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 and replacing the outlet  
pressure tap plug.  
Light Main Burner  
Follow the appliance manufacturer instructions or set the  
thermostat setpoint 10°F (6°C) above the room tempera-  
ture to call for heat.  
PROPER FLAME  
ADJUSTMENT  
3/8 TO 1/2 IN.  
(10 TO 13 MM)  
Perform the Gas Leak Test at the inlet  
pressure tap plug.  
Standard-Opening and Slow-Opening Pressure  
Regulator  
THERMOCOUPLE  
1. The gas control outlet pressure should match the  
manifold pressure listed on the appliance name-  
plate.  
M3086B  
Fig. 10. Proper flame adjustment.  
2. With the main burner operating, check the gas  
control flow rate using the meter clocking method or  
check the gas pressure using a manometer con-  
nected to the gas control outlet pressure tap. See  
Fig. 5.  
3. If necessary, adjust the pressure regulator to match  
the appliance rating. Refer to Table 7 or 8 for the  
factory-set nominal outlet pressures and adjustment  
ranges.  
a. Remove the pressure regulator adjustment  
cap and screw.  
b. Use a screwdriver to turn the inner adjustment  
screw clockwise  
counterclockwise  
burner gas pressure.  
to increase or  
to decrease the main  
c. Always replace the cap screw and tighten  
firmly to ensure proper operation.  
 
69-0668—1  
7
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
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 7 or  
8), replace the gas control. Otherwise, take the  
necessary steps to provide proper gas pressure to  
the gas control.  
Regular preventive maintenance is important in applica-  
tions that place a heavy load on system controls such as in  
the commercial cooking and agricultural and industrial  
industries because:  
In many such applications, particularly commercial  
cooking, the equipment operates 100,000-200,000  
cycles per year. 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.  
Check Safety Shutdown Performance  
The maintenance program should include regular check-  
out of the gas control as outlined in the Startup and  
Checkout section, and the control system as described in  
the appliance manufacturer literature.  
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.  
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  
unexpected shutdown is costly, the system should be  
checked more often.  
1. Place the gas control knob in the PILOT position.  
Main burner should go off and pilot should remain lit.  
2. Extinguish the pilot flame. Pilot gas flow should stop  
within 2-1/2 minutes. Safety shutoff of pilot gas  
proves complete shutdown since safety shutoff  
valve prevents main burner and pilot gas flow.  
3. Relight pilot burner and operate system through one  
complete cycle to ensure all controls operate  
properly.  
Dusty, wet, or corrosive environment. In these environ-  
ments the gas control can deteriorate more rapidly so  
the system should be checked more often.  
The gas control should be replaced if:  
MAINTENANCE  
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 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.  
Improper cleaning or reassembly can cause gas  
leakage. When cleaning, ensure that control is  
reassembled properly and perform gas leak test.  
Table 7. Pressure Regulator Specification Pressures in in. wc.  
Outlet Pressure  
Nominal Factory Setting Setting Range  
Nominal  
Inlet Pressure Range  
Model  
Type of Gas  
Natural  
LP  
Step  
Full Rate  
3.5  
Step  
Full Rate  
3.0 - 5.0  
Standard-opening  
5.0 - 7.0  
12.0 - 14.0  
11.0  
8.0 - 12.0  
Table 8. Pressure Regulator Specification Pressures in Kpa.  
Outlet Pressure  
Nominal Factory Setting Setting Range  
Nominal  
Inlet Pressure Range  
Model  
Type of Gas  
Natural  
LP  
Step  
Full Rate  
0.9  
Step  
Full Rate  
0.7 - 1.2  
2.0 - 3.0  
Standard-opening  
1.2 - 1.7  
2.9 - 3.9  
2.7  
69-0668—1  
 
