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

During Setup & Programming:
Pressing the Mode button
selects different flashing items.
(Represented in dark black)
Pressing the Up and Down
buttons will modify the flashing
selection.
Press the Mode button.
While holding the Mode,
press the Override button
for 2 seconds 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 Day use
Press
I
I2:00
2
Su
OVERRIDE
OVERRIDE
MODE
MODE
MODE

The HEAT setting indicates the
temperature the room has to
reach before the furnace will
turn on to heat the room.
The COOL setting indicates the
temperature the room has to
reach before the air conditioner
will turn on 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
Press
Press
Press
70 69
Pm
HEAT
Mo
I2:00
70
72
Pm
COOL
Mo
I2:00
70
72
69
Pm
COOL
HEAT
AUTO
Mo
I2:00
70
73
70
unoccupied
ProgramOn
Pm
COOL
HEAT
Mo
1
I2:00
70
Pm
OFF
Mo
I2:00
MODE
MODE
MODE
MODE

buttons.
In any mode, adjust the
desired Set Temperature
with
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.
Select Desired Temperature
Override
Page 7
Basic Operation
During programmed, unoccupied periods
a press of the Override button will force
the thermostat into Occupied 1 comfort
settings, temporarily.
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 override.
During Override, the setpoints are
adjustable, provided the keypad is not
locked.
Press
OVERRIDE
70
72
69
Pm
COOL
HEAT
AUTO
Mo
I2:00
65
85
55
unoccupied
ProgramOn
Pm
COOL
HEAT
Stop
Su
I2:00
73
74
72
occupied
ProgramOn
Pm
Pm
COOL
HEAT
Override
Su
1
0:30
I2:00

Programming Occupied & Unoccupied Periods
Page 8
Press
Press
Press
Press
Press the Mode button. While holding the Mode,
press the Up button for 2 seconds to enter
time period 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

MODE
Programming Occupied & Unoccupied Periods
Page 9
Press
Press
Press
Press
Press
Continued
Adjust the heating set-
point for unoccupied
periods.
(35 - 99)
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.
(M - S)
Off
On
MODE
MODE
MODE
MODE
55
unoccupied
HEAT
occupied
Mo
1
occupied
Am Start
Mo
1
7:00
occupied
Pm Stop
Mo
1
6:00
occupied
ON
Mo
1

Programming Occupied & Unoccupied Periods
Page 10
Press
Press
Press
Press
Press
Continued
Adjust the start time
for occupied 1.
Adjust the stop time
for occupied 1.
Select the day
for Occupied 1.
Select Yes or No to copy
the previous day’s
program to this day.
Yes
No
If Yes is selected:
If No is selected:
Selecting Yes, then pressing mode will copy the
previous day’s program and then will ask the
same copy question again. If yes is selected
each time, this routine will repeat until Saturday
is copied to Sunday. After Saturday is copied
to Sunday, the copy command is unavailable.
The copy command becomes available after the maximum # of
occupied periods are programed in a day. This example uses 1
as the maximum occupied periods ever programed in one day.
(T - M)
MODE
MODE
MODE
MODE
MODE
Co Py
Tu
No
occupied
Tu
1
Occupied
Am Start
Tu
1
9:00
Occupied
Pm Stop
Tu
1
5:00

Programming Occupied & Unoccupied Periods
Page 11
Press
Select Occupied 1 to run
on this day (On), or not to
run this day (Off).
Off
On
Press
Select Yes or No to copy
the previous day’s
program to this day.
Yes
No
Press
If Yes is selected: If No is selected:
Selecting Yes, then pressing mode will copy the
previous day’s program and then will ask the
same copy question again. If yes is selected
each time, this routine will repeat until Saturday
is copied to Sunday. After Saturday is copied
to Sunday, the copy command is unavailable.
If no is selected, as in previous steps flashing prompts for input will appear for
start and stop times for Occupied 1. If more than one occupied period was
selected in step 1 on page 8, then cool/heat setpoints, and start/stop times
for additional occupied periods will be prompted.
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 & Cool setpoints for Occupied 1 are the same for every day of the week. Heat & Cool setpoints
for Occupied 2 & 3 can be adjusted differently for each day of the week, if desired.
If the start time is set later in the day than the stop time, the program will run from the start time to
midnight and from midnight to the stop time on the same day. For example: 9:00pm start, 8:00am stop,
on Monday. In this example the program will run from 12:00am Monday to 8:00am Monday and again
from 9:00pm Monday to 12:00pm Monday.
The Unoccupied settings take effect at all times when: (1) the program is on and (2) the current time is
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 within another occupied period the lower occupied # has
priority. For example: If Occupied 3 is programmed to be “on” 24 hours, and Occupied 2 is
programmed to run that day, then Occupied 2 settings will take over from occupied 3 between
Occupied 2 start and stop times.
outside a preset occupied period. For this reason start and stop times aren’t necessary for unoccupied.
MODE
MODE
MODE
Occupied
OFF
Tu
1
Co Py
We
No

Advanced Setup
Page 12
Press
Press
Press
Press
Continued
Adjust the time of day
clock.
Select the day of the
week.
Press 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.
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
SetupMo
Adjust the number of
hours the blower will
run before the Service
Filter icon appears on
the display. 0 = off.
Reset the Service Filter
counter to 0, to remove
the icon from the display.
(0 - 1950)
Press
OVERRIDE
3
Service Filter
Setup
0
4
Service Filter
Setup
500

