Honeywell T7351F2010 Installation Instructions - Page 3

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Wiring Follow equipment manufacturer wiring instructions when available. Refer to the Wiring Diagram section for typical hookups. A letter code is located near each terminal for identification. IMPORTANT All wiring must comply with local electrical codes and ordinances. Setting Temperature Refer to Table 2 for the default temperature setpoints. To set the Occupied and Not Occupied Heat and Cool setpoints, simply press the Heat and Cool button under the Occupied or Not Occupied area of the keypad. To set the Standby Heat setpoint, press both the Occupied and Not Occupied Heat buttons simultaneous. To set the Standby Cool setpoint, press the Occupied Cool and Not Occupied Heat buttons simultaneously. NOTE: Maximum (and recommended) wire size is 18gauge. Do not use wire smaller than 22-gauge. 1. Loosen subbase terminal screws and connect system wires. 2. Securely tighten each terminal screw. 3. Push excess wire back into the hole in the wall. 4. Plug the hole with nonflammable insulation to pre- vent drafts from affecting the thermostat. SETTINGS Using Thermostat Keys The thermostat keys are used to: • set current time and day, • program times and setpoints for heating and cooling, • override the program temperatures, • display present setting, • set system and fan operation. NOTE: See Fig. 5 for keypad information. Setting System and Fan System default setting is Auto. Fan default setting is On. NOTE: Use System and Fan keys to change settings. System Settings - Auto: Thermostat automatically changes between heating and cooling based on indoor temperature. - Cool: Thermostat controls cooling. - Off: Heating, cooling, and fan are all off. - Heat: Thermostat controls heating. - Em Heat: Auxiliary heat serves as first stage. Compressor stages are locked off. Fan Settings - On: See Table 1. - Auto: Fan always cycles with call for heat or cool. - Conventional: The equipment (i.e. plenum switch) controls fan operation in heat mode. Thermostat controls fan operation in cool mode. - Electric Heat: Thermostat controls fan operation in both heat and cool modes. NOTES: Fan operation can extend (delay Off) after the heating/cooling turns off: - Heating choices are 0 or 90 seconds. - Cooling choices are 0 or 40 seconds. Table 1. T7351 Intelligent™ Fan ON control logic Occupancy Call for Heat/Cool Scheduled Motion Sensor Effective Period Signal Occupancy Yes No Notes Occupied No Sensor Wired Occupied Fan On Fan On Occupied Motion Sensed Occupied Fan On Fan On Occupied No Motion Sensed Standby Effective Occupancy is Standby. Standby Fan On Fan Offa setpoints are used and it assumes that the space is unoccupied. Fan is on only when there is a call for heating or cooling. Not Occupied No Sensor Wired Not Occupied Fan On Fan Offa Occupancy sensor will only be active during Not Occupied Motion Sensed Not Occupied Fan On Fan Offa scheduled Occupied periods. During scheduled Not Occupied periods, the effective occupancy Not Occupied No Motion Sensed Not Occupied Fan On Fan Offa will always be Not Occupied. a In heat mode, when set for conventional heat, the equipment (i.e. plenum switch) could power the fan despite the T7350 3 62-0258-05