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2 new Honeywell RTH9580WF thermostats... unknown terminals... help!

2 new Honeywell RTH9580WF thermostats... unknown terminals... help!


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Old 10-16-13, 09:34 AM
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Exclamation 2 new Honeywell RTH9580WF thermostats... unknown terminals... help!

I have purchased 2 new Honeywell RTH9580WF1005 thermostats to replace our current ones at home. I'm a computer tech guy, not a home tech guy... but I'm determined that I can do this myself! I've documented all the current wiring colors and terminal locations in our existing thermostats below, and have watched Honeywell's excellent installation video. I've noted a minor difference in terminal names between our old thermostats and the new 9580's, so I'm reaching out for help before proceeding because I'm not particularly in the mood for blowing our house up today! When all the in-laws visit for Thanksgiving?... maybe. But not today.

Here's what we've got:

- Current Upstairs Thermostat (Hunter brand) -
Red wire goes to R
Yellow to Y1
Green to G
White to O/B
Black to C
*Grey to W2
*Orange to E
(*These are the ones I have a question about. But first, read on...)

- Current Downstairs Thermostat (Robertshaw brand) -
Red wire goes to R
Yellow to Y1
Green to G
White to O
Black to C
*Grey to W2
*Orange to E
(*Same question about these two wires. Look at the new 9580 terminals below to see what I mean...)

- Available Terminals on New 9580 Thermostats -
C
K
RC
R
RC + R (Jumpered)
W-O/B
Y
G
*W2-Aux/E (Both W2 and E are together in ONE terminal)
Y2
L

Soooo... since there are no SEPARATE terminals for W2 and E like on my old thermostats, if I connect the wires as follows on the new 9580 units, would it be correct?:

- Upstairs -
Red to R
Yellow to Y
Green to G
White to W-O/B
Black to C
*BOTH Grey and Orange together to W2-Aux/E

- Downstairs -
Red to R
Yellow to Y
Green to G
White to W-O/B
Black to C
*BOTH Grey and Orange together to W2-Aux/E

Yes or No???

Thanks a million in advance for your help. My wife thanks you. My kids thank you. The fire department thanks you!

Phil
 
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Old 10-16-13, 01:53 PM
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Anyone have any idea?

Oh come on guys, surely somebody has an answer for this. Here's a screenshot from the Honeywell RTH9580WF installation video where it shows the inside of their thermostat.
 
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Old 10-16-13, 06:42 PM
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Worked late today.

Yes, put both Aux and E in your Aux/E terminal connection.
 
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Old 10-17-13, 06:09 AM
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Great, thank you very much!!

And one final thing... the setup questions on the new thermostat ask me what type of heat pump we have. Is ours a 2-stage since our old thermostats had a wire going to the W2 terminal?
 
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Old 10-17-13, 07:47 PM
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Is single stage heat pump with aux heat listed as an option?
 
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Old 10-17-13, 08:20 PM
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No, it's not worded that way. Here are the two choices for heat pump exactly as they are worded on the setup screen:

- 1 stage ("W" wire is connected)
- 2 stage (Both "W" and "W2" wires are connected)
 
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Old 10-17-13, 10:24 PM
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That is strange since W is O/B when the thermostat is configured for heat pump.
Are you sure that we are configured for heat pump operation?
 
 

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