TRADELINE
®
VR8345M Universal
Electronic Ignition Gas Contr ol
Application
These universal electronic ignition gas controls are used
in gas-fired appliances with capacities up to 300 cu ft/hour
at 1 inch wc pressure drop [8.5 cu m/hour at 0.25 kPa] for
natural gas. The VR8345M will operate with a direct spark
(DSI), hot surface (HSI) or intermittent pilot ignition. The
control includes a manual valve, two automatic operators, a
pressure regulator, pilot adjustment, pilot plug, conduit
cover and ignition adapter. Refer to the following list for
the VR8345M specifications.
TABLE 1—GAS CAPACITY.
Size
(Inlet x Outlet)
3/4 x 3/4 300 cu ft/hour
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].
Use conversion factors in Table 2 to convert capacities
for other gases.
TABLE 2—GAS CAPACITY
CONVERSION FACTORS.
Gas
Manufactured 0.60 0.516
Mixed 0.70 0.765
Propane 1.53
APPROVALS:
American Gas Association Design Certificate: L2025007.
Canadian Gas Association Design Certificate: L2025007.
PIPE ADAPTERS: Includes two 3/4 to 1/2 inch NPT bush-
ings and one 1/2 to 3/8 inch NPT bushing.
CROSS REFERENCE: See Table 3 for cross reference
information.
Capacity (at 1 in. wc
pressure drop)
[8.5 cu m/hour]
Specific
Gravity
a
Multiply Listed
Capacity By
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 make sure the product is suitable for your
application.
AMBIENT TEMPERATURE RANGE: -40° to +175° F
[-40° to +79° C].
BODY PATTERN: Straight-through.
REGULATOR TYPE: Standard opening.
INLET X OUTLET SIZE: 3/4 x 3/4 inch.
IGNITION ADAPTER: Configures VR8345M to operate
with direct spark or hot surface ignition.
ELECTRICAL RATINGS:
Voltage and Frequency: 24 Vac, 60 Hz.
Current Draw: 0.7A.
CAPACITY: See Table 1.
Minimum
Regulated Capacity
30 cu ft/hour
0.8 cu m/hour]
3. The installer must be a trained, experienced service
technician.
4. After installation is complete, use these instructions to
check out product operation.
Maximum
Regulated Capacity
415 cu ft/hour
[11.8 cu m/hour]
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. When working with a system using intermittent
pilot ignition, do not bend pilot tubing at gas
control or pilot burner after compression fitting
has been tightened because gas leakage at the
connection can result.
4. Always install sediment trap in gas supply line
to prevent contamination of gas control.
5. 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.
J.H. • Rev. 10-94 • ©Honeywell Inc. 1994 • Form Number 69-0844—1
1 69-0844—1
TABLE 3—VR8345 REPLACES THESE IGNITION CONTROLS.
Old Model No. Manufacturer VR8200 VR8300 VR800
36E36-304 DSI/HSI WHITE RODGERS VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
36E36-304 IP WHITE RODGERS VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
720-050 ROBERTSHAW VR8205A2024 VR8305M3506 — VR8345M4302
720-051 ROBERTSHAW VR8205A2024 VR8305M3506 — VR8345M4302
720-070 ROBERTSHAW VR8204A2076 VR8304A3509 — VR8345M4302
V4185A1000 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M3402
V4185A1010 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4185B1008 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4185B1016 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4185B1024 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225A1002 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225A1028 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225A1044 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225A1051 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225A1077 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225B1000 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225B1018 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4225B1026 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4227A1000 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4227A1018 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4227B1008 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4227B1016 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4249A1004 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4249A1012 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4249A1020 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4297A1005 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4297A1013 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4297A1021 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4297A1039 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4297A1047 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4297A1054 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4298A1004 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V4298A1012 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V445A1009 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
V445A1017 HONEYWELL VR8205A2024 VR8305M3506bVR8450A4113bVR8345M4302
V8185A1001 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
V8185A1019 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
V8185A1035 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
V8185B1009 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
a
Direct ignition application.
b
Requires Honeywell AT40 or AT72 transformer.
c
Regulator setting on replacement valve differs from original. Adjust to rated pressure as necessary for optimum performance.
d
Shipped by Honeywell as LP gas only, may have been converted to natural gas by OEM.
e
Use with 1/8 in. compression fitting, part no. 3934014-1.
f
Use with 3/4 in. angle flange, part no. 393690-15 .
g
Requires 1/2 in. straight flange (part no. 393690—16) or an angle flange (part no. 393690—13).
