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Honeywell T87K Support Question

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Question posted by mrknight on February 14th, 2014

Gravity Heat

I have gravity heat with 2 wires, 1 wire on r and 1 wire on w.It is still not working! What should I do?

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Related Honeywell T87K Manual Pages

Owner's Manual - Page 1

...reserved. 69-1958EFS-1 Disconnect power before beginning installation. US Patent No. This thermostat contains a Lithium battery which may apply, See www.dtsc.ca.gov/hazardouswaste...T87K The Round® This manual covers the following models: • Heat-only T87K Pre-installation checklist Check package contents: • Thermostat • Wall anchors & screws (2 each) • Heat...

Owner's Manual - Page 2

... thermostat provides electronic control of: • 24 VAC heating systems (T87K) • 24 VAC heating and cooling systems (T87N) System Types • Gas or oil heat (T87K) • Gas, oil, or electric heat with air conditioning (T87N) • Warm air, hot water, high-efficiency furnaces, heat pumps, steam, gravity • Heat only • Heat only with fan (T87N) • Heat only, 2-wire...

Owner's Manual - Page 3

..., position over anchors, then insert and tighten mounting screws. Loosen screw terminals, insert wires into the wall opening with nonflammable insulation to connect terminals W and Y. Connect to secondary side of wire (not supplied) to prevent drafts from affecting thermostat operation. B Heat pump changeover valve energized in place between R & Rc. Connect to secondary side of...

Owner's Manual - Page 4

...thermostat, then push gently until the thermostat snaps into place. Thermostat T87N/T87K • Owner's Manual Fan operation settings (T87N) Fan operation settings: F: For gas or oil heating systems, leave the fan operation switch in this setting for heat pump or electric heat...(for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G...

Owner's Manual - Page 5

.... • Off: All systems are off. Fan switch (T87N) • On: Fan runs continuously. • Auto: Fan runs only when heating or cooling system is determined to be sent to you . If at any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr., ...