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Phil
Phil, Mechanical Engineer
Category: HVAC
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Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Wiring ComfortNet CTK04 to Goodman Furnace

Customer Question

Wiring ComfortNet CTK04 to Goodman Furnace
Submitted: 1 year ago.
Category: HVAC
Expert:  gotoman for ac replied 1 year ago.

How far are connecting to furnace and is furnace communicating. Russ

Customer: replied 1 year ago.
Wires are already run and has R C 1 & 2, with 1 & 2 being data lines. Furnace causes thermostat to power up but they the thermostat doesn't recognize air handler.
Expert:  gotoman for ac replied 1 year ago.

Is this gas furnace or air handler. Russ

Customer: replied 1 year ago.
LP Gas Furnace
Goodman GMVM971205DN
Customer: replied 1 year ago.
Trying to wire the ComfortNet CTK04 thermostat and the Aprilaire 8126A Ventalation Controller to the furnace
Customer: replied 1 year ago.
Thinking there are two wires that need wire nutted together but ......
Expert:  gotoman for ac replied 1 year ago.

I have manual here let me check.

Expert:  gotoman for ac replied 1 year ago.

Are you wiring thru an IFC board for ventilator.

Expert:  gotoman for ac replied 1 year ago.

You ay have to revers the 24 volt wires on the transformed to get it to work. Might be reverse polarity.

Customer: replied 1 year ago.
The part we are having issue with is which wires to nut together, one form the thermostat and one from the ventilation which I am guessing it what creates power to the ventilation.
Expert:  gotoman for ac replied 1 year ago.

I see 4 wires going from stat to IFC box and wire connection at bottom to dh

Customer: replied 1 year ago.
Correct and 5 wires comes from the ventilator into the furnace with 2 wires going to the transformer next to the wired power switch.
Customer: replied 1 year ago.
the two wires are not part of the 5 strand
Customer: replied 1 year ago.
Accordingly there should be 4 wires into the terminals and 1 wire nutted to the thermostat wire, just cant figure out which one.....
Expert:  gotoman for ac replied 1 year ago.

Right now remove ERV wiring and see if furnace connects.

Expert:  gotoman for ac replied 1 year ago.

Always try to connect on system at a time,

Customer: replied 1 year ago.
understand that, trying to figure out which two go together but this isn't working. don't want to waste any more time.

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