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OWNER'S MANUAL
Programmable
Digital Thermostat
Carrier
74
I2:00
72
Mo
C
OOL
AUTO
70
H
EAT
Includes Locking Cover
Designed for Commercial Water Source Heat Pumps
Commercial Systems & Services
P/N 50QE900-511WS
A Q U A Z O N E
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
Carrier
Carrier Corporation 3/00
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Table of Contents
Related Manuals for Carrier 50QE900-511WS
Summary of Contents for Carrier 50QE900-511WS
- Page 1 OWNER'S MANUAL P/N 50QE900-511WS A Q U A Z O N E Programmable Digital Thermostat Dual Setpoint 5+1+1 Day Programmable Carrier 3 Occupied, 1 Unoccupied I2:00 Very Easy to Program Large, Easy To Read Display AUTO Thermoglow Backlight No Batteries Required...
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Page 2: Table Of Contents
Occupied / Unoccupied ADVANCED SETUP ABOUT ADVANCED OPERATION WARRANTY CAUTION Follow Installation Instructions before proceeding. SET THERMOSTAT TO MODE “OFF” PRIOR TO CHANGING SETTINGS IN SETUP OR RESTORING FACTORY DEFAULTS. Commercial Systems & Services Carrier Corporation 3/00 P/N 50QE900-511WS Page 1... -
Page 3: Front Panel
Front Panel Carrier I2:00 AUTO Liquid Crystal Display with Thermoglow Up/Down Buttons Mode Button Override Button Heat or Cool Indicator Heat = Red, Cool = Green Page 2... -
Page 4: Display
Display Mode Indicators Selects the operation mode of the equipment. HEAT - indicates the heat mode. COOL - indicates the air conditioning mode. AUTO - indicates the system will automatically changeover between heat and cool modes as the temperature varies. OFF - indicates the entire system is turned off. - Page 5 Display Override Indication Indicates the current program is currently being overridden for up to 4 hours. Page 7,17. Occupied or Unoccupied Indication Indicates the program number: Occupied 1,2,3, or Unoccupied. Page 8-12. Setup Indication Indicates the thermostat is in the programming mode.
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Page 6: Quick Start Set The Clock And Go
Quick Start Set the Clock and Go Press the Mode button. During Setup & Programming: While holding the Mode, MODE press the Override button Pressing the Mode button for 2 seconds to enter Setup selects different flashing items. OVERRIDE screens. (Represented in dark black) Pressing the Up and Down I2:00... -
Page 7: Basic Operation
Basic Operation Select Mode I2:00 The HEAT setting indicates the temperature the room has to reach before the furnace will Press turn on to heat the room. MODE I2:00 The COOL setting indicates the temperature the room has to reach before the air conditioner will turn on to cool the room. -
Page 8: Select Desired Temperature
Basic Operation Select Desired Temperature In any mode, adjust the I2:00 desired Set Temperature with AUTO buttons. Pressing the up/down buttons in Auto mode will adjust both the heat and cool set temperatures simultaneously. Pressing the up/down buttons in Heat or Cool modes will adjust only the heat or cool set temperature. -
Page 9: Programming
Programming Occupied & Unoccupied Periods Press the Mode button. While holding the Mode, press the Up button for 2 seconds to enter time period programming. MODE Occupied Select the maximum # of occupied periods to be used on any one day. Typically 1. - Page 10 Programming Occupied & Unoccupied Periods unoccupied Adjust the heating set- point for unoccupied periods. (35 - 99) Press MODE MoTuWeThFr Occupied Select the day for Occupied 1. (MoTuWeThFr, Sa, Su) Press MODE 7:00 Start MoTuWeThFr Occupied Adjust the start time for occupied 1.
- Page 11 Programming Occupied & Unoccupied Periods Occupied Select the day for Occupied 1. (Sa, Su, MoTuWeThFr) Press MODE 9:00 Start occupied Adjust the start time for occupied 1. Press MODE 5:00 Stop occupied Adjust the stop time for occupied 1. Press MODE occupied 1 Select Occupied 1 to run...
