Question about Electric Circuit Breaker Kit for Furnace

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Wiring NO, NC relay on Nordyne furnace

While disassembling NO,NC relays on my Nordyne furnace I failed to mark the black & yellow wires coming from blower. The relays are 20A-10A 240VAC. Is there a web site I could go to for diagrams.

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  • 359 Answers

NORDYNE , GOODMAN, AND NUTONE ARE ALL BUILT BY SAME MFG SO IF YOU TRY ALL THESE MAYBE YOU CAN FIND THE HELP YOU NEED

Posted on Jan 12, 2009

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Posted on Jan 02, 2017

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1 Answer

I WANT TO HOOK IT UP TO A FAN,BUT ARE NOT SURE WHICH CONNECTIONS TO ATTACH TO.


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Nov 12, 2009 | Electric Circuit Breaker Kit for Furnace

1 Answer

Replacing blower motor in furnace w/Fasco brand #D727


Some one missed the wiring diagram. I believe its like this:
L1 = Line 1 = (Hot all are same thing)
Black Hi
Blue Med
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Now usually the black is for AC and connects to a normally Open (NO) contact on the blower relay.
The heater speed (either red or blue) go the the normally Closed (NC) on the blower relay and on one side of this wire or contact on the relay it goes to the heating blower thermostat on the furnace.
The remaining wire (blue or red) you tape off.
L1 also feeds the Run Capacitor on 1 side and the Brown wire feeds the opposite side

The white wire is Neutral and goes to the neutral on the main line.

If this helps you please rate me accordingly and good luck.








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If you chose to install this with an auxilary transformer. Turn the main power off to the furnace. Mount the transformer on the handi box to the furnace or inside the furnace cabinet. Wire the primary wires from the transformer to the main power coming into the furnace. Connect black to black and white to white. Wire the secondary side of the transformer in "series" with a #50 relay, the humidistat, the solenoid valve and back to the transformer. Determine which wire powers the blower motor for the heating speed. Clamp the #50 relay to the wire.
Good luck
HVAC Teacher

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