Carrier 33CS220-LA Owner's Manual

CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Thermostat Display . . . . . . . . . . . . . . . . . . . . . . . .
Heat or Cool Indicator . . . . . . . . . . . . . . . . . . . . .
Thermostat Front Panel Buttons . . . . . . . . . . . .
Thermostat Programming Buttons . . . . . . . . . .
Set Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Programming Thermostat Schedules . . . . . . .
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5
Auto-Changeover . . . . . . . . . . . . . . . . . . . . . . . . . .
Light-Activated Operation . . . . . . . . . . . . . . . . . .
Two-Stage Operation . . . . . . . . . . . . . . . . . . . . . .
Clock Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emergency Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Holiday Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPORTANT: Read entire instructions before program-
ming the thermostat.

GENERAL

Carrier's 7-day, commercial, programmable thermostats
are wall-mounted, low-voltage thermostats which maintain
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.
All thermostats allow up to 3 occupied and one un-
occupied 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 pro-
grams for an unlimited 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.
A light sensor is provided on the thermostat for light
activation. When the sensor detects light (the space is
occupied), the thermostat will enter into Occupied 1 mode.
If the room is dark, the thermostat will follow its pro-
grammed schedule.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
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Owner's Manual
Part Number 33CS220-LA
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Catalog No. 533-332 Printed in U.S.A.

Programmable Thermostat

CONFIGURATION

Thermostat Display -

located in the center of the thermostat. See Fig. 1. The fol-
lowing information 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 program mode)
Fig. 1 - Thermostat Display

Heat or Cool Indicator -

is 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.
Thermostat Front Panel Buttons -
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. If the thermostat is in AUTO mode, press-
ing the UP ARROW or DOWN ARROW buttons will adjust
Form 33CS-6SO Pg 1
33CS
Commercial
The thermostat display is
A Heat or Cool indicator
The thermo-
2-98 Replaces: New