V8205, VR8205 DIRECT IGNITION COMBINATION GAS CONTROLS
5
69-0329—05
Fig. 7. Wiring connections for 24 volt control in S89
direct ignition system.
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 replace
the gas control.
Gas Control Knob Settings
The gas control knob settings are as follows:
OFF: Prevents gas flow to main burner.
ON: Permits main burner gas flow. 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
knob 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 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. Bub-
bles indicate a gas leak.
2.
If a gas leak is detected, tighten the pipe connec-
tion.
3.
Stand clear while lighting main burner to prevent
injury caused from hidden gas leaks that could
cause flashback 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 leak is detected, tighten adapter screws,
joints, and pipe connections.
6.
Replace the part if gas leak can not be stopped.
Turn On System
Rotate the gas control knob counterclockwise
to
ON.
Turn On Main Burner
Follow instructions provided by appliance manufacturer
or turn up thermostat to call for heat.
Check and Adjust Gas Input to Main Burner
CAUTION
1. Do not exceed the input rating stamped on the
appliance nameplate, or manufacturer
recommended burner orifice pressure for the
size orifice(s) used. Make certain the primary
air supply to the main burner is properly
adjusted for complete combustion (refer to the
appliance manufacturer instructions).
2. IF CHECKING GAS INPUT BY CLOCKING THE
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 their pilots extinguished (or their
consumption must be deducted from the meter
reading). Convert flow rate to Btuh as
described in Gas Controls Handbook, form 70-
2602, and compare to Btuh input rating on
appliance nameplate.
3. IF CHECKING GAS INPUT WITH A MANOMETER
(PRESSURE GAUGE): Be sure gas control is in
OFF position before removing outlet pressure
tap plug to connect manometer (pressure
gauge). Also turn gas control knob back to OFF
when removing gauge and replacing 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.
Standard Pressure Regulator
1.
Check the manifold pressure listed on the appli-
ance nameplate. Gas control outlet pressure
should match the nameplate.
2.
With the main burner operating, check the gas con-
trol flow rate using the meter clocking method or
pressure using a manometer connected to the out-
let pressure tap on the gas control. See Fig. 4.
WHITE
BLUE
BLACK
BLUE
HOT
SURFACE
IGNITER-
SENSOR
VALVE
VALVE (GND)
24V
TH-W
24V (GND)
GND (BURNER)
S89C,G,J/S890C,G,J
HOT SURFACE
IGNITION CONTROL
L2
HSI
L1
HSI
LIMIT
CONTROLLER
BURNER
GROUND
THERMOSTAT
OR CONTROLLER
DUAL VALVE
COMBINATION
GAS CONTROL
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED. MAKE SURE L1 AND L2 ARE NOT
REVERSED; THIS WOULD PREVENT FLAME DETECTION.
ALTERNATE LIMIT CONTROLLER LOCATION.
SEN TERMINAL AND Q354 FLAME SENSOR ON D MODELS ONLY.
M9047
MV
MV
L1
(HOT)
L2
VENT
DAMPER PLUG
1
2
1
2
3
3
SEN
Q354 FLAME
SENSOR
