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replacing an old heat thermostat

2K views 1 reply 2 participants last post by  biggles 
#1 · (Edited)
My old Honeywell has only 2 wires, black and white. The only labels on their connections are 1 & 2.
The new prgramable G, W, Y, R & Rc
How do I know where to connect the 2 wires?
It is for an oil heat system only.
Thanks

Never mind I figured it out.
 
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