62-0195—08 - T7350 Commercial Programmable Thermostat
Contents
1. AS AS X RH e ul m ug HUMIDITY MOTION SENSOR SENSOR MODULATING R COOL 4 20mA X MODULATING R HEAT 4 20mA x M MX MH MC RC AUX W1 Yi L1 HOT ECONOMIZER HEATING TRANSFORMER COOLING A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER A USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS A 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 TRANSFORMER M32143 Fig 12 Typical hookup of T7350M in two stage heat one modulating and two stage cool one modulating conventional system 62 0195 08 with two transformers 10 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT TR23 H REMOTE SENSOR MODULATING R COOL 4 20mA X MODULATING R HEAT 4 20 mA X m m my HUMIDITY SENSOR LONWORKS BUS LONWORKS BUS JA L1 HOT COMPRESSOR CONTACTOR 1 ECONOMIZER HEATING COOLING TRANSFORMER TRANSFORMER A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER A USE2. See Fig 3 3 Remove the subbase from the wall and drill two 3 16 in 4 8 mm holes in the wall if drywall as marked For firmer material such as plaster or wood drill two 7 32 in 5 6 mm holes 4 Gently tap anchors provided into the drilled holes until flush with the wall 5 Position the subbase over the holes pulling wires through the wiring opening 6 Loosely insert the mounting screws into the holes 7 Tighten mounting screws WIRES THROUGH WALL MOUNTING A ns SCREWS M19608 Fig 3 Mounting the subbase Mounting Thermostat on Subbase Fig 4 With the subbase installed mount the thermostat 1 Engage top subbase tabs into the thermostat top 2 Swing the thermostat down 3 Press the lower edge of the case to latch NOTE To remove the thermostat from the wall first pull out at the bottom of the thermostat then remove the top Wiring Follow equipment manufacturer wiring instructions when available Refer to the Wiring Diagram section starting on page 8 for typical hookups A letter code is located near each terminal for identification IMPORTANT All wiring must comply with local electrical codes and ordinances NOTE Maximum and recommended wire size is 18 gauge 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 hol
3. number press NOTE Pressing Run Copy again while in this mode displays the T7350 firmware version number To return to a Setup item cycle through the options To change a setting use the up 4 or down key To exit the Installer Setup press Run Schedule Display prompts SAV CFG save configuration a If you want to save the new configuration use the up 4 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 and press Run Schedule mmsp 4 Once the proper option is chosen exit Installer 62 0195 08 NOTE Installer Setup is automatically exited after five minutes with no key pressed Upon this auto matic exit all changes are lost Configuration Limited configuration can be done with the keypad using the Configuration ID In order to determine the proper codes to use for the Configuration Variables CnfglD spreadsheets of the CnfgID values are available online at http customer honeywell com t7 350 A PDA or Honeywell s TStatSpec software can be used as well Follow these instructions for identifying the CnfgID values using Stats ec 1 Open the TStatSpec software on your PC 2 Create a new configuration or open an existing con figuration 3 Select the Configuration Screen button and con figure the settings as desired 4 Click on the Configuration ID button on the b
4. occur if the compressor is cycled too quickly Use Test Mode to check the thermostat configurations and operation To start the system test 1 Press Schedule Day Occupied and Not Occupied simultaneously 2 The display gives the option to TEST a To enter test mode press up 4 or down v until the display indicates IN TEST b To cancel this option ensure display indicates NO TEST 3 Press Run Schedule NOTES To verify whether or not the system test is still active repeat the above process The system test times out after ten minutes with no key pressed Save User Schedule Info Copy Performing this operation saves the current schedule including holidays to memory overwriting the old saved schedule 1 Press both nfo and Copy 2 The display gives the option to revert to SAV SHD a To save the current schedule press up 4 or down w until the display indicates YES b To cancel this option ensure display indicates NO 3 Press Run Schedule Get User Schedule Info Run Getting the user schedule restores the schedule including holidays from saved memory overwriting the schedule currently in use 1 Press both Run Schedule and Info 2 The display gives the option to GET SHD a Toretrieve the saved schedule press up 4 or down w until the display indicates YES b To cancel this option ensure display indicates NO 3 Press Run Schedule TROUBLESHOOTING GUIDE TABLE 4 Table 4 Troubleshooting Informa
5. self test 7 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT WIRING DIAGRAMS FIG 7 14 SUBBASE HEATING COOLING TRANSFORMER TRANSFORMER A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER M19764A Fig 7 Typical hookup of T7350A in two stage heat and one stage cool conventional system with two transformers TR23 REMOTE SENSOR DISCHARGE T5 T6 T7 T4 T3 OS OS A L1 HOT HEATING COOLING TRANSFORMER TRANSFORMER A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER A USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS M32140 Fig 8 Typical hookup of T7350B in two stage heat and two stage cool heat pump system with two transformers 62 0195 08 8 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT TR23 REMOTE SENSOR HEATING COOLING TRANSFORMER TRANSFORMER A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER M32141 Fig 9 Typical hookup of T7350B in three stage heat and two stage cool conventional system with two transformers T
6. ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS A 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 M32144 Fig 13 Typical hookup of T7350H1017 for system with two independent heat stages one modulating two independent cool stages one modulating and two transformers TR23 H REMOTE SENSOR COMPRESSOR E E CONTACTOR 2 a LELELP HUMIDITY q Lonworks BUS SENSOR MOTION SENSOR LonwWorks BUS AA L1 HOT COMPRESSOR CONTACTOR 1 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 PPP gt gt 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 M32145 Fig 14 Typical hookup of T7350H1009 in three stage heat and three stage cool conventional system with one transformer 11 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT DEHUMIDIFICATION T7350D H M There are five methods through which the T7350 can control for dehumidification Three of them modify the c
7. Honeywell T7350 Commercial Programmable Thermostat FOR SINGLE OR MULTI STAGE CONVENTIONAL HEAT PUMP SYSTEMS APPLICATION The T7350 Commercial Programmable Thermostat controls 24 Vac commercial single zone heating ventilating and air conditioning HVAC equipment The T7350 consists of a thermostat and subbase The thermostat includes the display and keypad for 7 day programming The subbase includes equipment control connections The subbase mounts on the wall and the thermostat mounts to the subbase MERCURY NOTICE If this control is replacing a control that contains mercury in a sealed tube do not place your old control in the trash Dispose of properly Contact your local waste management authority for instructions regarding recycling and the proper disposal of an old control If you have questions call Honeywell Customer Care Center at 1 800 468 1502 INSTALLATION When Installing this Product 1 Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check ratings given in instructions and on the product to ensure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After installation is complete check out product operation as provided in these instructions N CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconne
8. Occupied No Motion Standby SETTINGS Sensed Standby NoSensor Standby Using Thermostat Keys Wired The thermostat keys are used to Standby Motion Standby setcurrent time and day Sensed program times and setpoints for heating and cooling Standby No Motion Standby override the program temperatures Sensed display present setting Not No Sensor Not set system and fan operation Occupied Wired Occupied perform simple configuration Not Motion Not Occupied Sensed Occupied Not No Motion Not Occupied Sensed Occupied NOTE See Fig 5 for keypad information Setting Temperature Refer to Table 2 for the default temperature setpoints See In heat mode when set for conventional heat the equip the Product Data form 63 2605 for complete instructions ment i e plenum switch could power the fan despite on changing the setpoints the T7350 Temperature i Set Day Time Override E occupied Tigh Not Occupied Pih i Temporary Temporary HEAT ceo Ee mes Day Time Occupied Not Occupied Co C Co CxJ B WW m Schedule System Fan Run Clear Day Occupied NotOccupied StartTime Copy HEAT COOL ON AUTO Schedule Co 4 Oh X mj ox 8 o M19610 Fig 5 Thermostat key locations 3 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT INSTALLER SETUP For most applications the thermostat factory settings do not need to be changed Rev
9. R23 REMOTE SENSOR AUX HEAT STAGE 1 COMPRESSOR CONTACTOR 2 A L1 HOT HEATING COOLING TRANSFORMER TRANSFORMER A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER A USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS M32142 Fig 10 Typical hookup of T7350B in three stage heat and two stage cool heat pump system with two transformers 9 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT TR23 H REMOTE SENSOR a e 1 SUBBASE HUMIDITY SENSOR COMPRESSOR CONTACTOR 4 COMPRESSOR CONTACTOR 2 COMPRESSOR CONTACTOR 1 A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD A HEAT COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY INSTALLED JUMPER A USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS A 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 M29254 Fig 11 Typical hookup of T7350D in two stage heat and four stage cool conventional system TR23 H REMOTE SENSOR g a z8 On 1 2 DISCHARGE
10. S Options 1 and 2 do not allow adjustments on dehumidification high limit No options lockout special keypress func tions See the Special Functions section for details Setup by pressing Run Schedule T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 5 Display prompts SAV CFG If you want to save it use the up 4 or down key to change NO to YES before pressing Run Schedule again Table 3 T7350 Key Function Summary Ol Tit Grouping Button Definition Information Down Arrow w Lowers setpoint day or time When setting times or temperatures hold key down to continuously decrease value Also can make temporary change in temperature setpoint Information i Obtains information where humidity high limit can be set cycles through setup options Up Arrow a Raises setpoint day or time When setting times or temperatures hold key down to continuously increase value Also can make temporary change in temperature setpoint Temperature Occupied Sets Occupied Heat setpoint Heat itt 4 Occupied gt Sets Occupied Cool setpoint Cool al Not Occupied Sets Not Occupied Heat setpoint Heat CH Not Occupied A Sets Not Occupied Cool setpoint Cool an Set Day IN 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 increases time in one ho
