resideo VR4305 User manual

INSTALLATION INSTRUCTIONS
69-0837-01
VR4305 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] for natural gas. They
include a manual valve, two automatic operators, a
pressure regulator, and a conduit cover. The ambient
temperature range for the standard-opening model
(VR4305M) is -40° to 175° F [-40° to +79° C].
Body Pattern: Straight-through.
Inlet x Outlet Sizes Available: 1/2 x 3/4 inch and
3/4 x 3/4 inch
This gas control comes with two 3/4 inch NPT to
1/2 inch NPT bushings and one 1/2 inch NPT to
3/8 inch NPT bushing. Also included is a 393691 nat-
ural gas to LP gas conversion kit.
Adapters: Adapters available for 1/2 and 3/4 inch
straight and angle connections. Refer to Table 2.
Electrical Ratings:
Voltage and Frequency: 120 Vac, 60 Hz.
Thermostat Heat Anticipator Setting: 0.14A.
Current Draw: 0.14A.
Capacity:
aCapacity 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 1 to convert capacities
for other gases.
NOTE: Flange Kits include one flange with attached
O-ring and four mounting screws.
Approvals:
American Gas Association design certificate:
L2025007.
Canadian Gas Association design certificate:
L2025007.
Australian Gas Association approved.
Delta C.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a haz-
ardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable
for your application.
3. The installer must be a trained, experienced ser-
vice technician.
4. After installation is complete, use these instruc-
tions to check out product operation.
Size (Inlet x Outlet)
Capacity (at 1 inch wc pressure
drop)aMinimum Regulated Capacity Maximum Regulated Capacity
1/2 x 1/2 240 feet3/hour [6.8 meter3/hour] 30 feet3/hour [0.8 meter3/hour] 340 feet3/hour [9.6 meter3/hour]
1/2 x 3/4 270 feet3/hour [7.6 meter3/hour] 30 feet3/hour [0.8 meter3/hour] 370 feet3/hour [10.5 meter3/hour]
3/4 x 3/4 300 feet3/hour [8.5 meter3/hour] 30 feet3/hour 0.8 meter3/hour] 415 feet3/hour [11.8 meter3/hour]
Table 1. Gas Capacity Conversion Factors.
Gas Specific Gravity
Multiply Listed
Capacity By
Manufactured 0.60 0.516
Mixed 0.70 0.765
Propane 1.53 1.62
Table 2. Adapter (Flange) Part Numbers.
Inlet/Outlet
Pipe Size Flange Type
Part Number
Without Hex
Wrench
With Hex
Wrench
1/2 inch NPT Straight 393690-6 393690-16
Elbow 393690-3 393690-13
3/4 inch NPT Straight 393690-4 393690-14
Elbow 393690-5 393690-15

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
69-0837—01 2
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, call a qualified service
technician to replace the gas control. Force or
attempted repair can result in fire or explosion.
CAUTION
1. Never apply a jumper across or short the valve
coil terminals. This can burn out the heat
anticipator in the thermostat or damage the
electronic direct ignition (DI) module.
2. When a gas control is installed external to the
appliance, a conduit cover must be installed.
See Fig. 1. Place the conduit cover over the
flange, then rotate the conduit cover into
position.
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.
Do not attempt to use a gas control set for natural
gas on LP gas or a gas control set for LP gas on
natural gas.
Convert standard-opening gas controls from natural gas
to LP gas with the conversion kit included with this gas
control. Part number 393691 converts from natural to LP
gas. Part number 394588 converts from LP to natural
gas.
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. Make sure the O-ring fits into the flange groove. If
the O-ring is not attached or is missing, do not use
the flange.
4. With the O-ring facing the gas control, align the
screw holes on the gas control with the holes in the
flange. Insert and tighten the screws provided with
the flange. See Fig. 1. 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.
See Fig. 3. On LP installation, use compound resis-
tant to LP gas. Do not use Teflon tape.
3. Insert bushing in gas control and carefully thread
pipe into the bushing until tight.
Using Adapters to Solve Swing Radius
Problems
In some field service applications, space limitations
make it difficult or impossible to thread the gas control
onto the gas supply pipe. This problem can be resolved
for many installations by using an adapter. Install the
adapter on the end of the supply pipe in place of the gas
control by following the same precautions and
instructions that are used for installing the gas control.
After the adapter is installed, attach the gas control to
the adapter as outlined above.
NOTE: Using an adapter increases the overall length of
the gas control.
Fig. 1. Install flange to gas control.
Location
Locate the combination gas control in the appliance
vestibule on the gas manifold. In replacement
applications, locate the gas control in the same location
as the old 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 safeguard 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.
• Make sure the ambient temperature does not exceed
the ambient temperature ratings for each component.
• Cover gas control when the 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
possible.
M3099A
VALVE OUTLET
FLANGE
9/64 INCH HEX SCREWS (4)
1DO NOT OVERTIGHTEN SCREWS.
TIGHTEN TO 25 INCH POUNDS.
1
6/32 INCH ROUND
SCREWS (1)
CONDUIT
COVER

