63-4038 - T7200, T7300 and Q7300 Programmable
Contents
1. COOLING RELAY LOW SPEED FAN RELAY 1 RELAY HIGH SPEED FAN RELAY 3K RELAY DAMPER CONTROL RELAY SYSTEM SWITCHING MICROPROCESSOR CONTROL POWER SUPPLY SUBBASE RELAY COMMUNICATION CONTROL AND COMMUNICATION nae CATION COMMUNICATION INCLUDES 4K TAIATA AND 5K RELAY 5 S REMOTE SENSOR AND OVERRIDE MODULE e 20 0 A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A FOR SINGLE SPEED FAN JUMPER GL AND GH A REFER TO T7147 INSTRUCTIONS FOR APPROPRIATE CA TERMINAL CONNECTIONS T7407 HAS T T TERMINALS ONLY M4378 63 4038 7 44 T7200 17300 Q7300 TROUBLESHOOTING Troubleshooting Refer to Figs 47 and 48 to troubleshoot problems with the thermostat and system Fig 47 Troubleshooting chart to quickly isolate a display or fan problem SYMPTON POSSIBLE CAUSE ACTION LCD TEMPERATURE Q7300 SWITCH 5 INCORRECTLY SET SYSTEM WITHOUT REMOTE SENSOR CHECK THAT SWITCH 5 DISPLAY IS IS IN ON POSITION SYSTEM WITH REMOTE SENSOR CHECK THAT SWITCH 5 IS IN OFF POSITION INCOMPLETE CIRCUIT CHECK WIRING FOR SHORTS OR OPENS BETWEEN THERMOSTAT AND REMOTE SENSOR LCD IS BLANK NO ac VOLTAGE TO THERMOSTAT CHECK POWER TO FURNACE OR AIR CONDITIONER ON OFF SWITCH FUSE OR CIRCUIT BREAKER LOOSE 24 VAC CONNECTION AT THERMOSTAT AT FURNACE AIR CONDITIONER INCORRECT WIRING2. MINIMUM POSITION POTENTIOMETER VIOLET L m D POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE ENTHALPY CONTROL MAKES TERMINALS 2 1 ON ENTHALPY RISE AND 2 3 ON ENTHALPY FALL amp RELAY REQUIRED R8222 OR SIMILAR IMPORTANT MIXED AIR SENSOR MUST BE LOCATED DOWNSTREAM OF THE EVAPORATOR COIL IN THE DISCHARGE AIR DUCT TO PROVIDE ECONOMIZER LOW LIMIT FUNCTION FIELD INSTALLED JUMPER ECONOMIZER MOTOR SPRING RETURNS CLOSED ANYTIME FAN IS NOT RUNNING 24 VAC ONLY PPP P PREP Ps TERMINAL AVAILABLE ON Q7300A B D E AND G MODELS ONLY M4411 33 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 36 T7300 07300A B with economizer package in 1 stage cool system defeating economizer minimum position during unoccupied period with differential enthalpy changeover using W7459A C7400 with M7415 Actuator W7459A ECONOMIZER PACKAGE M7415 ACTUATOR OUTDOOR AIR ENTHALPY SENSOR C7400 RETURN AIR ENTHALPY SENSOR C7400 C7150B MIXED OR DISCHARGE AIR SENSOR MIXED AIR SENSOR eN MINIMUM POSITION ADJUSTMENT MINIMUM POSITION T6301 AMBIENT LOCKOUT CONTROL LA HOT L2 T7300 Q7300 HVAC EQUIPMENT TERMINAL STRIP POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED 24 VAC SECONDARY A
3. T7147 REMOTE COMFORT ADJUST MODULE 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE FIELD INSTALLED JUMPER 24 VAC ONLY A A 4386 25 63 4038 7 T7200 17300 Q7300 WIRING DIAGRAMS Fig 28 T7300 Q7300A B E used with single transformer 1 stage heat 2 stage cool system T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER SYSTEM SWITCH A e HEAT T7147 e OFF REMOTE COMFORT COOL ADJUST MODULE AUTO 5 ECONOMIZER a a2 SWITCH A t e ON AUXILIARY AUTO RELAY D CONTACTS A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A FIELD INSTALLED JUMPER A 24 VAC ONLY MODEL FAN SYSTEM NUMBER SWITCH SWITCH Q7300A NO NO M4387 Q7300B YES YES Q7300E YES NO 63 4038 7 26 7200 7300 7300 WIRING DIAGRAMS Fig 29 T7300 Q7300A B used with single transformer 2 stage heat 1 stage cool system T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER SYSTEM SWITCH N HEAT T7147 REMOTE COMFORT t COOL ADJUST MODULE 7 AUTO 5 ECONOMIZER FAN SWITCH A ON AUXILIARY AUTO RELAY o CONTACTS A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT
4. 63 4038 7 20 T7200 T7300 Q7300 CROSS REFERENCE TABLE 10 THERMOSTAT AND SUBBASE CROSS REFERENCE Continued Model Fig Trade Number No Description Replacement Remarks D1053 Tradeline 1 stage heat pump Q7300D1053 D1061 Tradeline 2 stage heat pump Q7300D1061 D1079 41 Tradeline Used with Premier White T7300 Q7300D1079 Light gray color 2 stage heat pump D1087 39 42 Tradeline Used with Premier White T7300 Q7300D1087 Light gray color stage heat pump Q7300E Conventional equipment System none Fan none E1001 28 29 Tradeline 2 heat and 2 cool Q7300E1001 30 E1019 28 29 Tradeline Used with Premier White T7300 Q7300E1019 Light gray color 30 2 heat and 2 cool Q7300F Heat pump systems System none Fan none F1009 Tradeline 1 stage heat pump Q7300F1009 F1017 Tradeline 2 stage heat pump Q7300F1017 F1025 44 Tradeline Used with Premier White T7300 Q7300F1025 Light gray color stage heat pump F1033 44 Tradeline Used with Premier White T7300 Q7300F1033 Light gray color 2 stage heat pump F1041 43 Carrier part no HH93AX006 Used in Y7300A1018 Q7300F1009 Q7300F1025 Light gray color Q7300G Conventional equipment System Heat Off Cool Auto Fan none G1007 31 32 Tradeline 1 heat and 3 cool Q7300G1007 Brown color 33 34 G1015 31 32 Tradeline Used with Premier White T7300 Q7300G1015 Light gray color 33 34 1 heat and 3 cool Q7300L Co
5. SI 6 Si T7200 17300 Q7300 INSTALLATION 2 Drill four 3 16 in 4 8 mm holes and gently tap anchors into the holes until flush with the wall 3 Pull wires through the cable opening See Fig 11 A CONFIGURATION OF ILLUSTRATED SWITCH IS 1 ON 2 OFF 3 OFF 4 5 Fig 11 Installing subbase on outlet box or on wall SHEET SCREWS MOUNTING TO WALL BOARD M4401 7 M4410 MACHINE SCREWS MOUNTING TO HORIZONTAL 2 X 4 JUNCTION BOX 63 4038 7 T7200 T7300 Q7300 INSTALLATION 4 Secure the subbase or wallplate with the screws pro vided Do not fully tighten the screws 5 Level the subbase or wallplate for appearance only Leveling is not required for operation Securely tighten the Screws WIRE SUBBASE OR WALLPLATE IMPORTANT Most equipment manufacturers size system transformers for the equipment installed at the fac tory Before connection be sure that the system trans former can supply the T7200 OR 17300 and Q7300 with adequate power 6 VA If less than 6 VA is available install a separate 24 Vac transformer A N CAUTION Disconnect power supply before beginning instal lation to prevent electrical shock or equipment damage wiring must comply with local electrical codes and ordinances IMPORTANT Use 16 gauge s
6. 28 29 Trane part no BAS 0446 B1040 28 29 Carrier part no HH93AAX004 B1057 28 29 Snyder General part no 1520510 Used in Y7300B 1016 and Y7300B 10224 B1065 28 Snyder General part 490249B 04 Continued A See subbase for figure number 19 63 4038 7 T7200 T7300 Q7300 CROSS REFERENCE TABLE 10 THERMOSTAT AND SUBBASE CROSS REFERENCE Continued Model Fig Trade Number No Description Replacement Remarks B1073 28 29 Tradeline 2 heat and 2 cool Q7300B1073 Brown color 30 32 35 36 B1081 28 29 Tradeline Used with Premier White T7300 Q7300B1081 Light gray color 30 32 2 heat and 2 cool 35 36 Q7300C Heat pump systems System Em Ht Heat Off Cool Auto Fan Auto On C1022 40 Lennox part no 81G6901 1030 40 York part 025 27508 Used Y7300C1006 Wa d 1048 38 42 Trane part no BAS 0447 1055 40 Trane part no BAS 0448 E C1071 40 Oboe Brown color O C1089 Tradeline 2 stage heat pump Q7300C1089 C1097 38 42 Tradeline Used with Premier White T7300 Q7300C1097 Light gray color stage heat pump C1105 40 Tradeline Used with Premier White T7300 Q7300C1105 Light gray color 2 stage heat pump Heat pump system System Em Ht Heat Off Cool Auto Fan Auto On D1004 41 Carrier part no HH93AX002 ME D1020 41 York part no 025 27724 000 Used in Y7300D1004 ln D1046 41 Lennox part no 13H7601 a Continued
7. 875 LOW AMBIENT COMPRESSOR LOCKOUT MINIMUM POSITION POTENTIOMETER VIOLET 5 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED BP K 24 VAC SECONDARY A MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE ENTHALPY CONTROL MAKES TERMINALS 2 1 ON ENTHALPY RISE AND 2 3 ON ENTHALPY FALL Li L2 RELAY REQUIRED R8222 OR SIMILAR HOT IMPORTANT MIXED AIR SENSOR MUST BE LOCATED DOWNSTREAM OF THE EVAPORATOR COIL IN THE DISCHARGE AIR DUCT TO PROVIDE ECONOMIZER LOW LIMIT FUNCTION FIELD INSTALLED JUMPER ECONOMIZER MOTOR SPRING RETURNS CLOSED ANYTIME FAN IS NOT RUNNING 24 VAC ONLY A3 TERMINAL AVAILABLE ON Q7300A B D E AND G MODELS ONLY M4409 P gt PPP P 63 4038 7 32 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 35 T7300 07300A B with W859D economizer package in 2 stage heat 2 stage cool system defeating economizer minimum position during unoccupied period T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUPIMENT SYSTEM 1 TERMINAL STRIP TRANSFORMER L1 L R HOT E MEN L2 D A O 1 C2 1 IH 1 1 1 8 FT IQ C 1 1 1 I H2 i e x Hi Il w FAN i O IH 1 1 1 MIXED AIR TEMPERATURE 1 MODUTROL MOTOR CONTROLLER AUXILIARY BLUE RELAY CONTACTS 1 1 OUTDOOR AIR CHANGEOVER SWITCH T875 LOW AMBIENT COMPRESSOR LOCKOUT
