Help. please! Thermostat Wiring.

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  #1  
Old 11-18-08, 04:01 AM
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Help. please! Thermostat Wiring.

I am changing out a york thermostat with two mercury bulbs inside. I think the model # is 2TH11703324A. I bought a Honeywell TH5220D to replace it thinking it was a direct replacement and now cannot figure out how to hook up the wiring. I'm freezing, help!

The wiring on the York is:
R - red
G - green
Y - yellow
O - orange
H - black
W - white
B - blue
X - brown

The terminals on the TH2220D are:
Rc
R (jumped to Rc)
Y
C
O/B
G
Aux
E
L

Can you please tell me which wire goes where on the new thermostat? Thank you so much for the help!
 
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  #2  
Old 11-18-08, 06:54 AM
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Old-------------New
R - red---------R/Rc
G - green--------G
Y - yellow--------Y
O - orange-------O/B
H - black---------Not used (See note below)
W - white--------W
B - blue----------C
X - brown--------E jumper to Aux (See note below)


Note- If you turn on the system and it turns out you are not getting the warmth from the vent. then we need to wire up H to OB instead of O.

We will use the jumper between Aux and E for now till we have time to see if your air handler is able to stage the back up.
 
  #3  
Old 11-21-08, 04:31 AM
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Thanks for the help, Jay.

Originally Posted by Jay11J View Post
Old-------------New
R - red---------R/Rc
G - green--------G
Y - yellow--------Y
O - orange-------O/B
H - black---------Not used (See note below)
W - white--------W
B - blue----------C
X - brown--------E jumper to Aux (See note below)


Note- If you turn on the system and it turns out you are not getting the warmth from the vent. then we need to wire up H to OB instead of O.

We will use the jumper between Aux and E for now till we have time to see if your air handler is able to stage the back up.
Jay, thanks for your prompt help. When I went to install the thermostat there is no W on the bottom row of indicators. There is one on the top row but it is also I one of the other wire indicator slots on the bottom. Should I wire them together?
 
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Old 11-21-08, 06:10 AM
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My bad. the W should of said Aux.
 
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