Posted by MeAnthony on November 04, 2007 at 18:43:57 from (65.73.153.59):
A friend of mine has this furnace, runs off Natural gas now. I was told by another HVAC guy that is an old coal burner(Peninsular 10-22D). He figures it's at least 50 years old. Anyway, my point is, she's having trouble(the pilot light stays on, but the main burner doesn't come on) and doesn't have the money to replace it right now. Where can I get some information on these old conversion kits, and how they are supposed to work? This one is a: Janitrol Gas Conversion Burner Model - JD05 Serial - 1252A0268 with a Combination Regulator & Diaphragm Gas Valve Type - V886AY2DRI on it.
HVAC guy told me to jumper across terminals R and W in the thermostat to see if thermostat was the problem. This made no difference, so I'm guessing that isn't the problem.
HVAC guy told me to jumper across the two terminals on the hi-temp limit switch; made no difference, so I'm guessing this isn't the problem either.
Unfortunately, this still leaves me where I was before. The signal from the thermostat is being lost somewhere. The wiring diagram is still there, and mostly legible. However, without knowing what steps this thing goes through in the process of turning on, how do I know where to start looking for the cause?
I can get it to come on for 1 cycle, till the thermostat turns it off, but that's usually all it will do. There's a button on the regulator valve/diaphragm that you push to close the contacts on a solenoid(I'm guessing this contraption is similar, at least in operation if not design, to a fuel shutoff solenoid?). Doing this will turn on the gas to the main burner, thus giving heat until the thermostat shuts it off.
Basically, I'm trying to make this ancient piece of heating equipment operate safely/properly for one more season. Then she can afford to replace it. Surely someone out there knows something about these?
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