Installation Instructions
Page 1
... in these instructions carefully. OR MULTI-STAGE CONVENTIONAL/HEAT PUMP SYSTEMS APPLICATION The T7351 Commercial Programmable Thermostat controls 24 Vac commercial single zone heating, ventilating and air conditioning (HVAC) equipment. If you have questions, call Honeywell Customer Care Center at average temperature. (See Fig. 1.) WHEN NOT USED TO SENSE ROOM TEMPERATURE When...
... in these instructions carefully. OR MULTI-STAGE CONVENTIONAL/HEAT PUMP SYSTEMS APPLICATION The T7351 Commercial Programmable Thermostat controls 24 Vac commercial single zone heating, ventilating and air conditioning (HVAC) equipment. If you have questions, call Honeywell Customer Care Center at average temperature. (See Fig. 1.) WHEN NOT USED TO SENSE ROOM TEMPERATURE When...
Installation Instructions
Page 2
... 2.4 in. (60.3 mm) between mounting screws in . (5.6 mm) holes. 4. Loosely insert the mounting screws into the thermostat top. 2. then remove the top. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Mounting Subbase The subbase mounts horizontally. Mounting to mark the mounting holes. (See Fig. 3). 3. by 4 in . Position ...the subbase over the holes, pulling wires through the wiring opening. 6. Mounting the subbase. NOTE: To remove the thermostat from the wall and drill two 3/ 16 in. (4.8 mm) holes in the wall (if drywall) as plaster or wood, drill two 7/32 in ...
... 2.4 in. (60.3 mm) between mounting screws in . (5.6 mm) holes. 4. Loosely insert the mounting screws into the thermostat top. 2. then remove the top. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Mounting Subbase The subbase mounts horizontally. Mounting to mark the mounting holes. (See Fig. 3). 3. by 4 in . Position ...the subbase over the holes, pulling wires through the wiring opening. 6. Mounting the subbase. NOTE: To remove the thermostat from the wall and drill two 3/ 16 in. (4.8 mm) holes in the wall (if drywall) as plaster or wood, drill two 7/32 in ...
Installation Instructions
Page 3
...only be Not Occupied. Setting Temperature Refer to change settings. vent drafts from affecting the thermostat. Off: Heating, cooling, and fan are locked off. Thermostat controls fan operation in the wall. 4. Setting System and Fan System default setting is ... set the Standby Cool setpoint, press the Occupied Cool and Not Occupied Heat buttons simultaneously. Fan Settings - T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Wiring Follow equipment manufacturer wiring instructions when available. Compressor stages are all off : - NOTE: Maximum (and recommended) wire size...
...only be Not Occupied. Setting Temperature Refer to change settings. vent drafts from affecting the thermostat. Off: Heating, cooling, and fan are locked off. Thermostat controls fan operation in the wall. 4. Setting System and Fan System default setting is ... set the Standby Cool setpoint, press the Occupied Cool and Not Occupied Heat buttons simultaneously. Fan Settings - T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Wiring Follow equipment manufacturer wiring instructions when available. Compressor stages are all off : - NOTE: Maximum (and recommended) wire size...
Installation Instructions
Page 4
...Installer Setup will show all segments (see Fig. 6). Fan must be changed. To return to be configured correctly to the thermostat, the display will display WAIT and is first applied to prevent equipment damage caused by the system running when system is automatically ...exited after power up. b. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Occupied HEAT Temperature COOL Not Occupied HEAT COOL Set Day/Time Day Time Override Temporary Temporary Occupied Not Occupied Schedule Clear...
...Installer Setup will show all segments (see Fig. 6). Fan must be changed. To return to be configured correctly to the thermostat, the display will display WAIT and is first applied to prevent equipment damage caused by the system running when system is automatically ...exited after power up. b. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Occupied HEAT Temperature COOL Not Occupied HEAT COOL Set Day/Time Day Time Override Temporary Temporary Occupied Not Occupied Schedule Clear...
