T7200D,E Series 2000 Commercial Microelectronic Thermostats

Transcription

1 T7200D,E Series 2000 Commercial Microelectronic Thermostats INSTALLATION INSTRUCTIONS APPLICATION The T7200D,E Thermostats provide electronic control of 24 Vac commercial single-zone heating, ventilating and air conditioning (HVAC) equipment. The T7200 is field configurable for automatic or manual changeover between heating and cooling. The system and fan selections are made by keyboard entry. All T7200 Thermostats require a common wire to supply power. RECYCLING NOTICE If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat. INSTALLATION When Installing this Product 1. Read these instructions carefully. Failure to follow the instructions can damage the product or cause a hazardous condition. 2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your application. 3. Installer must be a trained, experienced service technician. 4. After completing installation, use these instructions to check out the product operation. Location Install the thermostat about 5 ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 1. YES NO NO 5 FEET (1.5 METERS) NO M4823A Fig. 1. Typical location of thermostat. U.S. Registered Trademark Copyright 1998 Honeywell Inc. All Rights Reserved X-XX UL

2 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. Mounting Wallplate The wallplate mounts horizontally on the wall or on a 2 in. x 4 in. wiring box. Position the wallplate horizontally on the wall or on a 2 in. x 4 in. wiring box. 1. Position and level the wallplate (for appearance only). The thermostat functions properly even when not level. 2. Use a pencil to mark the mounting holes. See Fig Remove the wallplate from the wall and drill two 3/16 inch (4.8 mm) holes in the wall (if drywall) as marked. For firmer material such as plaster or wood, drill two 7/32 inch (5.5 mm) holes. Gently tap anchors (provided) into the drilled holes until flush with the wall. 4. Position the wallplate over the holes, pulling wires through the wiring opening. 5. Loosely insert the mounting screws into the holes. 6. Tighten mounting screws. CAUTION Electrical Shock Hazard. Power source can cause electrical shock. Disconnect power before wiring to prevent electrical shock or equipment damage. 1. Loosen the terminal screws on the wallplate and connect the system wires. See Fig. 3. IMPORTANT Use 18-gauge, solid-conductor color-coded thermostat cable for proper wiring. If using 18-gauge stranded wire, do not use more than ten wires. Do not use larger than 18-gauge wire. 2. Securely tighten each terminal screw. 3. Push excess wire back into the hole. 4. Plug the hole with nonflammable insulation to prevent drafts from affecting the thermostat. WALL WALL ANCHORS (2) WIRES THROUGH WALL FOR WRAPAROUND INSERTION STRIP 7/16 IN. (11 MM). FOR STRAIGHT INSERTION STRIP 5/16 IN. (8 MM). M4826 Fig. 3. Proper wiring technique. THERMOSTAT X Y1 G W1 RH RC 2 MOUNTING HOLES COMPRESSOR CONTACTOR HEATING RELAY OR VALVE COIL LEDS MOUNTING SCREWS M10237 FAN RELAY 1 L1 (HOT) L2 Fig. 2. Mounting the wallplate. WIRING WALLPLATE All wiring must comply with local electrical codes and ordinances. Follow equipment manufacturer wiring instructions when available. Refer to Fig. 4 and 5 for typical hookups. A letter code is located near each terminal for identification. 1 2 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. JUMPER RC AND RH FOR SINGLE TRANSFORMER SYSTEMS. M4942A Fig. 4. Typical hookup of T7200D in single-stage heating and cooling conventional system

