Carrier 50QE900-511WS Owner'S Manual Download Page 1

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OWNER'S MANUAL

P/N 50QE900-511WS

Programmable

Digital Thermostat

Dual Setpoint
5+1+1 Day Programmable
3 Occupied, 1 Unoccupied
Very Easy to Program
Large, Easy To Read Display
Thermoglow Backlight
No Batteries Required
Auto Changeover
Energy Saving Smart Fan
Locking Keypad
Override Button

Meets California Title 24

Designed for Commercial Water Source Heat Pumps

Commercial Systems & Services Carrier Corporation 3/00

Carrier

OOL

EAT

AUTO

I2:00

Carrier

Includes Locking Cover

A Q U A Z O N E

Summary of Contents for 50QE900-511WS

Page 1: ...ge Easy To Read Display Thermoglow Backlight No Batteries Required Auto Changeover Energy Saving Smart Fan Locking Keypad Override Button Meets California Title 24 Designed for Commercial Water Source Heat Pumps Commercial Systems Services Carrier Corporation 3 00 Carrier 72 74 70 COOL HEAT AUTO Mo I2 00 Carrier Includes Locking Cover A Q U A Z O N E ...

Page 2: ... Unoccupied ADVANCED SETUP ABOUT ADVANCED OPERATION WARRANTY Page 1 CAUTION Follow Installation Instructions before proceeding SET THERMOSTAT TO MODE OFF PRIOR TO CHANGING SETTINGS IN SETUP OR RESTORING FACTORY DEFAULTS P N 50QE900 511WS 2 3 5 6 8 13 17 22 Commercial Systems Services Carrier Corporation 3 00 ...

Page 3: ...ont Panel Page 2 Liquid Crystal Display with Thermoglow Up Down Buttons Mode Button Override Button Heat or Cool Indicator Heat Red Cool Green 1 2 3 4 5 2 3 4 5 1 72 74 70 COOL HEAT AUTO Mo I2 00 Carrier ...

Page 4: ... temperature varies OFF indicates the entire system is turned off PROGRAM ON indicates the stored program is enabled to run Page 8 Clock with Day of the Week Indicates the current time and day This clock is also used to program the timer periods Page 13 Room Temperature Display Indicates the current room temperature Desired Set Temperature Indicates desired room temperature s Page 7 Display Page 3...

Page 5: ... the thermostat is in the programming mode Page 13 Fan Operation Indication Fan On indicates constant continuous fan operation When Fan On is not lit indicates the fan will only operate when necessary to heat or to cool Page 13 Locked Indication Locked appears after the right combination of buttons are pressed rendering the buttons inoperative Page 19 Start Stop Indication Start or Stop appears wh...

Page 6: ...nds to enter Setup screens Press both Mode and Override buttons as above to return to normal operation Quick Start Set the Clock and Go Page 5 The thermostat is preprogrammed from the factory to operate 1 or 2 Stage equipment without the need for further programming To optimize the installation of this thermostat follow the instructions in the Advanced Setup section buttons To adjust the clock or ...

Page 7: ...n to cool the room OFF indicates both heating and air conditioning systems are turned off AUTO will automatically select heat or cool based on room temperature demand Program On will activate the stored timer operation occupied unoccupied periods Select Mode Basic Operation Page 6 Press MODE Press MODE Press MODE Press MODE 70 I2 00 69 Su 70 72 I2 00 Su 70 72 I2 00 69 Su 70 73 I2 00 70 Su occupied...

Page 8: ...mporarily With each successive push of the Override button the override timer will add 30 minutes until the maximum of 4 hours is reached Then the next press will zero out the override timer returning to unoccupied if there are no further button presses When in Override the Override icon and the Occupied 1 icon appear on the display The time of day clock alternates with the time remaining in overr...

Page 9: ...riod programming Continued Select the maximum of occupied periods to be used on any one day Typically 1 1 2 or 3 Adjust the cooling setpoint for occupied 1 Adjust the cooling setpoint for unoccupied periods Adjust the heating setpoint for occupied 1 35 99 35 99 35 99 MODE MODE MODE MODE MODE Occupied 1 74 Occupied COOL 1 74 72 Occupied COOL HEAT 1 85 unoccupied COOL ...

Page 10: ... Select the day for Occupied 1 Adjust the stop time for occupied 1 Select Occupied 1 to run on this day On or not to run this day Off Adjust the start time for occupied 1 MoTuWeThFr Sa Su Off On MODE MODE MODE MODE 55 unoccupied HEAT Occupied MoTuWeThFr 1 Occupied Am Start MoTuWeThFr 1 7 00 Occupied Pm Stop MoTuWeThFr 1 6 00 Occupied ON MoTuWeThFr 1 ...

