Replacing Honeywell T8034c

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Old 04-19-08, 02:15 PM
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Replacing Honeywell T8034c

I am in the process of replacing an old Honeywell T8034c with a Hunter 44860. I am having difficulty with determining which wire goes to what terminal.

The current wiring looks like this on Honeywell unit.

Red wire -> R terminal
White wire -> W terminal
Green wire -> G terminal
Yellow wire -> Y terminal
Y terminal jumpered to 1 terminal

I spoke to Hunter support and they told me to hook it up like this.

R -> RH
W -> W1
Y -> Y1
G -> G
RH jumpered to RC

When I hooked it up like this the AC and fan did not work. I was skeptical about this because of the Y-1 jumper.

Anyone have any ideas on this? I can take pictures if it will help clarify.

Thanks,
Chris
 
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Old 04-19-08, 06:49 PM
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I just wanted to point out that your old thermostat has a mercury switch in it, and should be recycled/disposed of properly. A household hazardous waste collection, or a HVAC contractor or wholesaler may be able to take the thermostat for you. (at a minimum, you should at least protect yourself/family from exposure to mercury if the switch were to break).
 
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Old 04-19-08, 09:37 PM
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I'm fully aware of the mercury. As soon as I get the new unit working I'm taking the old unit to be recycled properly. I'm totally paranoid about mercury.

Originally Posted by Strategery View Post
I just wanted to point out that your old thermostat has a mercury switch in it, and should be recycled/disposed of properly. A household hazardous waste collection, or a HVAC contractor or wholesaler may be able to take the thermostat for you. (at a minimum, you should at least protect yourself/family from exposure to mercury if the switch were to break).
 
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Old 04-20-08, 03:30 AM
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Note to the OP i moved over to the HVAC forum. those guys can able help you a bit with the set up you are describing so i feel it will help you a bit with this one.

thanks for being understand this one

Merci,Marc
 

Last edited by GregH; 04-20-08 at 06:06 AM. Reason: fix the words up
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Old 04-22-08, 07:59 PM
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I got a response back from Honeywell and this is all they could tell me.

"R Power for heating
W Heat Relay
Y Compressor Relay
G Fan Relay

When the 1 terminal is jumped to Y, the fan is controlled by the
system. This is the setting used for conventional systems."

Anyone else have any ideas?
 
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Old 04-22-08, 09:06 PM
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Smile

Problem solved! It turns out that if the furnace is unplugged the ac doesn't turn on.
 
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