8
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
If Main Burner does not Come on with Call  
For Heat:  
SERVICE  
WARNING  
Can cause property damage, severe injury or  
death  
Do not disassemble the gas control; it contains no  
replaceable components. Attempted disassembly  
or repair can damage the gas control.  
1. Make sure the gas control knob is in the ON  
position.  
2. Adjust the thermostat several degrees above the  
room temperature.  
3. Use an ac voltmeter to measure the voltage across  
terminals TH and TR. If:  
Fire or Explosion Hazard.  
a. No voltage is present, check the control circuit  
for proper operation.  
b. 24 Vac is present, but first operator did not  
click open, check for excessive inlet gas  
pressure. If inlet gas pressure is correct,  
replace the gas control.  
CAUTION  
Improper installation can burn out thermostat  
heat anticipator.  
Do not apply a jumper across or short the valve  
coil terminals.  
Hazardous voltage.  
4. Measure the open and closed thermocouple output  
voltages and compare to the acceptable range  
charts in the thermocouple specifications or in the  
Gas Controls Handbook. Replace the thermocouple  
if voltages are outside the acceptable range.  
IMPORTANT  
Allow 60 seconds after shutdown before re-  
energizing step-opening model to ensure lightoff  
at step pressure.  
If Main Burner is Overfiring:  
Adjust the gas control pressure regulator to the correct  
pressure. If the regulator cannot be adjusted and supply  
pressure is in the normal range, replace the gas control.  
If Pilot Burner Flame does not Light:  
1. Make sure that the main gas supply valve is open  
and the pilot gas supply line is purged of air.  
2. Light the pilot burner flame following procedures in  
Light the Pilot Burner Flame section. If pilot burner  
flame does not light:  
Instructions to the Homeowner  
a. Check the pilot gas adjustment screw. If  
closed, readjust the pilot flame. Refer to  
Adjust the Pilot Burner Flame section.  
b. Perform the Gas Leak Test at the compres-  
sion fitting. If a gas leak is detected, replace  
the old compression fitting or tighten the newly  
installed one. See Fig. 5.  
WARNING  
Can cause property damage, severe injury,  
or death.  
Follow these warnings exactly:  
1. Pilot burner flame must be lit manually. Follow  
these instructions exactly.  
Fire or Explosion Hazard.  
c. Make sure that the pilot burner tubing or pilot  
burner orifice is not clogged.  
2. Before lighting pilot burner flame, smell  
around the appliance area for gas. Be sure to  
smell next to floor because LP gas is heavier  
than air.  
If Pilot Burner Flame Goes Out when Gas  
Control Knob is Released:  
3. IF YOU SMELL GAS:  
Immediately turn off the gas supply at the  
appliance service valve. On LP gas  
systems, turn off the gas supply at the gas  
tank.  
1. Make sure the gas control knob is held in at least  
one minute to allow the thermocouple time to heat.  
2. Check the pilot burner flame adjustment. Refer to  
Adjust the Pilot Burner Flame section.  
3. Check the wiring between the thermocouple and the  
gas control valve operator.  
4. Make sure that the thermocouple connection to the  
power unit is tightened 1/4 turn beyond finger tight.  
5. If pilot burner flame goes out, measure the open and  
closed thermocouple output voltage. Compare it to  
the acceptable range charts in the thermocouple  
specifications or in the Gas Controls Handbook.  
Replace the thermocouple if voltages are outside  
the acceptable range.  
Do not light any appliances in the house.  
Do not touch electrical switches or use the  
phone.  
Leave the building and call your gas  
supplier.  
If you can not reach your gas supplier, call  
the fire department.  
4. Do not force the gas control knob on the  
appliance. Use only your hand to turn the gas  
control knob. Never use any tools. If the gas  
control knob does not operate by hand, have  
a qualified service technician replace the  
control. Force or attempted repair can result in  
a fire or explosion.  
6. Check the power unit resistance. If it is above 11  
ohms, replace the gas control.  
5. The gas control is a safety device, it must be  
replaced in case of any physical damage such  
as bent terminals, missing or broken parts,  
stripped threads, or evidence of exposure to  
heat.  
 
69-0668—1  
9
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
IMPORTANT  
Follow the operating instructions provided by the  
8. Turn the gas control knob counterclockwise  
to PILOT.  
manufacturer of your heating appliance. The  
information below is for a typical gas control  
application, but the specific controls used and the  
procedures outlined by the manufacturer or your  
appliance may differ, requiring special instruc-  
tions.  
9. Push and hold the gas control knob all the way in.  
Immediately light the pilot burner flame with a match  
and continue holding in the gas control knob for one  
minute after the pilot burner flame is lit.  
10. Release the gas control knob until it pops back up.  
The pilot burner flame should remain lit. If pilot  
burner flame goes out, repeat steps 1 through 10.  
a. If the gas control knob does not pop up when  
released, stop immediately and call your  
service technician or gas supplier.  
Lighting the Pilot Burner Flame  
STOP: READ THE WARNING ABOVE.  
b. If the pilot flame does not stay lit after several  
attempts, turn the gas control knob to OFF  
and call your service technician or gas  
supplier.  
The pilot burner flame must be lit manually. If the pilot  
burner flame has gone out, follow these instructions  
exactly.  
1. Set the thermostat to its lowest setting.  
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  
11. Turn the gas control knob counterclockwise  
to ON.  
12. Replace the pilot burner access panel.  
13. Replace the gas control access panel.  
14. Reconnect all electric power to the appliance.  
15. Set the thermostat to the desired setting.  
clockwise  
to OFF.  
NOTE: The gas control knob cannot be turned  
from PILOT to OFF unless it is pushed in  
slightly. Do not force the gas control knob.  
Turning Off Appliance  
Vacation Shutdown: Set the thermostat to the desired  
room temperature while you are away.  
Complete Shutdown: Push the gas control knob in  
5. Wait five minutes to clear out any unburned gas. If  
you then smell gas, STOP! Follow the instructions in  
step 3, IF YOU SMELL GAS section, in the Warn-  
ings listed. If you do not smell gas, continue with the  
next step.  
6. Remove the pilot burner access panel located below  
and behind the gas control.  
slightly and turn clockwise  
to OFF. Do not  
force. Appliance completely shuts off. Follow the  
steps in Lighting the Pilot Burner Flame section to  
resume normal operation.  
7. Find the pilot burner by following the metal tube from  
the gas control. The pilot burner is between the two  
burner tubes behind the pilot burner access panel.  
69-0668—1  
 
10  
VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL  
 
69-0668—1  
11  
Home and Building Control  
Honeywell Inc.  
Honeywell Plaza  
Home and Building Control  
Honeywell Limited-Honeywell Limitée  
155 Gordon Baker Road  
North York, Ontario  
P.O. Box 524  
Minneapolis, MN 55408-0524  
M2H 3N7  
Printed in U.S.A. on recycled  
paper containing at least 10%  
69-0668—1 J.S. Rev. 6-98  
post-consumer paper fibers.  
 

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