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ineedheat67
Dec 16, 2013, 02:58 PM
How do I program the furnace with the HoneyWell RTH230B
Grady White
Dec 16, 2013, 04:23 PM
Here's a link to the manual: https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-1800.pdf