Carrier AQUAZONE 50QE900-250FS User manual

OWNER'S MANUAL
P/N 50QE900-250FS
Programmable
Digital Thermostat
Mounts Flush to the Wall
7 Day Programmable
3 Occupied, 1 Unoccupied
Auto Changeover
Large, Easy To Read Display
Thermoglow Backlight
Remote Sensor Ready
Dry Contact Equipped
Energy Saving Smart Fan
Fan Purge, IAQ Feature
Includes Locking Cover
Commercial Systems & Services Carrier Corporation 3/00
Meets California Title 24
Designed for Commercial Water Source Heat Pumps
72
74
70
Am
COOL
HEAT
AUTO
Mo
I2:00
AQUAZONE

Table Of Contents
FRONT PANEL
DISPLAY
QUICK START Set the clock and go
BASIC OPERATION
PROGRAMMING Occupied / 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 50QE900-250FS
2
3
5
6
8
12
17
23
Commercial Systems & Services Carrier Corporation 3/00

Front Panel
Page 2
Liquid Crystal Display
with Thermoglow
Up/Down Buttons
Mode Button
Override Button
Heat or Cool Indicator
Heat = Red, Cool = Green
Temperature Sensor Bubble
1
2
3
4
5
6
1
3
5
2
4
6

1
2
4
3
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.
PROGRAM ON - indicates the stored program
is enabled to run. Page 6.
Clock with Day of the Week
Indicates the current time and day. This clock is
also used to program the timer periods. Page 5.
Room Temperature Display
Indicates the current room temperature.
Desired Set Temperature
Indicates desired room temperature(s). Page 7.
Display
Page 3
1
21
5
1
3
6
7
10
9
8
4
4
11
1
1
88
88
88
unoccupied
Program
Fan On Service Filter
On
Am
Pm
COOL
HEAT
Override
Locked
ONOFF
AUTO
Stop
Start
SetupSuMoTuWeThFrSa
123
I2:00

5
6
7
8
9
10
11
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 8-11.
Setup Indication
Indicates the thermostat is in the programming
mode. Page 12.
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 12.
Service Filter Indication
Service Filter indicates when the filter should
be serviced under normal conditions.
Appears after 0 - 1950 hours of blower
operation (adjustable). Page 14.
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 when programming
timer functions. Page 9.
Display
Page 4