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
369-0837—01
Install Piping to Gas Control
All piping must comply with applicable 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. Make sure all tubing bends are
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. 2.
Install Gas Control
1. This gas control can be mounted from 0 to 90
degrees in any direction from the vertical position
of the gas control knob.
2. Mount the gas control so gas flow is in the direc-
tion of the arrow on the bottom of the gas control.
3. Thread pipe the amount shown in Table 3 for inser-
tion into the gas control or flange. Do not thread
pipe too far. Valve distortion or malfunction can
result when the pipe is inserted too deeply into the
gas control.
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. 3.
5. Remove seals over gas control inlet and outlet if
necessary.
6. Connect pipe to gas control inlet and outlet. Use
wrench on the square ends of the gas control. If a
flange is used, place wrench on flange rather than
on gas control. Refer to Fig. 4 and 5.
Fig. 2. Install sediment trap.
Fig. 3. Use moderate amount of pipe compound.
Fig. 4. Top view of gas control.
WIRING
Follow the wiring instructions furnished by the appliance
manufacturer, if available, or use the general instructions
provided below. Where these instructions differ from the
appliance manufacturer, follow the appliance
manufacturer instructions.
All wiring including insulated quick connect terminals
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 gas control
and make sure it matches the available supply.
Install thermostat and other controls as required.
2. When the gas control is installed external to the
appliance, install the conduit cover on the conduit
fitting. Do not secure the conduit cover at this time.
3. Connect control circuit to gas control terminals.
See Fig. 4 and 6.
NOTE: Use leadwires with insulated terminals.
GAS
CONTROL
GAS
CONTROL
HORIZONTAL
DROP
PIPED
GAS
SUPPLY
PIPED
GAS
SUPPLY
3 IN.
(76 MM)
MINIMUM
3 IN.
(76 MM)
MINIMUM
RISER
GAS
CONTROL
TUBING
GAS
SUPPLY
HORIZONTAL
DROP
3 IN.
(76 MM)
MINIMUM
RISER
M3077C
2
1
2
2
1
2
ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.
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.
Table 3. NPT pipe thread length in (in.).
Pipe Size
Thread Pipe
this Amount
Maximum Depth Pipe can
be Inserted into Control
3/8 9/16 3/8
1/2 3/4 1/2
3/4 13/16 3/4
TWO IMPERFECT
THREADS GAS CONTROL
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).
M3075D
PIPE
OUTLET
PRESSURE
TAP
INLET OUTLET
WIRING
TERMINALS (2)
INLET
PRESSURE TAP
PRESSURE REGULATOR
ADJUSTMENT (UNDER
CAP SCREW)
CONVENIENCE
TERMINALS (2)
(OPTIONAL)
GAS
CONTROL
KNOB
M9154A

