Advertisement
Fig. 7—VR8405 wiring connection in S89C Direct Ignition System.
VR8405
COMBINATION
GAS CONTROL
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 re-
place 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 main burner gas flow.
ON: Permits gas to flow into the control body. Under
control of the thermostat and direct ignition module,
gas can flow to the main burner.
NOTE: Gas controls are shipped with the gas control knobs
in the ON position.
S89/S890 HOT SURFACE
QUICK
IGNITER CONTROL
CONNECTS
MVPV
MVPV
VALVE
VALVE (GND)
24V
24V (GND)
BURNER
GROUND
THERMOSTAT OR
2
CONTROLLER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
MAKE SURE L1 AND L2 ARE NOT REVERSED. THIS WOULD PREVENT FLAME DETECTION.
2
ALTERNATE LIMIT CONTROLLER LOCATION
3
SEN TERMINAL AND Q354 FLAME SENSOR ON D MODELS ONLY.
INSTALLATION • STARTUP AND CHECKOUT
L2
HSI
L1
HSI
SEN
3
3
LIMIT
CONTROLLER
Startup and Checkout
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 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. Turn on the entire gas
control and light the main burner as described below.
4. With the main burner in operation, paint all pipe
joints and gas control inlet and outlet with a rich soap and
water solution.
5. If another gas leak is detected, tighten pipe connections.
6. Replace the part if gas leak cannot be stopped.
7
HOT SURFACE
IGNITER/SENSOR
Q354 FLAME
SENSOR
L1
1
(HOT)
L2
M8054
68-0150
VR8405
Advertisement