3 X Y G O COMPRESSOR CONTACTOR THERMOSTAT COOL CHANGEOVER VALVE R override the program temperatures, display present setting, set system and fan operation, configure Installer Setup, check Installer Test. See Fig. 7 for thermostat key information. FAN RELAY A. ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE. 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 L1 (HOT) L2 M4943A Fig. 5. Typical hookup of T7200E in single-stage heat pump system. Mounting Thermostat on Wallplate The thermostat mounts on the wallplate after it is installed. 1. Engage the tabs at the top of the thermostat and wallplate. See Fig Press the lower edge of the case to latch. B. PRESS LOWER EDGE OF CASE TO LATCH. To remove the thermostat from the wall, first pull out at the bottom of the thermostat; then remove the top. SETTINGS Using Thermostat Keys The thermostat keys are used to: set current time and day, program times and setpoints for heating and cooling, ENTER OCCUPIED PROGRAM MODE ENTER UNOCCUPIED PROGRAM MODE SET CURRENT DAY OR PROGRAM DAY M4824A Fig. 6. Mounting thermostat on wallplate. SET OCCUPIED TEMPERATURE SETPOINTS SET UNOCCUPIED TEMPERATURE SETPOINTS AND SCROLLS THROUGH INSTALLER SETUP AND SYSTEM TEST AM Room RETURNS TO NORMAL OPERATIONS Run Program Mon Occupied Heat Set Program Set Temperature Change Time/Temp Start Time Start Time Day Temp Temp Auto INCREASE TEMPERATURE OR TIME SETTING SET OVERRIDE TEMPERATURE OFFSET AND ACTIVATE TEMPORARY OVERRIDE Temporary Occupied Continuous Set Current Day/Time Clear Start Time Copy Heat/Cool Settings DECREASE TEMPERATURE OR TIME SETTING ENTER HOLD MODE SET CURRENT DAY AND TIME CLEAR PROGRAM PERIOD SELECT SYSTEM OPERATION COPY ONE PROGRAMMED DAY TO ANOTHER DAY SELECT FAN OPERATION Fig. 7. Thermostat key locations and descriptions. CHANGE BETWEEN HEATING AND COOLING SETPOINTS AND SCROLLS BACKWARDS THROUGH INSTALLER SETUP NUMBERS AND SYSTEM TEST M10233A

4 Setting and (select models) The system default setting is Heat. The fan default is set so the fan operates continuously in the Occupied and Recovery modes and with the heating or cooling equipment in the mode. Use the and keys to change the settings. The system settings are: Heat: Thermostat controls the heating. Off: Both the heating and cooling are off. Cool: Thermostat controls the cooling. Auto: Thermostat automatically changes between heating and cooling operation depending on the indoor temperature. The fan settings are: On: operates continuously. Auto: Equipment controls the fan in the mode. The Intelligent operation (Installer Setup number 17) offers three choices for the fan operation in Occupied mode: fan turns on only when there is a call for heating or cooling, fan operates continuously in Occupied mode, fan is on continuously in Occupied and recovery modes. Setting Temperature Refer to Table 1 for the default temperature setpoints. See Owners Guide, form number , for complete instructions on changing the setpoints. Table 1. Default Temperature Setpoints. INSTALLER SETUP Control Heating 70 F (21 C) 55 F (13 C) Cooling 78 F (25.5 C) 90 F (32 C) For most applications, the thermostat factorysettings do not need to be changed. Review the factory-settings in Table 2 and if no changes are necessary, go to the Installer Test section. The Installer Setup is used by the installer to customize the thermostat to specific systems. Installer Setup numbers are listed in Table 2. The table includes all the configuration options available. A combination of key presses are required to use the Installer Setup feature. To enter the Installer Setup mode, press and hold the Heat/Cool Settings key while pressing both the increase and decrease keys until the first number is displayed. All display segments appear for approximately three seconds before the number is displayed. See Fig. 8 and 9. To advance to the next Installer Setup number, press the Temp key. To return to a previous Installer Setup number, press the Heat/Cool Settings key. To change a setting, use the increase or decrease key. To exit the Installer Setup, press the Run Program key. The Installer Setup is automatically exited if no key presses are made for four minutes. Set Program Start Time Set Day/Time Temporary Setting Enrg Em Ht Sav AM Aux Ht Room Comm PM %Humid MonTueWedThuFriSatSun Heat Cool Remote UnOccupied 12 Override In Recovery LoMedHi Auto Only Duct Em Heat OffCool Auto Wait OnAuto INSTALLER SETUP NUMBER DISPLAY (COLUMN 2 OF TABLE 2) Fig. 8. LED display of all segments. FACTORY SETTING OR OTHER CHOICE DISPLAY (COLUMN 3 OR 5 OF TABLE 2) Fig. 9. Installer Setup number and setting display. Installer Setup numbers are listed in Table 2. M4916 M10238B CAUTION Possible Equipment Damage. must be running when system is operating. Configure heat pump and electric heat systems in Installer Setup 2 to prevent equipment damage caused by the system running without the fan. IMPORTANT Only configurable numbers are shown on the device. Example: If the thermostat does not have a system key, Installer Setup Number 12 will not be displayed. Review Table 2 factory settings and mark any desired changes in the Actual Setting column. When Installer Setup is complete, review the settings to confirm that they match the system

