Honeywell VR4300A, VR4300C, VR4300H, VR4300M, VR4300P Installation Manual
VR4300
Continuous Pilot
Combination Gas Control
Application
These continuous pilot gas controls are used in gas-fired
appliances with capacities up to 300 feet3/hour at one inch wc
pressure drop [5.7 meters3/hour at 0.25 kPa] on natural gas.
They include a manual valve, safety shutoff, two automatic
operators, a pressure regulator, pilot adjustment, and a conduit cover. See Table 1 for temperature ranges and regulator
types.
BODY PATTERN: Straight-through body pattern.
CAPACITY:
Inlet x Outlet Capacity at 1 inch wc Minimum Maximum
Size (In.) Pressure Drop
1/2 X 1/2 180 feet3/hour 30 feet3/hour 225 feet3/hour
1/2 X 3/4 190 feet3/hour 30 feet3/hour 290 feet3/hour
3/4 X 3/4 200 feet3/hour 30 feet3/hour 300 feet3/hour
a
Capacity based on 1000 Btu/feet3, 0.64 specific gravity natural gas at 1 inch wc pressure drop [37.3 MJ/meter3, 0.64 specific
gravity natural gas at 0.25 kPa pressure drop].
[5.1 meter3/hour] [0.8 meter3/hour] [6.4 meter3/hour]
[5.4 meter3/hour] [0.8 meter3/hour] [8.2 meter3/hour]
[5.7 meter3/hour] [0.8 meter3/hour] [8.5 meter3/hour]
a
INLET X OUTLET SIZES AVAILABLE: 1/2 by 3/4 inch
and 3/4 by 3/4 inch.
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.
Current Draw: 0.14A.
Use conversion factors in Table 3 to convert capacities for
other gases.
Regulated Capacity Regulated Capacity
TABLE 1—TEMPERATURE RANGES AND
REGULATOR TYPES.
Ambient
Model Temperature Regulator
Number Range Type
VR4300A 0° F to 175° F Standard-opening
[-18° C to +79° C]
VR4300C 0° F to 175° F Step-opening
[-18° C to +79° C]
VR4300H 0° F to 175° F Slow-opening
[-18° C to +79° C]
VR4300M -40° F to 175° F Standard-opening
[-40° C to +79° C]
VR4300P -40° F to 175° F Step-opening
[-40° C to +79° C]
T.H. • Rev. 3-93 • © Honeywell Inc. 1993 • Form Number 69-0683—1
TABLE 2—ADAPTER (FLANGE) PART NUMBERS.
Part Number
Inlet/ Without With
Outlet Flange Hex Hex
Pipe Size Type Wrench 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
NOTE: Flange kits include one flange with attached O-ring
and fan mounting screw.
TABLE 3—GAS CAPACITY CONVERSION
FACTORS.
Specific Multiply Listed
Gas Gravity Capacity By
Manufactured 0.60 0.516
Mixed 0.70 0.765
Propane 1.53 1.62
APPROVALS:
American Gas Association design certificate: UP-70-57A.
Canadian Gas Association design certificate: 1029-CC-8375.
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 assure the product is suitable for your application.
3. Assure installer is a trained, experienced service technician.
4. After installation is complete, use these instructions to
check out product operation.
WARNING
!
FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH
Follow these warnings exactly:
1. Disconnect power supply before wiring to prevent
electrical shock or equipment damage.
2. To avoid dangerous accumulation of fuel gas,
turn off gas supply at the appliance service valve
before starting installation, and perform Gas
Leak Test after completion of installation.
3. 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 push down the reset button or turn the
gas control knob. Never use any tools. If the gas
control knob or reset button will not operate by
hand, replace the gas control using a qualified
service technician. Force or attempted repair can
result in fire or explosion.
CAUTION
!
Never apply a jumper across or short the valve coil
terminals. This may burn out the heat anticipator in
the thermostat.
IMPORTANT:
1. These gas controls are shipped with protective seals
over inlet and outlet tappings. Do not remove seals
until ready to connect piping.
2. When a gas control is installed external to the appliance, a conduit cover MUST be installed. Make sure
that conduit cover is placed over the flange before
rotating conduit cover into position.
Follow the appliance manufacturer’s instructions if avail-
able; otherwise, use the instructions provided below.
CONVERTING BETWEEN NATURAL AND LP GAS
To convert a gas control from natural gas to LP gas or
from LP gas to natural gas, contact your Honeywell
representative.