8. B D E AND G MODELS ONLY M4383 63 4038 7 T7200 T7300 Q7300 CROSS REFERENCE Cross Reference Refer to Table 10 for thermostat and subbase cross referencing information TABLE 10 THERMOSTAT AND SUBBASE CROSS REFERENCE Model Fig Trade EATA No Description Replacement Remarks T7200A 7 day programmable thermostat for commercial conventional systems 7 day programmable thermostat for commercial water source heat pump systems T7300A 7 day programmable thermostat for commercial conventional systems Y7300C1006 and Y7300D1004 1021 LN Lennox part no 81G5901 3 Qh Freenet ecru Trane part no THT 0608 Micrometl part no 901 114 Used in Y7300A1000 and Y7300C 11014 International face plate 1062 Carrier part HH07AX005 Used in Y7300A1018 RE 1070 International face plate T7300A 1005 T7300A1104 Premier White color A1088 Spanish face plate T7300A 1005 T7300A1104 Premier White color 1104 T7300A1104 Premier White color T7300B Fully configurable programmable thermostat with 3 HOUR OVERRIDE key on cover See figure 2 for view of door B1003 T7300B 1003 B1011 A Climate Control part no 490249B 05 T7300B1003 T7300B1052 Premier White color B1029 McQuay part 490249 06 Fries rome woo Arcoaire part no 1506746 Used in Y7300B 1024 B1045 Comfort Maker part no 1505746 Used in ES Y7300B1016 See subbase for figure numb
9. CONTROL WIRING CHECK FOR LATCHED FAN CONTACTOR RELAY OR PLENUM SWITCH IF FAN STOPS RUNNING PRESS CONT UNOC KEY CHECK THAT ROOM TEMPERATURE IS BETWEEN UNOC HEATING AND COOLING SETPOINTS FAN DOES NOT STOP WAIT FIVE MINUTES IF FAN KEEPS RUNNING REPLACE THERMOSTAT IF FAN STOPS RUNNING THERMOSTAT AND HVAC SYSTEM ARE OK M4416 45 63 4038 7 T7200 T7300 Q7300 TROUBLESHOOTING Fig 48 Troubleshooting chart to quickly isolate a HVAC problem SYMPTON POSSIBLE CAUSE ACTION HVAC WILL NOT NO ac VOLTAGE TO THERMOSTAT CHECK POWER TO FURNACE OR AIR CONDITIONER OPERATE ON OFF SWITCH FUSE OR CIRCUIT BREAKER LOOSE 24 VAC CONNECTION AT THERMOSTAT AT FURNACE AIR CONDITIONER INCORRECT WIRING CHECK WIRING DIAGRAM CHECK VOLTAGE AT SUBBASE 20 TO 30 VOLTS BETWEEN PINS 1 AND 6 ON Q7300 9 PIN CONNECTOR SEE FIG 34 REPLACE Q7300 IF NO VAC REPLACE THERMOSTAT IF VAC PRESENT HEATING SYSTEM WILL NOT CHECK HEATING SYSTEM TURN ON WAIT MINIMUM OFF TIME 2 MIN OR 4 MIN FOR HEAT PUMP JUMPER RH TO W1 R TO Y1 IF HEAT PUMP AT THERMOSTAT OR EQUIPMENT TERMINAL STRIP NO HEAT THERMOSTAT OK CHECK HEATING SYSTEM HEAT COMES ON HEATING SYSTEM CHECK THERMOSTAT THERMOSTAT CHECKOUT SET SYSTEM SWITCH TO HEAT OR AUTO SPACE TEMPERATURE IS LOWER THAN HEAT SETPOINT IF NOT RAISE HEAT SETPOINT TO 5 F ABOVE SPACE TEMPER TURE HEAT COMES ON THERMOSTAT AN
10. a wallplate The T7300 mounts on the Q7300 Subbase The Q7300 and wallplate mount horizontally on a wall or outlet box with two no 6 x 32 screws included T7200 17300 Q7300 SPECIFICATIONS Fig 1 Thermostat and subbase dimensions in in mm 1 3 4 41 8 204 J A T7300 Q7300 ONLY 04 Fig 2 T7300B door Honeywell M4421 Fig 3 T7300C door OGGUPIED Honeywell DA UNOCCUPIED M4422 ACCESSORIES 229997BU T7300B Conversion Kit See Fig 2 229997B Y T7300A Conversion Kit See cover photo 229997CE T7300C Conversion Kit See Fig 3 231054AA White Door Assembly for T7300C See Fig 3 231055AA White Door Assembly for T7300B See Fig 2 231056AA White Door Assembly for T7300A See cover photo 4074EEP Hardware for door and hinge pin assembly 63 4038 7 T7200 17300 Q7300 SPECIFICATIONS RECYCLING INSTALLATION 4074EFS Bag Assembly two sheet metal screws and two machine screws 4074 Bag Assembly Allen wrench and four Allen head screws 4074ENE Hinge Pin Assembly C7400 Enthalpy Sensor M7415 Damper Actuator T675A Temperature Control T7022A 1010 Remote Temperature Sensor T7047C1025 Remote Temperature Sensor T7047G1000 Remote Temperature Sensor If this control is replacing a control that contains mer in a sealed tube do not place your old control in th
11. a fully configurable programmable commer conditions are changed cial thermostat with limited access cover for easy pro gramming Cover includes Set Heat Set Cool Warmer T7200 AND T7300 THERMOSTATS Cooler and Occupied Unoccupied keys Use with Q7300 T7200A is an autochangeover programmable commer Subbase See Fig 3 cial thermostat to be used with a single stage conventional heat cool system Q7300 SUBBASE T7200B is an autochangeover programmable commercial Q7300 Subbases provide features listed in Table 1 thermostat to be used witha single stage heat pump system TABLE 1 Q7300 SUBBASE FEATURES Fan System Switch Application Selectable Output Q7300A26 None Conventional 1 heat 1 cool 1 heat 2 cool Q7300B Heat Off Cool Auto Auto On 2 heat 1 cool 2 heat 2 cool Q7300C Em Ht Heat Off 1 stage heat pump compressor with 1 heat 1 cool 2 heat 1 cool Cool Auto auxiliary heat 2 stage heat pump compressor with 1 heat 1 cool 2 heat 1 cool auxiliary heat 3 heat 1 cool Q7300D None 1 stage heat pump compressor with 1 heat 1 cool 2 heat 1 cool auxiliary heat 2 stage heat pump compressor with 1 heat 1 cool 2 heat 1 cool auxiliary heat 3 heat 1 cool Q7300E heat 1 cool 2 heat 2 cool Q7300F None Aux Ht 1 stage heat pump compressor with 1 heat 1 cool 2 heat 1 cool auxiliary heat 2 stage heat pump compressor with 1 heat 1 cool 2 heat 1 cool auxiliary heat 3 heat 1 cool Q7300G Heat Off Cool Auto None Conventio
12. plus integral P D control The thermostat sensor located on the thermostat or remote senses the current space temperature The propor tional error is calculated by comparing the sensed tempera ture to the programmed setpoint The deviation from the setpoint is the proportional error The thermostat also determines integral error which is a deviation based on the length of error time The sum of the two errors is the P I error The cycle rate used to reach and maintain the setpoint temperature is computed using the P I The addition of the integral error is what differen tiates the thermostat from many other electronic and elec tromechanical thermostats See Fig 21 15 Fig 21 Proportional temperature control versus P temperature control THERMOSTAT COOL SETPOINT PROPORTIONAL COOL CONTROL POINT P I CONTROL POINT PROPORTIONAL HEAT CONTROL POINT P I CONTROL POINT P TEMPERATURE THERMOSTAT HEAT SETPOINT HEATING COOLING 1 u 100 50 0 50 PERCENT LOAD 100 M4414 While the thermostat is designed to eliminate droop allowing droop can be desirable in applications where building visitors are dressed for the weather and their stays are brief Examples of these applications include fast food restaurants and convenience stores The droopless feature of the thermostat can be overridden by placing the droop droopless select switch located on the subbase in the OFF position This rem
13. 300 PROGRAM THE THERMOSTAT Program the Thermostat OVERVIEW The keyboard is located behind the thermostat flip up cover See Fig 18 There are 16 keys to set review and modify programmed times and temperatures The liquid crystal display LCD shows day time or temperature and which programming period is operating The thermostat can be set for two occupied and two unoccupied time and temperatures for each day of the week 28 independent settings The two override keys provide quick temporary programming changes for increased occu pant comfort IMPORTANT 70 program the thermostat 24 Vac is re quired turn on system power and the keyboard lock out switch see Fig 27 must be in the ON KEYBD position Fig 18 Thermostat programming keys and LCD display VES 1 32 77 CONT UNOC g AN Honeywell 3 HR OCCUPIED SET START TIME SELECT OCCUPIED START TIME SET TEMPERATURE DATA CHANGE OVERRIDE OCCUPIED OCCUPIED HEAT OUR COOL DISPLAY OCCUPIED COM CONT UNOC UNOC UNOC HEAT COC OO O UNOC CLEAR COPY STARTTIME STARTTIME _ C3 CC M4384 NOTE The programming times are in intervals of ten minutes i e 8 00 8 10 8 20 1 Press the SELECT DAY key The display shows the abbreviation for a day 2 Press and hold the or key until the desired day appears 3 Pressthe OCCUPIED START TIME key The pro gram indicator will point to OCCUPIED 4 Press and hold the
14. 4 or key until the desired start time appears NOTE Anytime a start time is not required press the CLEAR START TIME key 5 Press the UNOC START TIME key The program indicator will point to UNOCCUPIED 6 Press and hold the or key until the desired start time appears 7 To program a second occupied start time for the selected day repeat Step 3 until four dashes are dis played or the second start time if previously programmed is displayed Then repeat Step 4 8 To program a second unoccupied start time for the selected day repeat Step 5 until four dashes are dis playedor the second start time if previously programmed is displayed Then repeat Step 6 9 Repeat Steps 1 through 8 foreach remaining day of the week or refer to the following section COPY A DAY COPY A DAY 1 Press the SELECT DAY key The display shows the abbreviation for a day 2 Press and hold the or key until the day to be copied from appears SET CURRENT TIME DAY I 3 Press the COPY key 1 Set the current time by pressing and releasing the 4 Press and hold the or key until the day to be copied CLOCK key once 2 Press the or key until the current time appears on the LCD 3 Set the current day by pressing and releasing the DAY key once 4 Press the or key until the current day appears on the LCD NOTE Su Sunday Mo Monday Tu Tuesday We Wednesday Th Thursday Fr Friday Sa Saturday SET PROGRAM TIM
