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Honeywell T87F Support Question

Honeywell T87F Support Question

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Question posted by mdsteinconsulting on November 30th, 2017

Changing Thermostat From T87f To Nest, 3rd Gen.

Hello,I am trying to change my thermostat from a Lennox (Honeywell) T87F 2048 to a Nest, 3rd generation.The Honeywell thermostat uses the following wires: R, W, Y, G, B, and O.Nest does not recognize the B and O wires.Please explain what the B and O wires control.Thank you!

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Related Honeywell T87F Manual Pages

Owner's Manual - Page 1

... on face of Your New Thermostat 1. The large 5, 6, 7 and 8 mean 50°F, 60°F, 70°F and 80°F, respectively. 2. T87F Easy-to 88°F. ...Thermostat Homeowner's Guide Features of thermostat. 4. COOL OFF 1 HEAT 6 5 FAN ON 7 8 AUTO 50 60 70 80 2 3 50 60 70 80 4 M6106 ® U.S. All Rights Reserved 69- 0203- 4 Registered Trademark Copyright © 2000 Honeywell...
Owner's Manual - Page 2

... the 10 degree mark for easy energy saving setting at least 10% www.honeywell.com/yourhome post-consumer paper fibers. The enlarged cover ring includes raised temperature graduations every two degrees Fahrenheit. on the dial. T87F EASY-TO-SEE THERMOSTAT HOMEOWNER'S GUIDE Temperature Selection To select the temperature, turn the transparent dial until...

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