Installation Instructions
Page 5
...(Remote Sensor, Remote Setpoint, Bypass 0) 3: T7771 (Remote sensor, Remote Setpoint, Bypass 1) (Bypass 0 means that by pressing the override button the thermostat goes from unoccupied to occupied and the LED will light up and the temporary occupied timer will be used as 4th stage relay) (Not available...Board Sensor 2: Remote Sensor Occupancy Sensor Selection 0: None 1: Remote Occ Sensor Fan Operation on Heat 0: Conventional (Equipment controls Fan) 1: Electric (Thermostat turns on Fan with call for Heat) Extended Fan on Heat NO: None YES: 90 seconds Extended Fan on call for heat) Number of...
...(Remote Sensor, Remote Setpoint, Bypass 0) 3: T7771 (Remote sensor, Remote Setpoint, Bypass 1) (Bypass 0 means that by pressing the override button the thermostat goes from unoccupied to occupied and the LED will light up and the temporary occupied timer will be used as 4th stage relay) (Not available...Board Sensor 2: Remote Sensor Occupancy Sensor Selection 0: None 1: Remote Occ Sensor Fan Operation on Heat 0: Conventional (Equipment controls Fan) 1: Electric (Thermostat turns on Fan with call for Heat) Extended Fan on Heat NO: None YES: 90 seconds Extended Fan on call for heat) Number of...
Installation Instructions
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T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 3. F 5: 5 Deg. F 4: 4 Deg. F 3: 3 Deg. F Temporary Occupied Duration 1 to 8 hours Temporary Display Adjustment 0 - 3 = 0 to 3 DDF 4 - 7 = -4 to -1 DDF Min Cool Setpoint Max Heat Setpoint Heating Lockout (Only ...
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 3. F 5: 5 Deg. F 4: 4 Deg. F 3: 3 Deg. F Temporary Occupied Duration 1 to 8 hours Temporary Display Adjustment 0 - 3 = 0 to 3 DDF 4 - 7 = -4 to -1 DDF Min Cool Setpoint Max Heat Setpoint Heating Lockout (Only ...
Installation Instructions
Page 7
... temporary change in the following manner: 1. When setting times or temperatures, hold key down to set the month, then press the key. 4. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Text Default Choices DSTMON1 3 DSTDAY1 40 0 - 12 0 - 31, 32 - 74 DSTMON2 11 DSTDAY2 33 0 - 12 0 - 31, 32 - 74 HT RESP 1 0 - 3 CL RESP 0 0 - 1 Table 3. Installer Setup...
... temporary change in the following manner: 1. When setting times or temperatures, hold key down to set the month, then press the key. 4. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Text Default Choices DSTMON1 3 DSTDAY1 40 0 - 12 0 - 31, 32 - 74 DSTMON2 11 DSTDAY2 33 0 - 12 0 - 31, 32 - 74 HT RESP 1 0 - 3 CL RESP 0 0 - 1 Table 3. Installer Setup...
Installation Instructions
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... restore the factory schedule, press up or down until the display indicates YES. To cancel this option, ensure the display indicates NO. 3. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Grouping Temperature Set Override Schedule Table 5. Temporary occupied setting for length of days ("0"-"99"), or "---" for specified day. User selects number of time defined by...
... restore the factory schedule, press up or down until the display indicates YES. To cancel this option, ensure the display indicates NO. 3. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Grouping Temperature Set Override Schedule Table 5. Temporary occupied setting for length of days ("0"-"99"), or "---" for specified day. User selects number of time defined by...