15. 4038 7 10 SET THERMOSTAT MINI JUMPER NOTE This operation must be done prior to installing the batteries If batteries are installed prior to this operation remove battery for 15 minutes and begin The T7300 is factory set for conventional system con trol using the Q7300A B E G If using with a heat pump and Q7300C D F locate the mini jumper on the back of the T7300 See Fig 14 Pull the mini jumper off the two CONV pins and move to the two HEAT PUMP pins This changes the thermostat to the heat pump algorithm If you wish to change the control of the thermostat because a new subbase has been purchased remove battery for 15 minutes change mini jumper position and re install battery MOUNT THERMOSTAT AN CAUTION Always disconnect power supply and remove bat tery from the T7300 before connecting the ribbon cables to prevent electrical shock and equipment damage Use the following procedure to connect the T7300 rib bon cables to the Q7300 1 Check that the 24 Vac power supply is disconnected from the Q7300 2 Check that the 9 Vdc battery is not installed in the T7300 IMPORTANT First be sure to connect the 12 pin ribbon cable to the Q7300 3 Connect the 12 pin larger ribbon cable to the Q7300 See Fig 15 4 Connect the 9 pin smaller ribbon cable to the Q7300 5 If using a 9 Vdc battery go to the Install Battery Backup section for installation instructions Fig 15 Connecting the pin ribbon c
16. AND SUBBASE A FIELD INSTALLED JUMPER A 24 VAC ONLY A MODEL FAN SYSTEM NUMBER SWITCH SWITCH Q7300A NO NO M4388 Q7300B YES YES Q7300E YES NO 27 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 30 T7300 Q7300A B E used with single transformer 2 stage heat 2 stage cool system without econo mizer T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER SYSTEM SWITCH A HEAT e T7147 OFF REMOTE COMFORT AUTO ADJUST MODULE COOL 5 ECONOMIZER FAN SWITCH A ON AUXILIARY AUTO RELAY e CONTACTS A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A FIELD INSTALLED JUMPER A 24 VAC ONLY A MODEL FAN SYSTEM NUMBER SWITCH SWITCH M4389 Q7300A NO NO Q7300B YES YES Q7300E YES NO 63 4038 7 28 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 31 T7300 Q7300G with single transformer 1 stage heat 3 stage cool system T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT RH TERMINAL STRIP SYSTEM TRANSFORMER L1 SYSTEM SWITCH HOT L2 T7147 A C OFF REMOTE COMFORT AUTO ADJUST MODULE COOL 5 ECONOMIZER AUXILIARY RELAY CONTACTS A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A FIELD INSTALLED JUMPER A 24 VAC ONLY M4390 29 63 4038 7 7200 7300 7300 WIRING DIA
17. AT DIP SWITCH SETTINGS Setting SET THERMOSTAT DIP SWITCHES The thermostat DIP switches provide the thermostat with an interface to the single zone HVAC system See Table 7 for DIP switch settings The thermostat DIP switches are located on the back of the thermostat See Fig 13 Set the DIP switches for the desired thermostat features and the system being controlled IMPORTANT The thermostat configuration must match the application or the control logic will not function properly l 2 12 hour clock display 24 hour clock display 3 ON Intermittent fan operation in occupied period OFF Continuous fan operation in occupied period 4 Nonfunctional switch OFF Keyboard disabled but can be used to review program perform overrides and make clock changes Keyboard is used for programming a Factory setting b Q7300B C D E L fan switch will override this switch setting Q7300A F G no override is available 63 4038 7 T7200 T7300 Q7300 INSTALLATION Fig 13 Setting thermostat DIP switches T7300 ONLY 2 Q a HEAT PUMP 2 p 12 HR TIME INT FAN M4085A Fig 14 Setting thermostat mini jumper for conventional or heat pump system gt E N INT FAN ON KEYBD A ONLY PUT MINI JUMPER IN THIS POSITION WHEN USING Q7300C D OR F SUBBASES A ONLY PUT MINI JUMPER IN THIS POSITION WHEN USING Q7300A B E OR G SUBBASES M4086A 63
18. CHECK WIRING DIAGRAM CHECK VOLTAGE AT SUBBASE 20 TO 30 VOLTS BETWEEN PINS 1 AND 6 ON Q7300 9 PIN CONNECTOR SEE FIG 34 REPLACE Q7300 IF NO VAC REPLACE THERMOSTAT IF VAC PRESENT ALL SEGMENTS OF THERMOSTAT IS IN TEST MODE PRESS CLOCK AND DAY KEYS AT THE SAME TIME REPLACE LCD ARE DISPLAYED THERMOSTAT IF REPEATED ATTEMPTS FAIL BATT DISPLAYED ON THERMOSTAT HAS DETECTED LOW LOWER RIGHT LCD BATTERY VOLTAGE THERMOSTAT HAS NO PROGRAM HECK BATTERY CONNECTIONS EPLACE BATTERY o HECK BATTERY 7 5 VDC HECK BATTERY CONNECTIONS EPROGRAM THERMOSTAT LCD DISPLAYS HECK OPERATION IF BATTERY OK AND THERMOSTAT LOOSES ROGRAM REPLACE THERMOSTAT LCD HAS ONLY FAULTY THERMOSTAT REPLACE T7300 PARTIAL DISPLAY FAN DOES NOT RUN SET SWITCH 4 TO ON WHEN THERMOSTAT IS NOT REQUIRED TO TURN ON FAN IN HEATING SET SWITCH 4 TO OFF WHEN THERMOSTAT IS REQUIRED TO TURN ON THE FAN IN HEATING INOPERATIVE THERMOSTAT CHECK FAN OPERATION SET FAN SWITCH TO ON SYSTEM SWITCH TO AUTO PRESS 3 HOUR OCCUPIED KEY WAIT AS LONG AS FIVE MINUTES AND FAN SHOULD START FAN STILL DOES NOT RUN USE OHM METER TO CHECK FOR CONTINUITY BETWEEN RC AND G ON THE SUBBASE IF ZERO PROBLEM IS IN HVAC UNIT CONTROL SYSTEM CHECK FAN CONTROL RELAY CIRCUITS IF NOT ZERO REPLACE THERMOSTAT HVAC SYSTEM OR THERMOSTAT REMOVE WIRE FROM G TERMINAL PROBLEM IF FAN KEEPS RUNNING CHECK HVAC
19. D HEATING SYSTEM OK NO HEAT REPLACE THERMOSTAT HEAT ON THERMOSTAT AND HEATING SYSTEM OK NO HEAT REPLACE 07300 HEATING SYSTEM WILL NOT CHECK HEATING SYSTEM TURN OFF WAIT MINIMUM ON TIME 2 MIN OR 4 MIN FOR HEAT PUMP REMOVE RH R IF HEAT PUMP WIRE FROM TERMINAL HEAT STAYS ON THERMOSTAT OK CHECK HEATING SYSTEM HEAT STOPS HEATING SYSTEM OK CHECK THERMOSTAT THERMOSTAT CHECKOUT SET SYSTEM SWITCH TO HEAT OR AUTO SPACE TEMPERATURE IS HIGHER THAN HEAT SETPOINT IF NOT LOWER HEAT SETPOINT TO 5 F BELOW SPACE TEMPER TURE HEAT TURNS OFF THERMOSTAT AND HEATING SYSTEM OK HEAT STILL ON REPLACE THERMOSTAT HEAT TURNS OFF THERMOSTAT AND HEATING SYSTEM OK HEAT ON REPLACE 07300 COOLING SYSTEM WILL NOT CHECK COOLING SYSTEM TURN ON WAIT MINIMUM 4 MIN OFF TIME JUMPER RC R IF HEAT PUMP TO Y1 AT THERMOSTAT OR EQUIPMENT TERMINAL STRIP COOL OFF THERMOSTAT OK CHECK COOLING SYSTEM COOL ON COOLING SYSTEM OK CHECK THERMOSTAT THERMOSTAT CHECKOUT SET SYSTEM SWITCH TO COOL OR AUTO SPACE TEMPERATURE IS HIGHER THAN COOL SETPOINT IF NOT LOWER COOL SETPOINT TO 5 F BELOW SPACE TEMPER TURE COOL COMES ON THERMOSTAT AND COOLING SYSTEM OK NO COOL REPLACE THERMOSTAT COOL ON THERMOSTAT AND COOLING SYSTEM OK COOL TURNS OFF REPLACE 07300 COOLING SYSTEM WILL NOT CHECK COOLING SYSTEM TURN OFF WAIT MINIMUM 2 MIN ON TIME REMOVE RC R IF HEAT PUM
20. D JUMPER M4394 35 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 38 T7300 Q7300C with 2 stage heat 1 stage cool heat pump system using or B terminal for reversing valve T7300 Q7300 HEAT PUMP SUBBASE EXISTING HVAC EQUIPMENT THERMOSTAT SYSTEM HVAC EQUIPMENT O TERMINAL STRIP TRANSFORMER L1 AH HOT L2 O COHT EMHT cj LED RED GOGL OO AN a sue ner IF NO C TERMINAL SYSTEM ME VALVE EM HT F 4 HEAT Q Q OFF sr y EM HT oW 7 AUTO 4 H1 C1 o O AUX HT HEAT FAN FAN SWITCH ON T7147 C AUTO COMFORT ADJUST MODULE ECONOMIZER AUXILIARY RELAY CONTACT A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A WIRE O TO REVERSING VALVE FOR COOLING CHANGEOVER WIRE B TO REVERSING VALVE FOR HEATING CHANGEOVER A 24 VAC ONLY M4399 63 4038 7 36 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 39 T7300 Q7300D with 2 stage heat 1 stage cool heat pump system 17300 THERMOSTAT Q7300 HEAT PUMP SUBBASE EXISTING HVAC EQUIPMENT O HVAC EQUIPMENT O R TERMINAL STRIP SYSTEM TRANSFORMER SYSTEM EM HT CH AUX HT C SWITCH LED RED LED RED c EM HT H4 HEAT Q COOL _ AUXILIARY 1 AUX HT AUTO 4 Ho oy Io E FAN vi COOL 1 C O CL H1 C1 C O HT 9 L1 HOT L2
21. ES IMPORTANT The thermostat will remain in occupied mode from the point of initial programming until it encounters the first unoccupied start time To avoid the unnecessary occupied period following initial pro gramming set a 12 00 AM unoccupied start time on the thermostat when programmed 63 4038 7 12 to appears NOTE The day to be copied from will remain on the display 5 Press the COPY key a second time to perform the copy 6 Repeat Steps 3 to 5 to copy to another day SET PROGRAM TEMPERATURE SETPOINTS NOTE The setpoint temperature range is 45 F unoccupied heat to 95 F unoccupied cool The occupied heat setpoint must be at least 2 F less than the occupied cool setpoint 1 Press the SET TEMPERATURE key OCCUPIED HEAT OCCUPIED COOL UNOC HEAT or UNOC COOL The program indicator will point to OCCUPIED or UNOCCUPIED and the LCD will indicate HEAT or COOL 2 Press and hold or key until the desired tempera ture appears 3 Repeat Steps 1 and 2 until all four temperatures are set SET OPERATING DISPLAY The LCD can show time or temperature To change the current display press the DISPLAY key until the desired operating display appears CLEAR START TIME 1 Press the SELECT DAY key 2 Press and hold the or key until the desired day appears 3 Press and hold the OCCUPIED START TIME or the UNOC START TIME key until the time to clear appears 4 Press and hold the CLEAR START TIME ke
