Question about Ingram GMS90904CXA Heater

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Wiring on thermostat tl7235a1003

I have to replace my defective honeywell thermostat CT62 for my electric
baseboard heater. I purchased a honeyell tl7235a1003 for the relacement.
However, the old unit was wired by two wires, and the replacement unit
has 4 wires (L1-L2 and 2 on Load). How would I wire te new one correctly? Many thanks for all your kind help.

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Go to honeywell and get instructions http://customer.honeywell.com/honeywell/ProductInfo.aspx/TL7235A1003 .Peter

Posted on Mar 18, 2009

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OK, here's my guess at this...I hope someone more knowledgable will confirm or correct me.

A line voltage thermostat switches the power to the baseboard heater. In other words, it's just like a wall light switch except it activates and deactivates based on the temperature.

I think your old model CT62 was wired exactly like a light switch. The hot wire to the light is broken then run to the wall switch and then back to the light so there's no neutral wire at a light switch box. This worked fine for your CT62 because it did not need power, it only needed to switch it.

The new model TL7235A1003 requires electrical power because it's programmable so you need both a hot wire and neutral wire at it's installed location. In addition you also need 2 wires leading to the baseboard heater so the thermostat can supply it's power.

I believe L1-L2 are to be connected to the hot/neutral wires, and the Load wires go to the baseboard heater.

If I am correct you will not be able to use this thermostat without some re-wiring.

Good luck.

Posted on Nov 27, 2007

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