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    djryser's Avatar
    djryser Posts: 2, Reputation: 1
    New Member
    		  
    #1

    May 4, 2006, 01:32 AM
    New wiring of heatpump split system
    My house trailer has only electric heat. I have added the "A" coil and heatpump. I have replacaed the two wire thermostate cable with a five wire cable. One goes from the thermostate to the furnace the other goes from furnace to the outside unit.
    I'm using the two heaters as the aux heat.
    I have a Honeywell Cronotherm III thermostate.
    I have added two relays for each of the heating elements.
    I am using the origonal relay (sequencer) for the fan.

    I need to know how to wire the thermostate to both units.
    For example does W on the thermostate go to the W in the furnace and outside unit as well.

    Or just tell me how to wire the unit
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #2

    May 4, 2006, 03:12 PM
    Can you furnish the wiring diagram for the thermostat?
    djryser's Avatar
    djryser Posts: 2, Reputation: 1
    New Member
    		  
    #3

    May 5, 2006, 02:03 PM
    The thermostat is a programmable unit Cronotherm III
    These are the terminals R; C; O; B; G; W2; W1; Y1; L

    The furnace has no identification since I have rewired the controls, but I assume the fan will be "G" and each of the heating elementgs "W1 and W2" respectively

    The outside unit had the following terminals and I will give the place they go to on the control circuit board

    Y ----- T1 and Y
    O----- O
    W2 --- W2
    R --- R
    E --- goes through some adjustment device that has these markings 20; 40; 45 and back to R

    I hope this helps and thanks for the answer
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