5 Installer Setup Number (Press Temp key a Number 2 must be set to 1 to extend fan operation. b Some models may not have this feature.table 2. Table 2. Thermostat Installer Setup Options. Other Choices (Press or key to change) Factory Setting Actual Select to change) Display Description Display Description Setting Not used. 1 operationa (T7200D only). Degree temperature display. Intelligent operation. Keypad lockout level (keypad lockout is enabled and disabled by dip switch 1 on thermostat back). O/B Operationb (T7200E only). Minimum offtime for the compressor. Temperature display adjustment. 2 0 Conventional applications 1 Electric heat applications where equipment controls fan operation in heat mode. where thermostat controls fan operation in heat mode Temperature is displayed in F operates continuously in Occupied and Recovery mode. operates with call for heating or cooling in mode. 1 Temperature is displayed in C. 0 or 1 0 only operates with calls for heating or cooling in Occupied and modes. 1 operates continuously in Occupied mode. operates with calls for heating or cooling in mode No lockout. 1 or 2 1 Lockout all keys on thermostat except system and fan settings, temporary setpoint; clock and day adjustments. 2 Lockout all keys except set Current Day/Time, increase and decrease keys. 3 Lockout all keys except Temporary Occupied, Set Current Day/Time (for clock, day adjustments) Energize in Cool mode minute minimum off-time for the compressor No difference in displayed temperature and actual room temperature. 1 1 Energize in Heat Mode. 0, 1, 2, 3 or 5 Minimum number of minutes (0 thru 5) the compressor will be off between calls for the compressor. 1 thru 6 1 Display adjusts to 1 F (0.6 C) higher than actual room temperature. 2 Display adjusts to 2 F (1.1 C) higher than actual room temperature. 3 Display adjusts to 3 F (1.7 C) higher than actual room temperature. 4 Display adjusts to 1 F (0.6 C) lower than actual room temperature. 5 Display adjusts to 2 F (1.1 C) lower than actual room temperature. 6 Display adjusts to 3 F (1.7 C) lower than actual room temperature. (continued)

6 Run Program Temporary Occupied Continous Run Program Temporary Occupied Continous Run Program Temporary Occupied Continous Set Program Set Temperature Change Time/Temp Start Time Start Time Day Temp Temp Set Current Day/Time Clear Start Time Copy Heat/Cool Settings Set Program Set Temperature Change Time/Temp Start Time Start Time Day Temp Temp Set Current Day/Time Clear Start Time Copy Heat/Cool Settings Set Program Set Temperature Change Time/Temp Start Time Start Time Day Temp Temp Set Current Day/Time Clear Start Time Copy Heat/Cool Settings Run Program Set Program Set Temperature Change Time/Temp Start Time Start Time Day Temp Temp Temporary Set Current Clear Occupied Day/Time Start Time Continous Copy Heat/Cool Settings T7200D,E SERIES 2000 COMMERCIAL MICROELECTRONIC THERMOSTATS Table 2. Thermostat Installer Setup Options (Continued). Installer Setup Number (Press Other Choices Temp key Factory Setting (Press or key to change) Actual Select to change) Display Description Display Description Setting Minimum offtimes in heating minute minimum off-time. 0, 1, 2, 3, or 5 Minimum number of minutes (0 thru 5) the heating equipment will be off between calls for heat. Installer Setup No Installer Setup 1 1 Installer Setup lockout lockout (keypad lockout is enabled and disabled by dip switch 1 on back of thermostat). lockout. activated. IMPORTANT Review the settings to confirm that they match the system. Press Run Program to exit the Installer Setup. Set the current day and time immediately. Setting Current Day and Time 1. Press Set Current Day/Time. Set Current Day/Time On initial power up or after an extended power loss, 1:00 pm flashes on the LCD until a key is pressed. Mon Set Day/Time 2. Press Day until the current day is displayed. Day PM M4951B Sun=Sunday, Mon=Monday, Tue=Tuesday, Wed=Wednesday, Thu=Thursday, Fri=Friday, Sat=Saturday. 3. Press increase or decrease until the current time is displayed. Tue Set Day/Time PM M4952B 4. Press Run Program. Run Program Mon Occupied 1 Heat INSTALLER SYSTEM TEST Auto M4954A Use the Installer Test to check the thermostat configurations and operation. Refer to Table 3 for a list of the available system tests. Table 3. Tests Available in Installer Test. Test Number Test Description 10 to 19 Heating equipment can be turned on and off 30 to 39 Cooling equipment can be turned on and off 40 to 49 equipment can be turned on and off 60 0 to Keyboard keys test to 79 Thermostat information including date code, software versions and subbase identification are displayed To start the system test: AM Room Tapping the Set Current Day/Time changes the time in one hour increments. Tue Set Day/Time PM M4953B CAUTION Possible Equipment Damage. Equipment damage can result if compressor is cycled too quickly. The minimum off-time for compressors is bypassed during the Installer Test. Press and hold the increase and decrease keys, at the same time, until 10 appears. All segments of the LCD are displayed for three seconds before 10 appears. See Fig. 10 and

