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Old 07-13-2009, 09:33 AM   #1
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A/C low voltage hook up for a secondary electric edison meter


I replaced a circuit board on a Bryant furnace and connected the low voltage wiring up from the t-stat and the condensing unit out side. but now I have a secondary electric meter just for the condensing unit that comes in down at the furnace, 4 wire and I can't quite remember how it went back in.
The unit out side was supplied by the utility company Mod: # 225121 and the catalog # is DCU 1193-1. which I can't find any information on.
I opened the out side box from Edison and found that the red and white wires coming inside the house from Edison are hooked to a transformer and the blue and green wires come from a circuit board with two little relays or at least I think they are relays.
Any help at all would be appriciated
Thank you in advance
Drew Foley

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Old 07-13-2009, 03:26 PM   #2
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A/C low voltage hook up for a secondary electric edison meter


Sounds like a load shed.
Does your electric company offer a lower rate if they can shut your A/C off when they need.

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Old 07-13-2009, 03:50 PM   #3
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A/C low voltage hook up for a secondary electric edison meter


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Originally Posted by drewfoley View Post
I replaced a circuit board on a Bryant furnace and connected the low voltage wiring up from the t-stat and the condensing unit out side. but now I have a secondary electric meter just for the condensing unit that comes in down at the furnace, 4 wire and I can't quite remember how it went back in.
The unit out side was supplied by the utility company Mod: # 225121 and the catalog # is DCU 1193-1. which I can't find any information on.
I opened the out side box from Edison and found that the red and white wires coming inside the house from Edison are hooked to a transformer and the blue and green wires come from a circuit board with two little relays or at least I think they are relays.
Any help at all would be appriciated
Thank you in advance
Drew Foley
Here is the schematic from Edison. Normally if they they ran a 4 wire, Red,White,Green and Blue. Red and white is for the 24 power for the relay and blue and green are for the contacts. BUT without bieng there too see it who knows what they did. YOU NEED TO TRACE OUT THE WIRES. If you don't do it correct (poof the magic smoke comes out)
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Old 07-13-2009, 07:12 PM   #4
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A/C low voltage hook up for a secondary electric edison meter


Sounds like you are in the Tri County area.

Isolate thermostat wires at furnace. Turn furnace off.

Identify the meter wiring. You should have red, green, blue, white.

Red goes to R on board. Blue goes to C on board. White goes to Y on board (there should already be a blue wire on the board from the thermostat).

You should have a green wire left over from the meter wiring. That will be used last.
You should have a two conductor wire that goes to the ac. They should be red and white.
Connect red wire to green wire with a wire nut. The remaining white wire goes to C on board,

Turn the power on to the furnace.

It will take meter up to twenty minutes to reset.
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Last edited by hvaclover; 07-13-2009 at 07:29 PM.
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