Honeywell T812C1000 Installation Instructions - Page 3

T812A THERMOSTAT R W COMBINATION FAN AND LIMIT CONTROL LIMIT FAN TH TR TH TR L1 (HOT) 1 GAS VALVE TRANSFORMER L2 FAN MOTOR 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M20437 Fig. 4. T812A in typical gas heating system. TS812 THERMOSTAT R W PILOT CONTROL (IF USED) LIMIT CONTROL TH1 TH2 PP PP MILLIVOLT GENERATOR M20438A Fig. 5. Typical hookup to TS812A in millivolt system. T812B THERMOSTAT WR TO 12 Vdc 1 POWER SUPPLY GAS VALVE 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M20439 Fig. 6. T812B in 12 Vdc application. T812, TS812 THERMOSTATS T812C THERMOSTAT RWY G 1 L1 L2 HEAT FAN COOL 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M20440 Fig. 7. T812C in heating and cooling system. T812D THERMOSTAT R Y 1 L1 L2 COOL 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M20441 Fig. 8. T812D in cooling only application. 3 69-1606ESF-3