7 If a duct temperature sensor is installed, the duct temperature is also displayed. Refer to Table 4 and Thermostat Information section for directions and results of the specific system tests. Press Run Program to exit the system test. The system test times out after four minutes if there are no additional key presses. Set Program Start Time Set Day/Time Temporary Setting Enrg Em Ht Sav AM Aux Ht Room Comm PM %Humid MonTueWedThuFriSatSun Heat Cool Remote UnOccupied 12 Override In Recovery LoMedHi Auto Only Duct Em Heat OffCool Auto Wait OnAuto TEST NUMBER Fig. 11. Test number display. M10257A Fig. 10. LCD display of all segments. M4916 Table 4. Installer Test Options. Key to Press Test Number Description Heating Equipment Test Heat/Cool Settings 10 Enter heating equipment test. 11 Heat turns on. The system fan is also energized. 10 Heat and system fan turn off. Cooling Equipment Test Heat/Cool Settings 30 Change from heating to cooling equipment test. 31 Cool and system fan turn on. 30 Cool and system fan turn off. Equipment Test Heat/Cool Settings 40 Change from cooling to fan equipment test. 41 turns on. 40 turns off. Key Operation Test Heat/Cool Settings 60 2 Change from fan to key operation test. Temp 60 0 Temp test number is displayed. Occupied Temp 60 1 Occupied Temp test number is displayed Increase test number is displayed Decrease test number is displayed. Clear Start Time 60 7 Clear Start Time test number is displayed. Day 60 8 Day test number is displayed. Copy 60 9 Copy test number is displayed. Start Start Time test number is displayed. TIme test number is displayed. (select models) (select models) test number is displayed. Set Current Day/Time Set Current Day/Time test number is displayed. Run Program Run Program test number is displayed. Temporary Occupied Temporary Occupied test number is displayed. Occupied Start Time Occupied Start Time test number is displayed. Continuous Continuous test number is displayed

8 Thermostat Information 1. Press the Heat/Cool Settings key to access the thermostat information. 5. Press the increase key again to display the EEPROM identification code. (Example: 314 = EEPROM ID 314). M4934 M4933A 2. Press the increase key to display the production date code. The first two large digits are the month and the third digit is the last digit of the year. (Example: 036 = March 1996). 6. Press the increase key again to display the wallplate identification code. (Example: HP = heat pump wallplate). M10290 M Press the increase key again to display the software identification code. (Example: 02 = software ID code 2). M4932A 4. Press the increase key again to display the software revision number. (Example: 001 = revision number 1). 7. Press Run Program to exit the system test. The system test times out after four minutes without any key presses. Setting Keypad Lockout Switch The dip switch 1 on the back of the thermostat activates the Installer Setup lockout feature. The switch must be set to the ON position (up) to activate the lockout feature. See Fig. 12. The factory setting is off (down). Remove the thermostat from the wallplate and set the switch to ON if keypad lockout is desired. The level of lockout is determined by the Installer Setup number 40. ON 1 M DIP 1 IS ON DIP 2 IS NOT USED. BACK OF THERMOSTAT M10235 Fig. 12. Set Installer Setup lockout dip switch 1 on back of thermostat

