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Thermostat - Can I change cycle times?

dncps
dncps Member Posts: 3
I have an older gas furnace with a new digital non-programmable Honeywell Thermostat. The thermostat comes default set at 4 (Four 15 minute per hour cycles). The problem is that I would like to adjust the furnace so that it turns-on less frequently than it currently does. The manual states for gas furnaces that 4 is the proper setting. Can I set it for "3" (20 minute cycles) so that the furnace does not turn-on as frequently? Could this cause furnace problems?

It's not clear to me the relationship between the cycle times selected and the set point chosen. Does the cycle time setting limit the # of times that the thermostat will turn on the heater within a 60 min period? Is this independent of set point? BTW this thermostat does not have a clock. It's very basic but does have the option to change cycle times.

Thank you

Comments

  • Kevin_in_Denver_2
    Kevin_in_Denver_2 Member Posts: 588
    Cycles per Hour vs. deadband

    There's a thread on this subject already, and we're trying to figure out the answer to your question.

    Chances are you won't see much difference in performance going to 3 cph from 4 cph. Try 1 cph or 2 cph, and tell us what you notice. The temperature swing should increase somewhat, and theoretically, the bigger the swing, the more efficient the system.

    There was an error rendering this rich post.

  • dncps
    dncps Member Posts: 3
    Thermostat - Can I change cycle times?

    Thanks. Then, it's ok to try the different cycle settings.
    I take it the CPH setting has no effect on the electrical ability of the thermostat to turn-on or turn-off the furnace, only on how often it does such.

    Yes, when you obtain some information regarding the theory of operation: cph vs set point, etc., that would be great.
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