For Models with Automatic Gas Valves
Lighting Instructions
1.Close all gas valves. Turn off electrical power sup- ply. Wait five (5) minutes.
2.Open manual pilot valve. Turn on electrical power. Pilot is automatically lighted.
PILOT |
|
VALVE CONTROL |
|
SHOWN IN THE | MAIN GAS |
"ON" POSITION | VALVE SHOWN IN |
| THE "ON" |
| POSITION |
GAS INLET |
|
Fig. 38: Shut Off Valve
3.Open main gas valve.
4.Set temperature controls to desired temperature.
To Shut Down
Close all manual gas valves. Turn off electrical power.
Fig. 39: Ignition Module
After Start-Up
Standing Pilot Checkout
Procedure
1.Turn on pilot gas supply, light pilot, and check pilot tubing connections for leakage. With main burner in operation, paint tubing connections with a rich
soap and water solution. Bubbles indicate a gas leak.
2.Adjust pilot to obtain a normal flame enveloping 3/8 to 1/2 inch [9.5 to 12.5 mm] of the thermocou- ple or generator tip.
3.Place system in operation, and:
a.Check for satisfactory ignition of main burner.
b.Make certain the pilotstat "holds in", and that shutdown occurs within
c.Observe operation for at least three cycles to be sure the system is functioning normally.
Pilot with
Burner Flame
Standing Pilot
Fig. 40: Pilot Flame Should Engulf Thermocouple
Intermittent Pilot System Checkout
(S8600)
1.Turn on power to the ignition systems and turn gas supply off.
2.Check ignition module as follows:
a.Set the thermostat or controller above room temperature to call for heat.
b.Watch for continuous spark at the pilot burner.
c.Time the spark operation. Time must be with- in the lockout timing period (15 or 90 seconds).
d.Turn thermostat down to end call for heat and wait 60 seconds on lockout models before beginning step 3.
3.Turn on gas supply.
4.Set thermostat or controller above room tempera- ture to call for heat.
5.Systems should start as follows:
a.Spark will turn on and pilot gas valve will open
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