11. ct power supply before installation INSTALLATION INSTRUCTIONS Location Do not install the thermostat where it can be affected by drafts or dead spots behind doors and in corners hot or cold air from ducts radiant heat from sun or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall behind the thermostat IMPORTANT To avoid electrical interference which can cause erratic performances keep wiring runs as short as possible and do not run thermostat wires adjacent to the line voltage electrical distribution systems Use shielded cable The cable shield must be grounded only at the controlled equipment case Subbase WHEN USED TO SENSE ROOM TEMPERATURE Install the thermostat about 5 ft 1 5m above the floor in an area with good air circulation at average temperature See Fig 1 WHEN NOT USED TO SENSE ROOM TEMPERATURE When using the remote mounted temperature and humidity sensor s to sense ambient conditions install the thermostat in an area that is accessible for setting and adjusting the temperature and settings N 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 cir
12. cted to the system transformer Check for 24 Vac between X and RH terminals If missing 24 Vac Check if circuit breaker is tripped if so reset circuit breaker Check if system fuse is blown if so replace fuse Check if the HVAC equipment power switch is in the Off position if so set to the On position Check wiring between thermostat and HVAC equipment Replace broken wires and tighten loose connections If 24 Vac is present proceed with troubleshooting Thermostat minimum off time is activated Wait up to five minutes for the system to respond Use PDA to configure cooling response System selection is set to Off or Heat Set system selection to Cool or Auto System indicator flame heat snowflake cool is displayed but no warm or cool airis coming from the registers The call for heat or cool is not yet given Check if any stage indicators dots next to the system indicator are displayed With no display of stage indicators no call for cool heat is yet given For T7350M models only Check the information screens A MODHEAT or MODCOOL percentage of zero indicates a signal of 4 mA from the given terminal Conventional heating equipment turns the fan on only after the furnace has warmed to a setpoint Wait one minute after seeing the on indicator and then check the registers Heating or cooling equipment is not operating Verify operation of heating or cooling equipment in
13. culation at average temperature See Fig 1 If multiple remote sensors are required they must be arranged in a temperature averaging network consisting of four sensors See Fig 2 LIE LT 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT NOTE Only TR21 models with no setpoint adjustment can be used for temperature averaging Fig 1 Typical location of thermostat or remote mounted sensor M29184 Fig 2 Four TR21 sensors providing temperature averaging network for T7350 Thermostat Mounting Subbase The subbase mounts horizontally IMPORTANT When using the internal temperature or humidity sensor the device must be mounted horizontally with the LCD facing upwards Precise leveling is not needed When using remote room temperature and humidity sensors thermostat mounting orientation does not matter Wall mounting using standard drywall screws is standard Mounting to a 2 in by 4 in 50 8 mm by 101 6 mm wiring box can be accomplished for a horizontal box no extra hardware is required for a vertical box part 2096514 is required Mount to European standard wall box having 2 4 in 60 3 mm between mounting screws in a horizontal line with or without adaptive hardware 1 Position and level the subbase NOTE Alevel wallplate is only for appearance The thermostat functions properly even when not level 62 0195 08 2 Use a pencil to mark the mounting holes
14. e with nonflammable insulation to prevent drafts from affecting the thermostat 2 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Setting System and Fan A ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE a NN 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 B PRESS LOWI controls fan operation in cool mode SSS 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 Intelligent Fan ON control logic Occupancy Call for Heat Cool Motion Scheduled Sensor Effective Period Signal Occupancy Occupied No Sensor Occupied Wired Occupied Motion Occupied Fig 4 Mounting thermostat on subbase Sensed M19609
