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Thermometer Adjustment - Honeywell Trol-A-Temp T8090T Owner's Manual

Zone thermostat heating/cooling thermostat and subbase or wallplate
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Thermometer Adjustment

The thermometer was accurately calibrated at the factory and should only need adjustment if it
was dropped or mishandled.
If the setpoint lever and the thermometer reading do not agree, follow the procedure below.
Remove the thermostat cover and open the flip-up cover.
Set the thermostat cover on a table near a thermometer of known accuracy.
Allow at least five minutes for the cover
thermometer to sense the area tempera-
ture; then compare the readings. Be careful
not to touch the thermometer or breathe on
it.
If the readings are the same, replace the
cover and put the system into operation.
If the readings are different, insert a
small screwdriver in the thermometer slot,
shown in Fig. 7, and turn it until both
thermometers read the same.
Replace thermostat cover and put the
system into operation.
THERMOMETER
SLOT
Fig. 7—Thermometer adjustment.
22
BACKSIDE OF
FLIP-UP COVER
INSERT AND TURN
SCREWDRIVER
M1810
69-0432—1

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