Page 11: ...he start time for occupied 1 Adjust the stop time for occupied 1 Select the day for Occupied 1 Sa Su MoTuWeThFr MODE MODE MODE MODE Occupied Sa 1 occupied Am Start Sa 1 9 00 occupied Pm Stop Sa 1 5 00 Select Occupied 1 to run on this day On or not to run this day Off Off On occupied 1 Su On ...

Page 12: ...ct the day for Occupied 1 Select Occupied 1 to run on this day On or not to run this day Off Off On occupied ON Su 1 occupied Pm Stop Su 1 5 00 occupied Am Start Su 1 9 00 Press Press Press MODE MODE MODE Press the Mode button While holding the Mode press the Up button for 2 seconds to exit time period programming MODE To Exit Programming ...

Page 13: ...program will run from 12 00am MTWTF to 8 00am MTWTF and again midnight and from midnight to from 9 00pm MTWTF to 12 00pm MTWTF The Unoccupied settings take effect at all times when 1 the program is on and 2 the current time is outside a preset occupied period If the same start and stop times are programmed in for an occupied period then it will run 24 hours If one occupied period starts and stops ...

Page 14: ...ess the Mode button While holding the Mode press the Override button for 5 seconds to enter Setup screens NOTE Each step is located at the top right corner of the display for easy reference Display On Display Off Fan On Fan Off Tip To change hours quickly press and hold the override button in and press the up or down buttons OVERRIDE MODE MODE MODE MODE MODE I Am Setup I2 00 2 Setup Mo dsp 3 ON Se...

Page 15: ...tpoints Adjust the deadband from 1 6 degrees 0 6 81f MODE MODE MODE MODE 2 5 Setup 88 2 6 COOL HEAT Setup Select the display back light always On or Off after 8 seconds On Off Select the cycles per hour limit d cycles per hour limit defeated d1 d defeat 5 min Compressor lockout d d1 2 6 6 7 Cy Setup Setup L I 8 ON ...

Page 16: ... the Mode button While holding the Mode press the Override button for 2 seconds to leave the Setup screens If no buttons are pressed the display will leave the setup screens after 30 seconds Press MODE Setup F 9 OVERRIDE MODE Select the reversing valve polarity for Heat Pump O or B B O 0 I0 Setup ...

Page 17: ...the week Sun Sat Monday 3 Display Blanking Off On On 4 Fan operation Auto On Auto 5 6 7 8 9 10 Deadband or Temperature swing 1 6 2 Forced minimum difference heat cool 0 6 2 Cycles per hour d d1 2 6 6 Thermoglow backlight Off On On Fahrenheit or Centigrade F C F Reversing Valve polarity O B O Advanced Setup Table ...

Page 18: ...ol setpoints will not be allowed to come any closer to each other than the value set in Advanced Setup step 6 on page 14 This minimum difference is enforced during Auto changeover operation and Program On ENERGY SAVING SMART FAN If Fan On is selected page 13 step 4 the fan will run continuously at all times except in Off and will only run if there is a heating or cooling demand in Unoccupied perio...

Page 19: ...splay will read EH During Emergency Heat the thermostat will turn on the fan and the 2nd stage of heat when there is a demand for heat locking out the 1st stage compressor Exiting Emergency Heat is the same as entering During Emergency Heat only OFF and HEAT are available To turn on Emergency Heat press in the Press for Emergency Heat OVERRIDE 73 eh I2 00 74 Su ...

Page 20: ...ock the buttons again press and hold the Mode button While holding the Mode button in press the Up and Down buttons in together The Locked icon will disappear from the display The thermostat display may be configured in advanced setup page 13 step 3 to always be visible as normally expected or may be selected Off When selected Off only the time of day will appear until a button is pressed When a b...

Page 21: ...to mode from Cool the Heat and Cool setpoints will remain spread apart by the amount that they were adjusted prior to entering Auto For example If the Cool setpoint was set to 80 while in the Cool mode and the Heat setpoint was adjusted to 70 while in the Heat mode upon entering the Auto mode the Heat and Cool setpoints would be 80 and 70 Both setpoints would then move up and down together in this...

Page 22: ... sec All icons will appear Press and hold in the Override button until Fd appears This resets all factory settings To calibrate room temperature press the Mode button once more At this point use the Up and Down buttons to calibrate room temperature if needed Press the Mode button to return to normal operation NOTE CAUTION ON PAGE 1 LOCKING COVER w Tamper Proof Screws 72 72 74 74 70 70 COOL COOL HE...

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