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Fig. 7—VR8404 wiring connections in intermittent ignition system with S8600.
VR8404
COMBINATION
GAS CONTROL
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
ALTERNATE LIMIT CONTROLLER LOCATION.
2
3
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.
4
REMOVE PLUG ONLY IF USING VENT DAMPER. FUSE BLOWS ON STARTUP WHEN PLUGIS REMOVED AND VENT DAMPER
WIRING HARNESS IS INSTALLED; THEN MODULE WILL OPERATE ONLY WHEN VENT DAMPER IS CONNECTED.
Startup and Checkout
!
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH.
1. Do not force the gas control knobs. Use only
your hand to turn the gas control knobs. Never
use any tools.
2. If the gas control knobs will not operate by
hand, call a qualified service technician to
replace the entire gas control.
3. Both knobs must be in the same position for
operation or shutoff.
GAS CONTROL KNOBS SETTINGS
The gas control knobs have 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, gas can flow to the pilot and main burner.
GND
(BURNER)
MV MV/PV PV
MV
PV/MV
PV
QUICK
CONNECTS
IGNITER
SENSOR
PILOT
BURNER
GROUND
S8610F,H
4
VENT
24V
DAMPER
GND
24V TH-W
PLUG
WIRING
HARNESS
THERMOSTAT
2
LIMIT
3
1
CONTROLLER
L1
(HOT)
L2
NOTE: Gas controls are shipped with the gas control
knobs in the ON position.
PERFORM GAS LEAK TEST
!
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY, OR DEATH.
Check for gas leaks with a 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 con-
trol 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. Turn on the entire gas
control and light the main burner as described below.
5
SPARK
D80D VENT
DAMPER
M8053
69-0814—1
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