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Honeywell Thermostat T7350 User's Manual

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1. T17770A3002 THE T7771A3002 IS A 10K OHM SENSOR M22408 Fig 5 Two T7770A3002 Sensors providing a temperature averaging network for T7350 Thermostat T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT SUBBASE M19607A Fig 6 Nine T7770A Sensors providing a temperature averaging network for T7350 Thermostat B m SCREWS M19608 Fig 7 Mounting the subbase 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Wiring N CAUTION Electrical Shock or Equipment Damage Hazard Can shock individuals or short equipment circuitry Disconnect power supply before installation IMPORTANT All wiring must comply with local electrical codes and ordinances NOTE Maximum and recommended wire size is 18 gauge 1 02 mm Do not use wire smaller than 22 gauge 0 644 mm Follow equipment manufacturer wiring instructions when available Refer to the Wiring Diagram section for typical hookups A letter code is located near each terminal for identification Refer to Tables 3 through 8 for terminal designations 1 Loosen subbase terminal screws and connect system wires Securely tighten each terminal screw Push excess wire back into the hole in the wall Plug the hole with nonflammable insulation to prevent drafts from affecting the thermostat BON Table 3 T7350A Subbase for Single stage Heat Single stage Cool Systems Table 4 T7350B Subbase for Two stage Heat Two stage Cool Systems Termi
2. 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 heat stage never energizes during Reheat if more than one cool stage is on mode cannot occur during heating T7350H1017 T7350M do not support the Reheat method 63 2605 5 22 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 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 this set point is maintained NOTE Hysteresis and a minimum timer prevent the set point from short interval alternation between stan dard and reset set points Options Utilizing Auxiliary Output There are two dehumidification options that utilize the auxiliary output They are Simple Dehumidification Hot Gas Bypass Dehumidification SIMPLE DEHUMID IFICATI
3. NOTE Some selections only appear for the models that support them Ter Room Rel Local Humidity Mone Net Occ Sensor EIE Discharge Air Temp Outdoor RirTemp 9 Fig 30 Inputs screen Make changes and tap Next Novice navigation to the Dehumidification screen is controlled based on the T7350 model and configured room humidity sensor status So step 9 and Fig 31 may not apply NOTE The Dehumidification screen facilitates changes to a Room humidity high limit b Dehumidification options Dehumidification High Limit 65 4 5 Y Dehurnid Options L Min ON Time O Reheat O Reset Temp SetPt Fig 31 Dehumidification screen Make changes and tap Next to proceed to the Cooling Config uration screen The Cooling Config screen facilitates changes to a Number of Stages b Cooling Response c OAT Lockout and DAT Low Limit Setpoints for some models 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Cooling Config Config Stages Cooling Response Fast 4 cph Cooling Config Config Stages Cooling lE cph Response Fast 4cph Action RTRs Reverse E Enable OAT Lockout P ORT SetPt 35 F E Enable DAT Low Limit P DRT SetPt 45 F T7350D T7350M Fig 32 Cooling Config uration screen 12 Make changes and tap Next to proceed to the Heating Config uration screen 13 The Heating Config uration screen faci
4. So o o E 35 9 9 x ab Description 4 o Description Rca 24 VAC Cooling transformer Rca 24 VAC Cooling transformer RH 24 Heating transformer 24 VAC Heating transf i RH eating transformer X E CONGR Commer aux Auxiliary relay or 2nd stage of heating or cooling aux aux Auxiliary relay connection normally open W1 Stage 1 heating relay aux aux Auxiliary relay connection common Y1 Stage 1 cooling relay W1 1 heating relay MX Modulating common Y1 Stage 1 cooling relay MH Modulating heating signal 4 20 mA MX Modulating common MC Modulating cooling signal 4 20 mA MH Modulating heating signal 4 20 mA AS Discharge Air Sensor connection 1 MC Modulating cooling signal 4 20 mA AS Discharge Air Sensor connection 2 AS Discharge Air Sensor connection 1 OS Outdoor Air Sensor connection 1 AS _ Discharge Air Sensor connection 2 OS Outdoor Air Sensor connection 2 OS Outdoor Air Sensor connection 1 G Fan relay OS Outdoor Air Sensor connection 2 T3 T7770 Remote Sensor connection 3 G Fan relay T4 T7770 Remote Sensor connection 4 T3 T7770 Remote Sensor connection 3 T5 T7770 Remote Sensor connection 5 T4 T7770 Remote Sensor connection 4
5. a ECONOMIZER 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 M19769A Fig 24 Typical hookup of T7350M for system with two independent heat stages one modulating two independent cool stages one modulating and one transformer 28 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT MODULATING R COOL 4 20mA X OUTDOOR T7770 REMOTE SENSOR MODULATING R HEAT 134 y 4 20 X DISCHARGE AIR SENSOR HOT HEATING COOLING TRANSFORMER TRANSFORMER POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED VAN WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS REMOVE THE FACTORY INSTALLED JUMPER USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS M22006 Fig 25 Typical hookup of T7350M for system with two independent heat stages one modulating two independent cool stages one modulating and two transformers 29 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT APPENDIX PDA USAGE See Table 20 for the advanced setup options available through a PDA NOTE Upon initial thermostat power up wait at least 30 seconds before connecting the TIM Hardware Requirements The Thermostat Configuration Tool has the followin
6. G Fanrelay T3 T3 T7770 Remote Sensor connection 3 a T4 T4 T7770 Remote Sensor connection 4 pi T5 T5 T7770 Remote Sensor connection 5 6 Description T6 T6 T7770 Remote Sensor connection 6 RC RC 24 VAC Cooling transformer T7 T7 T7770 Remote Sensor connection 7 RH RH 24 VAC Heating transformer Factory jumper between RC and RH for systems with one X X Common transformer G G Fan relay b For changeover functional details see Operation section Table 5 T7350D Subbase for Three stage Heat Three stage Cool Systems T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 6 T7350H Subbase for Three stage Heat Three stage Cool Systems with Network Communications Terminal Terminal T a S S ela ela Sls S 3 c Description Description RC RC2 24 VAC Cooling transformer RC RC 24 VAC Cooling transformer RH 24 VAC Heating transformer RH RH 24 VAC Heating transformer X Common X X Common aux aux Auxiliary relay aux aux Auxiliary relay connection normally open Heat Pump Changeover relay for heating B or cooling 0 W1 O B Conventional Stage 1 heating relay Heat Pump Changeover relay for heating B or W2 W1 Conventional Stage 2 heating relay
7. 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 M19767A Fig 19 Typical hookup of T7350B in three stage heat and two stage cool heat pump system with two transformers OUTDOOR AIR COMPRESSOR T7770 REMOTE SENSOR SENSOR CONTACTOR 2 DISCHARGE heat AIR RELAY 3 SENSOR COMPRESSOR CONTACTOR 3 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 M19766A Fig 20 Typical hookup of T7350D in three stage heat and three stage cool conventional system with one transformer 63 2605 5 26 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT OUTDOOR AIR T7770 REMOTE SENSOR SENSOR DISCHARGE AIR SENSOR Gee ECONOMIZER 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 M19768A Fig 21 Typical hookup of T7350D in two stage heat and four stage cool conventional system LONWORKS LONWORKS OUTDOOR AIR
8. Month NOTE To remove a given holiday change the Start Month to None and tap 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 each screen e Repeat steps 2 through 4 until changes are complete for the given holiday set Type in a name for the new holiday set Tap SaveAs Repeat steps 2 through 8 for all desired holiday sets To return to the main menu tap the Holiday screen OK 0o Calibration Connect to a thermostat and calibrate the temperature display Online Diagnostics Connect to a thermostat and using the Monitor Data function read diagnostic information including Thermostat firmware version T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Thermostat hardware version Subbase hardware version Runtime error messages Table 20 Thermostat Setup Options Through PDA a b c d PDA Configuration Option Factory Default Tool CnfgID Description Fan Operation Conventional X X Conventional Applications where equipment controls fan operation in heat mode Electric
9. Not Occupied A W and n 2 Lockout all keys except b Conventional heat pump selection CONV CONV Conventional equipment HT PUMP Heat Pump Heat Pump Reversing Valve RVON HT RVON HT Heat pump energize O B on call for heat RVON CL Heat pump energize O B on call for cool Configuration Variables d Hexadecimal configuration code values C1 C2 C3 C4 C5 C6 C7 C8 The code defines only Installer Configuration It sets neither Parameters gains and setpoints nor Schedules With the exception of Temporary Not Occupied functions not keypad configurable require a Palm OS Configuration Tool Lockouts do not allow adjustments on dehumidification high limit Special keypresses are never locked out Displays only when heat pump is selected Values vary depending on the model 0 3 Toreturn to a Setup item cycle through the options 4 To change a setting use the up or down V key ha Ne ee oie Room 5 To exit the Installer Setup press Run Schedule Hi H Li 6 zm display prompts SAV CFG save configuration CHA AN ANN AN Lt J i If you want to save the new configuration use the System A MontueWeaTmuFnisatSun MinsDays up A or down V 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 pre
