Start-Up And Checkout; Gas Control Knob; Turn On System; Perform Gas Leak Test - Honeywell VR8304 Manual

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FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH
1. Do not force the gas control knob. Use only
your hand to turn the gas control knob. Never
use any tools.
2. If the gas control knob will not operate by
hand, the gas control should be replaced by a
qualified service technician.
GAS CONTROL KNOB SEmNGS
The gas control knob has two settings:
OFF-prevents pilot and main burner gas flow.
ON-permits gas to flow into the control body. Under
control of the thermostat and intermittent pilot
module, pilot and main burner gas flow is per­
mitted.
NOTE: Gas controls are shipped with the gas control knob
in the ON position.

TURN ON SYSTEM

Rotate the gas control knob counterclockwise (\ to
ON.
TURN ON MAIN BURNER
Follow instructions provided by appliance manufac­
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turer or turn thermostat up to call for heat.

PERFORM GAS LEAK TEST

FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH
Check for gas leaks with rich soap and water
solution any time work Is done on a gas control.
GAS LEAK TEST
1. Paint all pipe connections upstream of the gas control
with a rich soap and water solution. Bubbles indicate a gas
leak.
2. If a gas leak is detected, tighten the pipe connection.
3. Stand clear while lighting main burner to prevent
injury caused from hidden gas leaks which could cause
flashback in the appliance vestibule. Light the main burner.
4. With the main burner in operation, paint all pipe joints
(including adapters) and gas control inlet and outlet with
rich soap and water solution.
5. If another gas leak is detected, tighten adapter screws,
joints, and pipe connections.
6. Replace the part if gas leak can not be stopped.
ADJUST THE PILOT BURNER FLAME
The pilot flame should envelop 3/8 to 1 /2 inch (1 Oto 13
millimeters] of the igniter-sensor tip. Refer to Fig. 10. To
adjust the pilot flame:
1. Remove the pilot adjustment cover screw. Refer to
Fig. 5.
2. Turn the inner adjustment screw clockwise ,'\ to
decrease or counterclockwise
flame.
3. Always replace the cover screw after adjustment and
tighten firmly to ensure proper operation.
3/8 TO 1/2 INCH
[10 TO 13 MILLIMETRES)
IGNITER-SENSOR
FIG. 10-PROPER FLAME ADJUSTMENT.
CHECK AND ADJUST GAS INPUT TO MAIN BURNER
CAUTION
1. Do not exceed the input rating stamped on the
appliance nameplate, or manufacturer's recom­
mended burner orifice pressure for the size
orifice(s) used. Ensure the main burner primary
air supply is properly adjusted for complete com­
bustion (refer to the appliance manufacturer's
instructions).
2. IF CHECKING GAS INPUT BY CLOCKING THE
GAS METER:
• Ensure that the only gas flow through the
meter is that of the appliance being tested.
• Ensure that other appliances are turned off
and that their pilot burners are extinguished
(or deduct their gas consumptions from the
meter reading).
• Convert the flow rate to Btuh as described in
the Gas Controls Handbook (form number
70-2602) and compare to the Btuh input
rating on the appliance nameplate.
3. IF CHECKING GAS INPUT WITH A MANOM­
ETER (PRESSURE GAUGE):
• Ensure the gas control knob is in the PILOT
position before removing the outlet pres­
sure tap plug to connect the manometer.
• Turn the gas control knob back to PILOT
when removing the manometer and re­
placing outlet pressure tap plug.
• Shut off the gas supply at the appliance
service valve or, for LP gas, at the gas tank
before removing outlet the pressure tap
plug and before disconnecting the ma­
nometer and replacing the outlet pres­
sure tap plug.
• Perform the Gas Leak Test at the inlet
pressure tap plug.
Standard-Opening and Slow-Opening Pressure Regu­
lator
1. The gas control outlet pressure should match the
manifold pressure listed on the appliance nameplate.
2. With the main burner operating, check the gas control
flow rate using the meter clocking method or check the gas
pressure using a manometer connected to the gas control
outlet pressure tap. Refer to Fig. 5.
8
n
to increase the pilot