Honeywell VR8300 Installation Manual
VR8300/VR8301
Continuous Pilot Combination
Gas Control
Application
These continuous pilot gas controls are used in gas-fired
appliances with capacities up to 200 cu ft/hour at 1 in. wc
pressure drop [5.7 cu m/hour at 0.25 kPa] on natural gas.
They include a manual valve, safety shutoff, single automatic operators, and a pressure regulator. See Table 3 for
temperature ranges and regulator types.
TABLE 1: CAPACITY OF VR8300/VR8301
Size
(Inlet x Outlet)
1/2 x 1/2 180 cu ft/hr
1/2 x 3/4 190 cu ft/hr
3/4 x 3/4 200 cu ft/hr
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 gasses.
TABLE 2—GAS CAPACITY
CONVERSION FACTORS.
Gas
Manufactured 0.60 0.516
Mixed 0.70 0.765
Propane 1.53 1.62
Capacity (at 1 in. wc
pressure drop)
[5.1 cu m/hr]
[5.4 cu m/hr]
[5.7 cu m/hr]
Specific
Gravity
a
Multiply Listed
Capacity By
BODY PATTERN: Straight-through body pattern.
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 inch straight
and angle connections. Refer to Table 4.
ELECTRICAL RATINGS:
Voltage and Frequency: 24 Vac, 50/60 Hz.
Current Draw: 0.70A.
CAPACITY: See Table 1.
Minimum
Regulated Capacity
30 cu ft/hr
[0.8 cu m/hr]
30 cu ft/hr
[0.8 cu m/hr]
30 cu ft/hr
[0.8 cu m/hr]
TABLE 4—FLANGE PART NUMBERS.
Inlet/Outlet
Pipe Size
1/2 inch NPT Straight 394599-6 393690-16
3/4 inch NPT Straight 394599-4 393690-14
Flange
Type
Elbow 394599-3 393690-13
Elbow 394599-5 393690-15
Maximum
Regulated Capacity
225 cu ft/hr
[6.4 cu m/hr]
290 cu ft/hr
[8.2 cu m/hr]
300 cu ft/hr
[8.5 cu m/hr]
Part Number
Without
Hex
Wrench
With
Hex
Wrench
NOTE: Flange kits include one flange with attached O-ring
and fan mounting screw.
TABLE 3—TEMPERATURE RANGES AND REGULATOR TYPES.
Model Number Ambient Temperature Range Regulator Type
VR8300A 0° F to 175° F [-18° C to +79° C] Standard-opening
VR8300C 0° F to 175° F [-18° C to +79° C] Step-opening
VR8300H 0° F to 175° F [-18° C to +79° C] Slow-opening
VR8300K -40° F to 175° F [-40° C to +79° C] Slow-opening
VR8300M -40° F to 175° F [-40° C to +79° C] Standard-opening
VR8300P -40° F to 175° F [-40° C to +79° C] Step-opening
VR8301 0° F to 175° F [-18° C to 79° C] Standard-opening
J.H. • Rev. 9-94 • ©Honeywell Inc. 1994 • Form Number 69-0624—2
1 69-0624—2
APPROVALS:
American Gas Association Design Certificate: UP-70-69A.
Canadian Gas Association Design Certificate: UP-70-69A.
Australian Gas Association Certificate: Applied for.
Delta C: Applied for.
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 the pilot tubing at the gas control or
pilot burner after compression fitting has been
tightened, or gas leakage at the connection may
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, to replace the gas control, contact a qualified service technician. Force or attempted repair
may result in fire or explosion.
CAUTION
Never apply a jumper across or short the valve coil
terminals. This may burn out the heat anticipator in
the thermostat.
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 manufacturers instructions if avail-
able; 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 use a gas control set for natural gas on LP
gas or a gas control set for LP gas on natural gas.
To convert a gas control from natural gas to LP gas or from
LP gas to natural gas, contact your Honeywell representative.
Standard- or slow-opening gas controls are converted 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
Install adapters on the gas control 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 fits in the flange groove. If the O-
ring is not attached or is missing, do not use flange.
4. With O-ring facing gas control, align the screw holes
on the 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 the seal over the 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 the bushing until tight.
Complete 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 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 instances 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.
69-0624—2 2
Fig. 1—Install flange to gas control.
9/64 INCH HEX
SCREWS (4)
GAS CONTROL OUTLET
FLANGE
1 DO NOT OVERTIGHTEN SCREWS.
TIGHTEN TO 25 INCH POUNDS.
1
M3087
CHOOSE GAS CONTROL LOCATION
Do not locate the gas control where it may be affected by
steam cleaning, high humidity, dripping water, corrosive
chemicals, dust or grease accumulation, or excessive heat.
To assure proper operation, follow these guidelines:
• Locate gas control in a well-ventilated area.
• Mount the 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 the gas control if 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 likely.
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 (ANSl 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
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 5 for insertion
into gas control.
IMPORTANT: Do not thread pipe too far. Valve distortion
or malfunction may result if the pipe is inserted too
deeply into the gas control. Refer to Fig. 3.
TABLE 5—NPT PIPE THREAD LENGTH IN IN.
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
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 on gas control. See
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 4 FOR
INSERTION INTO GAS CONTROL
GAS CONTROL
PIPE
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).
RISER
PIPED
GAS
SUPPLY
3 INCHES
[76]
MINIMUM
GAS
CONTROL
M3077
M3075A
3 69-0624—2
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