68-0047—2
8
VR8204; VR4204
STARTUP AND CHECKOUT
!
Startup and Checkout
!
PROPER FLAME
ADJUSTMENT
IGNITION-
SENSOR
M3080A
3/8 TO 1/2 INCH
[10 TO 13 mm]
!
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY OR DEATH
1. Do not force the gas control knob on the appli-
ance. Use only your hand to turn the gas con-
trol knob. Never use any tools.
2. If the knob will not operate by hand, the con-
trol should be replaced by a qualified service
technician.
GAS CONTROL KNOB SETTINGS
Gas control knob settings are as follows:
OFF: Prevents pilot and main gas flow through the control.
ON: Permits gas to flow into the control body. Under
control of the thermostat and intermittent pilot mod-
ule, gas can flow to the pilot and main burners.
NOTE: 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-
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 soap and water solution
any time work is done on a gas system.
GAS LEAK TEST:
1. Paint pipe connections upstream of gas control with
rich soap and water solution. Bubbles indicate gas leak.
2. If leak is detected, tighten pipe connections.
3. Stand clear of main burner while lighting to prevent
injury caused from hidden leaks that could cause flashback
in the appliance vestibule. Light main burner.
4. With main burner in operation, paint pipe joints
(including adapters) and control inlet with rich soap and
water solution.
5. If another leak is detected, tighten adapter screws,
joints, and pipe connections.
6. Replace part if leak cannot be stopped.
ADJUST PILOT FLAME
The pilot flame should envelop 3/8 to 1 /2 in. [10 to 13
mm] of the tip of the igniter-sensor. See Fig. 10.
To adjust pilot flame:
1. Remove pilot adjustment cover screw. See Fig. 5.
2. Turn inner adjustment screw clockwise
to de-
crease or counterclockwise
to increase pilot flame.
3. Always replace cover screw after adjustment. Tighten
firmly to prevent gas leakage.
Fig. 10—Proper flame adjustment.
CHECK SAFETY SHUTDOWN PERFORMANCE
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY OR DEATH
Perform the safety shutdown test every time work
is done on a gas system.
NOTE: Read steps 1-7 below before starting and compare
to the safety shutdown or safety lockout tests recom-
mended for the intermittent pilot (IP) module. Where
they differ, use the procedure recommended for the
module.
1. Turn off gas supply.
2. Set thermostat or controller above room temperature
to call for heat.
3. Watch for spark at pilot burner either immediately or
after prepurge. See IP module specifications.
4. If module has timed ignition, time length of spark
operation. See IP module specifications.
5. After the module locks out, open manual gas cock
and make sure no gas is flowing to pilot or main burner.
With modules that continue spark until pilot lights or
system is shut down manually, pilot should light when
manual gas cock is opened.
6. Set thermostat below room temperature and wait one
minute.
7. Operate system through one complete cycle to make
sure all controls operate properly.
Содержание TRADELINE VR8204A
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