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I need help wireing a taco 571-2, I have 2 wires (red&white)from

 
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  • Answered by:Rickheatdoc
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Customer Question

I need help wireing a taco 571-2, I have 2 wires (red&white)from a tranformer, 2 wires (red&white)form the circulator relay switch, and 2 wires (red&white) from the thermastat, could you please tell me which # XXXXX they go on and which get conected together? thanks

Submitted: 1263 days ago.
Category: HVAC
Value: $15
Status: CLOSED
Picture
Expert:  Rickheatdoc replied 1262 days and 23 hours ago.

HiCustomerbr />
Here is a wiring diagram

http://www.taco-hvac.com/uploads/FileLibrary/100-3.pdf

Customer replied 1262 days and 23 hours ago.

I already looked at that and couldn't figure it out. I have 3 different wires , thay only show 2

Accepted Answer

Picture
Expert:  Rickheatdoc replied 1262 days and 22 hours ago.

If you break down your wiring you will see you only have 2 wires from the thermostat, 2 wires from the transformer and 2 wires to the operating control.

I'll try to explain it, you take 1 lead from the hot side of your transfromer to R on your
stat, W on your stat to 1 on zone valve head. You take the 2 terminal on head to one of the T terminals on your operating control and to the common on the transfromer. Then 3 terminal on head to the other T terminal on the operating control.

Expert TypeHVAC contractor/tech
Category: HVAC
Pos. Feedback: 98.0 %
Accepts: 4161
Answered: 10/25/2009

Experience: 40+ years experience licensed oil & gas tech

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