Carrier 33CS Installation And Operating Instructions Manual

33CS
Fan Coil
Programmable Thermostat
Installation and Operating Instructions
Part Number 33CSSP2-FC
IMPORTANT: Read entire instructions before starting
the installation.
CONTENTS
SAFETY CONSIDERATIONS ...................... 1
GENERAL ........................................ 1
INSTALLATION ................................ 1-10
Select Thermostat Location ...................... 1
Install Thermostat ................................ 1
Changeover Sensor .............................. 3
Set Clock ......................................... 3
Configure Advanced Setup ....................... 3
Install Accessories ............................... 7
Program Thermostat Schedules .................. 7
Factory Defaults ................................. 8
Calibrate Sensor ................................. 8
Check Thermostat Operation ..................... 8
Final Checklist .................................. 10
OPERATION ................................... 10,11
Select Desired Temperature ..................... 10
Four-Pipe Operation ............................. 10
Two-Pipe Operation ............................. l0
Fan Operation ................................... l0
Keypad Lock .................................... 10
Clock Backup ................................... 10
Minimum Heat/Cool Temperature Difference .... 10
Single Set Point Operation ...................... 10
Dual Set Point Operation ........................ 10
Outside Air Temperature Sensor ................ 11
Locking Cover .................................. 11
Dry Contact Switch/External Control ............ 11
TROUBLESHOOTING ............................ 11
SAFETY CONSIDERATIONS
Read and follow manufacturer instructions carelhlly. Fol-
low all local electrical codes during instfdlation. All wiring
must conform to local and natiomd electrical codes. Improper
wiring or installation may dmnage thermostat.
Recognize safety information. This is the safety alert sym-
bol z_. When the safety alert symbol is present on equipment
or in the instruction manual, be alert to the potential for person-
al injury.
Understand the signal words DANGER, WARNING find
CAUTION. These words me used with the safety fdert symbol.
DANGER identifies the most serious hazards which will result
in severe personal injury or death. WARNING signifies a haz-
ard which could result in pel_onal injury or death. CAUTION
is used to identify unsafe practices which would result in minor
pel_onal injury or property dmnage.
GENERAL
The fan coil programmable thermostats are wall-mounted or
unit-mounted, low-voltage thermostats which maintfdn room
temperatme by controlling the operation of a fan coil unit.
Separate heating and cooling set points, auto-changeover
capability, 2-pipe or 4-pipe configurability, and single or dufd
set point options fdlow for greater flexibility.
The fllermostats are normally wall-mounted for 42C and
42D fan coil units. For 42S and 42V fan coil units, the thermo-
stat is mounted on the fan coil unit or inside the fan coil unit on
a junction box. For 42S and 42V fan coil units, the thermostat
may also be remote w fall-mounted, if desired.
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 rMmem-
ory stores configuration settings for an unlimited mnount of
time while the clock continues to run for fit least 48 hours.
The thermostat can be configured to accept several different
equipment configurations, including 2-pipe or 4-pipe operation.
The temperature display range of the themtostat is 35 to
99 F (2 to 36 C).
NOTE: The thermostat is factory-configured for use in 4-pipe
applications. The advanced setup must be performed to config-
ure the thermostat for use with 2-pipe applications.
INSTALLATION
Select Thermostat Location
-- The thermostat should
be mounted:
• approximately 5 ft from the floor
• close to or in a frequently used room, preferably on fin
inside partitioning wall
• on a section of wall without pipes or ductwork
• where temperature operating limits m'e within 32 to 122 F
(0 ° to 50 C)
• where humidity operating range is within 0 to 95% relative
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 leading
• close to or in dilect fdfflow from supply registers or return-
air grilles
• in meas wiflt poor air circulation (such as behind a door or
in an alcove)
Install Thermostat
Before installing themtostat, turn off all power to the unit.
There may be more than one power disconnect. Electrical
shock can cause injury or death.
1. Turn off all power to fan coil unit.
2. ff an existing thermostat is being replaced:
a. Remove existing thermostat from the wall or unit.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 14 PC 111 Catalog No 533-30020 Printed in U.S,A, Form 33CS-56SI Pg 1 11-04 Replaces: 33CS-52SI
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Tab 11a 13a