Possible to Calibrate a T87K? If Not, Recommend a Tstat

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agcowvet
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Posts: 92
Joined: Mon. Oct. 08, 2012 9:27 pm
Location: Stanley, Finger Lakes, NY
Hot Air Coal Stoker Furnace: efm AF150
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Newmac NL-2 (oil)

Post by agcowvet » Tue. Dec. 17, 2013 12:02 am

This is the 'new' Round thermostat, with electronic switching--NOT the bimetal strip/mercury switch T87.

Thermostat *seems* to be working *pretty close* to setpoint based on external thermometer (alcohol/glass tube type) BUT the internal thermometer is WAY off, like >5 degrees off. It's a simple bimetal arrangement, it would appear, but not readily accessible. Anyone know if there's some trick to adjusting it?

Alternatively, what's a good, inexpensive, non-programmable, heat-only thermostat?

(The bachelor way would, of course, be to apply a 99-cent thermometer to the wall, and a piece of electrical tape to the lower portion of the thermostat dial...however, that will not fly with the lady of the house. :lol: )


 
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carlherrnstein
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Joined: Tue. Feb. 07, 2012 8:49 am
Location: Clarksburg, ohio
Hot Air Coal Stoker Stove: combustioneer model 77B
Coal Size/Type: pea stoker/Ohio bituminous

Post by carlherrnstein » Tue. Dec. 17, 2013 8:00 am

Check this out, it doesn't have a thermometer to lie to you. http://www.amazon.com/Honeywell-CT30A1005-Standar ... thermostat

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