Universal
Replacement
a
a
a
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a,b
a
a
a
a
(Continued)
69-0844—1 2
TABLE 3—VR8345 REPLACES THESE IGNITION CONTROLS (Continued).
b,c
VR8345M4302
Universal
Replacement
Old Model No. Manufacturer VR8200 VR8300 VR800
V8185B1017 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
V8247A1000 HONEYWELL VR8205A2024 VR8305A3506 VR8450A4113 VR8345M4302
V8247B1005 HONEYWELL VR8205A2024 VR8305A3506 VR8450A4113 VR8345M4302
V845A1018 HONEYWELL VR8205A2024 VR8305A3506 VR8450A4113 VR8345M4302
V845A1026 HONEYWELL VR8205A2024cVR8305A3506 VR8450A4113cVR8345M4302
V845A1034
V845A1133
d
HONEYWELL VR8205A2024 VR8305A3506 VR8450A4113 VR8345M4302
d
HONEYWELL VR8205A2024 VR8305A3506 VR8450A4113 VR8345M4302
VR4450M2035 HONEYWELL VR8205A2024bVR8305A3506bVR8450A4113bVR8345M4302
VR4450M2126 HONEYWELL VR8205A2024bVR8305A3506bVR8450A4113bVR8345M4302
VR4450M2159
d
HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
VR445M1009 HONEYWELL VR8205A2024bVR8305M3506bVR8450A4113bVR8345M4302
VR445M1017
d
HONEYWELL VR8205A2024
b,c
VR8305M3506
b,c
VR8450A4113
VR8204A2032 HONEYWELL — — — VR8345M4302
VR8204A2001 HONEYWELL VR8204A2076 — — VR8345M4302
VR8204A2027 HONEYWELL VR8204A2076c— — VR8345M4302
VR8204A2035 HONEYWELL VR8204A2076c— — VR8345M4302
VR8204A2043
d
HONEYWELL VR8204A2076c— — VR8345M4302
VR8204A2050 HONEYWELL VR8204A2076 — — VR8345M4302
VR8204A2068
d
HONEYWELL VR8204A2076 — — VR8345M4302
VR8204A2076 HONEYWELL VR8204A2076 — — VR8345M4302
VR8204A2092
d
HONEYWELL VR8204A2076c— — VR8345M4302
VR8204A2100 HONEYWELL VR8204A2076e— — VR8345M4302
VR8204A2118 HONEYWELL VR8204A2076
e,f
— — VR8345M4302
VR8204A2126 HONEYWELL VR8204A2076 — — VR8345M4302
VR8204A2134 HONEYWELL VR8204A2076c— — VR8345M4302
VR8204A2142 HONEYWELL VR8204A2076 — — VR8345M4302
VR8204A2167
d
HONEYWELL VR8204A2076c— — VR8345M4302
VR8204A2175 HONEYWELL VR8204A2076c— — VR8345M4302
VR8205A2008 HONEYWELL VR8205A2024 — — VR8345M4302
VR8205A2016
d
HONEYWELL VR8205A2024c— — VR8345M4302
VR8205A2024 HONEYWELL VR8205A2024 — — VR8345M4302
VR8205A2073 HONEYWELL VR8205A2024e— — VR8345M4302
VR8440A2001 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440A2019
d
HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440A2050 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440A2076 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440A2084 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440A2092 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440A2100 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440A2118 HONEYWELL VR8204A2076eVR8304M3509 VR8440A3025eVR8345M4302
a
Direct ignition application.
b
Requires Honeywell AT40 or AT72 transformer.
c
Regulator setting on replacement valve differs from original. Adjust to rated pressure as necessary for optimum performance.
d
Shipped by Honeywell as LP gas only, may have been converted to natural gas by OEM.
e
Use with 1/8 in. compression fitting, part no. 3934014-1.
f
Use with 3/4 in. angle flange, part no. 393690-15 .
g
Requires 1/2 in. straight flange (part no. 393690—16) or an angle flange (part no. 393690—13).
a
a
a
a
a,c
a
a
a,b
a,b
a,b
a,b
a,b,c
c
c
c
c
e
e,f
c
c
c
a
a,c
a
a,c
c
c
c
e
(Continued)
3 69-0844—1
TABLE 3—VR8345 REPLACES THESE IGNITION CONTROLS (Continued).