Advanced Setup
Page 13
Press
Press
Press
Press
Press
Continued
Adjust the minimum
difference between
cooling & heating
setpoints.
Select the cycles per
hour limit.
d=cycles per hour
limit defeated.
d1=d + defeat 5 min.
Compressor lockout.
Adjust the deadband
from 1 - 6 degrees.
(0 - 6 )
(d, d1, 2 - 6)
81f
MODE
MODE
MODE
MODE
MODE
2
6
Setup
88
2
7
COOL
HEAT
Setup
6
8
Cy
Setup
Select fan operation,
Fan On or Fan Auto.
Fan On
Fan Auto
Fan
5
AUTO
Setup
Adjust the preoccupancy
fan purge timer.
0 - 3 hours.
0:00 = off
Pu
9
Setup
0:00

Advanced Setup
Page 14
Press
Press
Press
Press
Continued
Select the display back-
light always On, or Off
after 8 seconds.
Select the unit ID for
‘Soft Start’. This is used
in multiple installs to
stagger equipment turn
on times. 0 = off.
Each # = 30 second delay.
(0 - 99)
On
Off
MODE
MODE
MODE
MODE
L I
I0
ON
Setup
0
I I
Start
Setup
Sof
Select thermostat
operation in degrees
Fahrenheit or Centigrade.
C
F
F
I2
Setup
Yes
No
Select the sensor type:
Yes = Outside or Duct
sensor
No =Automatic Detection
of Remote Sensor
To view Outside or Duct temperature
press and hold Mode 2 seconds, min.
The thermostat will not control to Outside or Duct Sensors.
I3
Setup
No

Advanced Setup
Page 15
Press
Press
Press
Select the security level:
0=no security in effect
1=setpoint range limited
2=1+ program on all times
3=2 + prohibits setpoint
changes
Adjust the maximum
allowable heat setpoint
when security is in effect.
(Step 15 only appears
if step 14 is not 0).
(35 - 99)
Continued
MODE
MODE
MODE
O
I4
Locked
Setup
Sec
80
I5
HEAT
Locked
Setup
hi
Adjust the minimum
allowable cool setpoint
when security is in effect.
(Step 16 only appears
if step 14 is not 0).
(35 - 99)
65
I6
COOL
Locked
Setup
lo

MODE
OVERRIDE
Advanced Setup
Page 16
Press
Press 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.
Step # Description Range Factory Default
1 Time of day clock set 24 hour 12:00 Am
2 Day of the week Sun - Sat Monday
3
4
5 Fan operation Auto / On Auto
6
7
8
9
10
11
12
13
Reset Service Filter icon - - - -
Service Filter run time set 0 -1950 500
Deadband or Temperature swing 1 - 6 2
Forced minimum difference heat/cool 0 - 6 2
Cycles per hour d, d1, 2 - 6 6
Fan Purge timer 0:00 - 3:00 0:00
Thermoglow backlight Off / On On
Soft Start 0 - 99 0
Fahrenheit or Centigrade F / C F
Outside/Duct Sensor Yes / No No
Advanced Setup Table
14 Security Levels 0 - 3 0
15 Maximum allowable Heat setpoint 35 - 99 80
16 Minimum allowable Cool setpoint 35 - 99 65
17 Reversing Valve polarity O /B O
Select the reversing
valve polarity for
Heat Pump, O or B.
B
O
0
Setup
0
I7
Setup

About Advanced Features & Operation
Page 17
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
plus the deadband, plus 2 degrees.
Heat
Setpoint
Cool
Setpoint
Dead
Band
Dead
Band
2 degrees 2 degrees
1st Stage
turn on
2nd Stage
turn on
1st Stage
turn on
2nd Stage
turn on
Heating Cooling
MINIMUM HEAT/COOL SETPOINT DIFFERENCE - The Heat
and Cool setpoints will not be allowed to come any closer
to each other than the value set in Advanced Setup step
# 7, on page 13. This minimum difference is enforced
during Auto changeover operation.
and Program On
ENERGY SAVING SMART FAN - If Fan On is selected,
page 13, step 5, 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 periods.
OVERRIDE - As explained on page 7, pressing the Override
button during a programmed, Unoccupied period will force
the thermostat into Occupied 1, temporarily, up to 4 hours.
If the Override button is pressed during an Occupied
period, the thermostat will be forced into Unoccupied and
occupied # (1,2 or 3), it was forced out of will be
off, only for that day.
During Override periods the setpoints may be adjusted,
but they will not be remembered after Override ends.
the
turned

About Advanced Features & Operation
Page 18
FAN PURGE TIMER - When this feature is activated, the fan
will turn on during Unoccupied at a preset amount of time
prior to Occupied 1. This preoccupancy fan purge timer
may be set as instructed on page 13, step #9, from
0 - 3 hours. 0 = this feature turned off.
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’.
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.
Press for
Emergency Heat
OVERRIDE
73
eh
74
Am
HEAT
Mo
I2:00

About Advanced Features & Operation
Page 19
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. The Locked icon will appear on the
display.
DRY CONTACT SWITCH - The terminals are ‘normally open’.
Closing or completing the circuit will cause the thermostat
enter Occupied 1. This feature allows an external
such as a Central Time Clock, Occupancy Sensor,
Telephone activated device to force 1 or more
Occupied 1. For the Dry Contact to work
must be in Program On. Set Occupied 1
days, so the Contact closure will be in
is forced into Occupied 1
closure, the icon Occupied 1 will blink.
to
device
or a
thermostats into
the thermostat
to Off for all 7
control. When the thermostat
via the Dry Contact
Press all 3 for
Keypad Lockout
To unlock 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.
CK1
GND
Important Note: For control of multiple
thermostats by 1 source, refer to
document P/N 88-175 ‘Potential Phasing
Problems’ before installation.
MODE
85
55
unoccupied
On
Pm
COOL
HEAT
Locked
We
I2:00