Changing from T8400C to T8011R Tstat - http://www.hvacmechanic.com/ Forums
Original message
| DSBATCH
 |  "Changing from T8400C to T8011R Tstat"
, posted Mon 14 Jul 20:54  
My current Tstat (8400C) has the following wires connected...
Wire Color ---- Terminal
White W
Yellow Y
Green G
Red R
orange, blue, black and brown wires are present at the Tstat, but unused. I am changing to the T8011R which has the following terminals: R,W2,L,B,O,W1,G,C,Y,E.....W1 and Y are factory jumped.
I have 2 zone system controlled by a Honewell TempTroll interface mounted near the air handler in the attic.
Any ideas on the correct wiring for the T8011R? Thanks in advance.
DSB
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Replies:
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| Houston204
| "Re(1):Changing from T8400C to T8011R Tstat" , posted Mon 14 Jul 21:03
Your new stat is a heat pump thermostat. If you purchased it, I suggest returning it for a conventional stat since you do not have a heatpump.
The T8011R Heat Pump Thermostat provides 24 Vac
control of a two-stage heating and one-stage cooling heat
pump system with manual changeover from heat to cool.
First stage heating and cooling cycle rates are fixed at 3
cph.
"Tip of the Day" Remember to remove power first.
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| | DSBATCH
| "Re(2):Changing from T8400C to T8011R Tstat" , posted Mon 14 Jul 21:10
I do have a heat pump.....TEMPSTAR....outside heatpump unit with air handler in the attic.
DSB
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| | Houston204
| "Re(3):Changing from T8400C to T8011R Tstat" , posted Mon 14 Jul 21:13
Tempstar heatpumps require the O terminal energized for cooling. I see it is not currently in use.
"Tip of the Day" Remember to remove power first.
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| | DSBATCH
| "Re(4):Changing from T8400C to T8011R Tstat" , posted Mon 14 Jul 21:18
What other info should I gather....it looks and acts like a heat pump to me....the unit heats and cools the house fine...I just want to change over to the programmmable Tstat....I got 2 off of a HVAC guy for $50 and they are brand new.
Would it help if I got the wiring from the controller in the attic?
DSB
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| | Houston204
| "Re(5):Changing from T8400C to T8011R Tstat" , posted Mon 14 Jul 21:47:
The model number of your Honeywell Temptroll so I can check if a heatpump stat requires additional configuration at the Zone Controll.
The model number of your outdoor unit might also help.
It wouldn't hurt to try...
White to W1
Yellow to Y
Green to G
Red to R
Remove the jumper between W1 and Y
You will need Common wired to "C" at the stat and zone control.
I would use blue for C.
I know that a Carrier Weathermaker zone control does not require a heatpump stat to control heatpumps.
"Tip of the Day" Remember to remove power first.
[this message was edited by Houston204 on Mon 14 Jul 21:52] |
| | dsbatch
| "Re(6):Changing from T8400C to T8011R Tstat" , posted Sun 20 Jul 22:30
I have a TEMPSTAR heat pump outside unit model # N2H3Y2AKA100.
The controller in the attic is a Honeywell Universal Mini Zone TrolATemp. Zone 1 on the controller has the following: R, C, E, W1, Y1, G, W2, Y2, O, B, L. It shows that these connections should go to a Stat with the same connections. My current Stat, which apparently is not a heat pump Stat has wires connected to R, W1, Y1, G. Again, the new STAT has G, C, R, W1, Y, L, W2, E, B, O. W1 and Y are jumped. Should this jumper stay?
How should I wire up the new STAT (T8011R)?
DSB
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