McQuay 668375301 Page 7 Operation And Application Manual Download | Manualshive

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ELECTRONIC THERMOSTAT

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McQUAY SINGLE CIRCUIT

Mark IV Board

Low Voltage Terminal Board

Terminal Designator Descriptions

Wiring Diagrams

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Summary of Contents for 668375301

Page 1: ...For replacement parts call 1 800 377 2787 2008 McQuay International www mcquay com 800 432 1342 Programmable and Configurable Single Dual Stage Heat Cool Systems Backlit Display Auto Changeover Simple...

Page 2: ...nstallation Optional 4 Terminal Designator Descriptions 5 Wiring Diagrams 5 Configuration Mode 7 Testing the Thermostat 1 1 Mode of Operation 12 Operating Modes 13 Setting the Time and Day of the Week...

Page 3: ...nals of gas valve or system control to test operation this will damage your thermostat and void your warranty All wiring must conform to local and national electrical and building codes Do not use air...

Page 4: ...m wall 6 Refer to the following section for instructions on how to install this thermostat To Remove Existing Thermostat ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing th...

Page 5: ...ed the control wires through wire opening 9 Use supplied screws to mount thermostat base to wall 10 Insert stripped labeled wires in matching wire terminals See Wiring Diagrams section of this manual...

Page 6: ...r wire in conduit with other wires Wire 1 should run between the S1 terminal on the thermostat and the S1 terminal on the remote sensor Wire 2 should run between the S2 terminal on the thermostat and...

Page 7: ...C Y2 W2 Y1 W1 R ELECTRONIC THERMOSTAT W 2 G W 1 Y 1 F E L U A P V R C O McQUAY SINGLE CIRCUIT Mark IV Board Low Voltage Terminal Board Terminal Designator Descriptions Wiring Diagrams G...

Page 8: ...1 R McQUAY DUAL CIRCUIT Mark IV Board Circuit 1 Low Voltage Terminal Board Mark IV Board Circuit 2 Low Voltage Terminal Board ELECTRONIC THERMOSTAT W 2 G W 1 Y 1 F E L U A P V R C O W 2 G W 1 Y 1 F E...

Page 9: ...creens for configuration mode are as follows 1 Heat pump Press the or button to configure as heat pump or non heat pump system ON Heat pump system OFF Non heat pump system Press the button to advance...

Page 10: ...vance to the next screen 4 Temperature scale F or C Choose Fahrenheit or Celsius Press the or button to select Press the button to advance to the next screen 8 Staged off outputs Select whether the ou...

Page 11: ...ycle 0 120 seconds Time fan is delayed turning ON at start of cool cycle For no delay set to 0 00 Press the or button to set delay CAUTION Changing from the default of 0 00 may permanently damage your...

Page 12: ...7 and minimum cool set temperature selected in Step 18 Note The mode cannot be changed when the thermostat is locked Press the or button to select Press the button to advance to the next screen 19 Roo...

Page 13: ...econds 4 Adjust the set temperature 2 degrees above the room temperature and the A C should turn off There may be a fan delay on your system Note There is a four minute time delay to protect the compr...

Page 14: ...the following operating modes OFF Heat Cool Cool and Heat and Program mode In OFF mode the thermostat will not turn on heating or cooling devices The indoor fan can be turned on in all operating modes...

Page 15: ...to ON Note 2 To enter Programming Fan Only Mode press the button once Only the indoor fan will operate during that period if it is activated in the program setup Operating Modes Cool and Heat Mode Th...

Page 16: ...ogram schedule manually press the button twice Setting the Time and Day of the Week 5 Press the button while the time is displayed The display shows the day currently set on the thermostat 1 Monday 2...

Page 17: ...Verify thermostat is in non programmable mode use the button to exit prog mode 2 Press and release the button until OFF mode displays 3 Press the button for 6 seconds 4 Press the button twice Day is d...

Page 18: ...yed 45 F to 85 F 13 Press the or button to adjust cool set temperature 14 Press the button to advance to the next screen Programmable fan is displayed 15 Press the or button to turn ON OFF continuous...

Page 19: ...can go through each day and make any changes you require This feature speeds up the programming of the standard weekday weekend schedule 3 Press button for 5 seconds to exit Program mode Simpleset Pro...

Page 20: ...OL 78 F COOL 85 F COOL 78 F COOL 82 F FAN ON OFF FAN ON OFF FAN ON OFF FAN ON OFF MONDAY thru SUNDAY Programmable fan option Factory Preprogramming Use the following personal program schedule to recor...

Page 21: ...N ON OFF FRIDAY 5 MORN DAY EVE NITE HEAT HEAT HEAT HEAT COOL COOL COOL COOL FAN ON OFF FAN ON OFF FAN ON OFF FAN ON OFF SATURDAY 6 MORN DAY EVE NITE HEAT HEAT HEAT HEAT COOL COOL COOL COOL FAN ON OFF...

Page 22: ...at Electric ON 4 F C F 5 Differential Stage 1 1 6 Differential Stage 2 2 7 Deadband 5 8 Staged Off Outputs ON 9 Heat Fan Delay on 0 00 10 Heat Fan Delay off 0 00 1 1 Cool Fan Delay on 0 00 12 Cool Fan...

Page 23: ...On Auto switch check programmable fan setting in program check fan settings in configuration see Configuration Mode Pages 7 10 Room temperature is not correct Verify wall hole is plugged with putty o...

Page 24: ...uipment is sold pursuant to its standard terms and conditions of sale including Limited Product Warranty Consult your local McQuay Representative for warranty details Refer to Form 933 43285Y To find...

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