Convert standard- or slow-opening gas controls from
one gas to another with a conversion kit (ordered separately). Order part number 393691 to convert from natural
to LP gas. Order part number 394588 to convert from LP
to natural gas. Step-opening gas controls cannot be converted.
INSTALL ADAPTERS TO CONTROL
If adapters are to be installed on the gas control, mount
them as follows:
Flanges
1. Choose the appropriate flange for your application.
2. Remove seal over gas control inlet or outlet.
3. Assure the O-ring is fitted in the groove of flange. If
the O-ring is not attached or is missing, do not use flange.
4. With O-ring facing gas control, align the screw
holes on the 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 compound to bushing, leaving two end threads bare. On LP
installation, use compound resistant to LP gas. Do not use
Teflon tape.
3. Insert bushing in gas control and thread pipe carefully into bushing until tight.
Complete instructions below for piping, installing gas
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 on only the flange,
not on the control.
USING ADAPTERS TO SOLVE SWING RADIUS
PROBLEMS
In some field service applications, it is difficult or
impossible to thread the gas control onto the gas supply
pipe because of space limitations. This problem can be
resolved in many applications by using an adapter. Install
the adapter on the end of the supply pipe in place of the gas
Fig. 1—Install flange to gas control.
6/32 INCH ROUND
SCREWS (1)
CONDUIT
COVER
WARNING
!
FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH
Do not use a gas control set for natural gas on LP gas
or a gas control set for LP gas on natural gas.
VALVE OUTLET
1 DO NOT OVERTIGHTEN SCREWS.
TIGHTEN TO 25 INCH POUNDS.
2
1
FLANGE
9/64 INCH HEX SCREWS (4)
M3098A
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 that using an adapter increases the
overall length of the gas control.
LOCATION
Mount the combination gas control in the appliance
vestibule on the gas manifold. If this is a replacement
application, mount 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 assure 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.
• Assure 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 possible.
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, assure 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. 2.
Install Gas Control
1. Mount the gas control 0-90 degrees, in any direction
including vertically, from the upright position of the gas
control knob.
2. Mount the gas control so gas flow is in the direction
of the arrow on the bottom of the gas control.
3. Thread pipe the amount shown in Table 4 for insertion into gas control. Do not thread pipe too far. Valve
distortion or malfunction may result if the pipe is inserted
too deeply into the gas control. See Fig. 3.
TABLE 4—NPT PIPE THREAD LENGTH IN in.
Maximum Depth
Pipe Can Be
Pipe Thread Pipe Inserted Into
Size This Amount Control
3/8 9/16 3/8
1/2 3/4 1/2
3/4 13/16 3/4
4. Apply a moderate amount of good quality pipe
compound (do not use Teflon tape) to pipe only, leaving
two end threads bare. On LP installations, use compound
resistant to LP gas.
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 an adapter
is used, place wrench on adapter rather than gas control.
Refer to Figs. 4 and 5.
Fig. 2—Sediment trap installation.
DROP
HORIZONTAL
3 INCHES
[76]
MINIMUM
HORIZONTAL
RISER
3 INCHES
[76]
MINIMUM
ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.
1
CAUTION: SHUT OFF THE MAIN GAS SUPPLY BEFORE REMOVING
2
END CAP TO PREVENT GAS FROM FILLING THE WORK AREA. TEST
FOR GAS LEAKAGE WHEN INSTALLATION IS COMPLETE.
PIPED
GAS
SUPPLY
GAS
CONTROL
2
DROP
TUBING
1
GAS
SUPPLY
2
GAS
CONTROL
2
Fig. 3—Use moderate amount of pipe compound.
TWO IMPERFECT
THREADS
THREAD PIPE THE AMOUNT
SHOWN IN TABLE FOR
INSERTION INTO GAS CONTROL
GAS CONTROL
PIPE
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).
Fig. 4—Top view of gas control.
PRESSURE REGULATOR
ADJUSTMENT
(UNDER CAP SCREW)
INLET
PRESSURE TAP
INLET
PILOT ADJUSTMENT
GAS
(UNDER CAP SCREW)
CONTROL
KNOBRED RESET BUTTON
RISER
PIPED
GAS
SUPPLY
3 INCHES
[76]
MINIMUM
WIRING
TERMINALS (3)
OUTLET
PRESSURE
TAP
OUTLET
PILOT OUTLET
GAS
CONTROL
M3077
M3075
M1639C
3 69-0683—1
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