wiring furnace transformer Q.

Discussion in 'HVAC Heating & Cooling' started by thebunrman, Oct 26, 2012.

  1. thebunrman

    thebunrman New Member

    Messages:
    1
    Location:
    New York
    Hi all, I am trying to install a new transformer on my furnace and well the new transformer does not have the labels my old one did, COM , COM , 120v, 24v. Here is a picture of the transformer it only shows LOAD, LINE but doesn't specify which lead is exactly what.

    Also I have attached a second picture of my old transformer.

    Thanks for any help.

    [​IMG]

    [​IMG]
    [​IMG]
    Last edited: Oct 26, 2012
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,332
    Location:
    New England
    Line is the 120vac, load is the 24vac. It often doesn't matter which lead goes where as long as you match the leads to the line (120vac) to the line and the load to the load.
Similar Threads: wiring furnace
Forum Title Date
HVAC Heating & Cooling Wiring the fan on an Norton (broan) Furnace Jan 30, 2014
HVAC Heating & Cooling Adding a Common to existing furnace wiring Nov 22, 2012
HVAC Heating & Cooling terms in a hot water heating system and help needed on wiring Nov 6, 2014
HVAC Heating & Cooling Thermostat Wiring question Feb 14, 2014
HVAC Heating & Cooling Replacing Carrier TSTATCCPRH01-B With Ecobee Smart Wiring Question Jan 22, 2014

Share This Page