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Author Topic: thermostat wiring  (Read 2604 times)

sceptre74

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thermostat wiring
« on: January 04, 2014, 01:17:59 PM »
It on my oil furnace. I know that's not what this site is about, but I'm stumped. I have an old 2 wire Honeywell and want to hook up an rth2300b1020 in it's place. There's only two wires coming to the old one and the terminals aren't marked so I have no idea where to put them on the new one. I went to check at the furnace and they aren't labeled there either. Any idea what terminals to hook up to on the new one? Thanks

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RSI

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Re: thermostat wiring
« Reply #1 on: January 04, 2014, 02:39:47 PM »
Use W and RH on the new thermostat. I would try the white wire on the W. If it doesn't work, try reversing them. I think it will work either way though.
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sceptre74

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Re: thermostat wiring
« Reply #2 on: January 04, 2014, 02:55:47 PM »
Thanks. I'll give that a try and let you know what happened
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sceptre74

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Re: thermostat wiring
« Reply #3 on: January 05, 2014, 10:33:28 AM »
Worked perfectly. Thanks RSI
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LittleJohn

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Re: thermostat wiring
« Reply #4 on: January 09, 2014, 10:52:05 AM »
Talk about ancient looking thermostat  :o
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sceptre74

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Re: thermostat wiring
« Reply #5 on: January 09, 2014, 01:23:48 PM »
Lol. They are. House is 26 years old and they are the originals. It was time for an upgrade.
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