Honeywell T7350 manual

PRODUCT DA T A Put Bar Code Here 63-2605—5 T7350 Commercial Programmable Thermostat FOR SINGLE- OR MTG512ULTI-ST AGE CONVENTIONAL/HEAT PUMP SYSTEMS APPLICATION The T7350 Commercial Programmable Thermostat controls 24 V ac commercial single zone hea ting, ventilating and air conditioning (HV AC) equipment. The T735 0 consists of a thermostat and s[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2548—5 2 ORDERING INFORMATION When purchasing replacement and modernizat io n products from your TRADELINE® whol esaler or distributor , refer to the TRADELINE® Catalog or price sheets for complete ordering number . If you have additional questions, need further information, or w oul d like to comment[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 3 63-2605 —5 SPECIFICATIONS IMPORT ANT The specifications given in this publication do not include normal manufacturing tole rances. Therefore, this unit might not exactly match liste d specifications. This product is tested and calibrated und er closely controlled conditions; minor performance differences[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 4 PDA System Requirements: Palm OS ® : 3.5.x to 5.2.1 Dynamic Heap: 256K bytes. Free RAM S pace: 1000K bytes. Serial Communications: RS-232. Approvals: European Community Mark (CE) Listed. UL 873 Recognized, NEC Class 2. FCC Part 15 subpart J Class A. cUL. T able 2. Default Setpoint s. Fig. 1. T[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 5 63-2605 —5 Fig. 2. T7350H LonMark Sp ace Comfo rt Controlle r Rooftop Object (8504) with Node Object. nv28 nv26 nvoSpaceT emp SNVT_ temp_p nv27 nvoUnitStatus SNVT_hvac_status nvoEffectSetpt SNVT_temp_p Hardware Output Hardware Output Hardware Input Hardware Input SCC-Rooftop Object Number 8504. Mandatory[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 6 INSTALLATION When Installing this Product... 1. Read these instructions carefully . Failure to follow them could damage the product o r cause a hazardous condition. 2. Check ratings given in instructions and on the product to ensure the product is sui table for your application. 3. Installer mu[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 7 63-2605 —5 — for a vertical box, part 209651A is required. — Mount to Euro pean standard wall box (h aving 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 wallpl ate is only for appearance. The thermos[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 8 Wiring CAUTION Electrical Shock or Equipment Dama ge Hazard. Can shock in dividuals or sh ort 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 (ø[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 9 63-2605 —5 T able 5. T7350D Subbase for Three-stage Heat, Three-stage Cool Systems. a Factory jumper between RC and RH for systems with one transform er . b For changeover fun ctional details, see Operation section. T able 6. T7350H Subbase for Three-stage Heat, Three- stage Cool Systems with Network Com[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 10 T able 7. T7350H Subbase for Modulating Systems with Network Communications. a Factory jumper between RC and RH for syste ms with one transform er . b Floating auxiliary contact (not connected to transformer hot or common). T able 8. T7350M Subb ase for Modulating Sy stems. a Factory jumper be[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 11 63-2605 —5 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, • display present setting, • set system a nd fan operation[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 12 INSTALLER SETUP For most applications, the ther mostat factory settings do not need to be changed. Review the factory setti ngs in T able 10. NOTE: When power is first ap pl ied to the thermostat, the display will show all segments (see Fig. 10). T able 10. Keypad Configurable Installer Setup [...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 13 63-2605 —5 — No options lockout specia l keypresses. See the S pecial Functions section for details. 4. Once the proper optio n is chosen, exit Installer Setup by pressing Run Schedule . 5. The display prompts SA V CFG (save configuration). If you want to save it, use the up S or down T key to change [...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 14 T able 1 1. T7 350 Key Function Summary . a Fan On: Continuous fan operation (occupi ed and standby). During not occupied periods, fan cycles with call for heat or cool. Fan Auto: Fan cycles w ith call for heat o r cool during all periods. (See Fan Settings section for mo re details.) NOTE: Th[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 15 63-2605 —5 PROGRAMMING The thermostat operates at the Occup ied temperature setting until the thermostat is programmed. T able 12 shows the default temperature settings. (The program has four): — Occupied heat. — Occupied cool. — Not Occupied heat. — Not Occupied cool. T able 12. Occ upied and N[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 16 3. Press up S or down T until the desired time is displayed. 4. Press Run Schedule . IMPORTANT — Invalid holidays a re ignored. — V alid holidays require valid : month, day and duration. — Holidays such as the fifth T uesday of a month with only four T uesdays are also invalid. Copying a[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 17 63-2605 —5 Using T emporary Occupied Override The T emporary Occupied Override can be used when the T7350 is in Not Occupied or S tan dby mode. It s witches to the Occupied mode for a fixed number of hours. 1. T o use the default occupied ove rride, press Te m p o r a r y Occupied . NOTE: The default te[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 18 OPERATION Startup Operation Upon initial thermostat poweru p, a startup and initiali zation program begins. This startup occurs only on initial powerup. After tota l loss of power for an extended peri od, the current time and day can be lost (requ iring reset). However , the thermostat retains[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 19 63-2605 —5 —T h e 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 chan ges. It can also be the directio n the space temperature is going, either toward or away from the setpoint, and its speed?