Old Model No. Manufacturer VR8200 VR8300 VR800
VR8440A2134 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440A2142 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440M1000 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440M2008 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440M2016 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440M2024 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440M2032
VR8440M2040
d
HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440M2057 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440M2065 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440M2073 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR8440M2081
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8440M2099 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR844A1002 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844A1028
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR844A1051 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844A1085 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1006 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1014 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1063 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1162 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1170 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1188
VR844M1196
VR844M1220
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
d
HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1246 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844M1287
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR844M1295 HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR844N1003 HONEYWELL VR8204A2076 VR8304M3509 VR8440A3025 VR8345M4302
VR844R1005
d
HONEYWELL VR8204A2076cVR8304M3509 VR8440A3025cVR8345M4302
VR8450A2000 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
VR8450A2109 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
VR8450A2117
d
HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
VR8450M2023 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
VR8450M2064 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
VR8450R6003 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
VR845M1013 HONEYWELL VR8205A2024 VR8305M3506 VR8450A4113 VR8345M4302
a
Direct ignition application.
b
Requires Honeywell AT40 or AT72 transformer.
c
Regulator setting on replacement valve differs from original. Adjust to rated pressure as necessary for optimum performance.
d
Shipped by Honeywell as LP gas only, may have been converted to natural gas by OEM.
e
Use with 1/8 in. compression fitting, part no. 3934014-1.
f
Use with 3/4 in. angle flange, part no. 393690-15 .
g
Requires 1/2 in. straight flange (part no. 393690—16) or an angle flange (part no. 393690—13).
Universal
Replacement
c
c
c
c
c
c
c
c
c
c
c
c
a
a
a
a
a
a
69-0844—1 4
CAUTION
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 intermittent pilot (IP) module.
Fig. 1—Use moderate amount of pipe compound.
TWO IMPERFECT
THREADS
GAS CONTROL
PIPE
IMPORTANT: These gas controls are shipped with pro-
tective seals over inlet and outlet tappings. Do not
remove seals until ready to connect piping.
Follow the appliance manufacturer instructions if avail-
able; otherwise, use the following instructions.
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
TRADELINE® gas control. Part number 393691 will convert from natural to LP gas. Part number 394588 will convert
from LP to natural gas.
USE PIPE ADAPTER 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 a pipe adapter. Install the pipe 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 pipe adapter is installed,
attach the gas control to the adapter as outlined in the Install
Pipe Adapters to Gas Control section.
NOTE: Using a pipe adapter increases the overall length of
the gas control.
INSTALL PIPE ADAPTER TO GAS CONTROL
Install adapter to gas control as follows:
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. 1.
3. Insert bushing in gas control and carefully thread pipe
into the bushing until tight.
THREAD PIPE THE AMOUNT
SHOWN IN TABLE 4 FOR
INSERTION INTO GAS CONTROL
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).
M3075A
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.
For 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.
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 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.
IMPORTANT: Do not thread pipe too far. Valve distortion
or malfunction can result when the pipe is inserted
too deeply into the gas control.
5 69-0844—1
Fig. 2—Install sediment trap.
DROP
HORIZONTAL
3 INCHES
[76]
MINIMUM
HORIZONTAL
PIPED
GAS
SUPPLY
GAS
CONTROL
2
DROP
TUBING
1
GAS
SUPPLY
Fig. 3—Top view of gas control.
GAS
CONTROL
RISER
PIPED
GAS
SUPPLY
3 INCHES
[76]
MINIMUM
2
PRESSURE REGULATOR
ADJUSTMENT (UNDER
CAP SCREW)
INLET
PRESSURE TAP
INLET
GAS CONTROL KNOB
1
MUST USE WIRE ADAPTER (NOT SHOWN) ON HSI OR DSI SYSTEM.
