Honeywell T8090T Owner's Manual - Page 22
Thermometer Adjustment, Fig. 7-Thermometer adjustment.
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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- THERMOMETER ture; then compare the readings. Be careful SLOT BACKSIDE OF FLIP-UP COVER not to touch the thermometer or breathe on it. If the readings are the same, replace the cover and put the system into operation. INSERT AND TURN SCREWDRIVER 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. M1810 Fig. 7-Thermometer adjustment. 22 69-0432-1