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Honeywell T7350A User Manual Download Page 29

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

29

63-2605—09

Fig. 21. Typical hookup of T7350D in two-stage heat and four-stage cool conventional system.

Fig. 22. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system with one 

transformer.

POWER SUPPLY.  PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

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.

1

M29254

2

3

2

3

4

RC

X

SUBBASE

W1

G

Y1

W3/Y4 Y3

W2

Y2

AUX

RH

T5

T6

T7

T4

T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

M

OS

OS

AS

AS

M

HC

HP

HS

1

4

L1

(HOT)

L2

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEAT

RELAY 1

FAN

RELAY

ECONOMIZER

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 3

COMPRESSOR

CONTACTOR 4

TR23-H REMOTE SENSOR

9

8

7

6

5

4

3

2

1

10 11 12

GND

SENSOR

SET

 PT

LED

BYP

ASS

5

5

POWER SUPPLY.  PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

1

M32145

2

3

2

3

4

RC

AUX

X

SUBBASE

W1

G

Y1

W3/Y4 Y3

W2

Y2

AUX

RH

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

M

OS

OS

AS

AS

M

EB

EB

1

4

L1

(HOT)

L2

L

ON

W

ORKS

®

 BUS

COMPRESSOR

CONTACTOR 1

COMPRESSOR

CONTACTOR 2

HEAT

RELAY 1

FAN

RELAY

ECONOMIZER

HEAT

RELAY 2

COMPRESSOR

CONTACTOR 3

HEAT

RELAY 3

L

ON

W

ORKS

®

 BUS

T5

T6

T7

T4

T3

HUMIDITY

SENSOR

HC

HP

HS

TR23-H REMOTE SENSOR

9

8

7

6

5

4

3

2

1

10 11 12

GND

SENSOR

SET

 PT

LED

BYP

ASS

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

5

Summary of Contents for T7350A

Page 1: ... TStatSpec software or PDA Individual heat and cool setpoints available for Occupied and Not Occupied periods P I D control minimizes temperature fluctuations Recovery ramp control automatically optimizes equipment start times based on building load Convenient overrides allow temporary setpoint changes Keypad multi level lockout available with all models Remote sensor capability for temperature in...

Page 2: ...setpoint Additional standby period used in low traffic areas Sequential start option Discharge air high low limits Selectable recovery ramp Ambient lockout with outdoor sensor System monitoring Application database with download and storing Features via Optional Network Model H Communications on LonTalk network Network Tools LonSpec CARE have ability to configure all PDA available features T7350 N...

Page 3: ...um terminating resistance System Current Draw without load 5 VA maximum at 30 Vac 50 60 Hz NOTE Relays are N O Single Pole Single Throw SPST Outdoor Sensor Wiring Requires 18 gauge wire Humidity Ratings 5 to 90 RH noncondensing Emergency Heat Indication Display indicates when Emergency Heat is activated Em Temperature Ratings Operating Ambient 30 F to 110 F 1 C to 43 C Shipping 30 F to 150 F 34 C ...

Page 4: ... W7210 W7212 W7215 W7459 Humidity Sensors H7625 H7635 PDA Units Palm V M125 and i705 handhelds TRGPro handheld ZIRE 71 handheld TUNGSTEN T handheld Others 209541B FTT network termination module 209651A Vertical Mounting Hardware Wallplate Adapter Trident white 50000083 001 Thermostat Interface Module TIM 50014064 001 Infra Red TIM 50000452 001 Troubleshooting Cable AK3797 Single pair network cable...

Page 5: ...hed M22431 SNVT_time_sec SNVT_time_sec SNVT_temp_setpt SNVT_time_min UCPTconfig UCPTconfigPts UCPTdaylightSav UCPTschedule0 UCPTschedule1 UCPTschedule2 UCPTschedule3 UCPTschedule4 UCPTschedule5 UCPTschedule6 UCPTschedule7 UCPTholSched mandatory optional mandatory optional manf specific manf specific manf specific manf specific manf specific manf specific manf specific manf specific manf specific m...

Page 6: ... for setting and adjusting the temperature and settings CAUTION Equipment Damage Hazard Can damage the TIM connection beyond repair Disconnect the TIM cable prior to opening 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 5m above the floor in an area with good air circulation at average ...

Page 7: ...mounting screws into the holes 7 Tighten mounting screws Fig 4 Four TR21 Sensors providing a temperature averaging network for T7350 Thermostat Fig 5 Two TR 21A Sensors providing a temperature averaging network for T7350 Thermostat Fig 6 Nine TR21 Sensors providing a temperature averaging network for T7350 Thermostat Fig 7 Mounting the subbase M29184 T4 T3 T T SUBBASE TR21 T T TR21 T T TR21 T T TR...

