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APPROVALS:
AMERICAN GAS ASSOCIATION DESIGN CERTIFI-
CATE: UP-70-69A.
CANADIAN GAS ASSOCIATION DESIGN CERTIFI-
CATE: UP-70-69A.
AUSTRALIAN GAS ASSOCIATION DESIGN CER-
TIFICATE: Applied for.
DELTA C: Applied for.
WHEN INSTALLING THIS PRODUCT...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous condi-
tion.
2. Check the ratings given in the instructions and on the
product to ensure the product is suitable for your application.
3. Ensure installer is a trained, experienced service tech-
nician.
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 pre-
vent 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 tight-
ened, 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, the gas control should be replaced by 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 protec-
tive seals over inlet and outlet tappings. Do not remove
seals until ready to connect piping.
Installation
Follow the appliance manufacturer's 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
1. Do not use a gas control set for natural gas on LP
gas or a gas control set for LP gas on natural gas.
2. When making conversion, main and pilot burner
orifices MUST be changed to meet appliance
manufacturer specifications.
VR8300A gas controls may be converted from one gas to
another. To convert from natural gas to LP, use the 393691
LP Conversion Kit that is included with the VR8300A gas
control. To convert from LP to natural gas, use the 394588
Natural Gas Conversion Kit (order separately). VR8300C
gas controls cannot be converted.
To convert control from one gas to another:
1. Turn off main gas supply to the appliance.
2. Remove the regulator cap screw and pressure regulator
adjusting screw. See Fig. 1.
Fig. 1—Top view of gas control.
PRESSURE REGULATOR
ADJUSTMENT
(UNDER CAP SCREW)
INLET
PRESSURE TAP
INLET
THERMOCOUPLE
CONNECTION
RED RESET BUTTON
3. Remove the existing spring.
4. Insert the replacement spring with tapered end down.
See Fig. 2.
5. Install the new plastic pressure regulator adjustment
screw so that the top of the screw is flush (level) with the top
of the regulator. Turn the pressure regulator adjustment
screw clockwise
preliminary pressure setting of about 10.o in. wc [2.5 kPa] for
LP regulator and 3.5 in. wc [0.9 kPa] for natural gas regulator.
6. Check the regulator setting either with a manometer or
by clocking the gas meter. Refer to Start-Up and Checkout,
page 4.
7. Install the new cap screw.
8. Mount conversion label on control.
9. Install control and appliance according to appliance
manufacturer's instructions.
2
CONVENIENCE
WIRING
TERMINALS (2)
TERMINALS (2)
(OPTIONAL)
OUTLET
PRESSURE
TAP
OUTLET
PILOT OUTLET
PILOT ADJUSTMENT
GAS
(UNDER CAP SCREW)
CONTROL
KNOB
six complete turns. This provides
M1639A
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