Honeywell 191108AJ Owner's Manual - Page 23

Thermometer Adjustment The thermometer was accurately calibrated at the factory and should only need adjustment if it has been dropped or mishandled. If the setpoint lever and the thermometer reading do not agree, follow the procedure below. Remove 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 cover thermometer to sense area temperature; 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 BACKSIDE OF FLIP-UP COVER INSERT AND TURN SCREWDRIVER M1810 Fig. 7-Thermometer adjustment. 23 69-0643-1