10. To exit the Installer Setup press Run Schedule 12 The display prompts SAV CFG save configuration a If you want to save the new configuration use the up A or down V 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 OO BON IMPORTANT 1 Review the settings to confirm that they are correct for the system 2 Press Run Schedule to exit the Installer Setup 3 The thermostat prompts you to save configuration changes Default is NO 4 Be sure to set the current day and time immediately Special Functions Restore Factory Configuration Run Clear IMPORTANT This operation erases the current configuration and restores the factory defaults for all configuration parameters setpoints and schedules To regain the old requires device reconfiguration 1 Press both Run Schedule and Clear Start Time 2 The display gives the option to restore the FAC CFG T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT a Torestore the factory defaults press up A or down V until the display indicates YES b To cancel this option ensure 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 restore the FAC SCH a Torestore the
11. cooling Advantages Comfort setting is achieved at the programmed time and maintained regardless of weather conditions occupants are comfortable Drafts from low temperature discharge air are minimized during Occupied periods Use of the more economical first stage of heat is maximized during recovery minimizing use of the expensive later heat stage s Comfort and energy savings can be achieved in both heating and cooling Heat cycling reduced extending equipment life Auxiliary Relay The auxiliary relay can be used with a variety of controls Time of day TOD Economizer minimum position control Dehumidification see Dehumidification section Relay for Time Of Day Table 16 Time of day TOD is the Auxiliary Relay default configuration TOD logic operates strictly according to programming Occupied Relay contacts closed Not Occupied Relay contacts open Standby Scheduled Relay contacts closed Relay for Economizers Mechanical cooling is often used with outside temperatures in the 50 F 10 C to 60 F 16 C range and humidity below 50 percent In central and northern climates hundreds of hours 63 2605 5 20 fall into this temperature category By permitting 80 to 100 percent outside air into the system mechanical cooling may not be needed at all particularly during Spring and Fall Economizers take advantage of outside air The typical economizer consists of an outs
12. display present setting set system and fan operation perform simple configuration Temperature i Not Occupied E Occupied el HEAT COOL HEAT Lo Co o i COOL T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT NOTE See Fig 9 for keypad information Setting Temperature Refer to Table 2 for the default temperature setpoints See Programming section for complete instructions on changing the setpoints 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 Cool Thermostat controls only cooling Off Heating cooling and fan are all off Heat Thermostat controls only heating Em Heat Auxiliary heat serves as first stage Compressor stages are locked off Fan Settings On See Table 9 Auto Fan always 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 90 seconds Cooling choices are 0 or 40 seconds Table 9 Fan On Control L
13. displayed NOTE If done while in Standby or Not Occupied mode Temporary Occupied override engages 2 The temporary temperature appears for approximately ten seconds then the room temperature is displayed Using Temporary Occupied Override The Temporary Occupied Override can be used when the T7350 is in Not Occupied or Standby mode It switches to the Occupied mode for a fixed number of hours 1 To use the default occupied override press Temporary Occupied NOTE The default temperature setting is the Occupied setpoint To select a temperature setting other than the default press up A or down V until the desired temperature off set is displayed range is 0 F to 3 F 0 TO 2 NOTE This offset can be restricted by the limits detailed in the Setpoint Limits section Using Temporary Not Occupied Override The Temporary 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 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT NOTES the number of days is set to zero no temporary change takes effect Ifthe 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 Occupied 2 Press A or down to change the duration of the Not Occupied period in days NOTE The default temp
14. factory schedule press up A or down V 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 occur if the compressor is cycled too quickly Use the 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 A or down V until the display indicates IN TEST b To cancel this option ensure the display indicates NO TEST 3 Press Run Schedule NOTES verify whether or not the system test is still active repeat the above process 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 SAV SHD a To save the current schedule press up A or down V 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
15. 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 A or down V until the display indicates YES b To cancel this option ensure display indicates NO 3 Press Run Schedule 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 11 T7350 Key Function Summary Grouping Button Definition Information Down Arrow Lowers setpoint day or time When setting times or temperatures hold key down to W continuously decrease value Also can make temporary change in temperature setpoint Information 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 IP 4 Occupied Sets Occupied Cool setpoint Eo Not Sets Not Occupied Heat setpoint Occupied Cn 0 Heat Not Sets Not Occupied Cool setpoint Occupied fu 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 increases time in one hour increments Override Temporary Temporary occup
16. neg Ing Heat Pump 2nd Stage auxiliary heat relay HS HS Humidity Sensor connection signal 0 10 Vdc Conventional Stage 3 cooling relay HC He Sensor HS HS Humidity Sensor connection signal 0 10 Vdc Sensor power HC Humidity Sensor connection common SM EM Sensor CONN 1 HP HP Humidity Sensor connection power __ Motion Sensor connection 2 M M Motion Sensor connection 1 Factory jumper between RC and RH for systems with one M M Motion Sensor connection 2 b transtormer 7 p ebus ebus LonWorks Bus 1 For changeover functional details see Operation section b bus LonWorks Bus 2 ebus ebus LonWorks Bus 2 Factory jumper between RC and RH for systems with one transformer Floating auxiliary contact not connected to transformer hot or common For changeover functional details see Operation section 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 7 T7350H Subbase for Modulating Systems with Network Communications Table 8 T7350M Subbase for Modulating Systems Factory jumper between RC and RH for systems with one transformer Floating auxiliary contact not connected to transformer hot or common 63 2605 5 Terminal Terminal
17. 2 Universal Versaguard Thermostat guards SUBBASE M22432 42 4 s44 83 42 I 69 16 166 Fig 1 Thermostat and subbase dimensions in inches mm 63 2605 5 4 Hardware Output Mandatory Network Variables nviRequest SNVT_obj_request nviTimeSet SNVT time stamp nviFileReq SNVT file req nviFilePos SNVT file pos Configuration Properties nc1 nciDeviceName UCPTdevName manf specific nc2 nciApplVer UCPTapplVer manf specific nvoStatus SNVT obj status nvoFileStat SNVT file status Optional Network Variables nvilnUse UNVT inUse nviPgm UNVT pgmin nroT7350Ver UNVT version nroPgmVer pgmid UNVT pgmOut Defined Section nvoTime SNVT time stamp nvoAlarmH alarm nvoAlarmStatus UNVT alarmStatu nvoAlarmLog UNVT alarmLog nvoError UNVT error Hardware Input T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Hardware Output SCC Rooftop Object Number 8504 nviSpaceTemp nvoSpaceTemp SNVT temp p Mandatory SNVT temp p Network Variables nvoUnitStatus SNVT_hvac_status nvoEffectSetpt SNVT_temp_p nvoEffectOccup SNVT_occupancy nviSetpoint SNVT temp p nviOccSchedule SNVT tod event Optional nviOccManCmd nvoHeatCool gt SNVT occupancy Network SNVT hvac mode Variables nviO
18. 222 OR SIMILAR AND OVERLOAD PROTECTION AS REQUIRED AUXILIARY POWER SUPPLY PROVIDE DISCONNECT MEANS TRANSFORMER M22488 Fig 16 Using T7350H models with an external relay powered from an auxiliary transformer Default Auxiliary Relay Operations T7350D T7350H1009 only Unless configured as a stage of heating or cooling terminals W2 W3 and Y3 operate for specific auxiliary functions Each output takes on different auxiliary functions depending on configuration for Conventional 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 17 Default Auxiliary Relay Operations Heat Pump or Conventional Contact Not Used as Heat or Cool Stage Contact Configuration of Contact Not Used as Stage Auxiliary Contact Configuration Time of Day Economizer Heat Pump Y3 not Simple Simple Time of Day Time of Day Dehumidification Dehumidification W2 not aux heat Economizer Time of Day Economizer Economizer Conventional W3 not Simple Simple Simple Time of Day Dehumidification Dehumidification Dehumidification Y3 not W3 not Economizer Time of Day Time of Day Economizer Y3 not W3 used Simple Simple Simple Time of Day Dehumidification Dehumidification Dehumidification A A A Hot Gas Bypass Simple Dehumidification Dehumidification Simple dehumi
19. ATION me Installing this Product 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 Disconnect power supply before installation IMPORTANT All wiring must agree with applicable codes ordinances and regulations Cf 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 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 Subbase WHEN USED TO SENSE ROOM TEMPERATURE Install the thermostat about 5 ft 1 5m above t
20. COMPRESSOR T7770 REMOTE SENSOR SENSOR ECONOMIZER CONTACTOR 2 DISCHARGE Ed AIR SENSOR Ed 3 m m 2 COMPRESSOR CONTACTOR 3 BUS BUS 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 M22489 Fig 22 Typical hookup of T7350H1009 in three stage heat and three stage cool conventional system with one transformer 27 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63 2605 5 MODULATING COOL 4 20 mA MODULATING R HEAT EM 4 20 mA OUTDOOR AIR T7770 REMOTE SENSOR DISCHARGE LONWORKS BUS LONWORKS BUS HEATING TRANSFORMER COOLING 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 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS M22006 Fig 23 Typical hookup of T7350H1017 for system with two independent heat stages one modulating two independent cool stages one modulating and two transformers MODULATING R COOL 4 20mA X OUTDOOR AIR SENSOR T7770 REMOTE SENSOR DISCHARGE AIR SENSOR HEAT 04 S 4 20 MODULATING
