Installation, Start-Up, and

Operating Instructions

Part Number 33CSPTN-01

CONTENTS

Page

SAFETY CONSIDERATIONS ...................1

GENERAL ...................................1

INSTALLATION .............................1-10

Step 1 — Thermostat Location ................1

Step 2 — Set DIP Switches ...................1

Step 3 — Install Thermostat ..................2

Step 4 — Space Temperature Averaging .......2

Step 5 — Set Thermostat Conﬁguration .......2

Step 6 — Check Thermostat Operation ........9

Step 7 — Select Thermostat Operation

Settings ....................................9

Step 8 — Set Current Time ...................9

Step 9 — Set Current Day ....................9

Step 10 — Programming Thermostat

Schedules .................................10

Step 11 — Final Checklist ...................10

OPERATION ...............................11,12

Hold, Fan, and Mode Botton Operation .......11

Thermostat Output Assignments .............11

Five-Minute Compressor Short-Cycle

Protection .................................11

Fifteen-Minute Staging Timer ................11

Two-Minute Minimum On Time ...............11

Heating (Cooling Set Point Minimum

Difference) .................................11

Auto-Changeover Timer .....................11

Power-On Thermostat Check ................11

Error Codes ................................11

Smart Recovery (Heating Mode Only) ........12

TROUBLESHOOTING ........................12

IMPORTANT: Read entire instructions before starting

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.

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 for energy savings.

All thermostats allow up to 4 time/temperature settings to

be programmed per 24-hr period. Each thermostat stores pro-

grams for 7 independent days. Batteries are not required. Dur-

ing power interruption the internal memory stores comfort

schedules for an unlimited time while the clock continues to

run for at least 72 hours.

The thermostat can be conﬁgured to accept several dif-

ferent equipment conﬁgurations, from single-stage heat-

ing and cooling to 3 stages of heating (heat pump only) and

2 stages of cooling. The thermostat comes factory conﬁg-

ured for one stage of cooling and one stage of heating.

INSTALLATION

Step 1 — Thermostat Location —

The thermostat

should 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

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)

• 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

Step 2 — Set DIP Switches — There are 4 small

DIP (Dual In-line Package) switches on the back of the cir-

cuit board which must be conﬁgured by the installer. The

ON position is indicated by small letters on the switch. Ig-

nore the numbers (1-4) on the switch. The switch designa-

tion (A-D) is printed on a sticker next to the switch. To change

a switch position, use the corner of a small screwdriver to

slide the switch ON or OFF. Set the DIP switches before

installing the thermostat.

33CS

Commercial Thermostat

Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations.

Book 1 4

Tab 11a 13a

PC 111 Catalog No. 533-313 Printed in U.S.A. Form 33CS-8SI Pg 1 4-97 Replaces: 33CS-6SI

Carrier 33CS - Thermostat Wiring Diagrams

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