22. FAN SWITCH A T7147 REMOTE COMFORT ADJUST up j 3 I 7 AUTO MODULE ECONOMIZER AUXILIARY RELAY CONTACTS 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE REVERSING VALVE MAY BE SWITCHED FROM Y1 TO W1 OR FROM AN INTERNAL EQUIPMENT CONTROLLER DEPENDING ON MANUFACTURER AND SYSTEM 24 VAC ONLY M48998 A 37 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 40 T7300 Q7300C with 2 stage heat 2 stage cool heat pump system using or B terminal for reversing valve 17300 THERMOSTAT Q7300 HEAT PUMP SUBBASE EXISTING HVAC EQUIPMENT SYSTEM HVAC EQUIPMENT O 4 TERMINAL STRIP ea Il HOT 2 COHT EM HT Ql AUX HT LE D RED LED RED Lo EM HT F 4 HEAT e E OFF a 5 COOL 47 AUTO A H1 C1 6 FO C2 AUX HT FO FAN O L1 HOT L2 FAN SWITCH T7147 REMOTE COMFORT AUTO ADJUST MODULE ECONOMIZER AUXILIARY RELAY CONTACT A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A WIRE O TO REVERSING VALVE FOR COOLING CHANGEOVER WIRE B TO REVERSING VALVE FOR HEATING CHANGEOVER A 24 VAC ONLY M4400 63 4038 7 38 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 41 T7300 Q7300D with 3 stage heat 2 stage cool heat pump system 17300 THERMOSTAT Q7300 HEAT PUMP SUBBASE EXISTING HVAC EQ
23. GRAMS Fig 32 T7300 Q7300A B G defeating economizer minimum position during unoccupied period 2 stage cool system with single enthalpy changeover using W7459A C7400 with an M7415 actuator W7459A ECONOMIZER PACKAGE M7415 ACTUATOR ENTHALPY SENSOR C7400 A 620 OHM RESISTOR 7150 MIXED OR DISCHARGE AIR SENSOR MIXED AIR SENSOR MINIMUM POSITION ADJUSTMENT MINIMUM POSITION T6301 AMBIENT LOCKOUT CONTROL L1 HOT amp T7300 Q7300 HVAC EQUIPMENT TERMINAL STRIP POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED 24 VAC SECONDARY ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER ACTUATOR AND T7300 Q7300 1S AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY 24 VAC INPUT RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A D FACTORY INSTALLED 620 OHM 1 WATT 5 RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED TO SR AND FOR DIFFERENTIAL ENTHALPY P gt PP FIELD INSTALLED JUMPER M4392 63 4038 7 30 7200 7300 7300 WIRING DIAGRAMS Fig 33 T7300 Q7300G defeating economizer minimum position during unoccupied period in 3 stage cool system with single enthalpy changeover using W7459A C7400 with M7415 Actuator gt EEE W7459A ECONOMIZER PACKAGE ENTHALPY SENSOR C7400 A 620 OHM RESISTO
24. Honeywell T7200 T7300 and Q7300 Programmable Commercial Thermostats and Subbases The T7200 T7300 Thermostats 07300 Sub bases control commerical single zone heating ven tilating and air conditioning HVAC equipment lll One model can be used for single stage and multi stage applications Bi 7 day programming two occupied unoccupied periods per day Bi Individual temperature setpoints for Occupied heat and cool Unoccupied heat and cool ll Proportional plus integral control eliminates temp erature fluctuations and thermostat tampering Bi Intelligent Recovery automatically optimizes start time depending on building load Bi Intelligent Fan energizes fan on call for heating or cooling only Fan can be configured to run cont inuously in occupied mode M Automatic heat cool changeover BN Universal Versaguard Thermostat Guard avail able for T7200 and T7300 Q7300 M Locking setpoints and schedules eliminate tamp ering use keyboard security lll One thermostat can be used for heat pump or con ventional control lll Optional remote sensors ll Configurable to vary fan and reversing valve operation J A Rev 12 95 OHoneywell Inc 1995 M Use with Q7300 to interface with C7400 W7459 Economizer System for total integration of rooftop control ll Convenient overrides allow temporary changes E Battery backup saves program and maintains clock time durin
25. ILABLE ON Q7300F1017 AND Q7300F1033 ONLY 63 4038 7 42 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 45 Q7300L for 2 stage heating with three position ML984A actuator V50B valve and 1 stage cooling 17300 THERMOSTAT Q7300L EXISTING HVAC EQUIPMENT L1 L2 HOT A A O Q G ES COOLING d RELAY g 2K RELAY 1K1 COOL 9 LOW SPEED LED ae FAN RELAY Gr FAN 2k2 A 1K RELAY 9 v9 ML984A VALVE HIGH SPEED ACTUATOR H SK HEAT LED 3K RELAY 180 2 2W O DAMPER 5K1 CONTROL RELAY FAN PUMP 3K2 INTERLOCK RELAY AUTO D SYSTEM SWITCHING MICROPROCESSOR CONTROL POWER SUPPLY SUBBASE RELAY MMUNICATION COMMUNICATION CONTROL AND ne LINES COMMUNICATION INCLUDES 4K T7147A AND 5K RELAYS REMOTE SENSOR AND OVERRIDE MODULE lt RS1 lt M ps2 A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A INDEPENDENT FAN TRANSFORMER OPTIONAL IF SINGLE TRANSFORMER IS USED JUMPER FC TO R A FOR SINGLE SPEED FAN JUMPER GL AND GH A 180 2W RESISTOR MUST BE INSTALLED AS SHOWN A REFER TO T7147 INSTRUCTIONS FOR APPROPRIATE CA TERMINAL CONNECTIONS T7047 HAS T T TERMINALS ONLY T 43 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 46 Q7300L for single stage conventional heating systems with single stage cooling T7300 THERMOSTAT Q7300L EXISTING HVAC EQUIPMENT Li 12
26. ITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE ENTHALPY CONTROL MAKES TERMINALS 2 1 ON ENTHALPY RISE AND 2 3 ON ENTHALPY FALL RELAY REQUIRED R8222 OR SIMILAR ECONOMIZER MOTOR SPRING RETURNS CLOSED ANYTIME FAN IS NOT RUNNING 24 VAC ONLY A3 TERMINAL AVAILABLE ON Q7300D MODEL ONLY M4412 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 43 T7300 Q7300F for 1 stage heat pump T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER ua oe CHANGEOVER 17147 REMOTE COMFORT ADJUST MODULE ECONOMIZER AUXILIARY RELAY CONTACT A 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A FIELD INSTALLED JUMPER A 24 VAC ONLY MSS 41 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 44 T7300 Q7300F for 1 stage heat 1 stage cool and 2 stage heat 1 stage cool heat pumps T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER L1 HOT L2 A aux ur Ga A LED GREEN c2 COMP 1 E 99 9 COMP 2 COOL CHANGEOVER ra gt c gt m gt 3 E HOT L2 T7147 REMOTE COMFORT ADJUST MODULE AUXILIARY RELAY CONTACT 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE FIELD INSTALLED JUMPER 24 VAC ONLY M4420 PP P AVA
27. LPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A D FACTORY INSTALLED 620 OHM 1 WATT 5 RESISTOR SHOULD BE REMOVED ONLY IF A C7400 ENTHALPY SENSOR IS ADDED TO SR AND FOR DIFFERENTIAL ENTHALPY P PP EE FIELD INSTALLED JUMPER d 23 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 25 T7200A with electric heat system T7200 THERMOSTAT WALLPLATE EXISTING HVAC EQUIPMENT SYSTEM TRANSFORMER ELECTRIC HEAT FAN RELAY 1K POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE FIELD INSTALLED JUMPER P P P RELAY REQUIRED R8222 OR SIMILAR M4406 Fig 26 T7200B with 1 stage heat pump system T7200 THERMOSTAT WALLPLATE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER L1 HOT 12 O 1 Dh u aqa E IF NO C TERMINAL ie o H1 C1 FAN 9 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE M4396 63 4038 7 24 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 27 T7300 Q7300A with single transformer 1 stage heat 1 stage cool system T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER e d IF NO C TERMINAL FAN
28. M UNOCCUPIED Intelligent Recovery is a Honeywell trademark for the way the thermostat controls the heating and cooling equipment during recovery from unoccupied to occupied setting During recovery the control point ramps up at the rate of 5 F 3 C per hour rather than jumping from the energy savings setting to the comfort setting all at once This provides additional energy savings When the Intelligent Recovery is used in the heating mode the control point raises 5 F 3 C per hour maximiz ing the use of the more economical first stage heat to bring the sensed temperature to the desired comfort setpoint This minimizes using the typically more expensive second stage heat 63 4038 7 16 The advantages are Comfort setting is achieved at the programmed time and maintained regardless of weather conditions oc cupants are comfortable Drafts from low temperature discharge air are mini mized during occupied periods Thethermostat automatically uses the more economi cal first stage of heat as the primary heat source during heat mode recovery avoiding the use of the expensive second stage heating Comfort and energy savings can be achieved in both heating and cooling Thethermostat reduces heat cycling extending equip ment life Heat Pump Operation The T7200 is fixed for either heat pump or conventional control applications The T7300 is configurable for either heat pump or conventional applications d