21. D on means either occupied or bypass pushing bypass can cancel bypass RoomRelHumidity a X X Room Relative Humidity Input None No humidity sensor Local Use internal humidity sensor Remote Use remote humidity sensor 0 10 Vdc signal Discharge AirTemp None X X Discharge Air Temperature Input None No discharge air sensor or Remote Remote discharge air sensor Outdoor AirTemp None X X Outdoor Air Temperature Input None No outdoor air sensor or Remote Remote outdoor air sensor OccSensor 0 X X None No occupancy sensor or Remote Remote occupancy sensor AuxDO Time of Day X X Auxiliary Contact Operation Time of Day Economizer Dehumid Hot Gas BP or Simple Dehumid Auxiliary contact not available if heat pump selected with T7350A Key Pad Lockout Enable All X X Keypad lockout enable disable through special keypad sequence Enable All 0 No lockout SetPts amp Ovrrd 1 Lockout all keys except Temporary Not Occupied A W and Info Only 2 Lockout all keys except Q The special keypress 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 Minimum heating outdoor air t
22. E Sun Sat Hol KT WF Time w Unoccupied w Hone Fig 40 Weekly Schedule Mode CopyDayTo Tap Next to proceed to the SetPoints screen The SetPoints screen facilitates changes to the a Default setpoints b Occupied Setpoint stops c Temporary Override duration SetPoint MN Heating Cooling ah ah Occupied T w ER PN PN Standby T age 78 F 55 45 25 f ww Occupied P ah SetPtStop w 95 ag F Tempoverride w 3 Hrs Fig 41 SetPoints screen Make changes and tap Next to return to the Summary Screen Tap Save to save changes under the existing name Tap DownLd to download changes to a connected T7350 CnfgID to have the device calculate configuration number s The configuration numbers represent the C numbers 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 To return to the Home Screen tap the Menu icon lower left hand corner silk screen and tap Set Home 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Config Name ExamplemodelD Description amp nfglD 3B 04 02 10 01 04 0 3 00 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 Tapthe Summary tab in the upper left corner 3 Select File Delete 4 Selec
23. Heat Applications where thermostat controls fan operation in heat mode The thermostat always controls the fan in cool mode Extended Heat Fan Extend 90 sec X X No Extended Op No extended fan operation after call for heat ends Extend 90 sec Fan operation extended 90 seconds after call for heat ends Extended Cool Fan No Extended X X No Extended Op No extended fan operation after call for cool ends Extend 40 sec Fan operation extended 40 seconds after call for cool ends Control Standard X X Standard Conventional equipment Heat Pmp Heat Pump HeatPump RevValve ActvClg X X ActvClg Energize O B on call for cool ActvHtg Energize O B on call for heat Heat Output Stages a X X Stages of heat conventional HVAC equipment Set to zero for heat pump Three heat stages not available if configured for four stages of cooling AuxStg 1 X X Auxiliary Heat Stages for heat pump applications Number of stages 0 1 or 2 Heating Response 6 cph X X 3 cph Standard response for heating system 6 cph Medium response for heating system 9 cph Fast response for heating system 20 cph Super fast response for heating systems Heat Lockout None X X None No outdoor air temperature OAT lockout for heat Enable Heat locked out when OAT is greater than Heat Lockout Setpoint Heat Lockout Setpoint 70 F X Heat is locked out when OAT is greater than this setpoint Range 40 to 120 F Cool Output stages a X X Stages of cool conventional or number of com
24. Honeywell 17350 Commercial Programmable Thermostat FOR SINGLE OR MTG512ULTI STAGE CONVENTIONAL HEAT PUMP SYSTEMS Honeywell 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 keypad and display for 7 day programming The subbase includes equipment control connections The subbase mounts on the wall and the thermostat mounts to the subbase PRODUCT DATA FEATURES Typically used in buildings including restaurants shopping malls office buildings and banks under 55 000 square feet Forsingle zone rooftop units split systems heat pumps or hot chilled water systems 7 day programming Two Occupied and two Not Occupied periods per day Thermostat Interface Module TIM connections to thermostat from PDA for advanced configuration programming keypad lockout etc changes can be made with thermostat mounted Individual heat and cool setpoints available for Occupied and Not Occupied periods e 1 0 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 including outdoor air and di
25. ON 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 the relay remains energized during calls for multiple cooling stages DEHUMID HOT GAS BP The auxiliary output operates as shown in Table 18 Table 18 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 dehu midification 2 Multiple cooling stages probably provide necessary dehumidification NOTE Hysteresis and a minimum timer prevent short cycling of this output TROUBLESHOOTING GUIDE TABLE 19 Table 19 Troubleshooting Information T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Symptom Display will not come on Possible Cause Thermostat is not being powered Action Check that X terminal is connected to the system transformer Check for 24 Vac between X and RH or RC terminals If missing 24 Vac 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 equipme
26. Pole Single Throw SPST Outdoor Sensor Wiring Requires 18 gauge wire Humidity Ratings 596 to 9096 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 to 66 Display Accuracy 1 F 1 Setpoint Range Heating 40 F to 90 F 4 C to 32 C Cooling 45 F to 99 F 7 C to 37 C Deadband 2 F 1 C Default Settings See Table 2 Loss of Power The thermostat maintains programmed times and temperatures for the life of the product Clock and day information is retained for a minimum of 48 hours NOTE To achieve the 48 hour power loss clock retention the T7350 must be powered for at least 5 minutes Communicating Model T7350H Connection Terminals for the LonWorks Bus Network jack for quick access by personal computer based tools Communications service pin pushbutton to simplify startup LonMark Functional Profile 8500_20 Space Comfort Controller LonMark SCC Object Type 8504 Rooftop See Fig 2 LonMark Program Identifier 80 00 0C 55 04 03 04 2E LonMark Application Interoperability version 3 3 Honeywell LonMark Plug In file downloads http plugin ge51 honeywell de index htm 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT PDA System Requirements Accessories Palm OS 3 5 x to 5 2 1 Duc
27. T6 T7770 Remote Sensor connection 6 T5 T7770 Remote Sensor connection 5 T7 T7770 Remote Sensor connection 7 T6 T7770 Remote Sensor connection 6 HS Humidity Sensor connection signal 0 10 Vdc T7 T7770 Remote Sensor connection 7 HC Humidity Sensor connection common HS Humidity Sensor connection signal 0 10 Vdc HP Humidity Sensor connection power HC Humidity Sensor connection common M Motion Sensor connection 1 HP Humidity Sensor connection power M Motion Sensor connection 2 M Motion Sensor connection 1 Factory jumper between RC and RH for systems with one M Motion Sensor connection 2 transformer ebus ebus LonWorks Bus 1 ebus ebus LonWorks Bus 2 Mounting Thermostat on Subbase Fig 8 With the subbase installed mount the thermostat 1 Engage the tabs at the top of the thermostat and subbase 2 Swing the thermostat down 3 Press the lower edge of the case to latch NOTE remove the thermostat from the wall first pull out at the bottom of the thermostat then remove the top A ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE M19609 Fig 8 Mounting thermostat on subbase SETTINGS Using Thermostat Keys The thermostat keys are used to set current time and day program times and setpoints for heating and cooling override the program temperatures
28. X X AMIPM 12 hour clock format 24 hr 24 hour clock format The Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21 12 00 Noon is the default start point when time is unknown Only Available if user selected one or more of following Dehumidification Reset Dehumidification Minimum On or Dehumidification Reheat Config ID cannot handle Standby setpoints Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship The T7350 algo rithm never allows the effective setpoint outside Not Occupied setpoints 35 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 20 Thermostat Setup Options Through PDA Continued PDA Configuration Option Factory Default Tool CnfglD Description Temperature Display No Change X No Change Displayed temperature is actual room temperature Calibration Can adjust to display up to 3 F 1 7 C higher or down to 4 F 2 2 C lower than room temperature TempOverride 3 X X Temporary Occupied Override duration Range 1 to 8 hours RoomTemp Local X X Room Temperature Input Local Use internal sensor T7770A D Use remote sensor T7TT0B C Use remote sensor with setpoint adjustment capability requires PDA T7771 Use remote sensor with setpoint adjustment capability requires PDA changes T7771 LED and bypass button operation LE
29. ay Logic Economizer and TOD Occupancy Call for Auxiliary Contacts Scheduled Sensor Signal Cool Economizer TOD Occupied Closed Closed Occupied Standby Yes Closed Open Occupied Standby No Open Open Standby Standby Closed Closed Not Occupied Yes Closed Open Not Occupied No Open Open Unless otherwise noted Economizer logic ignores calls for heat TOD logic always observes calls for heat With fan set to AUTO and call for neither heat nor cool the relay is open in order to disable damper minimum position Other Uses for the Auxiliary Relay Examples of other uses of the auxiliary relay are hot water heaters lighting or baseboard heat The additional loads are connected to the auxiliary relay contacts on the subbase The contacts are rated for 1 5A at 30 Vac but can be adapted to higher current applications using an external relay See Fig 14 through 16 AUXILIARY RELAY CONTACT 17350A B D M SUBBASE A RELAY REQUIRED R8222 OR SIMILAR M19613 Fig 14 Using T7350A B D M models with an external relay with loads greater than 1 5A T7350H SUBBASE AUXILIARY RELAY CONTACT A RELAY REQUIRED R8222 OR SIMILAR M22487 Fig 15 Using T7350H models with an external relay powered from thermostat transformer T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT T7350H SUBBASE AUXILIARY RELAY CONTACT A RELAY REQUIRED R8
