4. Remove lower front panel.
5. Turn gas control knob clockwise to OFF position. (See Fig. 19.)
6. Wait 5 minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow "B" in safety information
in For Your Safety Read Before Operating section.
7. Find pilot. Follow metal tube from gas control. The pilot is between 2 burner tubes. (See Fig. 20.)
8. Turn knob on gas control counterclockwise to PILOT position. (See Fig. 19.)
9. Push down and hold red reset button while you light pilot burner with a match. After about 1 minute, release reset button. Pilot should
remain lit. If it goes out, turn gas control knob clockwise to OFF position. To relight, repeat items 5-9.
• If button does not pop up when released, stop and immediately call your service technician or gas supplier.
• If pilot will not stay lit after several tries, turn gas control knob to OFF position and call your service technician or gas supplier.
10. After pilot remains lit when red reset button is released, turn gas control knob counterclockwise to ON position. (See Fig. 19.)
11. Replace lower front panel.
12. Turn on all electrical power to appliance.
13. Set thermostat to desired setting.
B.
To Turn Off Gas To Appliance
1. Set thermostat to lowest setting.
2. Turn off all electrical power to appliance if service is to be performed.
3. Turn gas control knob clockwise to OFF position. (See Fig. 19.) Do not force.
OPERATING BOILER
PROCEDURE 1—HOW A STEAM SYSTEM OPERATES
The water in boiler is heated until it reaches boiling point. As water boils, it turns into steam. The steam rises from top of water through supply
main to radiation units. As it passes through radiators, it releases its heat and condenses into water. The water returns to boiler through return main.
Most residential systems operate at less than 1 lb steam pressure.
PROCEDURE 2—FILLING SYSTEM WITH WATER
On steam heating systems, boiler is partially filled with water. It is very important to proper operation of entire system that boiler be filled to proper
level. The correct water level is about halfway up glass water level gauge as marked on boiler jacket. To fill:
1. Close boiler drain valve.
2. Open valves at top and bottom of glass water level gauge. Also open drain valve at bottom of gauge.
3. Open fill valve and allow water to run into boiler.
CAUTION: Never run water into a hot, empty boiler or thermal shock may crack boiler components (sections).
Fig. 19—VR8200A/VR8300A Continuous Pilot Gas Valve
A95521
GAS CONTROL
KNOB SHOWN
IN "ON" POSITION
RED RESET
BUTTON
THERMOCOUPLE
CONNECTION
PILOT
ADJUSTMENT
(UNDER CAP
SCREW)
GAS
INLET
INLET
PRESSURE
TAP
WIRING
TERMINALS (2)
CONVENIENCE
TERMINALS (2)
(OPTIONAL)
OUTLET
PRESSURE
TAP
GAS
OUTLET
PILOT
OUTLET
PILOT
OFF
ON
PRESSURE REGULATOR
ADJUSTMENT
(UNDER CAP SCREW)
Fig. 20—Lighting Pilot
A99181
MATCH HOLDER
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