29. P WIRE FROM TERMINAL COOL ON THERMOSTAT OK CHECK COOLING SYSTEM COOL OFF COOLING SYSTEM OK CHECK THERMOSTAT THERMOSTAT CHECKOUT SET SYSTEM SWITCH TO COOL OR AUTO SPACE TEMPERATURE IS LOWER THAN COOL SETPOINT IF NOT RAISE COOL SETPOINT TO 5 F ABOVE SPACE TEMPER TURE COOL TURNS OFF THERMOSTAT AND COOLING SYSTEM OK COOL STILL ON REPLACE THERMOSTAT COOL TURNS OFF THERMOSTAT AND COOLING SYSTEM OK COOL ON REPLACE 07300 M4417 63 4038 7 46 47 63 4038 7 FOR CANADIAN EMI REGULATIONS Class B This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la Class B prescrites dans le R glement sur le brouillage radio lectrique dict par le minist re des Communications du Canada Honeywell Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc Honeywell Limited Honey well Limit e 1985 Douglas Drive North 155 Gordon Baker Road Golden Valley MN 55422 North York Ontario M2H 2C9 Printed in U S A www honeywell com building components
30. R C7150B MIXED OR DISCHARGE AIR SENSOR M7415 ACTUATOR MIXED AIR SENSOR MINIMUM POSITION T6301 AMBIENT LOCKOUT CONTROL 60 F SETPOINT _ T7300 Q7300 HVAC EQUIPMENT TERMINAL STRIP POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED 24 VAC SECONDARY ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER ACTUATOR AND T7300 Q7300 1S AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT RELAYS 1K AND 3K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A D FACTORY INSTALLED 620 OHM 1 WATT 5 RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED TO SR AND FOR DIFFERENTIAL ENTHALPY FIELD INSTALLED JUMPER 31 M4395 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 34 T7300 Q7300G with W859A Economizer package in 1 stage heat 3 stage cool system defeating economizer minimum position during unoccupied period T7300 THERMOSTAT Q7300 SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUPIMENT SYSTEM 1 TERMINAL STRIP TRANSFORMER A L1 I HOT L2 A 1 OQ ct d L i Hi 1 0 1 1 1 1 I L i O YELLOW MIXED AIR TEMPERATURE MODUTROL MOTOR CONTROLLER A AUXILIARY RELAY CONTACTS BLUE OUTDOOR AIR CHANGEOVER SWITCH
31. SSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER ACTUATOR AND T7300 Q7300 AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A D gt gt gt gt FIELD INSTALLED JUMPER M4393 63 4038 7 34 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 37 T7300 Q7300 with economizer package in 1 stage cool system defeating economizer minimum position during unoccupied period with single enthalpy changeover using W7459A C7400 with M7415 Actuator W7459A ECONOMIZER PACKAGE M7415 ACTUATOR ENTHALPY SENSOR 620 OHM A RESISTOR C7150B MIXED OR DISCHARGE lt 6 zo z 5 1 MINIMUM POSITION E ADJUSTMENT 29 2a D T6301 AMBIENT LOCKOUT CONTROL 09 5 HOT 12 T7300 Q7300 HVAC EQUIPMENT P gt PP TERMINAL STRIP POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED 24 VAC SECONDARY ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER ACTUATOR AND T7300 Q7300 1S AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A D FACTORY INSTALLED 620 OHM 1 WATT 5 RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED TO SR AND FOR DIFFERENTIAL ENTHALPY FIELD INSTALLE
32. UIPMENT HVAC EQUPIMENT O TERMINAL STRIP SYSTEM TRANSFORMER HOT SYSTEM SWITCH HEAT OFF COOL AUTO H3 e AUXILIARY ES 1 e COOL 1 COOL 2 FAN SWITCH 17147 REMOTE ON COMFORT ADJUST AUTO MODULE ECONOMIZER AUXILIARY RELAY CONTACTS 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE REVERSING VALVE MAY BE SWITCHED FROM Y1 TO W1 OR FROM AN INTERNAL EQUIPMENT CONTROLLER DEPENDING ON MANUFACTURER AND SYSTEM A A 24 ONLY M48297 39 63 4038 7 T7200 T7300 Q7300 WIRING DIAGRAMS Fig 42 T7300 Q7300C D with economizer package in 2 stage heat 1 stage cool heat pump system defeating economizer minimum position during unoccupied period T7300 THERMOSTAT Q Q Q 00 0 0 AUXILIARY RELAY CONTACTS 63 4038 7 Q7300 HEAT PUMP SUBBASE EXISTING HVAC EQUIPMENT HVAC EQUPIMENT 1 TERMINAL STRIP 5 SYSTEM SWITCH CU X E 4 EM HT P HEAT a is Po a B 8 COOL amp x AUTO o MODUTROL MOTOR 40 MIXED AIR TEMPERATURE CONTROLLER AUXILIARY HEAT 1 1 4K 4 5 1 4K2 OUTDOOR AIR CHANGEOVER SWITCH MINIMUM POSITION POTENTIOMETER VIOLET VIOLET POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VAC SECONDARY MUST BE ABLE TO CARRY ADD
33. ables to the subbase connectors 9 PIN SUBBASE CONNECTOR 12 PIN SUBBASE CONNECTOR M4403 11 T7200 T7300 Q7300 INSTALLATION INSTALL BATTERY OPTIONAL The 9 volt battery is not necessary for the operation of the thermostat but holds the program during power out ages When the power is restored the system will resume normal operation Without the battery the system will follow the default setpoints See Table 3 Use the following steps to install a battery 1 Locate the battery holder on the back of the thermo stat 2 Slide the battery up to the connector until it is firmly seated See Fig 16 NOTE Observe the polarity when snapping a 9 volt alkaline battery into the holder NOTE The plugs must be firmly seated on the connectors for the thermostat to work properly 6 Hang the top edge of the thermostat on the subbase hooks See Fig 17 7 Swing down and press on the lower edge until the thermostat snaps in place 8 Insert and tighten three Allen head screws on the bottom of the thermostat See Fig 17 Fig 16 Installing optional 9 volt battery STEP 1 CONNECT THERMOSTAT CABLES TO THE SUBBASE BATTERY FIRST THE 12 PIN THEN THE 9 PIN SNAP BATTERY INTO PLACE SLIDE BATTERY UP TO THE BATTERY CONNECTOR UNTIL CONNECTED M4408 Fig 17 Mounting thermostat on subbase A DO NOT OVERTIGHTEN SCREWS 4391 63 4038 7 T7200 T7300 Q7
34. alling thermostat or remote mounted sensor 1 5 METERS Fig 5 Two T7047G1000 Sensors providing a Fig 7 Four T7047C1025 Sensors providing a temperature averaging network for a T7300 temperature averaging network for a T7300 Q7300 Thermostat Subbase Q7300 Thermostat Subbase Fig 6 Two T7047C1025 and one T7047G1000 Sensors providing a temperature averaging network for a T7300 Q7300 Thermostat Subbase 5 63 4038 7 T7200 T7300 Q7300 INSTALLATION Fig 8 Five T7047G1000 Sensors providing a temperature averaging network for a T7300 Q7300 Thermostat Subbase Fig 9 Nine T7047C1025 Sensors providing a temperature averaging network for a T7300 Q7300 Thermostat Subbase 63 4038 7 New Installation Run cable to a hole at the selected wall location for the thermostat and pull about 3 in 76 mm of wire through the opening Color coded 18 gauge thermostat cable with at least one conductor for each wiring terminal is recom mended Good service practice recommends selecting a cable with one or two extra conductors than the immediate application requires If using remote temperature sensor s or LAN override switch module refer to the mounting instructions included with the device for wiring cable requirements Route cable away from sources of electrical noise IMPORTANT The remote sensor s or override switch wires must be in a shielded cable if bundled or placed in the same conduit with th
35. and fan switches set the switches to AUTO 1 Press the CLOCK and DAY keys at the same time This starts the test mode 2 Press the DISPLAY key See Fig 20 Fig 20 Display when starting test sequence rl ale 2001 1 IO COMM AM HEAT 3 Press the OCCUPIED HEAT key 4 Press the key to raise the setpoint 5 F 3 C above the room temperature The heating should start both stages if multistage and the fan should run may bea short delay on forced air systems NOTE It can be necessary to change the OCCUPIED COOL setpoint However be aware that OCCUPIED HEAT and OCCUPIED COOL setpoints must have a 2 F difference 5 Press the OCCUPIED HEAT key 6 Press the key to lower the setpoint 5 F 3 C below the room temperature The heating should shut off followed by the fan shutoff When the thermostat has a system switch move the switch to the HEAT position and repeat steps 3 through 6 63 4038 7 14 COOL Move switch to auto AN CAUTION Do not operate cooling if outdoor temperature is below 50 F 10 C Refer to the manufacturer recommendations NOTE When cooling setting changes thermostat will wait up to five minutes before turning on the cooling equip ment This delay is to protect the compressor 1 Press the OCCUPIED COOL key 2 Press the key to lower the setpoint 5 F 3 C below the room temperature The cooling should start both stages if multistage and the fan shou
36. ating and fan When the mini jumper is set for heat pump applications the relays control the heat pump compressor auxiliary heat and fan Because of this change in switching logic it is important to use Q7300C D or F subbases when the T7300 is set for heat pump applications and use Q7300A B E G subbases when the T7300 is set for conventional applica tions The T7200A Relay Logic is for conventional applica tions The T7300B Relay Logic is for heat pump applica tions T7200 T7300 AND CONVENTIONAL THERMOSTATS P I Control The T7200 T7300 microprocessor based control requires that the user understands temperature control and thermo stat performance A conventional electromechanical or elec tronic 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 Many factors contribute to offset including switch differential thermal lag overshoot cycle rates and system load The thermostat microprocessor simultaneously gathers compares and computes data Using this data it controls a wide variety of functions The special proprietary algo rithm program in the thermostat eliminates the factors causing offset This makes temperature control more accu rate than the conventional electromechanical or electronic thermostats The temperature control algorithm is called proportional
