VR8215S,T TRADELINE DIRECT IGNITION COMBINATION GAS CONTROLS
34-00006EF—01
6
• ON: Permits gas to flow into the control body. Under
control of the thermostat and direct ignition module,
gas can flow to the main burners.
NOTE: Controls are shipped with the electronic on-
off switch in the ON position.
Perform Gas Leak Test
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury
or death.
Perform Gas Leak Test every time work is done on
a gas system.
IMPORTANT
Do not spray soap and water solution on the gas
control. This can damage the control. Do not use
an excessive amount of soap and water solution
to perform the gas leak test. Apply only to pipe
thread areas.
Gas Leak Test
1.
Paint pipe connections upstream of the gas control
with rich soap and water solution. Bubbles indicate
a gas leak.
2.
If a leak is detected, tighten the pipe connections.
3.
Light the main burner. Stand clear of the main
burner while lighting to prevent injury caused from
hidden leaks that could cause flashback in the
appliance vestibule.
4.
With the main burner in operation, paint the pipe
joints (including bushings) and the control inlet and
outlet with rich soap and water solution.
5.
If another leak is detected, turn the gas control to
off, tighten the joints and pipe connections.
6.
Replace the part if a leak cannot be stopped.
Turn On System
Push the on-off switch to the ON position.
Turn On Main Burner
Follow appliance manufacturer instructions or turn
thermostat up to call for heat.
Check and Adjust Gas Input
and Burner Ignition
IMPORTANT
1. Do not exceed input rating stamped on
appliance nameplate, or manufacturer’s
recommended burner orifice pressure for size
orifice(s) used. Make certain primary air supply
to main burner is properly adjusted for complete
combustion. Follow appliance manufacturer
instructions.
2. IF CHECKING GAS INPUT BY CLOCKING GAS
METER: Make certain there is no gas flow
through the meter other than to the appliance
being checked. Other appliances must remain
off with the pilots extinguished (or deduct their
consumption from the meter reading). Convert
flow rate to Btuh as described in form 70-2602,
Gas Controls Handbook, and compare to Btuh
input rating on appliance nameplate.
3. IF CHECKING GAS INPUT WITH
MANOMETER: Make sure the gas control is in
the OFF position before removing outlet
pressure tap plug to connect manometer
(pressure gauge). Also move the gas control
switch back to the OFF position when removing
the gauge and replacing the plug. Before
removing inlet pressure tap plug, shut off gas
supply at the manual valve in the gas piping to
the appliance or, for LP, at the tank. Also shut off
gas supply before disconnecting manometer and
replacing plug. Repeat Gas Leak Test at plug
with main burner operating.
NOTE: Check the inlet pressure before adjusting the
pressure regulator.
Standard and Slow-Opening (S and T)
Models
1.
Carefully check the main burner lightoff. Make sure
that the main burner lights smoothly and that all
ports remain lit.
2.
Check the full rate manifold pressure listed on the
appliance nameplate. Gas control full rate outlet
pressure should match this rating.
3.
With main burner operating, check the control flow
rate using the meter clocking method or check
pressure using a manometer connected to the
outlet pressure tap on the control. See Fig. 5.
4.
If necessary, adjust the pressure regulator to match
the appliance rating. See Table 7 for factory-set
nominal outlet pressure and adjustment range.
a. Remove the pressure regulator adjustment cap
screw.
b. Using a screwdriver, turn the inner adjustment
screw (Fig. 5) clockwise
to increase or
counterclockwise
to decrease the gas
pressure to the burner.
c. Always replace the cap screw and tighten firmly
to prevent gas leakage.
5.
If the desired outlet pressure or flow rate cannot be
achieved by adjusting the gas control, check the
gas control inlet pressure using a manometer at the
inlet pressure tap of the gas control. If the inlet
pressure is in the nominal range (see Table 7),
replace the gas control. Otherwise, take the
necessary steps to provide proper gas pressure to
the control.