Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater
Hi, these mechanical thermostats have what is called a heat antcipator on them. If you remove the cover you will see in increments or numbers such as 1.0, o.1, .2, .3, .4 or o.1, 2, 3, 4, . The stat and main gas valve work together and have to draw the same amount of amps to cycle the unit properly. This stat will have a copper arrow pointing at a number. A good place to start is to set it at .4. If the unit does not cycle right, set it at 1.0 and go from there until it cycles. Let it go through several full cycles during each time you adjust it until it is correct. These are good dependable stats as I have many on my service truck. If it doesn't take care of the problem, take it back and return it for one that is not faulty which happens often. Best of luck to you.
Ps, the small manual that comes with a new stat has that information on it, anticipator settings.
A/C, & Heating Contractor
Posted on Mar 11, 2011
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Posted on Jan 02, 2017
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