30. base mounts horizontally or vertically IMPORTANT When using the internal temperature sensor the device must be mounted horizontally with the LCD facing upwards Precise leveling is not needed When using remote sensors thermostat mounting orientation does not matter Wall mounting using standard drywall screws is standard Mounting to a 2 in 50 8 mm by 4 in 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 60 3 mm 2 4 in between mounting screws in a horizontal line with or without adaptive hardware 1 Position and level the subbase NOTE A level wallplate is only for appearance The thermostat functions properly when not level 2 Use a pencil to mark the mounting holes See Fig 7 3 Remove the subbase from the wall and drill two 3 16 in 4 76 mm holes in the wall if drywall as marked For firmer material such as plaster or wood drill two 7 32 in 5 56 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 SUBBASE M19606A Fig 4 Four T7770A Sensors providing a temperature averaging network for T7350 Thermostat T7350 SUBBASE 17770A3002
31. ccSensor SNVT occupancy nviApplicMode SNVT hvacMode nviOutdoorTemp nvoSpaceRH SNVT Temp p SNVT lev percent nviSpaceRH nvoOutdoorTemp SNVT lev percent SNVT temp p Configuration Properties nvoDischAirTemp SNVT temp p nvoTerminalLoad SNVT_lev_percent nc1 nciSndHrtBt SNVT time sec mandatory nc4 nciRevHrtBt SNVT time sec optional nc2 nciSetpoints SNVT temp setpt mandatory nc6 nciBypassTime SNVT time min optional nciConfig UCPTconfig manf specific nciConfigPts UCPTconfigPts manf specific nciDayLghtSav UCPTdaylightSav manf specific nciDayScheduleO UCPTscheduleO nciDaySchedule1 UCPTschedule1 nciDaySchedule2 UCPTschedule2 nciDaySchedule3 UCPTschedule3 nciDaySchedule4 UCPTschedule4 nciDaySchedule5 UCPTschedule5 nciDaySchedule6 UCPTschedule6 nciDaySchedule7 UCPTschedule7 nciHolSched UCPTholSched nviBypass SNVT_switch nviFanAuto SNVT_switch nviManValue UNVT manValue nviDIcShed UNVT_dicShed manf specific manf specific manf specific manf specific manf specific manf specific manf specific manf specific manf specific nvoBypass SNVT_switch nvoOccSchedule SNVT_tod_event nvoOccSensor SNVT_occupancy nvoData1 UNVT data1 nvoData2 UNVT data2 M22431 Defined Section Hardware Input Fig 2 T7350H LonMark Space Comfort Controller Rooftop Object 8504 with Node Object 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT INSTALL
32. cooling 0 Heat Pump 1st Stage auxiliary heat relay 9 W2 W1 Conventional Stage 2 heating relay Y1 Y1 Conventional Stage 1 cooling relay Heat Pump 1st 1296 den pon relay Heat Pump Stage 1 compressor relay Y1 Y1 Conventional Stage 1 cooling relay Y2 2 Conventional Stage 2 cooling relay Heat Pump Stage 1 ris Heat Pump Stage 2 compressor relay Mn AS AS Discharge Air Sensor connection 1 Nee S Hee Erne 2 AS Air Sensor connection 2 AS JAS Discharge Air Sensor connection 1 OS OS Outdoor lt Sensor cennection 1 AS AS Discharge Air Sensor connection 2 OS 05 Outdoor Air Sensor connection 2 OS 05 Outdoor Air Sensor connection 1 NS Fanrelay OS 05 Outdoor Air Sensor connection 2 T3 T7770 Remote Sensor connection 3 G G Fan relay T4 T4 T7770 Remote Sensor connection 4 T3 T3 7770 Remote Sensor connection 3 T5 5 7770 Remote Sensor connection 5 T4 T4 7770 Remote Sensor connection 4 Te TS 17770 Remote Sensor connection 6 T5 T5 T7770 Remote Sensor connection 5 Te Remote Sensor connection 7 T6 6 7770 Remote Sensor connection 6 W3 W2 Conventional Stage 3 heat or stage 4 cool relay T7 T7 77770 Remote Sensor connection 7 Heat Pump 2nd Stage auxiliary heat relay Y3 Conventional Stage 3 cooling rela W3 W2 Conventional Stage heat or stage 4 cool relay Venn
33. dification 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 b The PDA configuration tool output screen displays available Auxiliary Relay functions based on this configuration 21 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Dehumidification T7350D M H only There are five methods through which the T7350 can control for dehumidification Three of them modify the control algorithm thus providing limited dehumidification through cooling The other two use the auxiliary output to control another device IMPORTANT Configurable only with a PDA or a network tool such as LonSpec or CARE 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 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 force wider temperature swings by cooling when setpoint control does not require it
34. emperature Range 20 to 100 F Recovery Heat OAT Max 40 F X Maximum heating outdoor air temperature Range 20 to 100 F Recovery Cool OAT Min 90 F X Minimum cooling outdoor air temperature Range 20 to 100 F Recovery Cool OAT Max 70 F X Maximum cooling outdoor air temperature Range 20 to 100 F Demand Limit Control Bump F X Demand limit control set point bump Range 0 to 10 F Power Failure Seq Start 0 x10 sec X X Delays start of equipment fan heat cool after power restored to thermostat Range 0 to 150 seconds in 10 second increments Enable DAT High Limit None X X None No Discharge Air Temperature DAT high limit Enable Use DAT High Limit Enable DAT Low Limit None X X None No Discharge Air Temperature DAT low limit Enable Use DAT Low Limit High Limit DAT Setpoint 110 F X Discharge Air Temperature High Limit Setpoint Range 65 to 140 F Low Limit DAT Setpoint 45 F X Discharge Air Temperature Low Limit Setpoint Range 35 to 60 F Dehumidification Min On None X X None No Minimum On Time dehumidification Enable Dehumidification using Minimum On Time Dehumidification Min On Time 5 X Minimum on time used with Dehumidify Minimum On Range 5 to 15 minutes Dehumidification Reset Temp None X X None No Reset dehumidification Enable Dehumidification using Reset a b C The Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21 12 00 No
35. erature setting is the Not Occupied setpoint 3 Press to display the default setpoint NOTE The only way to change this setpoint is to change the Not Occupied setpoint 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT OPERATION Startup Operation Upon initial thermostat powerup a startup and initialization program begins This startup occurs only on initial powerup After total loss of power for an extended period the current time and day can be lost requiring reset However the thermostat retains the user program NOTE With no program set the thermostat controls to the Occupied default setpoints of 70 F 21 C for heat and 75 F 24 C for cool T7350 Relay Logic All T7350 model thermostats contain 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 the heat pump compressor changeover fan and emergency heat NOTE Models T7350B D T7350H1009 have subbases with more relays to accommodate extra stages Logic with Modulating Outputs T7350H1017 M only The specific relay logic depends on whether or not staging is employed See Table 14 NOTE The modulating outputs always provide a signal Table 14 T7350 Modulating Relay Logic Exceptions Relay Action Modulating Heat Output Stages Cool Fan On 0 On Output reaches 1096 On 1 to 100 Output falls bel
36. etpoint Shed Restore room temperature and humidity Modulating output configuration Additional standby period used in low traffic areas Use T7350H to time schedule up to 119 network connected XL10 XL15c devices Time synchronization with a network master clock or the T7350H configured as the network master clock Sequential start option Discharge air high low limits Selectable recovery ramp Remote manual occupancy changes to the T7350 via Ambient lockout with outdoor sensor Command Display S7760 System monitoring View and modify weekly schedules and holidays via Command Display S7760 Remote changes to the T7350 occupancy override schedules fan operation on auto system mode off auto heat cool and room temperature setpoints via Workstation Application database with download and storing Remote unoccupied bypass controlled from another device Remote T7350 data and alarm monitoring via Command Display or Workstation Network Manual Mode allows a remote user to turn on off or modulate each output via a network connection e LonMark plugin software to facilitate third party configuration tools and workstations ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE wholesaler or distributor refer to the TRADELINE Catalog or price sheets for complete ordering number If you have additional questions need further infor
37. g configuration PDA hardware platform supporting application software Serial Connection Cable with TIM The interface plug connects to the thermostat socket N CAUTION Equipment Damage Hazard Can damage the TIM connection beyond repair Disconnect the TIM cable prior to opening or closing the thermostat cover Setting Clock It is best to set the clock before downloading anything else to the thermostat Connect to the thermostat and set the clock See Fig 26 NOTES When setting the clock the first time the PDA displays an incorrect T7350 Clock time day and date Day of Week mode forces the T7350 to ignore holidays T7350 Clack T7350 Clock x4ddpm THU 07717 2003 11 15pm WED 12 19 1999 Date Mode Date Mode Method Manual Time Date Fig 26 Set Clock menu PDA Programming The PDA Configuration Tool can perform a variety of tasks Configure the thermostat Calibrate the thermostat Perform diagnostics NOTE To install the configuration tool on a second PDA 1 Power up both PDAs 2 Execute the following command sequence from the source PDA Menu Beam T7350 Beam 63 2605 5 30 Configuration Whether the configuration is performed offline or while connected the procedure 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 c
