Hello,

I have a roughly 15 1/2 year old furnace. Bryant 394B Gas furnace. The furnace cycles 5 times an hour. The thermostat is a Honeywell CT87A 4447 and on the packaging it says it calls for heat when the thermostat temp drops below 1 degree of the desired temo setting and shuts off at the desired temp. Anotherwords I have it at 70 and it comes on at 69 and shuts off at 70. However, How can I change the cycle to run about 3 times an hour? I have logged the cycles for a full day and it turns on for 3 and half minutes then off for 10 minutes , etc... I do know some thermostats have the option to set the cycle from 1 to 12 per hr but this one does not have it. I have tried to adjust the anticipator from the recommended .4 to .5 and then .6. same thing. It did not change the cycle. I did allow the system to adjust to the changed anticipator setting for a full day.

Any help would be fantastic. Thanks!

CAD:confused:

For a gas furnace that cycle time sounds good. If you change the time of the system you will also have a much larger swing in temperature and usually that is not desirable. If the anticipator will not adjust it enough for you you are out of luck.

See link

http://customer.honeywell.com/techli...0s/69-0274.pdf

Thanks. I will let it cycle 5 times an hour. At first it seemed too much for a gas furnace to work but the idea of temp swing makes sense if I had it set lower.