Thermostat wiring question

5619 Views 7 Replies 3 Participants Last post by beer_geek, May 10, 2009

beer_geek

Discussion Starter · May 8, 2009

My HVAC installer is no longer available (long story)

Anyway, I had him rough in a dampered system for the basement that's tied into the first floor Rheem Criterion unit. This way, I'd only have that area serviced when needed. He installed a Honeywell HZ-311 zone controller. He handed me a White-Rodgers 1F78H-144 thermostat to be installed after the drywall went up.

Here's my issue. There are 5 wires attached to the Honeywell(R, C, W, Y, G). The thermostat has W, RH, B, RC, G, O, and Y connectors with RH and RC jumpered.

I'm trying to figure out the wiring. Most of the connections are obvious. I'm wondering about the (C) wire and the jumper wire. Do I connect the (C) to (RC) and remove the jumper or do I not connect it and leave the jumper in place?

The Honeywell manual says to wire per the thermostat instructions.

http://customer.honeywell.com/techlit/pdf/PackedLit/69-2069EFS.pdf

http://www.white-rodgers.com/wrdhom/pdfs/instruction_sheets/0037-6615.pdf

Any assistance will be greatly appreciated.

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beenthere

· #5 · May 10, 2009

He's installing a thermostat for that zone.
Its a new zone system. So it never had a thermostat before.

Thats what I take from his original post.

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beenthere

· #7 · May 10, 2009

Zone Panel------WR Thermostat
---R---------------RC (leave factory jumper to RH)
---W--------------W
---Y---------------Y
---G---------------G

Disconnect the wire from the C terminal at the zone panel and wirenut it off to prevent short circuiting.

That thermostat is battery operated and does not require a Common to work.

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