37. e trash Contact your local waste management authority for instructions regarding recycling and the proper disposal of WHEN INSTALLING THIS PRODUCT Read these instructions carefully Failure to follow them could damage the product or cause a hazardous con dition 2 Check the ratings given on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced service tech nician 4 Allow thermostatto warm to room temperature before operating 5 After installation is complete check out product op eration as provided in these instructions AN CAUTION Disconnect power supply before beginning instal lation to prevent electrical shock or equipment damage LOCATION Thermostat Without Remote Mounted Temperature Sensor Install the thermostat about 5 ft 1 5m above the floor in an area with good air circulation at average temperature See Fig 4 Do not mount the thermostat where it can be affected by drafts or dead spots behind doors in corners or under cabinets hot or cold air from ducts radiant heat from the sun fireplace or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall behind the thermostat 63 4038 7 T7147A1002 Remote Temperature Sensor and Over ride Module T7147A1010 Remote Temperature Sensor and Over ride Module T7147A1028 Remote Temperature Sensor and Over ride M
38. e cooling control wires Earth ground the shield at the thermostat SET Q7300 SUBBASE DIP SWITCHES NOTE Subbase dip switches are not available on the T7200 Wallplate The Q7300 Subbase provides the T7300 Thermostat with an interface to the single zone HVAC system See Table 5 for DIP switch settings The subbase DIP switches are located on the front and to the right of the wiring terminals See Fig 10 Set the DIP switches for the system being controlled TABLE 5 SUBBASE DIP SWITCH SETTINGS Switch setting stage heat tage heat tage cool tage cool roportional control allows droop Proportional plus integral P I control droopless Energizes fan on cool only Energizes fan on heat and cool Use internal sensor Use remote sensor No effect on 1 heat 1 cool Q7300A or 1 heat 3 cool Q7300G models b Factory setting No effect on heat pump systems MOUNT SUBBASE OR WALLPLATE The subbase or wallplate can be mounted on a horizon tal outlet box or directly on the wall For an outlet box installation go to step 3 1 For a wall installation hold subbase or wallplate in position and mark holes for the anchors See Fig 4 Wall anchors must be obtained locally Be careful that the wires do not fall back into the wall opening Set aside subbase or wallplate Fig 10 Setting subbase DIP switches A2 Ai W2 Y2 0009 CA2 CA4 CA5 2 Si S
39. ed in memory is used If 24 Vac is lost and no battery backup exists the default temperatures is placed into memory when the power comes back on These default values are then used for temperature control Occupied When the thermostat is operating in the occupied mode the temperature is controlled to the occupied heat or cool setpoint The normally open A1 auxiliary relay contacts are closed and the normally open contacts A3 auxiliary relay contacts are opened during the occupied modes if the subbase being used has this option The fan operates as follows No switching subbase used Operation of the fan is continuous fan always energized unless the fan op tion switch on the back of the T7300 3 is set to intermittent cycles with Y1 or W1 Switching subbase used Q7300 fan switch can be set to ON always energized or AUTO cycles with Y1 or W1 NOTE If subbase configuration switch no 4 on any Q7300 conventional subbase is set to the ON position the fan cycles on a call for cooling only switch no 4 has no effect on heat pump subbases Q7300C D F Unoccupied When the thermostat is operating in the unoccupied mode the temperature is controlled to the unoccupied heat or cool setpoint The auxiliary relay contacts is open and the fan operates as follows Switching or non switching subbase used Fan is al ways be intermittent cycles with Y1 or W1 See NOTE for OCCUPIED Conventional System RECOVERY FRO
40. epending on the subbase used Additional information is required when configured for heat pump The heat pump mini jumper located on the back of the thermostat places the thermostat into the heat pump mode Refer to the Installation section O AND B TERMINALS FOR HEATING OR COOLING CHANGEOVER The Q7300C and F controls heat pump changeover The Q7300D is only used in a heat pump application when the heat pump controls the reversing valve changeover See Table 8 for the operation of the O and B terminals on the Q7300C and F TABLE 8 OPERATION OF THE Q7300 O AND B TERMINALS SystemSwitch O B Auto Cool Emergency Heat Off When the system is calling for heat or is de energized but the last function was heat b When the system is calling for cool or is de energized but the last function was cool When the last function was heating the operation is the same as Auto Heat If the last function was cooling the operation is the same as Auto Cool RECOVERY FROM UNOCCUPIED The heating recovery ramp is 3 F per hour which differs from the 5 F per hour for conventional systems The 3 F degree difference helps the system use the economical heat pump more and the expensive auxiliary heat less The cooling ramp is 5 F the same as conventional systems FAN OPERATION When the subbase fan switch is in the ON position the fan is energized continuously in the occupied mode The AUTO position energizes the fan wi
41. er Continued 63 4038 7 18 T7200 T7300 Q7300 CROSS REFERENCE TABLE 10 THERMOSTAT AND SUBBASE CROSS REFERENCE Continued Model Fig Trade Number No Description Replacement Remarks T7300C Fully configurable programmable thermostat with limited access cover See Figure 3 for view of door C1001 T7300C1001 C1019 Tradeline Premier White T7300 T7300C1019 Premier White color aera 07300 Conventional equipment System none Fan none A1000 Tradeline 1 heat and 2 cool Q7300A1000 1018 28 29 Tradeline 2 heat and 2 cool Q7300A1018 Brown color 30 32 35 36 1034 27 32 Trane part BAS 0444 Q7300A 1000 Q7300A1075 Light gray color A1042 28 29 Trane part BAS 0445 Q7300A 1018 Q7300A1083 Light gray color Micromet part no 901 3 Used in Y7300A 1000 Q7300A 1018 Q7300A1083 Light gray color Carrier part no HH93AX005 Q7300A 1018 2 Q7300A1083 Light gray color A1075 27 32 Tradeline Used with Premier White T7300 Q7300A1075 Light gray color 1 heat and 1 cool A1083 28 29 Tradeline Used with Premier White T7300 Q7300A1083 Light gray color 30 32 2 heat and 2 cool 35 36 Q7300B Conventional equipment System Heat Off Cool Auto Fan Auto On B1008 28 29 Tradeline 2 heat and 2 cool Q7300B1008 Brown color 30 32 35 36 B1016 28 29 Lennox part no 81G6001 B1024 28 29 York part no 025 227507 Used in Y7300B1008 B1032
42. es hundreds of hours 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 An economizer is used to take advantage of the outside air The typical economizer consists of an outside air damper motor outdoor air changeover control and a minimum position potentiometer The motor controls the dampers Suitability of the outside air for cooling is determined by the outdoor air changeover control The potentiometer is used for adjusting 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 the compressor life The drawback to the economizer is that during the unoccupied 17 T7200 17300 Q7300 OPERATION period if there is no call for cooling 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 suit ability The situation can cause the heating or cooling to run more often than if suitable outdoor air is permitted to enter the building The thermostat can take advantage of an economizer by connecting the auxiliary relay contacts A1 and A2 of the subbase to control the economizer minimum position po tentiometer The contacts close during the occ