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
69-0837—01 4
Fig. 5. Proper use of wrench on gas control with and without flanges.
Fig. 6. VR4305 wiring connections in a 120V Direct
Ignition System.
4. Make sure the conduit cover is in position and
secured to the gas valve with the screw provided.
See Fig. 1.
5. Adjust thermostat heat anticipator as instructed in
appliance manual (i.e., usually 0.1A).
STARTUP 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,
call a qualified service technician to replace
the gas control.
Gas Control Knob Settings
The gas control knob settings are as follows:
OFF: Prevents gas flow to main burner.
ON: Permits main burner gas flow. Under control of the
thermostat and direct ignition module, gas can flow to
the main burner.
NOTE: Gas controls are shipped with the gas control
knob in the ON position.
Turn On System
Rotate the gas control knob counterclockwise to
ON.
Turn On Main Burner
Follow instructions provided by appliance manufacturer
or turn up thermostat to call for heat.
APPLY WRENCH
FROM TOP OR
BOTTOM OF GAS
CONTROL TO
EITHER SHADED AREA
WHEN FLANGE IS NOT USED
APPLY WRENCH
TO FLANGE ONLY
WHEN FLANGE IS USED
M3085A
24V
24V (GND)
IGNITION MODULE
LIMIT CONTROLLER
VALVE
VALVE
GND
TEMPERATURE
CONTROLLER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
M3088
L1
(HOT)
L2
1
2
1
2
VR8305
COMBINATION
GAS CONTROL
Q347 IGNITER-SENSOR
BURNER
L1
L2

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
569-0837—01
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
control with a rich soap and water solution. Bub-
bles indicate a gas leak.
2. If a gas leak is detected, tighten the pipe connec-
tion.
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 flanges) and gas control inlet and
outlet with rich soap and water solution.
5. If another gas leak is detected, tighten flange
screws, joints, and pipe connections.
6. Replace the part if gas leak can not be stopped.
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. Make certain the primary
air supply to the main burner is properly
adjusted for complete combustion (refer to the
appliance manufacturer instructions).
2. IF CHECKING GAS INPUT BY CLOCKING THE
GAS METER:
• Make sure that the only gas flow through the
meter is that of the appliance being checked.
• Make certain that other appliances are
turned off with pilot burners extinguished (or
deduct that gas consumption from the meter
reading).
• Convert the flow rate to Btuh as described in
form 70-2602, Gas Controls Handbook, and
compare to the Btuh input rating on the
appliance nameplate.
3. IF CHECKING GAS INPUT WITH A MANOMETER
(PRESSURE GAUGE):
• To connect the manometer, be sure the gas
control knob is in the OFF position before
removing the outlet pressure tap plug.
• When removing the manometer, turn the gas
control knob back to OFF and replace the
outlet pressure tap plug.
• Shut off the gas supply at the appliance
service valve, or at the gas tank for LP gas,
before removing the outlet pressure tap plug
and before disconnecting the manometer
and replacing the outlet pressure tap plug.
• Perform the Gas Leak Test at the outlet
pressure tap plug.
Standard-Opening Pressure Regulator
1. The gas control outlet pressure should match the
manifold pressure listed on the appliance name-
plate.
2. With the main burner operating, check the gas con-
trol flow rate by using the meter clocking method
or check the gas pressure using a manometer con-
nected to the gas control outlet pressure tap. Refer
to Fig. 4.
3. If necessary, adjust the pressure regulator to
match the appliance rating. Refer to Table 4 or 5 for
the factory set nominal outlet pressures and
adjustment setting 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 pressure.
c. Always replace the cap screw and tighten
firmly to safeguard proper operation.
4. If the desired outlet gas pressure or gas flow rate
can not be achieved by adjusting the gas control,
check the gas control inlet pressure by using a
manometer at the inlet pressure tap. If the inlet
pressure is in the normal range (refer to Table 4 or
5), replace the gas control. Otherwise, take the nec-
essary steps to provide proper gas pressure to the
gas control.
Check Safety Shutdown Performance
WARNING
Fire or Explosion Hazard
Can cause property damage, severe injury, or
death.
Perform the safety shutdown test anytime work is
done on a gas system.
NOTE: Read steps 1 through 7 below before starting
and compare to the safety shutdown or safety
lockout tests recommended for the direct igni-
tion (DI) module. Where they differ, use the pro-
cedure recommended for the module.
1. Turn off gas supply.
2. Set the thermostat or controller above room tem-
perature 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. If module has timed ignition, time the length of the
igniter operation. See DI module specifications.
5. After the module locks out, open gas control knob
and make sure there is no gas flow to the main
burner.
6. Set the thermostat below room temperature and
wait one minute.
7. Operate system through one complete cycle to
make sure all controls operate properly.