15. iew the factory settings in Table 2 NOTE When power is first applied to the thermostat the display will show all segments see Fig 6 Table 2 Default setpoints Control Occupied 70 F 21 C 75 F 24 C Not Occupied 55 F 13 C 85 F 29 C Standby 67 F 19 C 78 F 26 C Heating Cooling Temporary Standby 1 Room Not Occupied12 StartTime LI m7 r1 1 SUELE EET E MN DRE MonTueWedThuFri SisunHol MinsDays System eee Fan EmHeat i 3 Off Cool Auto Dehumid S OnAuto M19611 Fig 6 LCD display of all segments N CAUTION Possible Equipment Damage Fan must be running when system is operating Heat pump and electric heat systems must be configured correctly to prevent equipment damage caused by the system running without the fan Setup Using Keypad The installer uses the Installer Setup to customize the thermostat to specific systems For basic setup functions the thermostat can be configured using the keypad NOTE The T7350 has serial communications to facilitate use of an installer configuration tool More advanced features are available using this tool Refer to form 63 2605 for details A combination of key presses are required to use the Installer Setup feature 1 To enter the Installer Setup press and hold both the Run Schedule and the Copy keys until DEG F or DEG C displays 2 To advance to the next Installer Setup
16. ing from temporary setpoint changes info screen temp occ and temp not occ one minute when returning from setting clock day ten minutes when returning from System Checkout five minutes when returning from all other modes 5 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Special Functions Restore Factory Configuration Run Clear IMPORTANT This operation erases current configuration and restores factory defaults for all configuration parameters setpoints and schedules To regain the old configuration requires device reconfiguration Press both Run Schedule and Clear Start Time 2 The display gives the option to revert to FAC CFG a To restore the factory defaults press up 4 or down until the display indicates YES b To cancel this option ensure the display indicates NO 3 Press Run Schedule Get Factory Schedule Info Clear Performing this operation reverts the schedules to the factory defaults 1 Press both nfo and Clear Start Time 2 The display gives the option to revert to FAC SCH a To restore the factory schedule press up 4 or down until the display indicates YES b To cancel this option ensure display indicates NO 3 Press Run Schedule Test Mode Occupied Not Occupied Schedule Day N CAUTION Possible Equipment Damage Equipment damage can result if compressor is cycled too quickly The minimum off time for compressors is bypassed during Test Mode Equipment damage can
17. one cool stage is on Reheat mode cannot occur during heating The T7350M does not support the Reheat method Automation and Control Solutions Honeywell International Inc 1985 Douglas Drive North Golden Valley MN 55422 Honeywell Limited Honeywell Limit e 35 Dynamic Drive Toronto Ontario M1V 4Z9 Reset Temp SetPt The room temperature setpoint resets to a specified number of degrees below the actual setpoint when room relative humidity RH rises above humidity high limit setpoint Though this may not technically reduce relative humidity in the room it reduces the dew point to provide the customer with a sense of comfort due to a lower temperature setting in the room As long as RH stays above humidity high limit setpoint this setpoint is maintained NOTE Hysteresis and a minimum timer prevent the setpoint from short interval alternation between standard and reset setpoints Options Utilizing Auxiliary Output There are two dehumidification options that utilize the auxiliary output They are Simple Dehumidification Hot Gas Bypass Dehumidification Simple Dehumid ification The auxiliary output Energizes when RH rises above humidity high limit De energizes when RH drops below humidity high limit NOTES Hysteresis and a minimum timer prevent short cycling of this output Unlike Dehumid Hot Gas BP the relay remains energized during calls for multiple cooling stages Deh
18. ontrol algorithm thus providing limited dehumidification through cooling The other two use the auxiliary output to control another device IMPORTANT Configurable only with a PDA NOTE The dehumidification high limit can be set within the range of 10 to 90 percent relative humidity Control Through Cooling Configure using some combination of the following Minimum On Reheat Reset NOTES These methods operate only during cooling Selecting both Reheat and Reset options can cause frequent setpoint adjustments This selection is not recommended Min ON Time Dehumidifies by increasing the compressor minimum on time normally 3 minutes by a programmable amount This is useful with oversized systems in that it forces the coils to cool to a point where dehumidification can occur NOTES Can force wider temperature swings by cooling when setpoint control does not require it The minimum on time can be set within the range of 5 to 15 minutes Hysteresis and a minimum timer are used to ensure this behavior does not change with every equipment cycle Reheat Dehumidifies by operating cooling during typical off time The T7350 maintains the proper setpoint by running the heat at the same time IMPORTANT At times during Reheat dehumidification the T7350 operates heating and the cooling simultaneously This is normal NOTES The heat stage never energizes during Reheat if more than