38. he floor in an area with good air circulation at average temperature See Fig 3 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 63 2605 5 6 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 circulation at average temperature See Fig 3 If multiple remote sensors are required they must be arranged in a temperature averaging network consisting of four or nine sensors See Fig 4 and 6 NOTE Only T7770 models with neither setpoint adjustment nor bypass can be used for temperature averaging M4823A Fig 3 Typical location of thermostat or remote mounted sensor 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 Belden type 8762 or equivalent for 2 wire The cable shield must be grounded only at the controlled equipment case Mounting Subbase The sub
39. hrough 6 for all the days desired 8 Press Run Schedule Clearing Program Start Times 1 Press Occupied or Not Occupied until the start period to be cleared is displayed Press Day until desired day is displayed Press Clear Start Time Repeat steps 1 through 3 for all the start times to be cleared 5 Press Run Schedule PON Temperature Setpoints Setpoint Limits The setpoint temperature range is 40 F to 90 F 4 C to 32 C for heating and 45 F to 99 F 7 C to 37 C for cooling NOTES The ranges mentioned can be limited based upon setpoints and stops 1 The greater of the Minimum Heat Stop and the Not Occupied Heat setpoints determines the lowest setting to which the occupied heat setpoint can be adjusted F Stop NotOcc lt OccHeat lt OccCool 2 C Stop NotOcc lt OccHeat lt OccCool 1 2 The lesser of the Maximum Cool Stop and Not Occupied Cool setpoints determines the highest setting to which the occupied cool setpoint can be adjusted F Stop NotOcc OccCool OccHeat 2 C Stop NotOcc OccCool OccHeat 1 63 2605 5 16 3 The Maximum Occupied Heat 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 A or down V until the desired temperature is displayed 3 Press Occupied Cool 4 Press up A
40. ide 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 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 to using the economizer is that during the Not Occupied period if there is no call for cool or outdoor air is not suitable for free cooling the economizer is controlled to minimum position This position allows some percentage of outdoor air to enter the building regardless of air suitability The situation can cause the heating or cooling to run more often than when only suitable air is permitted to enter the building The T7350 can take advantage of an economizer by closing the auxiliary relay contacts to control the economizer minimum position potentiometer See Table 16 for details Powered Allows normal economizer operation Unpowered Disables the economizer minimum position The lack of power causes the economizer to drive dampers fully closed instead of staying at minimum open position This reduces the possibility of unsuitable outdoor air entering the building which lowers the internal load on the HVAC system and saves additional energy Table 16 Auxiliary Rel
41. ied up A down W and e 2 Lockout all keys except NOTE Pressing Run Copy again while in this mode displays the T7350 firmware version number 63 2605 5 12 options lockout special keypresses See the Special Functions section for details 4 Oncethe proper option is chosen exit Installer Setup by pressing Run Schedule 5 The display prompts SAV CFG save configuration If you want to save it use the up A or down V key to change NO to YES before pressing Run Schedule again Configuration 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 Limited configuration can be done with the keypad In order to determine the proper codes to use for the Configuration Variables CnfgID a PDA is required Open the PDA Config Tool Application Select the desired configuration On the summary screen tap CnfglD The PDA determines the proper CnfgID Make note of the values Press both Copy and Run Schedule Tap until C1 appears on the right end of the display Adjust each variable to match the PDA indication a Hold down the up A or down V key to adjust the value quickly b Tap the up A or down V key for fine control 9 Press to switch to another variable 10 Return to step 8 and repeat the process until all digits are set properly 11
42. ied setting for length of time defined by installer a Occupied User can modify setpoints F Temporary Not T Sets holiday length Occupied User selects number of days 0 99 or for continuous override Schedule Day Selects day schedule to modify Used also with copy key Occupied 1 Selects occupied event start times for specified day AT Repeatedly press this key to toggle between two occupied events Not Occupied 4 Li Selects not occupied event start times for specified day Repeatedly press this key to toggle between two not occupied events Clear Clears start time for specified period and day Start Time R Copy Copies schedule from one day to another System Selects System Mode Toggles through Em Heat Heat Off Cool and Auto modes Fan e Selects fan operation mode Toggles between On and Auto Run Schedule Resumes running schedule Cancels Temporary Not Occupied action and or Temporary setpoint changes a Fan On Continuous fan operation occupied and standby During not occupied periods fan cycles with call for heat or cool Fan Auto Fan cycles with call for heat or cool during all periods See Fan Settings section for more details NOTE The display returns to the default screen after pressing Run Schedule or after a period of time without keypress 63 2605 5 ten seconds when returning from temporary setpoint changes info screen tem
43. ir Capability Isolated Yes T7350H1017 Modulating 2 modulating 2 relay Humidity Occupancy ALI Yes Outdoor Discharge Air Capability pen T7350M 4 20 mA output 2 10 Vdc with 500 ohm resistor Yes No All models are down selectable and can be configured to control fewer stages than the maximum allowed gt One extra stage of either heat or cool can be configured using the auxiliary relay Heat pump applications for these models have a maximum of two heat stages and two cool stages Mounting Means Mounts on subbase Subbase Mounts On Wall Using two 5 8 in long 6 32 screws included Outlet Box Using sheet metal screws Throttling Range for Modulating Outputs Automatically adjusts based on heat cool stages Manually adjustable with PDA Clock Accuracy at 77 F 25 C 1 min month 30 days Minimum Stage Operation Time fixed Minimum On Heat 1 minutes Cool 3 minutes Minimum Off Cool and Heat Pump 1 minute Electrical Ratings Power 24 Vac 50 60 Hz 20 to 30 Vac 50 60 Hz Input Temperature 20K ohms Humidity 0 10 Vdc Outdoor 3000 PTC Discharge Air 20K ohms Occupancy Sensor Dry contact switching 30 Vdc at 1 mA All Relay Outputs at 30 Vac Running 1 5A maximum Inrush 7 5A maximum Modulating Output 4 to 20 mA with 510 ohm maximum terminating resistance System Current Draw without load 5 VA maximum at 30 Vac 50 60 Hz NOTE Relays are N O Single
44. ling Range 3 4 7 5 Heat Integral Time 3100 2500 1650 1250 Cool Integral Time 3100 2500 1650 1250 ZIRE and TUNGSTEN are trademarks of palmOne Inc LonMark Lon Talk 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 63 2605 5 38 39 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Automation and Control Solutions Honeywell International Inc Honeywell Limited Honeywell Limit e 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Toronto Ontario M1V 4Z9 customer honeywell com U S Registered Trademark Printed in U S A led 2007 Honeywell International Inc paper containing at least 10 63 2605 5 J Z Rev 07 07 post consumer paper fibers Honeywell
45. litates changes to a Number of Stages b Heating Response C OAT Lockout and DAT High Limit Setpoints for some models Stages Stages Heating Med amp cph Heating Med cph Response Response Action 9 E Enable ORT Lockout ORT SetPt 70 F ff Enable DAT High Limit DAT SetPt 110 EF T7350D T7350M Fig 33 Heating Config uration screen 14 Make changes and tap Next to proceed to the Outputs Screen 15 The Outputs screen facilitates changes to output type s NOTE When configured with an extra stage of heat or cool using the auxiliary stage the Outputs screen shows nothing but this indication 63 2605 5 32 16 17 18 19 Time of Dav Dehumid Hot Gas BP Time of Davy Economizer Dehumid Hot Gas BP Simple Dehurnid Simple Dehurnid HeatPump RevValve Acty Clg Fig 34 Outputs screen Make changes and tap Next to proceed to the Fan Screen The Fan screen facilitates changes to a Fan Switch On or Auto b Fan Operation Conventional or Electric Heat c Heat and cool extended operation Conventional FanSwitch on FanOperation Electric Heat Heat Ho Extended Op Ext 90 Cool DAAC EEES Fig 35 Fan screen 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 i
46. mation or would like to comment on our products or services please write or phone 1 Your local Honeywell Automation and Control Products Sales Office check white pages of your phone directory 2 Honeywell Customer Care 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 In Canada Honeywell Limited Honeywell Limit e 35 Dynamic Drive Toronto Ontario M1V 4Z9 International Sales and Service Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 63 2548 5 2 SPECIFICATIONS IMPORTANT The specifications given in this publication do not include normal manufacturing tolerances Therefore this unit might not exactly match listed specifications This product is tested and calibrated under closely controlled conditions minor performance differences can be expected if those conditions are changed T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Models See Table 1 Dimensions See Fig 1 Finish color Trident White Batteries No batteries required Table 1 T7350 Thermostat Features Maximum Stages Auxiliary LONWORKS Model Applications Heat Cool Features Relay Capability T7350A Conventional 40 4b Yes No 773508 Heat Pump 2 25 Outdoor Discharge Air Capability Yes T7350D 3 2 3 4 Humidity Occupancy Yes 17350H1009 Outdoor Discharge A