2
MUST USE PILOT PLUG (NOT SHOWN) ON HSI OR DSI SYSTEM.
CONVENIENCE
TERMINALS (2)
(OPTIONAL)
1
WIRING
TERMINALS (2)
OUTLET
PRESSURE
TAP
OUTLET
PILOT OUTLET
PILOT ADJUSTMENT
(UNDER CAP SCREW)
M8436
2
GAS
RISER
3 INCHES
[76]
MINIMUM
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.
CONTROL
2
M8435
4. Apply a moderate amount of good quality pipe compound (do not use Teflon tape) to pipe only, leaving two end
threads bare. See Fig. 1. On LP installations, use compound
resistant to LP gas.
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. See Figs. 3
and 4.
TABLE 4—NPT PIPE THREAD LENGTH IN INCHES.
Maximum Depth
Pipe Can Be
Pipe
Size
Thread Pipe
This Amount
Inserted Into
Control
3/8 9/16 3/8
1/2 3/4 1/2
3/4 13/16 3/4
When working with an intermittent pilot ignition system, go to Connect Pilot Gas Tubing section next. When
installing on a hot surface or direct spark ignition system,
go to the Wiring section.
Fig. 4—Proper use of wrench on gas control.
APPLY WRENCH
FROM TOP OR
BOTTOM OF GAS
CONTROL TO
EITHER SHADED AREA
M8562
CONNECT PILOT GAS TUBING (INTERMITTENT
PILOT IGNITION ONLY)
1. Remove the pilot gas seal (plug).
2. Cut tubing to desired length and bend as necessary for
routing to pilot burner.
CAUTION
1. Do not make sharp bends or deform the tubing.
2. Do not bend tubing at the gas control or pilot
burner after compression fitting has been tightened because this can result in gas leakage at
the connection.
69-0844—1 6
3. Square off and remove burrs from end of tubing.
4. Use the compression fitting supplied with this gas
control. Slip the fitting over the tubing and slide out of the
way.
NOTE: When replacing a gas control, cut off old compres-
sion fitting and replace with the new compression fitting
provided on the gas control. Never use the old compression fitting because it may not provide a gas-tight seal.
5. Push tubing into the pilot gas tapping on the outlet end
of the control until it bottoms. While holding tubing all the
way in, slide compression fitting into place, engage threads
and turn until finger tight. Then tighten one more turn with
wrench. Do not overtighten. Refer to Figs. 5 and 6.
6. Connect other end of tubing to pilot burner according
to pilot burner manufacturer instructions.
Fig. 5—Always use new compression fitting.
GAS CONTROL
TIGHTEN NUT ONE TURN
BEYOND FINGER TIGHT
FITTING BREAKS OFF AND CLINCHES
TUBING AS NUT IS TIGHTENED
TO
BURNER
M3076A
Fig. 6—Remove pilot gas seal (plug) and
install pilot gas tube for intermittent pilot
application on VR8345.
O
N
O
F
F
PV
PV
MV
MV
PILOT GAS
TUBE
M8441
WIRING
All wiring, including insulated quick connect terminals,
must comply with applicable electrical codes and ordinances.
1. Check the power supply rating on the gas control and
CAUTION
Disconnect power supply before making wiring
connections to prevent electrical shock or equipment damage.
make sure it matches the available supply. Install thermostat
and other controls as required.
2. When the gas control is installed on a hot surface or
direct spark ignition system, attach the wire adapter provided
to the wiring terminals. See Fig. 7 for the wire terminal
location.
Follow the wiring instructions furnished by the appliance
manufacturer, if available, or use the following general instructions. Where these instructions differ from the appliance
manufacturer, follow the appliance manufacturer instructions.
Fig. 7—Install wire adapter for hot surface or direct spark ignition systems. Pilot plug must be in the
valve pilot opening.
O
N
O
FF
3. Connect control circuit to gas control terminals. See
Figs. 3 and 8, 9, or 10.
4. Adjust the thermostat heat anticipator to 0.7, the rating
stamped on the valve operator.