Page 8: ...n section Terminal Description Conventional Heat Pump RCa RCa 24 VAC Cooling transformer RHa RHa 24 VAC Heating transformer X X Common G G Fan relay aux aux Conventional Auxiliary relay or 2nd Stage of heating or cooling relay Heat Pump Auxiliary relay or 1st Stage auxiliary heat relay W1 O B Conventional Stage 1 heating relay Heat Pump Changeover relay for heating B or cooling O b Y1 Y1 Conventio...

Page 9: ...entional Stage 3 heat or stage 4 cool relay Heat Pump 2nd Stage auxiliary heat relay Y3 Conventional Stage 3 cooling relay HS HS Humidity Sensor connection signal 0 10 Vdc HC HC Humidity Sensor connection common HP HP Humidity Sensor connection power M M Motion Sensor connection 1 M M Motion Sensor connection 2 Terminal Description Conventional Heat Pump RCa RCa 24 VAC Cooling transformer RHa RHa ...

Page 10: ... Outdoor Air Sensor connection 2 G Fan relay T3 TR20 Series remote sensor connection GND T4 TR20 Series remote sensor connection Sensor T5 TR20 Series remote sensor connection Set Pt T6 TR20 Series remote sensor connection Bypass T7 TR20 Series remote sensor connection LED HS Humidity Sensor connection signal 0 10 Vdc HC Humidity Sensor connection common HP Humidity Sensor connection power M Motio...

Page 11: ...cycles with call for heating or cooling Conventional The equipment i e plenum switch controls fan operation in heat mode The thermostat controls fan operation in cool mode Electric Heat The thermostat controls fan operation in both heat and cool modes NOTE 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 ...

Page 12: ...OTE Pressing Run Copy again while in this mode displays the T7350 firmware version number 3 To return to a Setup item cycle through the options 4 To change a setting use the up or down key 5 To exit the Installer Setup press Run Schedule 6 The display prompts SAV CFG save configuration System Fan Run Schedule Copy Not Occupied Occupied Day Clear Start Time Day Time Temperature Temporary Occupied O...

Page 13: ...ngs as desired 4 Click on the Configuration ID button on the bottom left of the configuration screen 5 Make note of the values 6 Press both Copy and Run Schedule on the thermostat 7 Tap until C1 appears on the right end of the display 8 Adjust each variable to match the PDA indication a Hold down the up or down key to adjust the value quickly b Tap the the up or down key for fine control 9 Press t...

Page 14: ...sed Save User Schedule Info Copy Performing this operation saves the current schedule including holidays to memory overwriting the old saved schedule 1 Press both Info and Copy 2 The display gives the option to SAV SHD a To save the current schedule press up or down until the display indicates YES b To cancel this option ensure display indicates NO 3 Press Run Schedule Get User Schedule Info Run G...

Page 15: ...y change in temperature setpoint Temperature Occupied Heat Sets Occupied Heat setpoint Occupied Cool Sets Occupied Cool setpoint Not Occupied Heat Sets Not Occupied Heat setpoint Not Occupied Cool Sets Not Occupied Cool setpoint Set Day Sets day of week Tapping key with Set Value segment on increases current day same effect as Up Arrow key Time Sets time Tapping key with Set Value segment on incre...

Page 16: ...NOTES To allow keypad day changes use a PDA or TStatSpec as follows 1 Go to the Set Clock function 2 Change the Date Mode from MM DD YYYY to Day of Week 3 Press Set When using the keypad to change the day time 1 Press Set Day until the current day is displayed NOTE Sun Sunday Mon Monday Tue Tuesday Wed Wednesday Thu Thursday Fri Friday Sat Saturday 2 Press Set Time 3 Press up or down until the cur...

Page 17: ...Setpoint is limited by Occupied Cool Setpoint 2 F 1 C 4 The Minimum Occupied Cool Setpoint is limited by the Occupied Heat Setpoint 2 F 1 C Programming Temperature Setpoints 1 Press Occupied Heat 2 Press up or down until the desired temperature is displayed 3 Press Occupied Cool 4 Press up or down until the desired temperature is displayed 5 Press Not Occupied Heat 6 Press up or down until the des...

Page 18: ...ry Not Occupied Override fixes the device to operate in Not Occupied mode for a number of days between 1 and 99 without changing programming saved in memory NOTES If the number of days is set to zero no temporary change takes effect If the number of days is set just below zero the display for days is an indefinite override To turn off this override you must press Run Schedule 1 Press Temporary Not...

