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

    Feb 28, 2008, 08:28 PM
    Installing a Noma 5+2 on a Whalen Series IV Heat Pump
    Hi All

    I just moved into a condo not too long ago and have a Whalen Series IV heat pump/AC. The wires from the unit are G, B, Y, W, & R. They are plugged into a Simple Comfort 2001 thermostat. In the thermostat the connections are G, B, Y, W, C, & R. The yellow wire from the unit goes into the Y connector in the t-stat with a jumper that goes into the W connector. The W wire from the unit goes into the C connector in the t-stat.

    The Noma unit I have only has 4 wires and runs on two AA batteries. It has connectors for G, R, Y, & W. Is this unit (Noma 52-2557-0) compatible with my heat pump even though the wires don't match up?

    If anyone has installed one of these I would greatly appreciate the help...

    Thanks!
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Feb 28, 2008, 08:34 PM
    I do not believe the thermostat will work on your heat pump. It is for a standard single stage heat. You need one for two stages of heat.

    Take it back and get a good Honeywell heat pump thermostat.
    extensioncord's Avatar
    extensioncord Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Feb 28, 2008, 08:43 PM
    Thanks for the quick response... I will look into it. Do you have any suggestions for models? I'm looking for something pretty basic.

    Thanks again!
    wumcdonald's Avatar
    wumcdonald Posts: 1, Reputation: 1
    New Member
    		  
    #4

    Jan 31, 2011, 01:35 PM
    The only digital thermostat that I've found that works with the Whalen Series VI heat pump/AC is the Honeywell RTH7600D, about CAD$ 120.
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