MANUAL RESET HIGH LIMIT SWITCH
This heater has one high limit switch; located inside the solid door end on the heater chamber.
The high limit switches can be easily identified by a red reset button in the center of the switch.
Function
If the heater overheats, the high limit switch can trip, opening the electrcial circuit to the gas control valve.
Overheating is generally caused low voltage, blocking the heater’s air inlet, or excessive gas pressure.
Resetting
If the high limit switch trips; remove the red cap and firmly press the reset button in the middle of the switch.
Then, shut the heater off and turn it back on. Determine the cause of the limit tripping.
Testing
To ensure proper function of this critcal safety component, test the switch annually, typically when the heater
is given a thorough cleaning.
1. Remove the high limit switch from the heater.
2. With a pliers hold the switch by one of its mounting legs, apply a small, soft flame only to the sensing
portion on the back of the switch. Be careful not to melt the plastic housing of the switch when conducting
this test.
3. Within a minute, you should hear a click coming from the switch, indicating the contacts of the switch have
opened.
4. Allow the switch cool down for about a minute. Remove the red cap and firmly press the reset button on the
switch.
High Limit
WARNING: Fire Hazard
• Do not operate the heater with the high limit switch bypassed.
• Operating the heater with the high limit switch bypassed or jumper-ed may lead to
overheating, possibly resulting in a fire, with subsequent damage to the heater or
property damage.
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Страница 16: ...SYSTEM COMPONENTS LP Gas Hose Assembly Fresh Air Fan Module 2 way LP Tank Manifold 15 Interconnect Cable ...
Страница 17: ...16 GAS TRAIN COMPONENTS ITEM DESCRIPTION 3 GAS CONTROL VALVE 4 CSST TUBE 5 IGNITER CABLE 6 IGNITER 3 4 5 6 ...
Страница 36: ...35 FRESH AIR MODULE WIRING DIAGRAM ...
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