- Page 12 Programming Occupied & Unoccupied Periods occupied Select the day for Occupied 1. Press MODE 9:00 Start occupied Adjust the start time for occupied 1. Press MODE 5:00 Stop occupied Adjust the stop time for occupied 1. Press MODE occupied Select Occupied 1 to run on this day (On), or not to run this day (Off).
- Page 13 Programming Occupied & Unoccupied Periods PROGRAMMING NOTES If only 1 Occupied period is selected in step 1 on page 8, Occupied 2 & 3 programming steps are skipped. Further, if only 2 occupieds are selected, Occupied 3 programming steps are skipped. Heat &...
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Page 14: Advanced Setup
Advanced Setup Press the Mode button. MODE While holding the Mode, NOTE: Each step # is located at press the Override button the top right corner of the display for easy reference. for 5 seconds to enter Setup OVERRIDE screens. I2:00 Setup Adjust the time of day... - Page 15 Advanced Setup Setup Adjust the deadband from 1 - 6 degrees. Press MODE Setup Adjust the minimum difference between cooling & heating setpoints. (0 - 6 ) Press MODE Select the cycles per Setup hour limit. d=cycles per hour limit defeated. d1=d + defeat 5 min.
- Page 16 Advanced Setup Setup Select thermostat operation in degrees Fahrenheit or Centigrade. Press MODE Setup Select the reversing valve polarity for Heat Pump, O or B. MODE OVERRIDE Press the Mode button. While holding the Mode, press the Override button for 2 seconds to leave the Setup screens.
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Page 17: Advanced Setup Table
Advanced Setup Advanced Setup Table Step # Description Range Factory Default Time of day clock set 24 hour 12:00 Am Day of the week Sun - Sat Monday Display Blanking Off / On Fan operation Auto / On Auto Deadband or Temperature swing 1 - 6 Forced minimum difference heat/cool 0 - 6... -
Page 18: About Advanced Operation
About Advanced Features & Operation CLOCK BACKUP - In the event of a power loss, the thermostat internal clock will continue to keep proper time for a minimum of 48 hours without external power or batteries. 2 STAGE OPERATION - The 2nd Stage of heat or cool is turned on when (1) the 1st Stage has been on for a minimum of two minutes, and (2) the temperature spread from the setpoint is equal to or greater than: the setpoint... - Page 19 About Advanced Features & Operation EMERGENCY HEAT - To turn on Emergency Heat press in the Override button. While holding the Override button press the Up button for 2 seconds. The Cool setpoint display will read ‘EH’. I2:00 Press for Emergency Heat OVERRIDE During Emergency Heat the thermostat will turn...
- Page 20 About Advanced Features & Operation KEYPAD LOCK - To prevent unauthorized use of the thermostat, the front panel buttons may be disabled. To disable, or ‘lock’ the keypad, press and hold in the Mode button. While holding the Mode button in, press the Up and Down buttons in together.
- Page 21 About Advanced Features & Operation DUAL SETPOINT BEHAVIOR - The adjustable setpoint range is: 35 - 99 degrees in Fahrenheit and 7 - 35 degrees in Centigrade. When in the modes Heat or Cool, this adjustable range is unhampered. When adjusting any Auto mode, including programming Occupied and Unoccupied periods, the thermostat will not allow the Heat setpoint to get closer to the Cool setpoint than the value programmed as the minimum difference in...
- Page 22 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 Carrier I2:00 I2:00 AUTO AUTO Page 21...
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Page 23: Warranty
Warranty One- Y ear War r a nt y – ppear s wi t h i n t a l l a t i o n, whet h er or not act u al use begi n s on t h at dat e , t h at he pr o duct does not meet t h i s war r a nt y a new or r e manuf a ct u r e d par t at t h e COMPANY’...