Installation Instructions
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...set point from saved memory, overwriting the schedule currently in that utilize the auxiliary output. The display gives the option to check the thermostat configurations and operation. To retrieve the saved schedule, press up or down until the display indicates YES. Minimum On. - Selecting both... are used to control another device. a. a. To cancel this behavior does not change with no key pressed. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Test Mode (Occupied/Not Occupied/ Schedule Day) CAUTION Possible Equipment Damage. Hysteresis and a minimum timer are : -
...set point from saved memory, overwriting the schedule currently in that utilize the auxiliary output. The display gives the option to check the thermostat configurations and operation. To retrieve the saved schedule, press up or down until the display indicates YES. Minimum On. - Selecting both... are used to control another device. a. a. To cancel this behavior does not change with no key pressed. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Test Mode (Occupied/Not Occupied/ Schedule Day) CAUTION Possible Equipment Damage. Hysteresis and a minimum timer are : -
Installation Instructions
Page 10
... short cycling of this output. 62-0258-05 10 Table 6. Multiple cooling stages probably provide necessary dehumidification. 3. Hot Gas Bypass Dehumidification Logic. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Dehumid Hot Gas BP The auxiliary output operates as shown in Table 6. Humidity Cooling Stages Active Auxiliary Output High more than one De-energized High...
... short cycling of this output. 62-0258-05 10 Table 6. Multiple cooling stages probably provide necessary dehumidification. 3. Hot Gas Bypass Dehumidification Logic. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Dehumid Hot Gas BP The auxiliary output operates as shown in Table 6. Humidity Cooling Stages Active Auxiliary Output High more than one De-energized High...
Installation Instructions
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Typical hookup of T7351F2010 in two-stage heat and four-stage cool conventional system. 11 62-0258-05 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 WHEN INSTALLED ON A ... TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1 COMMON AT THE SENSOR. Typical hookup of T7351F2010 in two-stage heat and two-stage cool heat pump system with two transformers. 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...
Typical hookup of T7351F2010 in two-stage heat and four-stage cool conventional system. 11 62-0258-05 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 WHEN INSTALLED ON A ... TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1 COMMON AT THE SENSOR. Typical hookup of T7351F2010 in two-stage heat and two-stage cool heat pump system with two transformers. 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...
Installation Instructions
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... circuit is present, proceed with one transformer. Typical hookup of control. powered. Relocate the thermostat. Check all systems shut down). Remote temperature sensing is out of T7351F2010 in the Off position; PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 ENSURE TRANSFORMER ...sign either open or shorted. (all remote sensors. 62-0258-05 12 Press both Run Schedule and Copy, then reconfigure the display. 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 ...
... circuit is present, proceed with one transformer. Typical hookup of control. powered. Relocate the thermostat. Check all systems shut down). Remote temperature sensing is out of T7351F2010 in the Off position; PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 ENSURE TRANSFORMER ...sign either open or shorted. (all remote sensors. 62-0258-05 12 Press both Run Schedule and Copy, then reconfigure the display. 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 ...
Installation Instructions
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... if so, replace fuse. • Check if the HVAC equipment power switch is activated. • Configure cooling response. Thermostat minimum off • Wait up to respond. System selection is coming from the registers. Replace broken wires and tighten loose connections.... System indicator The call for 24 Vac between X and RH terminals. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 7. Thermostat minimum off • Wait up to respond. Off or Heat. Troubleshooting Information. (Continued) Symptom Possible Cause Action Heat...
... if so, replace fuse. • Check if the HVAC equipment power switch is activated. • Configure cooling response. Thermostat minimum off • Wait up to respond. System selection is coming from the registers. Replace broken wires and tighten loose connections.... System indicator The call for 24 Vac between X and RH terminals. T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 7. Thermostat minimum off • Wait up to respond. Off or Heat. Troubleshooting Information. (Continued) Symptom Possible Cause Action Heat...
Installation Instructions
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T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 62-0258-05 14
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 62-0258-05 14
Installation Instructions
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T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 15 62-0258-05
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 15 62-0258-05
Installation Instructions
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T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Rev. 09-10 Printed in U.S.A. Registered Trademark © 2010 Honeywell International Inc. 62-0258-05 M.S.
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Rev. 09-10 Printed in U.S.A. Registered Trademark © 2010 Honeywell International Inc. 62-0258-05 M.S.
