Trane GGAA, Installation, Operation And Maintenance Manual

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MUA-SVX005B-EN 25
Figure 10. Belt Tension Guide
Lighting
(Refer to Indoor Duct Furnace Manual for all heating functions - general comments are as
follows.) Purge the gas line to the unit of air before attempting to light the pilot. Check for gas
leaks.
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This unit is equipped with an intermittent ignition system. A lighting instruction label is attached
to the unit. To set the intermittent ignition system into operation, proceed as follows:
1. Turn on the gas valve(s) main manual valve.
2. Turn on electrical power. The unit is now under thermostat control.
3. Set thermostat to highest level. This will initiate the sequence of operation detailed in the Gas
Control System section. Check main burners for operation.
4. Set thermostat to lowest level. This will interrupt power to the ignition control and shut off
gas. Confirm pilot and main burners have been extinguished.
5. Set the thermostat to the desired setting.
For complete unit shutdown, proceed as follows:
1. Turn off the gas valve(s) main manual valve.
2. Set thermostat to lowest setting.
3. Shut off all electric power.
Gas Input Adjustment
When shipped from the factory, all units are equipped for the average heat content of the gas
which is stamped on the unit rating plate.
O Op pe erra attiio on n