Honeywell 63-2666-03 - Manuals

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—03 6 a Factory jumper between RC and RH for systems with one transformer. b For changeover functional details, see Operation section. c HC connection is not needed when using a TR23-H sensor. Mounting Thermostat on Subbase (Fig. 7) With the subbase in...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 7 63-2666—03 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. ...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—03 8 a In heat mode, when set for conventional heat, the equipment (i.e. plenum switch) could power the fan despite the T7350. Fig. 8. Thermostat Key Locations. INSTALLER SETUP For most applications, the thermostat factory settings do not need to be c...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 9 63-2666—03 a. If you want to save the new configuration, use the up  or down  key to change NO to YES before pressing Run Schedule . b. If you want the configuration to remain as it was before starting this change, ensure the display indicates SAV CFG NO ...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 11 63-2666—03 Holidays and 365 - Day Clock The T7351can be configured to schedule up to 10 separate holidays, each with a duration of up to 99 days. To enable this function, the user must set the date: 1. Press Set Day and Set Time keys simultaneously. 2. Use...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 13 63-2666—03 a On: Continuous fan operation during occupied periods. During not occupied periods and in standby mode when no motion is sensed, fan cycles with call for heat or cool. Auto: Fan cycles with call for heat or cool during all periods. (See Product...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—03 14 T7351 Relay Logic All T7351 model thermostats contain at least four switching relays. In conventional applications, the relays control first stage cooling, first stage heating, fan, and auxiliary. In heat pump applications, the relays control th...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 15 63-2666—03 — Recovery ramping applies between scheduled heat or cool setpoint changes from not occupied to standby and not occupied to occupied. — Other setpoint changes use a setpoint step change. Recovery Ramping for Heat Pump Systems During recovery wit...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—03 16 The potentiometer adjusts the minimum position of the economizer dampers, which provide a minimum amount of fresh air for ventilation. The economizer reduces compressor run time, thereby saving energy and extending compressor life. The drawback ...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 17 63-2666—03 Table 9. Default Auxiliary Relay Operations. a Simple dehumidification uses a normally closed contact. The relay is closed when humidity is below the high limit. When the humidity is above the high limit, the contact is open. Dehumidification Th...

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Automation and Control Solutions Honeywell International Inc.1985 Douglas Drive NorthGolden Valley, MN 55422customer.honeywell.com ® U.S. Registered Trademark© 2013 Honeywell International Inc.63-2666—03 M.S. Rev. 12-13Printed in United States Fig. 15. Typica...