9 TROUBLESHOOTING GUIDE Symptom Possible Cause Action Display does not turn on. Temperature display is incorrect. Temperature settings will not change. (Example: Cannot set heating higher or cooling lower.) Unable to configure Installer Setup. Temperature settings change from original setting. Room temperature is out of control. Heating does not turn on. No power to thermostat. Check that C terminal is connected to the system transformer. Check for 24 Vac between C and R terminals. If missing 24 Vac: check if the circuit breaker is tripped; if so, reset the circuit breaker. check if the system fuse is blown; if so, replace the fuse. check if the power switch on the HVAC equipment is in the Off position; if so, set to the On position. check wiring between thermostat and HVAC equipment and replace any broken wires and tighten any loose connections. If 24 Vac is present, proceed with troubleshooting. Room temperature display has been reconfigured. Thermostat is configured for F or C display. Bad thermostat location. Upper or lower temperature limits were reached. Installer Setup is locked out. Heating and cooling setpoints are set too close together. There is a deadband in automatic changeover thermostat models. Example: cool setpoint = 72, deadband = 3, heat setpoint = 68, changing heat setpoint to 70 automatically changes the cool setpoint to 73. Remote temperature sensing is not working. Enter Installer Setup number 37 and reconfigure the display. Enter Installer Setup number 14 and reconfigure the display. Relocate the thermostat. Check the temperature setpoints: Heating limits are 40 F to 90 F (7 C to 31 C). Cooling limits are 45 F to 99 F (9 C to 37 C). Reset the dip switch 1 on the back of the thermostat to enable keypad. Check that the heating setpoint is lower than the cooling setpoint. Checkout all remote sensors. No power to the thermostat. Check that C terminal is connected to the system transformer. Check for 24 Vac between C and R terminals. If missing 24 Vac: check if the circuit breaker is tripped; if so, reset the circuit breaker. check if the system fuse is blown; if so, replace the fuse. check if the system switch at the equipment is in the Off position; if so, set to On position. check wiring between thermostat and HVAC equipment and replace any broken wires and tighten any loose connections. If 24 Vac is present, proceed with troubleshooting. Thermostat minimum off-time is activated and wait indicator is displayed. selection is not set to Heat. Wait up to five minutes for the system to respond. Enter Installer Setup number 38. Reconfigure minimum offtime (if required). Set system selection to Heat. (continued)

10 Troubleshooting Guide (continued). Symptom Possible Cause Action Cooling does not turn on. on indicator (flame = heat, snowflake = cool) is displayed, but no warm or cool air is coming from the registers. No power to the thermostat. Check that C terminal is connected to the system transformer Check for 24 Vac between C and R or RC and Y terminals. If missing 24 Vac: check if the circuit breaker is tripped; if so, reset the circuit breaker. check if the system fuse is blown; if so, replace the fuse. check if the system switch at the equipment is in the Off position; if so, set to the On position. check wiring between thermostat and HVAC equipment and replace any broken wires and tighten any loose connections. If 24 Vac is present, proceed with troubleshooting. Thermostat minimum off-time is activated and wait indicator is displayed. selection is not set to Cool. Conventional heating equipment turns on the fan when the furnace has warmed up to a setpoint. Heating or cooling equipment is not operating. Wait up to five minutes for the system to respond. Enter Installer Setup number 33. Reconfigure minimum offtime (if required). Set system selection to Cool. Wait one minute after the on indicator lights and then check the registers. Verify operation of heating or cooling equipment in system test

11

12 By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys fees, arising out of, or resulting from, any modification to the literature by you. Home and Building Control Honeywell 1985 Douglas Drive North Minneapolis, MN Home and Building Control Honeywell Limited/Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z J.S. Rev