43. g power failure Bl Auxiliary contacts available for use with economizer CONTENTS Specifications 2 Ordering Information 2 Recycling Notice ss 4 Installation hier tresses 4 Temperature Averaging Networks S e Fio 5 0 aun DOD sus 5 Set Q7300 Subbase DIP Switches 6 Set Thermostat DIP Switches 9 Set Thermostat Mini Jumper 11 Program the Thermostat 12 Checkout ss 13 Test Mode rette sete 13 Operation 15 Cross Reference essere 18 Wiring Diagrams eere 22 Troubleshooting 45 63 4038 7 T7200 T7300 Q7300 SPECIFICATIONS ORDERING INFORMATION Specifications IMPORTANT The specifications given in this publication T7300A is a fully configurable programmable commer do not include normal manufacturing tolerances cial thermostat to be used with a Q7300 Subbase Therefore this unit may not exactly match the listed T7300B is a fully configurable programmable commer specifications This product is tested and calibrated cial thermostat with the 3 HOUR OVERRIDE key in the under closely controlled conditions and some minor cover to be used with a Q7300 Subbase See Fig 2 differences in performance can be expected if those T7300C is
44. ld run NOTE It can be necessary to change the OCCUPIED HEAT setpoint However be aware that the OCCUPIED HEAT and OCCUPIED COOL setpoints must have a 2 F difference 3 Press the OCCUPIED COOL key 4 Press the key to raise the setpoint 5 F 3 C above the room temperature The cooling and fan should shut off When the thermostat has a system switch move the switch to the COOL position and repeat Steps through 4 Move the system switch to the OFF position All heating or cooling should stop FAN Thermostat Fan Switch located on the back of the thermostat CON Fan operates continuously in the occupied mode INT FAN Fan operates directly with the thermo stat call for heating or cooling in the occupied mode Subbase NOTE Subbase fan switch overrides the thermostat fan switch Subbase Dip Switch No 4 ON Fan operates only with cool OFF Fan operates with heat and cool Q7300E Fan Switch ON Fan operates continuously AUTO Fan operates directly with the thermostat call for heating or cooling IMPORTANT Press the CLOCK and DAY keys at the same time to discontinue the test mode The Test Mode Indi cators will no longer show on the screen See Fig 19 T7200 T7300 Q7300 OPERATION Operation T7200 T7300 RELAY LOGIC The T7300 contains three switching relays When the mini jumper is set for conventional applications the relays control first stage cooling first stage he
45. nal 1 stage heat with 1 heat 3 cool fixed 3 stage cool Q7300L None Auto On Heat Cool 2 stage heat ML984 actuator 1 heat 1 cool 2 heat 1 cool V5013 Valve 1 stage cool Select models do not have auxiliary relay output The auxiliary relay output is used with an ecomonomizer for minimum position control based on programmed time schedule Can also be used for switching other external equipment b Q7300A1000 model configures for 1 heat 1 cool only fixed Uses conventional terminal designations Compressor changeover is controlled by the heat pump equipment 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 or specify 1 Order number 3 Order additional system components and system accessories 2 Accessories if desired separately If you have additional questions need further information or would like to comment on our products or services please write or phone 1 Your local Home and Building Control Sales Office please check the white pages of your phone directory 2 Home and Building Control Customer Relations Honeywell 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 In Canada Honeywell Limited Honeywell Limit e 35 Dynamic Drive Scarborough Ontario M1V 4Z9 International Sales and Service Offices in all principal cities of the world Manufacturi
46. ng in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 63 4038 7 2 THERMOSTAT ELECTRICAL RATING 24 to 30 Vac 50 60 Hz SYSTEM CURRENT DRAW 6 VA maximum at 30 Vac 50 or 60 Hz OUTPUT RELAY DRAW See Table 2 TABLE 2 MAXIMUM AMPS AT 30 VAC Running A Inrush A Fan Auxillary Economizer TEMPERATURE Ratings Ambient 40 F to 110 4 C to 43 Shipping 30 F to 150 F 34 C to 65 Display Accuracy 1 F 1 Setpoint Range 45 F to 95 F 7 C to 35 C Differential 2 F 1 C Default Settings See Table 3 TABLE 3 DEFAULT SETPOINTS 68 F 20 C 55 F 13 C 78 F 26 C 90 F 32 C REMOTE SENSOR WIRING TEMPERATURE OFFSET Temperature offset occurs with 500 ft 157m to 1000 ft 305m of 2 wire cable See Table 4 TABLE 4 TEMPERATURE OFFSET Temperature Range 18 AWG 20 AWG 22 AWG MINIMUM STAGE OPERATION TIME Conventional Heat Two minutes On or Off Compressor Two minutes On and four minutes Off HUMIDITY RATINGS 5 to 90 RH noncondensing CLOCK ACCURACY 1 minute per month BATTERY BACKUP Up to 60 hours with fresh 9 volt alkaline battery Mallory MN11604 or equivalent FINISH Beige thermostats with brown subbases or Premier White thermostats with light gray subbases DIMENSIONS See Fig 1 T7300 Doors See Fig 2 MOUNTING MEANS T7200 Thermostat mounts on
47. nventional equipment System none Fan Auto On L1006 LDS Church Q7300L1014 L1014 Tradeline 2 heat and 1 cool Q7300L1014 21 63 4038 7 T7200 17300 Q7300 WIRING DIAGRAMS Wiring Diagrams Fig 23 T7200A with wallplate T7200 THERMOSTAT WALLPLATE EXISTING HVAC EQUIPMENT HVAC EQUIPMENT TERMINAL STRIP SYSTEM TRANSFORMER Boe POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VAC SECONDARY MUST BE ABLE TO CARRY ADDITIONAL 6 VA LOAD OF THERMOSTAT AND SUBBASE A 63 4038 7 22 FIELD INSTALLED JUMPER M4405 T7200 17300 Q7300 WIRING DIAGRAMS Fig 24 T7200A with 1 stage cooling system with differential enthalpy changeover using W7459A C7400 with M7415 Actuator W7459A ECONOMIZER PACKAGE M7415 ACTUATOR TR TR1 OUTDOOR AIR ENTHALPY SENSOR C7400 RETURN AIR ENTHALPY SENSOR C7400 C7150B MIXED OR DISCHARGE AIR SENSOR MIXED AIR SENSOR MINIMUM POSITION ADJUSTMENT 36 zo Sg T6301 AMBIENT LOCKOUT CONTROL 50 F SETPOINT L1 HOT A T7200A HVAC EQUIPMENT WALLPLATE TERMINAL STRIP POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VAC SECONDARY ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER ACTUATOR T7200 AND WALLPLATE AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT RELAYS 1K AND 2K ACTUATE WHEN THE ENTHA
48. odule R8222 Switching Relay W950A System Supervisor W859D Packaged Economizer W7459 Economizer Logic Module Recycling Notice this control or of an old control containing mercury in a sealed tube Installation Thermostat With Remote Mounted Temperature Sensor s Install the thermostat in an area that is accessible for setting and adjusting the temperature and settings 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 4 Do not mount the sensor s where it can be affected by drafts or dead spots behind doors in corners or under cabinets hot or cold air from ducts radiant heat from the sun fireplace or appliances concealed pipes and chimneys unheated uncooled areas such as an outside wall behind the thermostat If more than one remote sensor is required they must be arranged in a temperature averaging network consisting of two three four five or nine sensors Instal as shown in Fig 5 9 REPLACE AN EXISTING THERMOSTAT OR NEW INSTALLATION Replace An Existing Thermostat Turn off all sources of power for the thermostat Re move any existing wallplate or subbase from the wall To avoid miswiring later label or write down each wire color with the letter or number on the wiring terminal as the wire is removed T7200 T7300 Q7300 INSTALLATION Fig 4 Location for inst
49. olid conductor wire when ever possible If using 18 gauge stranded wire no more than 10 wires can be used Do not use larger than 18 gauge wire Follow equipment manufacturer s wiring instructions when available See Fig 23 46 for wiring diagrams To wire subbase proceed as follows 1 Connect the correct wires to the terminals as shown in applicable diagram the terminal barrier allows straight or wraparound wiring connection See Fig 12 A letter code is located near each terminal for identification Typical termi nal designation and wiring connections are listed in Table 6 Connect remote temperature sensor or override switch module NOTE If aremote sensoris used be sure that the Q7300 DIP switch 5 is placed in the OFF position 63 4038 7 IN CAUTION Never install more than one wire per terminal unless using factory supplied jumper with spade terminal Fig 12 Barrier configuration Keep wiring restricted to recessed area surrounding termi nals FOR STRAIGHT INSERTION STRIP 5 16 in 8 mm ume a Si der FRONT VIEW OF TERMINAL AREA FOR WRAPAROUND RESTRICT STRIP 7 16 in 11 mm WIRING TO THIS AREA WIRING TO BE BELOW THIS SURFACE TOP SURFACE OF SUBBASE 2 CROSS SECTIONAL VIEW OF TERMINAL AREA M3062 2 Firmly tighten each terminal screw Loose or intermit tent wire connections can cause inconsistent system opera tion 3 Fit wires a