WIRE
ADAPTER
V
P
V
P
V
M
V
M
PILOT GAS SEAL
(PLUG)
M8440
7 69-0844—1
Fig. 8—VR8345 wiring connections in intermittent ignition system.
GND
MV/PV
PV
(BURNER)
MV
24V
GND
S8610U
5
VENT
TH-W
DAMPER
PLUG
24V
SENSE
SPARK
1
L1
(HOT)
AIR
PROVING
SWITCH
COMBUSTION
AIR BLOWER
RELAY
L2
COMBUSTION
AIR BLOWER
MOTOR
CONTROLLER
1
MV/PV
MV
MV
VR8345
DUAL VALVE COMBINATION
GAS CONTROL
SENSOR
IGNITER
PILOT
BURNER
PILOT GAS
SUPPLY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
ALTERNATE LIMIT CONTROLLER LOCATION.
2
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
3
CONTROLS IN 24V CIRCUIT MUST NOT BE GROUND LEG TO TRANSFORMER.
4
LEAVE VENT DAMPER PLUG CONNECTED.
5
REMOVE JUMPER AND CONNECT SENSE TERMINAL ON TWO ROD APPLICATION ONLY.
6
GROUND
Fig. 9—VR8345 wiring connections in hot surface ignition system.
S8910U HOT SURFACE IGNITER CONTROL
M
P
L
S
., M
N
5
5
4
2
6
S
8910U
5
rd
. C
a
n
c
ry
o
r d
e
a
m
a
lfu
n
c
e
r try
to
u
n
w
e
t -- re
E
V
)
D
L
N
A
V
(G
0
0
A
0
a
u
s
e
7
5
th
.
STATUS LED:
tio
n
if
1. Flash-Ignition Lockout
2 Flash-Weak Flame Signal
s
e
a
3 Flash-Internal Error-Replace Control
p
la
c
e
it.
Pulsing "Heartbeat"-Normal Operation
T
R
I
A
L
N
U
M
.
O
F
C
O
N
F
I
G
U
D
V
P
L
E
L
24
IN
V
A
L
V
E
=
2
4
T
I
M
E
,
T
R
I
A
L
S
R
A
T
I
O
N
U
G
!
W
ARNING
E
x
p
lo
s
io
n
h
a
z
a
s
e
rio
u
s
in
ju
T
h
is
d
e
v
ic
e
c
a
n
it g
e
ts
w
e
t. N
e
v
d
e
v
ic
e
th
a
t h
a
s
b
e
e
)
R
E
)
N
D
D
R
N
N
U
B
24V
(G
G
(
2
H
O
T S
U
R
FA
C
E IG
P
U
T
V
O
L
T
A
G
E
S
=
1
2
0
&
2
H
S
I =
1
2
0
V
, 6
.5
A
A
M
A
X
T
O
1
N
E
M
T
A
L
2
4
V
L
O
Prepurge Time = 30 Sec
Igniter Warmup Time = 34 sec
2
0
V
A
C
U
T
R
A
L
I
S
2
L
H
V
, 1
E
V
L
A
V
L2
N
ITIO
4
V
A
A
X
A
D
=
0
1
2
0
H
I
S
H
THERMOSTAT
2
4
LIMIT
CONTROLLER
L1
(HOT)
N
C
, 6
0
H
Z
.2
+
V
A
L
V
V
A
C
O
T
I
N
S
T
F
O
R
S
E
N
1
A
P
P
L
6
3
M8564
A
U
T
O
IG
N
IT
IO
N
S
Y
S
T
E
M
S
A
N
S
I Z
2
1
.2
0
E
L
O
A
D
S
E
E
R
U
C
T
I
O
N
S
E
R
E
M
O
T
E
S
S
E
/
D
U
A
L
N
R
O
D
E
L
I
C
A
T
I
O
N
S
S
TRIAL
TIME: 7 SEC
NUM OF
TRIALS: 1
THERMOSTAT OR
CONTROLLER
VR8345M
COMBINATION
GAS CONTROL
BURNER
GROUND
QUICK
CONNECTS
MV
MV
HSI WIRE
ADAPTER
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
SENSE TERMINAL AND Q354 FLAME SENSOR ON D MODELS ONLY.
