Installation Instructions
Page 1
... .1A @ .75 Vdc MERCURY NOTICE If this Product... 1. Failure to make sure the product is suitable for heat only, cool only or heating and cooling systems. See Table 1. Do not mount the thermostat where it can be a trained, experienced service technician. 4. hot or cold air from the sun or appliances. - Read these Instructions... as outside wall behind doors and in an area with good air circulation at average temperature. CAUTION Electrical Shock Hazard. Registered Trademark Copyright © 2004 Honeywell International Inc. • • All Rights Reserved 69-1606ESF-3
... .1A @ .75 Vdc MERCURY NOTICE If this Product... 1. Failure to make sure the product is suitable for heat only, cool only or heating and cooling systems. See Table 1. Do not mount the thermostat where it can be a trained, experienced service technician. 4. hot or cold air from the sun or appliances. - Read these Instructions... as outside wall behind doors and in an area with good air circulation at average temperature. CAUTION Electrical Shock Hazard. Registered Trademark Copyright © 2004 Honeywell International Inc. • • All Rights Reserved 69-1606ESF-3
Installation Instructions
Page 2
... outward until the cover snaps free from subbase by tightening the three screws. See Fig. 3. 9. See Heat Anticipator Setting section. 11. Adjust the heat anticipator (select models) to the wall with adjustable heat anticipator. Disconnect thermostat from the thermostat base. Tighten the mounting screws. it is not required for typical hookup diagrams. 4. See Fig. 1. 10...
... outward until the cover snaps free from subbase by tightening the three screws. See Fig. 3. 9. See Heat Anticipator Setting section. 11. Adjust the heat anticipator (select models) to the wall with adjustable heat anticipator. Disconnect thermostat from the thermostat base. Tighten the mounting screws. it is not required for typical hookup diagrams. 4. See Fig. 1. 10...
Installation Instructions
Page 3
... PP PP MILLIVOLT GENERATOR M20438A Fig. 5. M20439 Fig. 6. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. T812, TS812 THERMOSTATS T812C THERMOSTAT RWY G 1 L1 L2 HEAT FAN COOL 1 POWER SUPPLY. T812C in typical gas heating system. T812D THERMOSTAT R Y 1 L1 L2 COOL 1 POWER SUPPLY. M20437 Fig. 4. M20441 Fig. 8. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. T812B...
... PP PP MILLIVOLT GENERATOR M20438A Fig. 5. M20439 Fig. 6. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. T812, TS812 THERMOSTATS T812C THERMOSTAT RWY G 1 L1 L2 HEAT FAN COOL 1 POWER SUPPLY. T812C in typical gas heating system. T812D THERMOSTAT R Y 1 L1 L2 COOL 1 POWER SUPPLY. M20437 Fig. 4. M20441 Fig. 8. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. T812B...
Installation Instructions
Page 4
... do not attach it connected to the system wiring. Automation and Control Solutions Honeywell International Inc. Connect an ammeter of the thermostat. Can damage heat anticipator. Make certain that have a 24 Vac to 30 Vac fixed anticipator. Calibration This thermostat is carefully calibrated at least one complete automatic cycle. SETTING AND CHECKOUT Temperature Setting...
... do not attach it connected to the system wiring. Automation and Control Solutions Honeywell International Inc. Connect an ammeter of the thermostat. Can damage heat anticipator. Make certain that have a 24 Vac to 30 Vac fixed anticipator. Calibration This thermostat is carefully calibrated at least one complete automatic cycle. SETTING AND CHECKOUT Temperature Setting...