old suburban gravity furnace question - Fiberglass RV


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Old 10-22-2017, 06:01 AM   #1
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Name: fred
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old suburban gravity furnace question

model GT 6 3A When the valve beneath the white temperature control knob reacts to the ambient temp, as measure by the thermopile, should the fuel supply to the burner simply shut completely off, until things cool down enough for the thermopile to call for more heat and then the burner gets relit? Or should this valve only reduce or increase the fuel supply with the burner being constantly on, and adjusting itself as required? Thanks
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Old 10-22-2017, 05:16 PM   #2
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Name: Mike
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GT-6

Does this help any?
https://www.manualslib.com/manual/10...3a.html#manual
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Old 10-22-2017, 05:43 PM   #3
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Name: Bill
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Quote:
Originally Posted by fred wark View Post
model GT 6 3A When the valve beneath the white temperature control knob reacts to the ambient temp, as measure by the thermopile, should the fuel supply to the burner simply shut completely off, until things cool down enough for the thermopile to call for more heat and then the burner gets relit? Or should this valve only reduce or increase the fuel supply with the burner being constantly on, and adjusting itself as required? Thanks
I believe the main burner shuts down completely when the set temp is reached. The pilot flame should stay lit so that the burner can relight when the temperature falls again. If the pilot flame doesn’t stay lit the cause is most likely that the thermocouple needs to be replaced.
Hope this helps. It’s the way most older gas heating appliances work - before electronic ignition and power vented appliances were developed.
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Old 10-22-2017, 07:17 PM   #4
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thanks mike and bill
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Old 10-22-2017, 08:45 PM   #5
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Name: Michael
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The pilot light, controlled by the thermocouple, should stay lit all the time to light the burner when necessary. The main burner lights when heat is called for.
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