69-0844—1 8
3
Q354 FLAME
SENSOR
HOT SURFACE
IGNITER/SENSOR
LIMIT
CONTROLLER
2
L1
(HOT)
L2
1
3
M8563
Fig. 10—VR8345 wiring connections in direct spark ignition system (single rod application).
L1
BURNER
(HOT)
L2
1
MV
MV
QUICK
CONNECTS
M8438
DSI WIRE
ADAPTER
VR8345
COMBINATION
GAS CONTROL
2
S87 CONTROL MODULE
5
ALARM
24V (GND)
VALVE
VALVE
24V
4
TEMPERATURE
CONTROLLER
3
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
2
3
MAXIMUM IGNITER-SENSOR CABLE LENGTH: 3 ft [.9 m] OR LESS.
4
3A REPLACEABLE FUSE.
ALARM TERMINAL PROVIDED ON SOME MODELS.
5
GND
IGNITER-SENSOR AND
BURNER GROUND
ALARM, IF USED
Q347 IGNITER-SENSOR
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 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 operates differently in intermittent
pilot, hot surface and direct spark ignition systems.
The gas control knob settings for an intermittent pilot
system are as follows:
OFF: Prevents pilot and main burner gas flow.
ON: Permits gas to flow into the control body. Under
control of the thermostat and intermittent pilot module, gas can flow to the pilot and main burner.
The gas control knob settings for hot surface or direct
spark ignition systems are as follows:
OFF: Prevents main burner gas flow.
ON: Permits main burner gas flow. Under control of the
thermostat and ignition module, gas can flow to the
main burner.
NOTE: Gas 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 a rich soap and water
solution anytime work is done on a gas control.
9 69-0844—1
GAS LEAK TEST
1. Paint all pipe connections upstream of the gas control
with a rich soap and water solution. Bubbles indicate a gas
leak.
2. If a gas leak is detected, tighten the pipe connection.
CAUTION
Stand clear while lighting main burner to prevent
injury caused from hidden gas leaks that could
cause flashback in the appliance vestibule.
3. Turn on the system by rotating the gas control knob
counterclockwise to ON.
4. Light the main burner by following the appliance
manufacturer instructions or turning up the thermostat to call
for heat.
5. With the main burner in operation, paint all pipe joints
and gas control inlet and outlet with a rich soap and water
solution.
6. If another gas leak is detected, tighten joints and pipe
connections.
7. If gas leak cannot be stopped, turn the gas control knob
clockwise to OFF.
8. Replace the leaking part.
9. Perform the gas leak test.
ADJUST THE PILOT BURNER FLAME (INTERMITTENT PILOT IGNITION ONLY)
The pilot flame should envelop 3/8 to 1/2 in. [10 to
13 mm] of the igniter-sensor tip. See Fig. 11. To adjust the
pilot flame:
1. Remove the pilot adjustment cover screw. Refer to
Fig. 3.
2. Turn the inner adjustment screw clockwise t o
decrease or counterclockwise to increase pilot flame.
3. To prevent gas leakage, always replace the cover
screw after adjustment.
Fig. 11—Proper flame adjustment.
PROPER FLAME
3/8 TO 1/2 INCH
[10 TO 13 mm]
IGNITERSENSOR
M3080A
ADJUSTMENT
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. WHEN 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
Gas Controls Handbook, form 70-2602, and
compare to the Btuh input rating on the
appliance nameplate.
3. WHEN 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 nameplate.
2. With the main burner operating, check the gas control
flow rate by using the meter clocking method or check the
gas pressure using a manometer connected to the gas control
outlet pressure tap. See Fig. 3.
3. If necessary, adjust the pressure regulator to match the
appliance rating. Refer to Table5 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 counterclockwise 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
cannot 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 5), replace the gas control. Otherwise, take the
necessary steps to provide proper gas pressure to the gas
control.
69-0844—1 10
TABLE 5—PRESSURE REGULATOR
SPECIFICATION PRESSURES FOR STANDARD-
Unit
Measure
CHECK SAFETY SHUTDOWN PERFORMANCE
OPENING NATURAL GAS.
