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Author Topic: Older oil hot air furnace thermostat wiring  (Read 10490 times)

RSI

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Re: Older oil hot air furnace thermostat wiring
« Reply #45 on: October 28, 2015, 12:20:37 PM »
What type of gauges do you have? If they are in wells, pull out out and put the probe in there and see how it compares.
If that isn't an option, get some aluminum foil tape and tape it tightly to a pipe. Pex is ok if you don't have any copper. Run the tape all the way around the pipe and probe. Then insulate around the section of pipe and probe. Make sure there are no openings in the insulation that air can get in.
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