SECTION 12: OPERATION AND MAINTENANCE
DANGER |
| WARNING |
| |
Electrical Shock Hazard | Explosion Hazard | Burn Hazard | Cut/Pinch Hazard | |
Disconnect electric | Turn off gas supply to | Allow heater to cool | Wear protective gear | |
heater before service. | before service. | during installation, | ||
before service. | ||||
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| operation and service. | ||
Heater must be |
| Tubing may still be hot | ||
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connected to a properly |
| after operation. | Edges are sharp. | |
grounded electrical |
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source. |
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Failure to follow these instructions can result in death, electric shock, injury or property damage.
The heater is equipped with a dual direct spark ignition system.
12.1 Sequence of Operation
Turn OFF electric power to heater.
Turn OFF manual gas valve in the heater supply line.
12.3 To Start Heater
1.Turn the thermostat up, the blower motor will energize.
2.When the motor approaches nominal running RPM, the pressure switches will close and acti- vate the ignition module.
3.After a 45 second purge period, the ignition module then opens the gas valve and energizes both spark igniters. The light will be illuminated at any time the gas valve is energized.
4.When both flames are established, the sparking sequence ceases.
5.If both flames are not established during the ignition sequence, the ignition module closes the gas valve and purge begins. The module will try two additional times for ignition with purge between trials. If ignition is not established dur- ing either of these trials, the module will lock out.
6.After lock out has occurred, the ignition module must be
7.When the thermostat is satisfied, all power to the heater is shut off.
12.2 To Shut Off Heater
Set thermostat to lowest setting.
Turn gas valve and electric power OFF and wait five minutes for unburned gases to vent from heater. Turn ON main gas valve.
Turn ON electric power.
Set thermostat to desired temperature. Burner should light automatically.
12.4Pre-Season Maintenance and Annual Inspection
To ensure your safety and years of
Turn off gas and electric supplies before performing service or maintenance. Allow heater to cool before servicing.
Before every heating season, a contractor qualified in the installation and service of
For best performance, the gas, electrical, thermostat connections, tubing, venting, suspensions and overall heater condition should be thoroughly inspected.
NOTE: Gas flow and burner ignition are among the first things that should be inspected. Please see Page 51, Section 12.5 for suggested items to inspect.
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