Honeywell T7351F2010 Installation Instructions - Page 11

WIRING DIAGRAMS T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT GND SENSOR SET PT LED BYPASS TR23-H REMOTE SENSOR 1 2 3 4 5 6 7 8 9 10 11 12 OUTDOOR AIR SENSOR DISCHARGE AIR SENSOR COMPRESSOR CONTACTOR 2 AUX HEAT STAGE 1 SUBBASE T5 T6 T7 T4 T3 OS OS AS AS W2 W1 Y2 4 HS HC HP M M X RH RC AUX O/B Y1 G 2 HUMIDITY SENSOR MOTION SENSOR CHANGEOVER FAN RELAY COMPRESSOR 3 CONTACTOR 1 1 L2 L1 (HOT) HEATING TRANSFORMER ECONOMIZER L2 1 L1 (HOT) COOLING TRANSFORMER 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER. 3 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS. 4 WHEN USING THE TR23-H FOR HUMIDITY SENSING, THERE IS NO NEED TO WIRE THE HC TERMINAL BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1 COMMON AT THE SENSOR. M29323 Fig. 7. Typical hookup of T7351F2010 in two-stage heat and two-stage cool heat pump system with two transformers. GND SENSOR SET PT LED BYPASS TR23-H REMOTE SENSOR 1 2 3 4 5 6 7 8 9 10 11 12 OUTDOOR AIR SENSOR HEAT RELAY 2 DISCHARGE AIR SENSOR COMPRESSOR CONTACTOR 4 COMPRESSOR CONTACTOR 2 SUBBASE T5 T6 T7 T4 T3 OS OS AS AS W3/Y4 Y3 W2 Y2 HS HC HP M M X RH RC AUX W1 Y1 G 5 HUMIDITY SENSOR MOTION SENSOR 3 HEAT FAN RELAY 1 RELAY COMPRESSOR CONTACTOR 3 1 2 L2 L1 (HOT) COMPRESSOR CONTACTOR 1 4 ECONOMIZER 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD. 3 HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER. 4 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS. 5 WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1 COMMON AT THE SENSOR. M29254 Fig. 8. Typical hookup of T7351F2010 in two-stage heat and four-stage cool conventional system. 11 62-0258-05