47. model selected T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT To configure a T7350 1 From the opening screen tap Select Existing Config See Fig 28 2 Select the desired configuration Honeywell T7350 Configuration Tool ExampleModelA ExampleModelE ExampleModelD ExampleModelii idavs chedule BD Contig 4 Cg Fig 28 Select Existing Config 3 This brings up the Summary screen From here you can make changes using the a Novice navigation screens that appear or b Advanced navigation screens using the hidden 8 menus These are designed for expert users 1 Access to the Advanced Navigation mode is obtained using one of the following methods a Tap the lower left Menu silk screen icon b Tap the Title Tab of any screen RESULT The Config Tool replaces the existing Screen Title Tab with the Advanced Navigation menu 9 displayed across the top of the screen 4 Tap SaveAs to save the changes under a new 5 The Summary screen facilitates changes to a Description b Model c Control Standard or Heat Pump Config Name ExampleModelL Description Control 10 Fig 29 Configuration Summary screen 11 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 31 c Occ upancy Sensor d Discharge Air Temp erature e Outdoor Air Temp erature
48. n until the desired start time is displayed 5 Repeat steps 3 and 4 for a given day 6 Repeat steps 2 through 5 until finished Program Holidays IMPORTANT Holidays must be first programmed with a PDA Day of Week mode forces the T7350 to ignore holidays With holidays set holiday schedule times can be changed using the keypad 1 Use the Schedule Day key to select Hol for Holiday schedule times 2 Press Occupied or Not Occupied to switch to the proper time period within the holiday 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 3 Press up A or down V until the desired time is displayed 4 Press Run Schedule IMPORTANT Invalid holidays are ignored Valid holidays require valid month day and duration Holidays such as the fifth Tuesday of a month with only four Tuesdays are also invalid Copying a Day Use the PDA or almost exclusively keys in the Schedule area of the keypad for this procedure Press Occupied Press Day to select the day to be copied Press Copy Press Copy again The following day is automatically selected For example If the day to be copied is Mon day Tuesday will automatically be selected 5 f necessary press Day until the day to receive the copy is displayed Boma NOTE To cancel the copy press Run Schedule before step 6 6 Press Copy NOTE DONE displays for two seconds then the program display reappears 7 Repeat steps 2 t
49. nal mp Conventional Heat Pu Description a 24 VAC Cooling transformer 2 R O 24 VAC Heating transformer 2 L D X Common aux aux Conventional Auxiliary relay or 3rd stage of heating or cooling Heat Pump Auxiliary relay or 2nd stage auxiliary W1 O B Conventional Stage 1 heating relay Heat Pump Changeover relay for heating B or cooling W2 W1 Conventional Stage 2 heating relay Heat Pump 1st Stage auxiliary heat relay Y1 Y1 Conventional Stage 1 cooling relay Heat Pump Stage 1 compressor relay 2 Y2 Conventional Stage 2 cooling relay Heat Pump Stage 2 compressor relay AS JAS Discharge Air Sensor connection 1 AS JAS Discharge Air Sensor connection 2 OS JOS Outdoor Air Sensor connection 1 OS OS Outdoor Air Sensor connection 2 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 Y1 Y1 Conventional Stage 1 cooling relay Heat Pump Stage 1 compressor relay Factory jumper between RC and RH for systems with one transformer b For changeover functional details see Operation section 63 2605 5 8 Terminal G
50. ncluding holiday programmed into each set The Weekly Schedule screen facilitates changes to the program schedule a Tap Modify See Fig 37 b Select a day to modify c Make changes to 1 Mode see Fig 38 NOTE To remove a given event change Mode to None 2 Time see Fig 39 d Repeat step c for all events until changes are complete for the given day NOTE To copy a day schedule check the appropriate boxes and click CopyDayTo See Fig 40 e Tap OK f Type in a name for the new schedule g Tap SaveAs Weekly Schedule w Select Mew Schedule 0 0 08 00 am Occ 10 00 pro UNO C WED 08 00 am Occ 10 00 pra UMOCC THU 08 00 am occ Fig 36 Weekly Schedule screen 20 21 Modify Schedule Day w Monday Events Made 1 Occupied 2 3 4 Mone i 0 sen OmMoToOW OF Time w Unoccupied w Hone Fig 37 Weekly Schedule modification screen Modify Schedule Day w Monday Eventi 3 4 Mone D sun 59 0 Hol OmMmoToOW OF None Fig 38 Weekly Schedule Mode modification Modify Schedule Day Monday Event Mode Ti 1 Occupied 2 w Unoccupied 3 Event Time EN Fig 39 Weekly Schedule Time modification 33 22 23 24 25 26 27 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Modify Schedule Day Monday Eventi Mode 1 w Occupied 2 3 4 w Mone il ni
51. ns the temperature by cycling stages of heating or cooling to meet setpoint Cycle rates in cycles per hour cph are set using a PDA NOTE Defaults are heat 6cph cool 3cph P I D Control The T7350 microprocessor based control requires that the user understands temperature control and thermostat performance A conventional electromechanical or electronic thermostat does not control temperature precisely at setpoint Typically there is an offset droop in the control point as the system load changes This is a phenomenon that most people in the industry know and accept IMPORTANT P I D Loop Tuning parameters are optimized for proper operation of a vast majority of HVAC systems Only when completely certain of necessary and proper changes should you alter these values Improper changes result in poor system performance and equipment problems such as compressor short cycling Other problems include wide swings in space temperature and excessive overdriving of modulating outputs All adjustments to Loop Tuning parameters should be gradual After each change allow the system to stabilize to accurately observe the effects of the change Then as needed make further refinements until the system operates as desired If adjustment of PID parameters is required use the following NOTE the items that follow the term error refers to the difference between the measured space temperature and the current actual space tem
52. nt 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 incorrect Room temperature display has been recalibrated Use PDA configuration software to recalibrate as desired Thermostat is configured for F or C display Press both Run Schedule and Copy then reconfigure the display Bad thermostat location Relocate the thermostat Display shows three dashes and a degree sign all systems shut down T7350 is set for remote sensing and sensor is missing or circuit is either open or shorted Temperature settings will not change Example Cannot set heating higher or cooling lower Upper or lower temperature limits were reached Check the temperature 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 remo
53. ode 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 configuration parameter values and change one or more configuration parameters save new configuration file NOTE The configuration tool verifies that the subbase supports the existing arrangement CONFIGURATION PROCEDURE 1 Enter the T7350 PDA application See Fig 27 2 If disconnected the only usable functions are a New Config 1 Enter a name for the configuration 2 Tap New Config 3 Proceed to Select Existing Config uration section b Select Existing Config See below Honeywell T7350 Configuration Tool Version 0 0 9 336 C ExampleModelA ExampleMlodelB ExampleModelD ExampleModelll tor Data lidays Schedule 4 Ce Fig 27 PDA configuration tool main menu Select Existing Config uration This function is used to select a programmed configuration when setting up programming a T7350 This can be useful when you use any given configuration more than once NOTES You can modify details of a given configuration prior to downloading it into any particular T7350 PDA tool will notify you when a selected configuration requires more stages features than the T7350 into which you are downloading it Configuration screens will vary depending on the T7350
54. ogic Occupancy Call for Heat Cool Scheduled Sensor Signal Yes No Occupied Occupied On On Occupied Standby On Off Standby On On Not Occupied On Off n heat mode when set for conventional heat the equip ment i e plenum switch could power the fan despite the T7350 Set Day Time id Override F Temporary Temporary Day Time Occupied Not Occupied Day Occupied Not Occupied Start Time System Fan Run Copy HEAT COOL ON AUTO Schedule Lo jJ fft Cary mj L Lo M19610 Fig 9 Thermostat key locations 11 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT INSTALLER SETUP For most applications the thermostat factory settings do not NOTE When power is first applied to the thermostat the need to be changed Review the factory settings in Table 10 display will show all segments see Fig 10 Table 10 Keypad Configurable Installer Setup Options Configuration Option Factory Default Description Degree temperature display DEG F Temperature display F or C Remote room temperature sensor LOC SEN LOC Use Local temperature sensor REM Use Remote temperature sensor Clock format 12HRCLK 12HR 12 hour clock format 24HR 24 hour clock format Keypad lockout level KYLCK 0 Keypad lockout enable disable through special keypad sequence 0 No lockout 1 Lockout all keys except Temporary Occupied Temporary
55. on is the default start point when time is unknown Only Available if user selected one or more of following Dehumidification Reset Dehumidification Minimum On or Dehumidification Reheat Config ID cannot handle Standby setpoints Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship The T7350 algo rithm never allows the effective setpoint outside Not Occupied setpoints 63 2605 5 36 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 20 Thermostat Setup Options Through PDA Continued Configuration Option Factory Default sl CnfglD Description Dehumidification Reset Temp 2 F X Amount of reset used with Dehumidify Reset Range 1 to 5 F Setpt Must be smaller than occupied zero energy band ZEB or standby ZEB Dehumidification Reheat None X X None No Reheat dehumidification Enable Dehumidification using Reheat Dehumidification High Limit 65 X xe Dehumidification High Limit Range 10 to 90 Clock Year 1999 X Range 2000 to 2035 Clock Month 12 X 1 January 12 December Clock Day Wed X Day of the Week Sun Mon Tue Wed Thu Fri Sat Clock Minutes 11 15 p m X X 12 00 a m Midnight first minute of the day 12 00 p m Noon Holiday Month 0 X Unprogrammed January December Holiday Day 0 X Unprogrammed 1 2 31 LASTDAYOFMONTH LAST SAT Holiday Duration 0 days X Duration of given Holiday in days Range 0 to 99 da
