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chris17
Dec 1, 2007, 04:13 PM
We only have wire colors on the old thermostat and can not match up the letters with the new thermostat (Honeywell RTH6300B)
hvac1000
Dec 1, 2007, 04:58 PM
NOTE your old thermostat is a line voltage unit see below.

http://customer.honeywell.com/techlit/pdf/PackedLit/60-2241.pdf

Your new thermostat is for 24 volt low voltage. IT IS NOT GOING TO WORK IN YOUR APPLICATION. read below.

http://customer.honeywell.com/techlit/pdf/69-0000s/69-1717.pdf