Thermostat help

[colin.mitchell.129]

I'm currently installing a beacon morris 45k btu heater in my garage. I also bought a Honeywell digital programmable thermostat to go with it. The beacon morris guy told me I only need 2 wire(red and white only) thermostat wire, but I think I need more than that for this to work. Menards sells thermostat wire in either 2 or 5 wire form. Any help would be appreciated. Thanks.

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[Ricoch3T]

Technically you only need two wires to make it work.
Since you have a Tstat that requires power you can power it from the heaters transformer (assuming it has one). In that case you'll need 3 wires. red(power), white(heat), blue/black whatever color you want (Common).

I say assuming it has a transformer b/c some heaters just switch 120volts to turn on, some are 24 volts. I'm not familiar with your heater.

 

[colin.mitchell.129]

Yes it has 24v. The common wire is what was confusing me. So a simple dial thermostat would just use the red and white, but I need the common in addition to actually power the thermostat. Thanks for your help.

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