Ask Experts Questions for FREE Help !
Ask
    2024011's Avatar
    2024011 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 8, 2009, 10:53 AM
    Appropriate wiring
    I have a new RTH7500D programmable thermostat, On my old thermostat I have wire W2, Y, G, R, B, and X. I need to know where to connect the B and X wire.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #2

    Nov 8, 2009, 01:00 PM

    The new t-stat should have a terminal designated "O/B" - connect wire previously used on "B" terminal. "C" on new t-stat is probably equivalent to "X" from old one. You will need to access setup menu and configure "O/B" terminal to power reversing circuit in heating mode.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Wiring direction for a multi wiring system thermostat! [ 3 Answers ]

I have a 2 wire system (3 phase), need to connect multi wiring system thermostat! Need to know if, its correct to just use line#1, and the device already has a jumper?

Janitrol wiring to rth3100c wiring [ 1 Answers ]

I've taken off the cover and the wires are all OK but the black one where does it go to? My heater won't come on (well some times the AC come on with out me turning it on.)

Honeywell wiring different from old thermostat wiring [ 2 Answers ]

I purchased a non-programmable digital thermostat to replace an analog thermostat with wiring red, white yellow and black. How do I match the wiring? HELP!!

John Deere - My dog ripped the wiring Out - Need Wiring Diagram or photos [ 2 Answers ]

I have a 3 year old L110 that ran fine until last week. I think my dog chased a chipmunk up under the hood and in trying to get to him ripped a bunch of wires out. I have spliced back together the obvious wires (color coded) but I have one black wire that I assume is a ground(?) and the two...

View more questions Search