50. oves the integral calculation from the thermostat control scheme allowing only the proportional control to occur EQUIPMENT PROTECTION As part of the operational sequence the T7200 T7300 microprocessor also incorporates minimum On and Off times for all heating and cooling stages Minimum On and Off times assure that rapid cycling of equipment will not occur extending equipment life Minimum On Off times for compressor stages are two minutes On and four minutes Off Minimum On Off times for heat electric resistive or gas are two minutes T7200 T7300 THERMOSTAT OPERATION Startup When power to the thermostat is turned on a startup and initialization program begins The startup takes place after total loss of power 24 Vac and battery backup At this time the system default values are put into memory re placing the user program that was lost Default values are heating 68 F 20 C and cooling 78 F 26 C for the occu pied modes Unoccupied default values are heating 55 F 13 C and cooling 90 F 32 C 63 4038 7 T7200 T 300 Q7300 OPERATION NOTE These unoccupied defaults are only used if an unoc cupied start time is entered or the CONT UNOC key is pressed Immediately following initialization the user can enter new setpoints to be used in place of the default values If the battery backup was operating during a power failure and 24 Vac power comes back on the user entered time and temperature program sav
51. power is first turned on the LCD will show four dashes Without programming the thermostat will operate from default temperature setpoints see OPERATION section NOTE It is helpful to program the thermostat before using the Checkout procedure Refer to the Programming sec tion to set a program 13 If the display has two dashes and a degree sign wait sixty seconds and press the DISPLAY key twice If the display does not change or is blank refer to the Trouble shooting section TEST MODE The thermostat has a test mode that aids the installer in performing the checkout The test mode overrides the minimum on and off times so the checkout can be quickly performed Press the CLOCK and DAY keys at the same time to start the test mode AII the display segments will appear See Fig 19 63 4038 7 T7200 T7300 Q7300 CHECKOUT N CAUTION Do not use the test mode for longer than 10 min utes The test mode overrides the minimum on and off times that protect the system Equipment dam age can result if the thermostat remains in the test mode Fig 19 All segments on display I I TEST MODE INDICATOR ri rig LT Et I Ll ss COOL lt Su Mo Tu WE TH FR Sa BATT M4415 To discontinue the test mode at any time press the CLOCK and DAY keys at the same time The Test Mode Indicators will no longer show on the screen HEAT NOTE When the thermostat is used with a subbase with subbase
52. rride With or Key The 3 HOUR OCCUPIED key with the or key will override the unoccupied program for three hours with the occupied temperature setpoint the preassigned key value see Set or Key Value section 1 Press the 3 HOUR OCCUPIED key to change the unoccupied temperature setting to the occupied setpoint for three hours 2 Press the key to increase or press the key to decrease the occupied setpoint by the key value EXAMPLE Unoccupied setpoint is 62 F occupied setpoint is 70 F and key value is 3 F Pressing the 3 HOUR OCCUPIED key and the key will change the setpoint from 62 F to 70 F plus 3 F or 73 F Pressing the key would change the setpoint to 70 F minus 3 F or 67 F NOTE The program indicator will point to 3 HR OCCU PIED while the override is in effect The LCD will not reflect the key value Cont Unoc The continuous unoccupied override feature holds the setpoint at the unoccupied temperature setpoint until the DISPLAY or CONT UNOC key is pressed This override is used when the area will be closed for a temporary closing such as a long holiday 1 Press the CONT UNOC key to hold the temperature at the unoccupied setpoint 2 Press the CONT UNOC key again to return to the program Checkout OVERVIEW Check that all wiring is correctly completed and all sensors are installed The thermostat should be mounted on the wallplate or subbase If the thermostat has not been programmed when the
53. s close as possible to the subbase Push excess wire back into the hole 4 Plug hole with nonflammable insulation to prevent drafts from affecting the thermostat Refer to Fig 23 46 for typical hookups When system installation is complete perform the initial power up proce dure in the Checkout section 7200 7300 7300 INSTALLATION TABLE 6 TERMINAL DESIGNATIONS Standard Alternate Terminal Designations Or Designation Customer Specials Typical Connection Terminal Type a __ Heating damper motor changeover valvelrelay Output M Vac powered contact R Coine damper motor changeover valvefelay Output 24 Vac powered contact eee NE connected for heating and cooling R6 owecomeaionto cooling transformer pu Power connection wo heating transformer __ tage 3 heating conrol__ Output 24 Vae powered contact v Stage 3 cooling control Output 124 Vac powered contact x Common connection J PT Remote sensor dme on pan CS 9 wemewwycwwismngeve LEDI A A1 A2 Z C L LEDs Annunciation LED2 COM P TJ ixtemal temperature readout ES RR LO and HT speed fan relays O L T _ x m _ FALALAS Auxiliary rely a Q7300G only b Shielded cable can be required in some installations where electrical interference noise can cause control problems TABLE 7 THERMOST
54. th the heating or cool ing system If the subbase is Q7300D during unoccupied mode the fan cycles with Y1 and W1 NOTE The Q7300 switch no 4 has no effect when the thermostat is configured for heat pump EMERGENCY HEAT When the system switch is in the EM HEAT position on select Q7300 subbases the auxiliary heat is stage 1 and the compressor stages are locked off The fan cycles with the auxiliary heat GENERAL OPERATION INFORMATION Cycle Rates The thermostat control algorithm maintains the tem perature by cycling stages of heating or cooling to meet setpoint See Table 9 for the nominal cycle rates provided TABLE 9 NOMINAL CYCLE RATES FOR HEATING AND COOLING Conventional 8 8 4 4 4 Heat Pump 4 8 4 4 Subbase Auxiliary Relay The Q7300 auxiliary relay output acts as a time of day switch to be used with an economizer minimum position control The normally open A1 auxiliary relay contacts are closed during the occupied period and open during the unoccupied period The normally closed A3 auxiliary relay contacts are open during the occupied period and closed during the unoccupied period The contacts are in the normal state during recovery Interfacing with Electromechanical Economizers Subbases with Auxiliary Relay Mechanical cooling is often used when outside tempera tures are in the 50 to 60 F range and humidity is below 50 percent In central and northern climat
55. upied period allowing the economizer to operate normally The contacts are open duirng the unoccupied period disabling the mini mum position feature of the economizer The open contacts cause the economizer to drive dampers fully closed instead of staying at minimum open position This reduces the possibility of unsuitable outdoor air from entering the building which lowers the internal load on the HVAC system are saves additional energy 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 6A at 30 Vac but can be adapted to higher current applications with the use of an external relay and transformer See Fig 22 Duty Cycle Interface Duty cycling HV AC equipment controlled with a T7200 or T7300 is recommended because the thermostat is al ready maintaining an optimum control cycle rate Adding another external duty cyle increases the P I error being sensed and results in degradation of temperature control and equipment efficiency Fig 22 Use of external relay and transformer for auxiliary loads greater than 1 6A L1 L2 HOT Q7300 SUBBASE TO LOAD AUXILIARY CONTACTS POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A RELAY REQUIRED R8222 OR SIMILAR A TERMINAL A3 AVAILABLE ON Q7300A
56. y until the display shows four dashes NOTE If there is a second OCCUPIED setting the start for time this setting will appear instead of four dashes TEMPORARILY OVERRIDE PROGRAM There are three overrides available The 3 hour occupied overrides can be initiated from a remote location or the thermostat The 3 hour occupied override without or keys can also be initiated from the T7300B cover NOTE Pressing the DISPLAY key at anytime will return the thermostat to the program 3 Hour Occupied The 3 HOUR OCCUPIED key is used to override the unoccupied program when people need to use the area temporarily working late weekends or holidays 1 Press the 3 HOUR OCCUPIED key to change the unoccupied temperature setting to the occupied setpoint for three hours NOTE The program indicator will point to 3 HR OCCU PIED while the override is in effect 3 Hour Occupied with or Key T7200 T7300 Q7300 PROGRAM THE THERMOSTAT CHECKOUT SET OR KEY VALUE When using the or key with the 3 HOUR OCCU PIED key the or key has a preassigned value of 0 to 5 F default is 0 Use the following steps to check or change the value 1 Press the 3 HOUR OCCUPIED key The program indicator will point to 3 HR OCCUPIED 2 Press the DISPLAY key The LCD will show a number from to 5 3 Press the or key to change the value 4 Press the DISPLAY key to return to the program Set 3 Hour Occupied Ove
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