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VR8300A CONTINUOUS PILOT COMBINATION GAS CONTROL
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.
Follow these warnings exactly:
1. Disconnect power supply before installing or
servicing.
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, 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 gas control knob. Force or
attempted repair may result in fire or explo-
sion. 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 does not operate by hand, the
gas control should be replaced by a qualified
service technician.
CAUTION
Equipment Hazard.
Improper installation can burn out thermostat
heat anticipator.
Do not apply a jumper across or short the valve
coil terminals.
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.
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 the conversion, the main and
pilot burner orifices MUST be changed to
meet the specifications of the appliance
manufacturer.
Standard or slow-opening gas controls can 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). Step-opening gas controls cannot be con-
verted.
To convert the control from one gas to another:
1. Turn off the main gas supply to the appliance.
2. Remove the regulator cap screw and pressure
regulator adjusting screw. See Fig. 5.
3. Remove the existing spring.
4. Insert the replacement spring with the tapered end
down. See Fig. 1.
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 six complete
turns. This provides a preliminary pressure setting of
about 10.0 in. wc (2.5 kPA) for an LP regulator and a
3.5 in. wc (0.9 kPA) for a natural gas regulator.
6. Check the regulator setting with a manometer or by
clocking the gas meter. See the Startup and
Checkout section.
7. Install the new cap screw.
8. Mount the conversion label on the control.
9. Install the control and the appliance according to the
appliance manufacturer instructions.
Install Adapters to Gas Control
If installing adapters on the gas control, mount them
as follows:
Flanges:
1. Choose the appropriate flange for your application.
2. Remove the seal over the gas control inlet or outlet.
3. Ensure the O-ring is fitted into the groove of the
flange. 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. 2. Tighten the screws to 25 in. lb
of torque to provide a gas-tight seal.