[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 20 Fig. 13. Setpo int ramping p a rameters with ramp rate calculatio n. NOTE: The setpoint used during the cool recovery period is similar to the heat mode in Fig. 1 1, except the slope of the line reverses for co oling. Advantages: • Comfort setting is achieved at the programmed time and maint[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 21 63-2605 —5 Fig. 14. Using T7350A ,B,D,M models with an external relay (with loads greater than 1.5A). Fig. 15. Using T7350H models with an external relay powered from thermo st at transformer . Fig. 16. Using T7350H models with an external relay powered from an auxiliar y transformer . Default Auxiliary[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 22 Dehumidification (T7350D,M,H only ) There are five methods th rough which the T73 50 can control for dehumidification. Three of them modify the control algorithm, thus providing limite d dehumidification through cooling. The other two use the auxiliary output to control another device. IMPORT [...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 23 63-2605 —5 T ROUBLESHOOTING GUIDE (T ABLE 19) T able 19. T roubleshoo ting Information. Symptom Possible Cause Action Display will not come on. Thermostat is not being pow ered. Check that X terminal is connected to the system transformer . Check for 24 V ac between X and R H or RC terminals. If missing[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 24 Cooling will not come on. No power to the thermostat. C heck that X terminal is connected to the system transformer . Check for 24 V ac between X and RC terminals. If missing 24 V a c: • Check if circuit breaker is tripped; if so, reset circuit breaker . • Check if system fuse is bl own; i[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 25 63-2605 —5 WIRING DIAGRAMS (FIG. 17-25) Fig. 17. T ypical hookup of T735 0A in two-st ag e heat and one-stage cool conventio nal system with two transformers. Fig. 18. T ypical hook up of T7350B in two-stag e heat and two-stage cool conventional system with two transformers. POWER SUPPLY. PROVIDE DISCON[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 26 Fig. 19. T ypical ho okup of T7350B in three-st age heat a nd two-stage cool heat pump system with two transformers. Fig. 20. T ypical hookup of T7350D in thr ee-stage heat and thr ee-st age cool conven tional system wi th one transformer . POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD P[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 27 63-2605 —5 Fig. 21. T ypical hookup of T7350D in two-st age heat and fo ur-stage cool conventional s ystem. Fig. 22. T ypical hookup of T7350H1009 in three-stage h eat and three-stage cool conventional system with one transformer . POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIR[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 28 Fig. 23. T ypical hookup of T7350H1017 for sy stem wi th two independent heat stages (one modulating), two independent cool stages (one modulating), and two transformers. Fig. 24. T ypical hook up of T7350M for system with two independent h eat st ages (one mo dulating), two independ ent cool [...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 29 63-2605 —5 Fig. 25. T ypical hook up of T7350M for system with two independent h eat st ages (one mo dulating), two independent cool stages (one modulating), and two transformers. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 30 APPENDIX - PDA USAGE See T able 20 for the advanced setup options avai lable through a PDA. NOTE: Upon initial thermostat power-up, wait at least 30 seconds before connecting th e TIM. Hardware Requirements The Thermostat Configuration T oo l has the following configuration: • PDA hardware p[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 31 63-2605 —5 T o configure a T 7350: 1. From the opening screen, tap Select Existing Config. (See Fig. 28.) 2. Select the desired configuration. 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 ap pear), o[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 32 Fig. 32. Cooling Co nfig(uration) screen. 12. Make changes and tap “Next” to proceed to the H eating Config(uration) screen. 13. The Heating Config(uration) scre en facilitates changes to: a. Number of S tages. b. Heating Response. c. OA T Lockout and DA T High Limit Setpoints (for some mo[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 33 63-2605 —5 Fig. 36. Weekly Schedule screen. Fig. 37. Weekly Schedule modification sc reen. Fig. 38. Weekly Schedu le Mode modificatio n. Fig. 39. Weekly Schedule Time modific ation. Fig. 40. W eekly Schedule Mode CopyDayT o. 20. T ap “Next” to proceed to the SetPoints screen. 21. The SetPoints scree[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 34 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. T ap the Summary tab in the upper left corner . 3. Select File / Delete. 4. Select the configura tion to delete. 5. T ap DELETE. 6. A[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 35 63-2605 —5 Online Diagnostics Connect to a thermostat and, using the “Monitor Data” function, read diagnostic info rmation including: • Thermostat firm ware version. • Thermostat hardware version. • Subbase hardware version. • Run time error messages. T able 20. Ther mostat Setup Options Thr[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 36 T emperature Display Calibration No Change X No Change: Displayed temperature is actual roo m temperature. Can adjust to display u p to 3° F (1.7° C) higher or down to 4° F (2.2° C) lower than room temperature. T empOverride 3 X X T emporary Occupied Override duration. Ran ge: 1 to 8 hours[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 37 63-2605 —5 Dehumidification Reset T emp Setpt 2° F X Amount of reset used wi th “Dehumidify Re set”. Range: 1 to 5° F . Must be smaller than oc cupied zero energy band (ZEB) or standby ZEB. Dehumidification Rehe at Non e X X None: No Reheat dehumidi fication; Enable: Dehumidification using Reheat [...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2605—5 38 T able 21. Exceptions to Factory Defaults. ZIRE and TUNGSTEN are trademarks of palmOne, Inc. LonMark ® , LonT alk ® , Echelon ® and LonWorks ® are registered trademark s of Echelon Corporation. Palm OS ® is a registered trademark of Palm Computing, Inc. Palm ® is a registered tradema rk [...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT 39 63-2605 —5[...]

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Automation and Co ntrol Solutions Honeywell Internationa l Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered T rademark © 2007 Honeywell Internationa l Inc. 63-2605—5 J.Z. Rev . 07-[...]