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Manual Honeywell T7351

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  • Honeywell T7351 - page 1

    PRODUCT DAT A 63-2666-02 T7351 Commercial Programmable Thermost at FOR SINGLE- OR MULTI-STAGE CO NVENTIONAL/HEAT PUMP SYSTEMS APPLICATION The T7351 Commercial Programmable Thermostat controls 24 V ac commercial singl e zone heating, ventilating and ai r conditioning (HV AC) equipment. The T7351 consists of a thermostat and subbase. The thermostat i ...

  • Honeywell T7351 - page 2

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 ORDERING INFORMATION When purchasing replacement and modernizat io n products from your TRADELINE® whol esaler or distributor , refer to the TRADELINE® Catalog or price sheets for complete ordering number . If you have additional questions, need further information, or w oul d like to comment ...

  • Honeywell T7351 - page 3

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 3 63-2666—0 2 T able 2. Default Setpoints. Fig. 1. Thermost at and Subbase Dimensions in inches (mm). Accessories: Duct Discharge Air Sensors: C7041B (6 or 12 in . [152 or 305 mm]), C7041C (18 in. [457 mm]), C7041J (12 ft. [3.66 m] averaging), C7770A (8 in . [203 mm] probe) . Outdoor Air Sensors: C7089A, C ...

  • Honeywell T7351 - page 4

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 4 CAUTION Equipment Damage Hazard . Can damage the TIM connectio n beyond repair . Disconnect the TIM cable p rior to openi ng or closing the thermostat cover . NOTE: Allow sufficient clearance below the thermostat to plug in the TIM cable. Install the remote-mounted sensor(s) about 5 ft. (1.5 ...

  • Honeywell T7351 - page 5

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 5 63-2666—0 2 Fig. 5. Nine TR21 Sensors Providin g a T emperature A veraging Network for T7351 Therm ostat. Fig. 6. Mounting the Subbase. Wiri ng CAUTION Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment c ircuitry . Disconnect power supply before installation. IMPORTANT ...

  • Honeywell T7351 - page 6

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 6 a Factory jumper between RC and RH for syst ems with one transform er . b For changeover functional details, see Operation section. c HC connection is not needed when using a T R23-H sensor . Mounting Thermost at on Subbase (Fig. 7) With the subbase installed, mount the thermostat: 1. Engage ...

  • Honeywell T7351 - page 7

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 7 63-2666—0 2 a In heat mode, when set for conventional heat, the equipment (i .e. plenum switch) cou ld power the fan despite the T7350. Fig. 8. T hermost at Key Locations. INST ALLER SETUP For most applications, the ther mostat factory settings do not need to be charged. Review the factory settings in T ...

  • Honeywell T7351 - page 8

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 8 a. If you want to save the ne w configuration, use the up  or down  key to change NO to YES before pressing Run Schedule . b. If you wan t the configurat ion to remain as it was before starting this change, ensure the display indicates SA V CFG NO and press Run Schedule . NOTE: Installe ...

  • Honeywell T7351 - page 9

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 9 63-2666—0 2 OA TSENS 0 0 - 1 Outdoor Air Sensor Selection 0: None 1: Remote Outdoor Air Sensor DA TSENS 0 0 - 1 Discharge Air Sensor Selection 0: None 1: Remote Discharge Air Sensor HUMSENS 0 0 - 2 Room Humidity Sensor selection 0: None 1: On Board Sensor 2: Remote Sensor OCCSENS 0 0 - 1 Occupancy Sensor ...

  • Honeywell T7351 - page 10

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 10 Holidays and 365 - Day Clock The T7351can be configured to sche dule up to 10 separate holidays, each with a duration of up to 99 days. T o ena ble this function, the user must set the date: 1. Press Set Day and Set T i me keys simultaneously . 2. Use the Up/Down keys to se t the date to YES ...

  • Honeywell T7351 - page 11

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 11 63-2666—0 2 4. Use the Up/Down keys to set the day , then press the key (Refer to T abl e 6 for valid day choices). 5. Use the Up/Down keys to set the duration. The first holiday is now set and pressing th e key will take you to programming the second holiday (denoted by the number 2 on the screen) T ab ...

  • Honeywell T7351 - page 12

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 12 a On: Continuous fan operation during occu pied periods. During not o ccupied perio ds and in standby mode when no motion is sensed, fan cycles with ca ll for heat or cool. Auto: Fan cycles with call for heat or co ol during all periods. (See Product Data Sheet, form 63-2605, for more detail ...

  • Honeywell T7351 - page 13

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 13 63-2666—0 2 T7351 Relay Logic All T7351 model thermostats contain at least four switching relays. In conventional applicatio ns, the relays control first stage cooling, first stage heatin g, fan, and auxiliary . In heat pump applications, the rel ays control the heat pump compressor , changeover , fan, ...

  • Honeywell T7351 - page 14

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 14 — Recovery ramping applies between schedu led heat or cool setp oint changes from not occupi ed to standby and not occupied to occupied. — Other setpoint changes use a setpo int step change. Recovery Ramping for Heat Pump Systems During recovery with heat pum p equipment, the heatin g se ...

  • Honeywell T7351 - page 15

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 15 63-2666—0 2 control. The potentiometer adjus ts the minimum position of the economizer dampers, which pr ovide a minimum amou nt of fresh air for ventilation. The economizer reduces compre ssor run time, thereby saving energy and extending compressor life. The drawba ck to using the economi zer is that ...

  • Honeywell T7351 - page 16

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 16 T able 9. Default Auxiliary Relay Operations. a Simple dehumidification uses a normall y closed contact. The relay is closed when humidity is below the hig h limit. When the humidity is above the high limit, th e contact is open. Dehumidification There are five methods th rough which the T73 ...

  • Honeywell T7351 - page 17

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 17 63-2666—0 2 DEHUMID HOT GAS BP The auxiliary output operates as shown in T able 10. T able 10. Hot Gas Bypass Dehumidification Logic. Auxiliary output during call for multiple cooling stages for two reasons: 1. This method assumes that the cooling provide s dehumidificati on. 2. Multiple cooling stages ...

  • Honeywell T7351 - page 18

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—0 2 18 Heat will not come on. No power to the thermostat. Check that X terminal is connected to the system transformer . Check for 24 V ac between X and RH terminals. If missing 24 V ac: • Check if circuit breaker is tripped; if so, reset circuit breaker . • Check if system fuse is bl own; if s ...

  • Honeywell T7351 - page 19

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 19 63-2666—0 2 WIRING DIAGRAM (FIGURES 14 AND 15) Fig. 14. T ypical Hookup of T7 351F2010 in Three-Stage He at and Three-St age Cool Conventional Syste m with One T ransformer . Fig. 15. T ypical Hook up of T7351F2010 in T wo-Stage Heat and Four-St age Cool Conventional System. POWER SUPPL Y . PROVIDE DISC ...

  • Honeywell T7351 - page 20

    T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Automation and Control Solutions Honeywell Internationa l Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Dr ive Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered T rademark © 2010 Honeywell Internationa l Inc. 63-2666—02 M.S. Rev . 09 ...

Manufacturer Honeywell Category Thermostat

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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Honeywell T7351 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Honeywell T7351.

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2. Contents - index of all tips concerning the Honeywell T7351, that we can find in the current document
3. Tips how to use the basic functions of the device Honeywell T7351 - which should help us in our first steps of using Honeywell T7351
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Honeywell T7351
5. FAQ - Frequently Asked Questions
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