Carrier 33CS Installation, Start-Up, And Operating Instructions Manual

Commercial Programmable Thermostat
Installation, Start-Up, and
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Select Thermostat Location . . . . . . . . . . . . . . . . . . . 1
Install Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Set Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Heat Pump Configuration . . . . . . . . . . . . . . . . . . . . . 3
Configure Advanced Setup . . . . . . . . . . . . . . . . . . . 3
Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Program Thermostat Schedules . . . . . . . . . . . . . . . 4
Calibrate Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Check Thermostat Operation . . . . . . . . . . . . . . . . . 6
Final Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Autochangeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Two-Stage Operation . . . . . . . . . . . . . . . . . . . . . . . . . 7
Clock Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Emergency Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Holiday Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Keypad Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 8
IMPORTANT: Read entire instructions before start-
ing the installation.

SAFETY CONSIDERATIONS

Read and follow manufacturer instructions carefully. Fol-
low all local electrical codes during installation. All wiring
must conform to local and national electrical codes. Im-
proper wiring or installation may damage thermostat.
Recognize safety information. This is the safety alert sym-
bol . When the safety alert symbol is present on equip-
ment or in the instruction manual, be alert to the potential
for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety alert sym-
bol. DANGER identifies the most serious hazards which will
result in severe personal injury or death. WARNING signi-
fies a hazard which could result in personal injury or death.
CAUTION is used to identify unsafe practices which would
result in minor personal injury or property damage.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
PC 111
Tab 11a 13a
Operating Instructions
Part Number 33CS220-01
Page
Catalog No. 533-321 Printed in U.S.A.

GENERAL

The 7-day, commercial, programmable thermostats are wall-
mounted, low-voltage thermostats which maintain room tem-
perature by controlling the operation of an HVAC (heating,
cooling and ventilation) system. Separate heating and cool-
ing set points and auto-changeover capability allow occu-
pied and unoccupied programming for energy savings.
All thermostats allow up to 4 time/temperature settings 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 programmed schedules for an unlimited time
while the clock continues to run for at least 48 hours.
The thermostat can be configured to accept several dif-
ferent equipment configurations, including heat pump
operation.
NOTE: The thermostat is not factory-configured for use in
heat pump applications. The advanced setup must be per-
formed to configure the thermostat for use with heat pump
units.

INSTALLATION

Select Thermostat Location -

be mounted:
• approximately 5 ft from the floor
• close to or in a frequently used room, preferably on an
inside partitioning wall
• on a section of wall without pipes or ductwork
• where temperature operating limits are within 41 to 104 F
(5 to 40 C)
• where humidity operating range is within 0 to 95% rela-
tive humidity, non-condensing
The thermostat should NOT be mounted:
• close to a window, on an outside wall, or next to a door
leading to the outside
• where exposed to direct light and heat from a lamp, the
sun, a fireplace, or any other temperature-radiating object
which may cause a false reading
• close to or in direct airflow from supply registers or return
air grilles
• in areas with poor air circulation (such as behind a door or
in an alcove)
Form 33CS-15SI Pg 1
33CS
The thermostat should
1-98 Replaces: New