Advertisement
2. When the gas control is installed external to the
appliance, install the conduit cover on the conduit fitting.
Do not secure the conduit cover at this time.
3. Connect control circuit to gas control terminals. See
Figs. 4 and 7.
NOTE: Use leadwires with insulated terminals.
Fig. 7—VR4304 wiring connections in intermittent ignition system.
120V THERMOSTAT
OR CONTROLLER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2
ALTERNATE LIMIT CONTROLLER LOCATION.
Startup and Checkout
WARNING
!
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, call a qualified service technician to re-
place the gas control.
GAS CONTROL KNOB SETTINGS
The gas control knob settings are as follows:
OFF: Prevents pilot and main burner gas flow.
ON: Permits gas to flow into the control body. Under con-
trol of the thermostat and intermittent pilot module,
gas can flow to the pilot and main burner.
NOTE: Gas controls are shipped with the gas control knob
in the ON position.
TURN ON SYSTEM
Rotate the gas control knob counterclockwise
ON.
AIR PROVING
SWITCH
COMBUSTION
AIR BLOWER
MOTOR
1
L1
L2
(HOT)
4. Make sure the conduit cover is in position and se-
cured to the gas valve with the screw provided. See Fig. 1.
5. Adjust thermostat heat anticipator as instructed in
appliance manual (i.e., usually 0.1A).
2
IGNITION MODULE
MV
120V (GND)
120V (2)
PV/MV
PV
GND
(BURNER)
Q345, Q346, Q348, Q362,
Q381 PILOT BURNER/
IGNITER-SENSOR
TURN ON MAIN BURNER
Follow instructions provided by appliance manufac-
turer or turn up thermostat to call for heat.
PERFORM GAS LEAK TEST
!
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH
Check for gas leaks with rich soap and water
solution anytime 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 that could cause flash-
back in the appliance vestibule. Light the main burner.
4. With the main burner in operation, paint all pipe
joints (including flanges) and gas control inlet and outlet
with rich soap and water solution.
5. If another gas leak is detected, tighten flange screws,
joints, and pipe connections.
to
6. Replace the part if gas leak can not be stopped.
5
L1
(HOT)
1
LIMIT CONTROLLER
L2
VR4304
GAS CONTROL
TERMINALS
PV
PV/MV
MV
PILOT
BURNER
GROUND
PILOT GAS
SUPPLY
M3091
69-0695—2
Advertisement