56. or Monday through Friday Saturday Sunday Holiday default to Unprogrammed None Event Astate Nop occupied x P 12 00 a m All Events can be set for Standby or None Event 3 State None X x Only Events 1 and 3 can be set for Occupied Event 4 State None X X Only Events 2 and 4 can be set for Not Occupied Note The Config ID cannot set an event to Standby but it can change the time Event 1 Time 8 00 a m X X Scheduled time for event change s 12 00 p m Noon Event 2 Time 10 00 p m X X 12 00 a m Midnight Event 3 Time 12 00 a m X X Event 4 Time midnight X x The Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21 b 12 00 Noon is the default start point when time is unknown Only Available if user selected one or more of following Dehumidification Reset Dehumidification Minimum On or Dehumidification Reheat Config ID cannot handle Standby setpoints Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship The T7350 algo rithm never allows the effective setpoint outside Not Occupied setpoints c d 37 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 21 Exceptions to Factory Defaults T7350D T7350M Configuration Option T7350A T7350B T7350H1009 T7350H1017 Heat Output Stages 1 2 3 0 Cool Output Stages 1 2 3 0 Room Humidity Sensor None None Local Local Heat Throttling Range 3 4 7 5 Cool Thrott
57. or down V until the desired temperature is displayed Press Not Occupied Heat Press up A or down V until the desired temperature is displayed 7 Press Not Occupied Cool 8 Press up A or down V until the desired temperature is displayed 9 Press Run Schedule on Temperature Setpoint Overrides IMPORTANT The setup determines the duration of Occupied overrides Default duration is three hours NOTE To cancel the Override and immediately return to the program press Run Schedule T7770 Setpoint Knob A T7770 setpoint knob can remotely adjust the T7350 setpoint Adjustment can be made with the sensor in override NOTES During override only occupied and standby heat setpoints and cool setpoints are adjusted maximum adjustment is 5 F 3 C With a disconnected or failed T7770 or a T7350 not set for remote setpoint offset is zero T7771 Setpoint Button A T7770 setpoint button can remotely adjust the T7350 setpoint Adjustment can be made with the sensor in override NOTES During override only occupied and standby heat setpoints and cool setpoints are adjusted maximum adjustment is 3 F 2 C With a disconnected or failed T7771 or a T7350 not set for remote setpoint offset is zero Changing Temperature Setpoint Until Next Program Period This is a simple change to perform even with the door closed 1 Press up A or down V until the desired temperature is
58. ow 596 Off percent 10r2 Staged On Off matches equipment Cycling stage operation Off 0 1 or 2 Off Off 0 percent See Table 15 for modulating output signal details To display the status of the modulating outputs 1 Cycle through information displays using the info key 2 The device displays a percentage value for each output a MODHEAT on one screen b MODCOOL on another screen Table 15 Modulating Output Signal Action 0 percent 100 percent Direct 4 mA 20 mA Reverse 20 mA 4 mA O B Terminal for Heat or Cool Changeover The O B terminal controls heat pump changeover The default operation is for the terminal to be powered when calling for heat or while the most recent call was for heat This corresponds to a typical O terminal NOTE The O B terminal can be configured to operate as a typical B terminal powered on call for cool 63 2605 5 18 Emergency Heat select T7350 Thermostats only With the system set for Em Heat auxiliary heat serves as stage one compressor stages are locked off The fan cycles with the auxiliary heat Equipment Protection As part of the operational sequence the T7350 microprocessor 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 maintai
59. p 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 PROGRAMMING The thermostat operates at the Occupied temperature setting until the thermostat is programmed Table 12 shows the default temperature settings The program has four Occupied heat Occupied cool Not Occupied heat Not Occupied cool Table 12 Occupied and Not Occupied Default Temperature Settings Control Occupied Not Occupied Heating 70 F 21 C 55 F 13 C Cooling 75 F 24 C 85 F 29 C The thermostat can be set for two Occupied and two Not Occupied times for each day of the week 28 independent time settings Programming Holidays provides a total of 32 independent time settings The Temporary Occupied key provides quick temporary temperature changes for increased occupant comfort The Temporary Not Occupied key provides energy efficient operation for extended periods of time IMPORTANT Programming the thermostat with the keypad requires 24 Vac turn on system power Keyboard lockout must be disabled NOTE Before starting the program procedure use Table 13 to organize the program schedule Table 13 Occupied and Not Occupied Period Start Times T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Setting Current Day Time This can be done using the keypad or a PDA inte
60. perature setpoint The Throttling Range TR also called Proportional Gain determines the impact of the error on the output signal Decreasing TR amplifies the error effect that is for a given error smaller TR causes higher output signal The Integral Time IT also called Integral Gain determines the impact of the error over time on the output signal Error over time has two components making up its value amount of time the error exists and size of the error The higher the IT the slower the control response In other words a decrease in IT causes a more rapid change to the output signal The Derivative Time DT also called Derivative Gain determines the impact of the error rate on the output signal The error rate is how fast the error value changes It can also be the direction the space temperature is going either toward or away from the setpoint and its soeed rapid or slow A decrease in DT causes for a given error rate a greater effect on output signal Recovery Ramping Logic The T7350 incorporates a ramping feature that gradually changes the space setpoints During recovery operation the setpoint changes at a rate in degrees per hour depending on the outdoor air temperature If there is no outdoor air temperature sensor available the minimum ramp rate is used When recovering in heating the control point raises gradually maximizing the use of the more economical first stage heat to bring the sen
61. pressor 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 than Cool Lockout Setpoint Cool Lockout Setpoint 35 F X Cooling is locked out if the outdoor temperature is less than this setpoint Range 40 to 120 F Cooling Valve Direct X X Modulating Cooling Valve Action Direct or Reverse T7350M only Heating Valve Direct X X Modulating Heating Valve Action Direct or Reverse T7350M only Anticipator Authority Htg X X Htg Authority applies to heating only Application Htg amp Clg Authority applies to both heating and cooling Found in Loop Tuning Anticipator Authority 4 F X X Thermostat Anticipator Authority Range 2 to 15 F Cooling TR a X Cooling Throttling Range Range 1 to 30 F Found in Loop Tuning Cooling IT a X Cooling Integral Time Options 0 100 to 5000 sec 0 disable Cooling DT 0 sec X Cooling Derivative Time Options 0 10 to 3000 sec 0 disable Heating TR a X Heating Throttling Range Range 1 to 30 F Found in Loop Tuning Heating IT a X Heating Integral Time Options 0 100 to 5000 sec 0 disable Heating DT 0 sec X Heating Derivative Time Options 0 10 to 3000 sec 0 disable Display Units F X X Temperature Display F or C Clock Format
62. quipment is not operating 24 Wait one minute after seeing the on indicator and then check the registers Verify operation of heating or cooling equipment in Test Mode T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT WIRING DIAGRAMS FIG 17 25 SUBBASE 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 M19764A Fig 17 Typical hookup of T7350A in two stage heat and one stage cool conventional system with two transformers OUTDOOR AIR SENSOR T7770 REMOTE SENSOR COMPRESSOR CONTACTOR 2 DISCHARGE AIR SENSOR m ECONOMIZER HEATING COOLING TRANSFORMER TRANSFORMER L HOT 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 M19765A Fig 18 Typical hookup of T7350B in two stage heat and two stage cool conventional system with two transformers 25 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT OUTDOOR AIR AUX HEAT T7770 REMOTE SENSOR SENSOR STAGE 1 DISCHARGE AIR COMPRESSOR SENSOR CONTACTOR 2 T6 T7 ens ECONOMIZER HEATING COOLING TRANSFORMER TRANSFORMER A POWER SUPPLY PROVIDE
63. rface IMPORTANT Once you set the day time once you should not need to set it again As a result once a PDA sets the day using calendar mode MM DD YYYY keypad changes to the day are not allowed NOTES To allow keypad day changes use a PDA 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 Tuesday Wed Wednesday Thu Thursday Fri Friday Sat Saturday 2 Press Set Time 3 Press A or down V until the current time is displayed NOTE Tapping Set Time changes the time in one hour increments 4 Press Run Schedule Setting Schedule Times Use the PDA or the keys in the Schedule area of the keypad for this procedure Occupied Not Occupied Period 1 Occupied Period 2 Not Occupied Period 2 1 Press Occupied Day Period 1 Monday Tuesday Wednesday Thursday Friday Saturday Sunday Holiday Only applies to holidays programmed with 365 day calen dar NOTE 12 00 PM is Noon and 12 00 AM is Midnight NOTE Anytime a start time is not required press Clear Start Time 2 Press Day until the desired day is displayed 3 Press Occupied or Not Occupied until the proper period is displayed 4 Press up A or dow
