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CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Thermostat Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Heat or Cool Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Thermostat Front Panel Buttons . . . . . . . . . . . . . . . . . 2
Thermostat Programming Buttons . . . . . . . . . . . . . . . 2
Set Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Programming Thermostat Schedules. . . . . . . . . . . . . 3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5
Auto-Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Two-Stage Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Clock Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Emergency Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Holiday Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
IMPORTANT: Read entire instructions before program-
ming the thermostat.
GENERAL
Carrier's Aquazone 7-day, commercial, programmable ther-
mostat is a wall-mounted, low-voltage thermostat which main-
tains room temperature by controlling the operation of an
HVAC (heating, cooling and ventilation) system. Separate
heating and cooling set points and auto-changeover capability
allow occupied and unoccupied programming schedules for
energy savings.
This thermostat allows up to 3 occupied and one unoccu-
pied time/temperature setting to be programmed per 24-hour
period. Each thermostat stores programs for 7 independent
days. Batteries are not required. During power interruption the
internal NEVERLOST™ memory stores programs for an un-
limited time.
IMPORTANT: The thermostat has a configurable security
level. If certain functions are not available (changing set
points, changing programming schedules), the thermostat
security level may be configured to exclude those func-
tions. Call the installer to reconfigure the security level.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 535-00108
Book 1
4
Tab
5a 5a
Aquazone™ Water Source Heat Pump
Commercial 7-Day Programmable Thermostat
Owner's Manual
Part Number 50QE900-220WS
Printed in U.S.A.
CONFIGURATION
Thermostat Display -
ed in the center of the thermostat. See Fig. 1. The following in-
formation can be displayed on the screen:
• mode (OFF, HEAT, COOL, AUTO, or PROGRAM ON)
• fan setting (FAN ON or blank)
• override indication
• room temperature
• desired temperature
• service filter indicator
• time of day
• day of the week
• schedule period (Occupied 1, 2, or 3; or Unoccupied)
• setup indicator (Programming mode)
• lock indicator
• start/stop indicator (schedule period Programming mode)
Fig. 1 - Thermostat Display
Heat or Cool Indicator -
located on the bottom left cover of the thermostat. See Fig. 2.
The light will be red if the thermostat is in Heating mode. The
light will be green if the thermostat is in Cooling mode.
Form 50QE-1SO
Pg 1
50QE900
The thermostat display is locat-
A Heat or Cool indicator is
6-03
Replaces: New
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Summary of Contents for Carrier Aquazone 50QE900
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Page 1: Table Of Contents
• start/stop indicator (schedule period Programming mode) ming the thermostat. GENERAL Carrier’s Aquazone 7-day, commercial, programmable ther- mostat is a wall-mounted, low-voltage thermostat which main- tains room temperature by controlling the operation of an HVAC (heating, cooling and ventilation) system. Separate... -
Page 2: Thermostat Display
Thermostat Front Panel Buttons — The thermo- stat has buttons on the front cover which are used to raise or lower the desired set point and override the current program. See Fig. 2. SET POINT BUTTONS — The UP ARROW and DOWN ARROW buttons will raise or lower the current desired tem- perature set point. -
Page 3: Programming Thermostat Schedules
raise or lower the cooling set point until the desired temperature is shown. The range of acceptable values is 35 to 99 F (1 to 37 C) or ‘‘OF’’(no unoccupied cooling). Press the Mode button to continue. 5. The heating set point for Unoccupied will be displayed. Use the UP ARROW and DOWN ARROW buttons to raise or lower the heating set point until the desired tem- perature is shown. -
Page 4: Operation
Table 1 — Daily Schedule Planner SCHEDULE OF THE Occupied 1 Occupied 2 Occupied 3 Unoccupied WEEK Start / Stop / Heat / Cool Start / Stop / Heat / Cool Start / Stop / Heat / Cool Heat / Cool Monday Tuesday Wednesday... -
Page 5: Clock Backup
point is equal to or greater than the set point plus the deadband Holiday Mode — When the thermostat is in Holiday plus 2 degrees. mode, the thermostat will operate under Unoccupied set points. To configure and activate the Holiday mode, press the Holiday Clock Backup —... - Page 8 Copyright 2003 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 535-00108 Printed in U.S.A. Form 50QE-1SO Pg 8 6-03 Replaces: New Book 1...