Outlet Pressure
(Full Rate)
Nominal
of
in. wc 5.0 - 7.0 3.5 3.0 - 5.0
kPa 1.2 - 1.7 0.9 0.7 - 1.2
Inlet
Pressure
Range
Nominal
Factory
Outlet
Setting
Adjustment
Setting
Range
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 through 7 below before starting and
compare to the safety shutdown or safety lockout tests
recommended for the intermittent pilot (IP), hot surface
(HSI) or direct spark (DSI) module. When different, use
the procedure recommended for the module.
1. Turn off gas supply.
2. Set the thermostat or controller above room tempera-
ture to call for heat.
3. • Intermittent Pilot Ignition—Watch for an ignition
spark at pilot burner either immediately or following prepurge. See ignition module specifications.
• Hot Surface or Direct Spark Ignition—Watch for
an ignition spark or glow at hot surface igniter
either immediately or following prepurge. See ignition module specifications.
4. If module has timed ignition, time the length of the
igniter operation. See ignition module specifications.
5. • Intermittent Pilot Ignition—After the module locks
out, turn on gas supply and make sure there is no
gas flow to the pilot or main burner.
NOTE: With modules that continue spark until pilot lights or
system is shut down manually, pilot should light when
gas supply is turned on.
• Hot Surface or Direct Spark Ignition—After the
module locks out, turn on gas supply and assure
there is no gas flow to main burner.
6. Set the thermostat below room temperature and wait
at least 45 seconds to reset system.
7. Operate system through one complete cycle to make
sure all controls operate properly.
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.
NOTE: If the gas control will be exposed to high ammonia
conditions, e.g., those used in greenhouses or animal barns,
contact your Honeywell sales representative to request a
gas control with corrosion resistant construction.
The gas control should be replaced if:
• It does not perform properly during checkout or
troubleshooting.
• The gas control knob is hard to turn or push down.
• 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.
11 69-0844—1
CAUTION
Do not apply a jumper across or short the valve coil
terminals. Doing so can burn out the heat anticipator
in the thermostat or damage the ignition module.
IF MAIN BURNER WILL NOT COME ON WITH
CALL FOR HEAT
1. Make sure the gas control knob is in the ON position.
2. Adjust thermostat several degrees above room temperature.
3. Using an ac voltmeter, check for voltage at gas control.
• Intermittent Pilot Igntion—If pilot lights, measure
voltage across MV/PV and MV. If pilot does not light,
measure across MV/PV and PV before safety lockout
occurs.
• Hot Surface or Direct Spark Ignition—Measure volt-
age across MV terminals at gas control.
4. If voltage is not present, check control circuit for pro-
per operation.
5. If proper control circuit voltage is present, replace
gas control.
INSTRUCTIONS TO THE HOMEOWNER (FOR
YOUR SAFETY, READ BEFORE OPERATING)
W ARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH
Follow these warnings exactly:
1. Pilot/main burner flame is lit automatically. Do
not light the pilot/main burner flame manually.
2. Before lighting appliance, smell around the appliance for gas. Be sure to smell next to the floor
because LP gas is heavier than air.
3. IF YOU SMELL GAS:
• Turn off the gas supply at the appliance ser-
vice 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 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, call a qualified service
technician to replace the gas control. Force or
attempted repair can result in a fire or explosion.
5. Call a qualified service technician to replace the
gas control if it has been flooded with water.
6. 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 typical gas
control application, but the specific controls used and
the procedures outlined by the manufacturer or your
appliance may differ and require special instructions.
To Turn On The Applicance
Stop: Read the warnings on page 9.
The pilot/main burner flame is lit automatically. Do not
attempt to manually light the pilot. 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 clock-
wise to OFF.
5. Wait five minutes to clear out any unburned gas. If you
then smell gas, STOP! Follow step 3 of 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 control
knob to OFF and contact a qualified service technician for
assistance.
Turning Off The Appliance
VACATION SHUTDOWN—Set the thermostat to the de-
sired 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.
Home and Building Control Home and Building Control Helping You Control Your World
Honeywell Inc. Honeywell Limited—Honeywell Limitée
1985 Douglas Drive North 740 Ellesmere Road
Golden Valley, MN 55422 Scarborough, Ontario
69-0844—1 12
Printed in U.S.A.
M1P 2V9
QUALITY IS KEY
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