Lochinvar 500, 90 service manual Safety Shutoff Test For Standing Pilot Ignition System

Installation & Service Manual

6Start-up

10.Use the loop end of the wire lighting wand, shipped with the instruction package, to hold the match and reach the pilot. An access slot is provided in the lower front jacket panel, beside the burner, to insert the lighting wand and match to the pilot. Lift the pilot cover (FIG. 6-3) to access the pilot. Push down and hold in the red button on the gas valve. This should start gas flow to the pilot. Continue to hold the red button in for about one (1) minute after the pilot is lit. Release the button and it will pop back up. The pilot should remain lit. If the pilot goes out, repeat steps 5 through 10.

If the red button does not pop up when released, stop and immediately call your gas supplier.

If the pilot will not stay lit after several tries, turn the gas control to “OFF” and call your service technician or gas supplier.

11.Turn the gas control knob on the gas valve counterclockwise to the “ON” position.

12.Turn on all electric power to the appliance.

13.Re-install the lower panel door.

14.Set the thermostat to the desired setting.

15.Re-install the control panel door.

TO TURN OFF GAS TO APPLIANCE

1.Set the thermostat to the OFF position.

2.Turn off all electric power to the appliance if service is to be performed.

3.Turn the gas control knob on the gas valve clockwise to the “OFF” position. Do not force.

￿WARNING Should overheating occur or the gas fail to shut off, turn off the external manual

gas valve to the appliance.

Safety Shutoff Test For Standing Pilot Ignition System

PILOT WITH THERMOCOUPLE PILOT WITH SPARK IGNITION

Figure 6-4_Pilot with Thermocouple and Spark Ignition

1.With the main burners on and firing, unscrew the thermocouple connection from the gas valve (FIG. 6-4) and remove from the fitting.

2.The main gas valve should extinguish the burners immediately after removal of the thermocouple.

3.If burners do not extinguish, immediately follow steps in “To Turn Off Gas To Appliance”.

4.Immediately call a qualified serviceman or installer to repair an ignition system that fails to operate properly and shut down the burners.

5.After successful completion of test, turn the control knob on the gas valve clockwise to the “OFF” position. Do not force.

6.Carefully reconnect the thermocouple to the gas valve.

7.Follow the Lighting Instructions to relight the pilot and establish normal operation.

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