Gas and Oil Home Heating Furnaces - Honeywell Thermostat setting,,,,,,,
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pear4710
10-24-06, 02:35 PM
I am trying to set the "heat anticipater' on my wall mounted furnace thermostat. The furnace starts ok but it seems to run a bit longer than I feel in right. The rooms heat up well before the thermostat decides to shut the furnace off. Not horribly long but longer than I'd like. I looked at the setting on my anticipater and it is set at .15. Should I set it higher, like maybe towards .18, or should I take it the other direction, like maybe .13? I'm not sure which way to go, or how much. Thanks,,,,
volts
10-25-06, 05:56 AM
As a basic procedure: Adjust the heat-anticipator lever one calibration mark closer to the "LONGER" setting if the furnace turns off and on too frequently. If the furnace allows room temperature to fall too low or rise too high before going off, move the lever one mark away from the LONGER setting.
Jay11J
10-25-06, 03:50 PM
I normaly set it at .8
the 1.2 is the longest run time and going down to the right to .2 is the shortest run time.
You don't want to short cycle, it's harder on the equipment.
the 1.2 is the longest run time and going down to the right to .2 is the shortest run time.
You don't want to short cycle, it's harder on the equipment.
Philossifer
10-28-06, 04:43 AM
pear,
The correct way to set the heat anticipator is to match it to the milliamp draw of the gas valve. Most gas valves have a plate on them with information like model number, type, max pressure and the “amp” draw. Sometimes the information is stamped into the gas valve itself and sometimes there’s no info at all. At that point, if you can't find the info on a plate or on the valve, you would need to measure the amp draw with a clamp on ammeter. But remember you’re looking at milliamps; so with a clamp on meter you would use 10 turns of wire around the pick up, read the current and then divide that number by 10.
Basically, you set the heat anticipator to match the amp draw of the gas valve. So if you read on the plate the amp draw to be .4 amps; you would set the heat anticipator to .4
Some HVAC techs will set the anticipator one amp more than the gas valve milliamp draw to give a little longer run time and a longer off time.
Phil
The correct way to set the heat anticipator is to match it to the milliamp draw of the gas valve. Most gas valves have a plate on them with information like model number, type, max pressure and the “amp” draw. Sometimes the information is stamped into the gas valve itself and sometimes there’s no info at all. At that point, if you can't find the info on a plate or on the valve, you would need to measure the amp draw with a clamp on ammeter. But remember you’re looking at milliamps; so with a clamp on meter you would use 10 turns of wire around the pick up, read the current and then divide that number by 10.
Basically, you set the heat anticipator to match the amp draw of the gas valve. So if you read on the plate the amp draw to be .4 amps; you would set the heat anticipator to .4
Some HVAC techs will set the anticipator one amp more than the gas valve milliamp draw to give a little longer run time and a longer off time.
Phil