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
69-0837—01 6
MAINTENANCE
WARNING
Fire or Explosion Hazard
Can cause property damage, severe injury, or
death.
Improper cleaning or reassembly can cause gas
leakage. When cleaning, be sure that the control
is reassembled properly and perform gas leak
test.
Regular preventive maintenance is important in
applications such as commercial cooking, agricultural
and industrial operations that place a heavy load on
system controls because:
• In many such applications, particularly commercial
cooking, the equipment operates 100,000 to 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.
The maintenance program should include regular
checkout of the gas control; see Startup and Checkout
section. To check out the control system, see the
appliance manufacturer 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.
If the gas control will be exposed to high ammonia
conditions; i.e., those used in greenhouses or animal
barns, contact your Resideo sales representative to
request a gas control with corrosion resistant
construction.
The gas control should be replaced if:
• It does not perform properly on checkout or
troubleshooting.
• 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.
Service
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 can 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
electronic module.
If Main Burner Will not Come On with Call
for Heat
1. Make sure the gas control knob is in the ON posi-
tion.
2. Adjust the thermostat several degrees above room
temperature.
3. Using an ac voltmeter, check for voltage across L1
and L2 terminals of the gas control.
4. If voltage is not present, check control circuit for
proper operation.
5. If proper control circuit voltage is present, replace
gas control.
Table 4. Pressure Regulator Specification Pressures in Inches WC.
Model Type of Gas
Nominal Inlet
Pressure Range
Outlet Pressure
Nominal Factory Outlet Setting Adjustment Setting Range
Full Rate Full Rate
Standard-opening Natural 5.0 - 7.0 3.5 3.0 - 5.0
LP 12.0 - 14.0 10.0 8.0 - 12.0
Table 5. Pressure Regulator Specification Pressures in kPa.
Model Type of Gas
Nominal Inlet
Pressure Range
Outlet Pressure
Nominal Factory Outlet Setting Adjustment Setting Range
Full Rate Full Rate
Standard-opening Natural 1.2 - 1.7 0.9 0.7 - 1.2
LP 2.9 - 3.9 2.7 2.0 - 3.0

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
769-0837—01
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. Before lighting main burner, smell around the
appliance for gas. Be sure to smell next to the
floor because LP gas is heavier than air.
2. 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 can not reach your gas supplier, call
the fire department.
3. 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, call a qualified
service technician to replace the gas control.
Force or attempted repair may result in a fire or
explosion.
4. Call a qualified service technician to replace
the gas control if it has been flooded with
water.
5. Replace the gas control in the event 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 typ-
ical gas control application, but the specific
controls used and the procedures outlined by
the manufacturer of your appliance may differ
and require special instructions.
STOP: Read the Warnings Above
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 2 in the
Warning in the Instructions To The Homeowner
section. 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 con-
trol 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 in the gas control knob
slightly and turn clockwise to OFF. Do not force.
Appliance will completely shut off. Follow the
Instructions to the Homeowner above to resume normal
operation.

VR4305 DIRECT IGNITION COMBINATION GAS CONTROL
© 2020 Resideo Technologies, Inc. All rights reserved.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
www.resideo.com
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
69-0837—01 M.S. Rev. 06-20 | Printed in United States