Thermostat Installation

Discussion in 'HVAC' started by jeff7, Jan 21, 2007.

Help Support House Repair Talk by donating:

  1. Jan 21, 2007 #1

    jeff7

    jeff7

    jeff7

    New Member

    Joined:
    Jan 21, 2007
    Messages:
    4
    Likes Received:
    0
    I bought a new digital thermostat at lowes to replace my current Trane mechanical thermostat. I thought it would be quick install, but I have wiring problem. The current thermostat has 8 wires hooked to it from the wiring out of the wall. The new thermostat only has enough terminals for a 4 or 5 wire connection. Do I need the extra wires? Do I need to purchase a new T-stat with a 8 wire connection? Can i just connect the 5 wires and forget about the rest? Any suggestions would be greatly appreciated.
     
  2. Jan 21, 2007 #2

    Hube

    Hube

    Hube

    Well-Known Member

    Joined:
    Apr 1, 2006
    Messages:
    114
    Likes Received:
    0
    More info needed to give proper advice.
    what is the make and model of the old T-stat
    what type of heat/cool system,(forced air gas or oil,heat pump, hot water, electric)???)
    what make ,model is the new T-stat.
    Post back with this info and you may get some definite advice.
    Thank you.
     
  3. Jan 22, 2007 #3

    jeff7

    jeff7

    jeff7

    New Member

    Joined:
    Jan 21, 2007
    Messages:
    4
    Likes Received:
    0
    The make and model of the old t-stat is Trane Weatherton
    Hear pump system - Trane Weatherton High Efficiency Heat Pump XE 1100
    New T-stat Hunter Just Right Model # 42999
    Hope someone can help me out.....
     
  4. Jan 22, 2007 #4

    glennjanie

    glennjanie

    glennjanie

    Well-Known Member

    Joined:
    Mar 1, 2006
    Messages:
    2,990
    Likes Received:
    6
    Hello Jeff:
    Your heat pump requires lines for the reversing valve which changes from heat to cool. It also probably has a supplemental electric heater and an emergency heater. If your new t-stat doesn't provide for those functions you will have trouble.
    I would recommend going back to the Trane dealer and asking him for an up dated thermostat that will answer to the things you desire.
    Glenn
     

Share This Page