19. ottom left of the configuration screen 5 Make note of the values 6 Press both Copy and Run Schedule on the thermo stat 7 Tap e9 until C1 appears on the right end of the dis play NOTE While stepping toward C1 check other items to ensure they are set properly See Setup Using Keypad section 8 To adjust each variable to match PDA indication a Hold down the up a or down w key to adjust the value quickly b Tap the up 4 or down key for fine control 9 Tap e to switch to another variable Return to step 8 and repeat the process until all configuration values are set properly 11 To exit the Installer Setup press Run Schedule 12 Display prompts SAV CFG save configuration a If you want to save the new configuration use the up 4 ordown 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 and press Run Schedule Setting Keypad Lockout Proper keypad sequences activate the lockout features To change the keypad lockout state 1 Enter the Installer Setup press and hold both the Run Schedule and the Copy keys until DEG F or DEG C displays 2 Press until KYLCK displays 3 Usethe up 4 or down key to change the set ting Options are 0 No lockout 1 Lockout all keys except Temporary Occupied Temporary Not Occupied up 4 or down and 2 Lockout all keys except e NOTE
20. rature setpoints Heating 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 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 to unlock keypad Press both Run Schedule and Copy then change keypad lock level Room temperature is out of control Remote temperature sensing is not working Check all remote sensors Heat will not come on No power to the thermostat Check that X terminal is connected to the system transformer Check for 24 Vac between X and RH terminals If missing 24 Vac e Check if circuit breaker is tripped if so reset circuit breaker e Check if system fuse is blown if so replace fuse Checkif the HVAC equipment power switch is in the Off position if so set to the On position Check wiring between thermostat and HVAC equipment Replace broken wires and tighten loose connections If 24 Vac is present proceed with troubleshooting Thermostat minimum off time is activated Wait up to five minutes for the system to respond Use PDA to configure heating response System selection is set to Off or Cool Set system selection to Heat or Auto Cooling will not come on No power to the thermostat Check that X terminal is conne
21. tion Symptom Possible Cause Display will not come on Thermostat is not being powered Action Check that X terminal is connected to the system transformer Check for 24 Vac between X and RH terminals If missing 24 Vac e Check if circuit breaker is tripped if so reset circuit breaker e Check if system fuse is blown if so replace fuse e Check if the HVAC equipment power switch is in the Off position if so set to the On position Check wiring between thermostat and HVAC equipment Replace broken wires and tighten loose connections If 24 Vac is present proceed with troubleshooting Temperature display is Room temperature display has been recalibrated Use PDA configuration software to recalibrate as desired incorrect Thermostat is configured for F or C display Press both Run Schedule and Copy then reconfigure the display Bad thermostat location Relocate the thermostat sign all systems shut down Display shows three dashes and a degree T7350 is set for remote sensing and sensor is missing or circuit is either open or shorted 62 0195 08 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 4 Troubleshooting Information Continued Symptom Temperature settings will not change Example Cannot set heating higher or cooling lower Possible Cause Upper or lower temperature limits were reached Action Check the tempe
22. umid Hot Gas BP The auxiliary output operates as shown in Table 5 Table 5 Hot Gas Bypass Dehumidification Logic Humidity Cooling Stages Active Auxiliary Output High more than one De energized High one or less Energized Low more than one De energized Low one or less De energized Auxiliary output during call for multiple cooling stages for two reasons 1 This method assumes that the cooling provides dehumidification 2 Multiple cooling stages probably provide necessary dehumidification NOTE Hysteresis and a minimum timer prevent short cycling of this output Honeywell U S Registered Trademark 2010 Honeywell International Inc 62 0195 08 M S Rev 09 10 customer honeywell com Printed in U S A
23. ur increments Override Temporary Temporary occupied setting for length of time defined by installer User can Occupied modify setpoints F Temporary Not T Sets holiday length User selects number of days 0 99 or for Occupied continuous override Schedule Day a Selects day schedule to modify Used also with copy key Occupied Selects occupied event start times for specified day Repeatedly press this key to toggle between two occupied events Not Occupied t Ll Selects not occupied event start times for specified day Repeatedly press this key to toggle between two not occupied events Clear Start Time R Clears start time for specified period and day Copy Copies schedule from one day to another System X Selects System Mode Toggles through Em Heat Heat Off Cool and Auto Fan x Selects fan operation mode Toggles between On and Auto Run Schedule Q Resumes running schedule cancels Temporary Occupied action Holiday and or Temporary setpoint changes On Continuous fan operation during occupied periods During not occupied periods and standby fan cycles with call for heat or cool Auto Fan cycles with call for heat or cool during all periods See Product Data Sheet form 63 2605 for more details NOTES The display returns to default screen after pressing Run Schedule or after a period of time without keypress ten seconds when return
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