64. scharge air and humidity sensors Auxiliary subbase contact typically interface with a Honeywell Economizer System for total rooftop control integration or act as dehumidification output Universal Versaguard Thermostat guards available T7350H provides networking capability on LonWorks Bus using a Free Topology Transceiver FTT T7350H Conforms to LonMark Space Comfort Profile for rooftop applications continued Contents SPSCIICATIONS HP 3 Installation 6 Sure 11 Installer Setup einn 12 Programming iiri iere 15 gi M 18 Troubleshooting Guide Table 19 23 Wiring Diagrams Fig 17 25 25 Appendix PDA Usage 30 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT FEATURES continued from page 1 Features Available via PDA Configuration Features via Optional Network Model H 365 day clock with holiday programming Communications on LonTalk network Automatic Daylight Saving Time adjustments Network Tools LonSpec CARE have ability to Selectable dehumidification limit control configure all PDA available features T7350 Network data inputs including outdoor air temperature Occupancy Sensor Electric Demand Occupancy input to control standby s
65. sed temperature to the desired comfort setpoint This minimizes using the typically more expensive later stage s of heat NOTE SeeFig 11 for a pictorial representation of the heat ramp rate determination Recovery Ramping for Conventional Systems HEAT RECOVERY RAMP RATE DEGREES HOUR MaxHtRamp MinHtRamp OUTDOOR AIR TEMPERATURE OaTempMinHtRamp OaTempMaxHtRamp M10109A Fig 11 Heat setpoint ramping for conventional systems NOTES 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 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 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 HEAT PUMP SETPOINT OCCUPIED FOR COMPRESSORS SETPOINT NORMAL RECOVERY RAMP AUX HEAT STAGE 2 RAMP NOT OCCUPIED AUX HEAT SETPOINT 7 STAGE 1 RAMP SPACE TEMPERATURE RECOVERY TIME gt OCCUPIED TIME M19877 Fig 12 Heat setpoint ramping for heat pump systems Heat pump ramping for heating proceeds as follows 1 The heat pump setpoint begins to ramp until the room temperature and the compressor ramp intersect 2 Atthis point
66. ss Run Schedule EmHeat iX Off Cool Auto Dehumid OnAuto M19611 Fig 10 LCD display of all segments NOTE Installer Setup is automatically exited after five Setup Using Keypad minutes with no key pressed Upon this auto matic exit all changes are lost The installer uses the Installer Setup to customize the thermostat to specific systems See Table 10 The table includes all the configuration options available For basic Setting Keypad Lockout setup functions the thermostat can be configured using the Proper keypad sequences activate the lockout features To keypad change the keypad lockout state 1 Enter the Installer Setup press and hold both the Run NOTE The T7350 has serial communications to facilitate Schedule and the until DEG or DEG C use of an installer configuration tool More advanced displays features are available using this tool See the 2 Press until KYLCK displays Appendix for details 3 Use the up A or down Y key to change the setting TG Options are A combination of key presses are required to use the Installer 0 No lockout Setup feature 1 Lockout all keys except Temporary Occupied 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 Setup item press NOTES Options 1 and 2 do not allow adjustments on dehumidification high limit Temporary Not Occup
67. t Discharge Air Sensors Dynamic Heap 256K bytes C7041B 12 in 152 or 305 mm Free RAM Space 1000K bytes C7041C 18 457 mm Serial Communications RS 232 C7041J 12 ft 3 66 m averaging C7770A 8 in 203 mm probe Approvals Outdoor Air Sensors C7089A C7170A European Community Mark CE Listed C7031G2014 weatherproof UL 873 Recognized NEC Class 2 Temperature Sensors Remote C7772A T7770A1006 FCC Part 15 subpart J Class A T7770B1046 T7770C1044 T7770D1000 T7771 cUL Economizer Logic Modules W6210 W6215 W7210 W7212 W7215 W7459 Table 2 Default Setpoints Humidity Sensors H7625 H7635 PDA Units Palm V M125 and i705 handhelds Not TRGPro handheld ZIRE 71 handheld Control Occupied Occupied Standby TUNGSTEN T handheld Heating 70 F 21 C 55 F 13 C 67 19 C Others o o o o 209541B FTT network termination module eon a eel 209651A Vertical Mounting Hardware Wallplate Adapter Trident white 2 3 16 56 50000083 001 Thermostat Interface Module TIM 50014064 001 Infra Red e 634 171 40 il 50000452 001 Troubleshooting Cable ry AK3797 Single pair network cable plenum rated U L Type CMP AK3798 Single pair network cable U L Type CMR AK3799 Double pair network cable plenum rated lt C gt 4 112 U L Type CMP 114 Q7740A FTT network 2 way repeater Q7740B FTT network 4 way repeater TG51
68. t the configuration to delete 5 Tap DELETE 6 A prompt appears allowing you to cancel the deletion 7 To delete more configurations return to step 4 8 When finished with deletions tap DONE Weekly Wkly Schedule This function is used to upload modify download schedule sets for programming a T7350 This can be useful if you want to change only schedule settings NOTE The schedule can also be modified from within a given configuration Holidays This function is used to upload modify download holiday sets for programming a T7350 This can be useful if you want to change only holiday settings It is especially useful if you use any group of holidays more than once NOTE The holidays can be modified from within a given configuration To create a new holiday group 1 From the main menu tap Holidays See Fig 43 NOTE The only holidays displayed are those contained in a program set It is possible to have as many as 10 holidays programmed into each set 63 2605 5 34 pm o Select Mew Holiday Group MEMENTO Mew Years Dav Jan 1 Dur Memorial Day May Lasthon Dur 1 Independence Day Jul 4 Dur 1 Labor Da Fig 43 Holiday screen 2 Tap Modify See Fig 44 Modify Holiday Select Holiday Start Month w Jan Start 14 ah Duration 1 w Day Fig 44 Holiday modification screen 3 Select a holiday slot to modify or create 4 Make changes to a Holiday title b Start
69. te 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 Checkifthe 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 DAT high limit has been reached or OAT lockout is engaged e Ifthe setpoints are correct do nothing Use PDA Heating Config to adjust or disable DAT high limit and or OAT lockout Check HVAC equipment to ensure proper operation 23 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Table 19 Troubleshooting Information Continued Symptom Cooling will not come on System indicator flame heat snowflake cool is displayed but no warm or cool air is coming from the registers 63 2605 5 Possible Cause No power to the thermostat Action Check that X terminal is connected to
70. the heat pump setpoint performs a step change to the Occupied or Standby setpoint and all auxiliary heat stages are disabled NOTE The heat pump setpoint remains here for the rest of the Not Occupied period 3 The stage one auxiliary heat ramp is calculated based on a steeper slope starting 1 F 0 5 C below the not occupied setpoint 4 When the room temperature intersects this auxiliary heat ramp the first stage of auxiliary heat is enabled 5 The stage two auxiliary heat ramp is calculated based on an even steeper slope starting 2 F 1 C below the not occupied setpoint 6 When the room temperature intersects this auxiliary heat ramp the second stage of auxiliary heat is enabled During the cool recovery period the setpoint changes at a rate in degrees per hour relative to the outdoor air temperature If there is no outdoor air temperature sensor available the minimum ramp rate is used See Fig 13 for the various setpoints NOTE For cooling the same method is used in both conventional and heat pump systems 63 2605 5 T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT COOL RECOVERY RAMP RATE DEGREES HOUR MaxClRamp MinClRamp OUTDOOR AIR TEMPERATURE OaTempMinClRamp OaTempMaxClRamp M10111A Fig 13 Setpoint ramping parameters with ramp rate calculation NOTE The setpoint used during the cool recovery period is similar to the heat mode in Fig 11 except the slope of the line reverses for
71. the system transformer Check for 24 Vac between X and RC 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 Checkifthe 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 DAT low limit has been reached or OAT lockout is engaged The call for heat or cool is not yet given e Ifthe setpoints are correct do nothing Use PDA Cooling Config to adjust or disable DAT low limit and or OAT lockout Check HVAC equipment to ensure proper operation Check if any stage indicators dots next to the system indicator are displayed With no display of stage indicators no call for cool heat via relay is yet given For T7350M models only Check the information screens MODHEAT or MODCOOL percentages of zero and 100 indicate an extreme signal from the given terminal See Table 15 for details Conventional heating equipment turns the fan on only after the furnace has warmed to a setpoint Heating or cooling e
72. ys Delays On X X On Delays on relays sequential start etc are active Off Delays disabled also called Test Mode System Switch Auto X X System settings Auto Cool Off Heat Emergency Heat valid if Heat Pump Fan Switch On X X Fan setting On Auto Occupied Heat Setpt Stop 55 F X Occupied Minimum Heat Setpoint Lowest the programmed occupied heating setpoint can be adjusted Range 40 to 90 F Value lt OccHt x 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 gt OccCl gt OccHt 2 F Not Occupied Heat Setpoint 55 X X Not Occupied heating setpoint Range 40 to 90 F UnoccHt lt OccHt lt OccCl 2 F UnoccHt lt StdByHt lt StdByCl 2 F Standby Heat Setpoint 67 F X d Standby heating setpoint Range 40 to 90 F Occupied Heat Setpoint 70 F X X Occupied heating setpoint Range 40 to 90 F Occupied Cool Setpoint 75 F X X Occupied cooling setpoint Range 45 to 99 F Standby Cool Setpoint T8 F X d Standby cooling setpoint Range 45 to 99 F Not Occupied Cool Setpoint 85 F X X Not Occupied cooling setpoint Range 45 to 99 F UnoccCl gt OccCl gt OccHt 2 F UnoccCl gt StdByCI gt StdByHt 2 F Event 1 State Occupied X X Day Schedule is a structure of 8 days of 4 events each day Defaults listed are f

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