Page 19: ...or incorporates cycle rate and minimum on and off times for all heating and cooling stages This extends equipment life as it prevents rapid cycling of equipment NOTE Minimum on and off times are fixed Cycle Rates The thermostat control algorithm maintains the temperature by cycling stages of heating or cooling to meet setpoint Cycle rates in cycles per hour cph are set using a PDA or TStatSpec sof...

Page 20: ... occupied Other setpoint changes use a setpoint step change Recovery Ramping for Heat Pump Systems During recovery with heat pump equipment the heating setpoint is split into a heat pump setpoint for compressors and two auxiliary heat setpoints for the auxiliary heat stages See Fig 12 for the various setpoints Fig 12 Heat setpoint ramping for heat pump systems Heat pump ramping for heating proceed...

Page 21: ...e needed at all particularly during Spring and Fall Economizers take advantage of outside air The typical economizer consists of an outside air damper motor outdoor air changeover control and a minimum position potentiometer The motor controls the dampers Suitability of the outside air for cooling is determined by the outdoor air changeover control The potentiometer adjusts the minimum position of...

Page 22: ...l or Heat Pump operation See Table 17 for details NOTE The default functions cannot be modified They are limited to firmware version 1 3 0 or higher Table 16 Auxiliary Relay Logic Economizer and TOD Occupancy Auxiliary Contacts Scheduled Period Motion Sensor Signal Effective Occupancy Economizer TOD Occupied No Sensor Wired Occupied Closedb Closed Occupied Motion Sensed Occupied Closedb Closed Occ...

Page 23: ...as Heat or Cool Stage Contact Configuration of Contact Not Used as Stage Heat Pump terminal between W1 and W2 terminals Simple Dehumidificationa Simple Dehumidificationa Time of Day Time of Day W2 not aux heat Economizer Time of Day Economizer Economizer Conventional W3 not Simple Dehumidificationa Simple Dehumidificationa Simple Dehumidificationa Time of Day Y3 not W3 not Economizer Time of Day T...

Page 24: ...at stage never energizes during Reheat if more than one cool stage is on Reheat mode cannot occur during heating The T7350H1017 T7350M do not support the Reheat method RESET TEMP SETPT The room temperature set point resets to a specified number of degrees below the actual set point when room relative humidity RH rises above humidity high limit Though this may not technically reduce RH it reduces t...

Page 25: ...eating limits are 40 to 90 F 7 to 31 C Cooling limits are 45 to 99 F 9 to 37 C Occupied setpoint temperature range stops were configured Using a PDA or TStatSpec software check setpoint stops If necessary reconfigure the stop s Keypad is locked When a locked key is pressed LOCKED appears momentarily on the LCD Use PDA Set Display or TStatSpec software to unlock keypad Press both Run Schedule and C...

Page 26: ...AT lockout is engaged If the setpoints are correct do nothing Use PDA Cooling Config or TStatSpec software to adjust or disable DAT low limit and or OAT lockout Check HVAC equipment to ensure proper operation System indicator flame heat snowflake cool is displayed but no warm or cool air is coming from the registers The call for heat or cool is not yet given Check if any stage indicators dots next...

Page 27: ...1 AUX RH 1 L1 HOT L2 1 L1 HOT L2 COMPRESSOR CONTACTOR 1 HEATING TRANSFORMER COOLING TRANSFORMER FAN RELAY HEAT RELAY 2 HEAT RELAY 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS 1 M32140 2 2 3 RC X W1 G Y1 W2 Y2 AUX RH DISCHARGE AI...

Page 28: ...N RELAY ECONOMIZER AUX HEAT STAGE 1 SUBBASE T5 T6 T7 T4 T3 TR23 REMOTE SENSOR 9 8 7 6 5 4 3 2 1 10 11 12 GND SENSOR SET PT LED BYPASS POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD HEAT COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY INSTALLED JUMPER USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS NO NEED TO WI...

Page 29: ...COMPRESSOR CONTACTOR 1 COMPRESSOR CONTACTOR 2 HEAT RELAY 1 FAN RELAY ECONOMIZER HEAT RELAY 2 COMPRESSOR CONTACTOR 3 COMPRESSOR CONTACTOR 4 TR23 H REMOTE SENSOR 9 8 7 6 5 4 3 2 1 10 11 12 GND SENSOR SET PT LED BYPASS 5 5 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD HEAT COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY ...

Page 30: ... EB T5 T6 T7 T4 T3 HUMIDITY SENSOR HC HP HS TR23 H REMOTE SENSOR 9 8 7 6 5 4 3 2 1 10 11 12 GND SENSOR SET PT LED BYPASS 4 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 4 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ENSURE TRANSFORMER...

Page 31: ...DIRECTIONS 1 M32143 2 2 3 RC X SUBBASE W1 G Y1 MH MC AUX RH DISCHARGE AIR SENSOR OUTDOOR AIR SENSOR MOTION SENSOR M OS OS AS MX AS M 1 3 L1 HOT HEATING TRANSFORMER COOLING TRANSFORMER L2 1 L1 HOT L2 COMPRESSOR CONTACTOR 1 HEAT RELAY 1 FAN RELAY ECONOMIZER MODULATING HEAT 4 20 mA MODULATING COOL 4 20 mA R X R X T5 T6 T7 T4 T3 HUMIDITY SENSOR HC HP HS TR23 H REMOTE SENSOR 9 8 7 6 5 4 3 2 1 10 11 12 ...

Page 32: ...ure is the same OFFLINE CONFIGURATION While disconnected from the thermostat you can arrange and save named configurations NOTE The user can note the Configuration ID and manually set the code using the T7350 user interface CONNECT AND CONFIGURE Connect to a thermostat and configure device with existing named parameter arrangement configure device by changing all parameters read the existing confi...

Page 33: ...onfiguration Summary screen 6 Make changes and tap Next to proceed to the Inputs screen 7 The Inputs screen facilitates changes to a RoomTemp erature b Room Rel ative Humidity c Occ upancy Sensor d Discharge Air Temp erature e Outdoor Air Temp erature NOTE Some selections only appear for the models that support them Fig 30 Inputs screen 8 Make changes and tap Next NOTE Novice navigation to the Deh...

Page 34: ...ilitates changes to a Fan Switch On or Auto b Fan Operation Conventional or Electric Heat c Heat and cool extended operation Fig 35 Fan screen 18 Make changes and tap Next to proceed to the Weekly Schedule screen NOTE The only schedule days times displayed are those in the program It is possible to have as many as 4 event times per day for each day including holiday programmed into each set 19 The...

Page 35: ...s C1 C2 C3 C4 C5 C6 C7 C8 that can be input using the T7350 keypad NOTE The configuration numbers determine all but the schedule and setpoints 27 To return to the Home Screen tap the Menu icon lower left hand corner silk screen and tap Set Home Fig 42 Summary screen with configuration numbers Deleting Configurations 1 Make certain you are in a configuration other than the one you plan to delete 2 ...

Page 36: ...move a given holiday change the Start Month to None and tap OK The title will remain but the holiday will not operate c Start Day d Duration NOTE To remove all evidence of a given holiday change Title to Hol Start Month and Start Day to None Duration to 0 and tap OK e Spin Speed NOTE Spin Speed determines the increment change 1X or 10X for Start Day and Duration The spin speed setting is local for...

Page 37: ...n this setpoint Range 40 to 120 F Cool Output stages a X X Stages of cool conventional or number of compressor stages heat pump Cooling Response 3 cph X X 3 cph Standard response for cooling system 4 cph Fast response for cooling system Cooling response applies to compressors in heat pump applications Cooling Lockout None X X None No OAT lockout for cool Enable Cool locked out when OAT is less tha...

Page 38: ...s features are never locked out Recovery Heat RampMin 5 F hr X Minimum heating recovery ramp rate Range 0 to 20 F hr Recovery Heat RampMax 8 F hr X Maximum heating recovery ramp rate Range 0 to 20 F hr Recovery Cool RampMin 3 F hr X Minimum cooling recovery ramp rate Range 0 to 20 F hr Recovery Cool RampMax 6 F hr X Maximum heating recovery ramp rate Range 0 to 20 F hr Recovery Heat OAT Min 0 F X ...

Page 39: ...top 55 F X Occupied Minimum Heat Setpoint Lowest the programmed occupied heating setpoint can be adjusted Range 40 to 90 F Value OccHt OccCl 2 F Occupied Cool Setpt Stop 85 F X Occupied Maximum Cool Setpoint Highest the programmed occupied cooling setpoint can be adjusted Range 45 to 99 F Value OccCl OccHt 2 F Not Occupied Heat Setpoint 55 F X X Not Occupied heating setpoint Range 40 to 90 F Unocc...

Page 40: ...iolate Not Occupied setpoint relationship The T7350 algorithm never allows the effective setpoint outside Not Occupied setpoints ZIRE and TUNGSTEN are trademarks of palmOne Inc LonMark LonTalk Echelon and LonWorks are registered trademarks of Echelon Corporation Palm OS is a registered trademark of Palm Computing Inc Palm is a registered trademark of PalmSource Inc Table 21 Exceptions to Factory D...

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