rth7500 thermostat wiring question


  #1  
Old 01-19-09, 04:10 PM
J
Member
Thread Starter
Join Date: Dec 2008
Location: Nebraska
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
rth7500 thermostat wiring question

Both the heat pump and propane furnace are Coleman brand.
G9T10020UPC13C=furnace
BRHS0421CD=heat pump

I'm trying to help my parents over the phone install the thermostat and can't seam to get it work.

x-black
B-brown
R-red
O-orange
Y-Yellow
G-green
L-Blue
W2-white

these are the colors and letters that are on the furnace and the picture is how we tried to wire it but it would not work, any ideas please help

Photobucket
 
  #2  
Old 01-19-09, 05:12 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
What is the model # of the old t-stat?

This how I think it should be wired. But before we wire it, I need to get the info from you before I give a go.


Old/color-----new
x-black---------C
R-red-----------Rh/Rc
O-orange-------O/B
Y-Yellow---------Y
G-green---------G
L-Blue-----------L
W2-white-------E
 
  #3  
Old 01-19-09, 05:27 PM
J
Member
Thread Starter
Join Date: Dec 2008
Location: Nebraska
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
It is a Coleman thermostat what about the B-Brown wire
 
  #4  
Old 01-19-09, 05:34 PM
J
Member
Thread Starter
Join Date: Dec 2008
Location: Nebraska
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
I think it is model # LR11746
 
  #5  
Old 01-19-09, 06:19 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
Originally Posted by jeffs
I think it is model # LR11746
I am not coming back with anything on that # on Coleman.

I need to know for sure what the make and model before we go forward with this.
 
  #6  
Old 01-24-09, 03:21 PM
J
Member
Thread Starter
Join Date: Dec 2008
Location: Nebraska
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
This is the old thermostat


Photobucket

Photobucket
 
  #7  
Old 01-24-09, 05:36 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
What's that letter between Y and G I think? (can't tell due to the flash)
 
  #8  
Old 01-25-09, 10:40 AM
J
Member
Thread Starter
Join Date: Dec 2008
Location: Nebraska
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
Letter E is between Y and G but its not being used
 
  #9  
Old 01-25-09, 08:20 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
E should be wired up.

If you switch the tstat to emergceny heat, you won't have any heat.

so on the new stat, add a jumper between E and Aux.
 
  #10  
Old 01-26-09, 07:18 AM
J
Member
Thread Starter
Join Date: Dec 2008
Location: Nebraska
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
so just to clarify, we will not be using the brown wire on the new thermostat? The rest should be wired like this with a jumper between E and AUX

Old/color-----new
x-black---------C
R-red-----------Rh/Rc
O-orange-------O/B
Y-Yellow---------Y
G-green---------G
L-Blue-----------L
W2-white-------E
 
  #11  
Old 01-26-09, 08:46 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
Correct, brown is not used.. Not sure why they did it.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: