Carrier Comfort Pro 33CSCNACHP-01 User Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53330027-01 Printed in U.S.A. Form 33CS-75SI Pg 1 7-13 Replaces: 33CS-70SI
Installation Instructions
Part Number 33CSCNACHP-01
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PACKAGE CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . .1,2
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Thermostat Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2,3
CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Entering and Exiting Configuration Mode . . . . . . . . 3
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Exiting Configuration Mode . . . . . . . . . . . . . . . . . . . . . . 6
SYSTEM START-UP AND CHECKOUT . . . . . . . . . . . . 6
Installer Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Terminating Installer Test . . . . . . . . . . . . . . . . . . . . . . . . 6
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6,7
Mode Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fan Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Set Temperature Selection . . . . . . . . . . . . . . . . . . . . . . . 6
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Display Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Sensor Temperature Display. . . . . . . . . . . . . 7
Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Five-Minute Compressor Timeguard . . . . . . . . . . . . . 7
Minimum On Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cycle Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Staging Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Space Temperature Sensor Failure. . . . . . . . . . . . . . . 7
Fan Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Memory Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Equipment Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
THERMOSTAT CONFIGURATION RECORD . . . . CL-1
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. Improper
wiring or installation may damage thermostat.
Recognize safety information. This is the safety alert sym-
bol . 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, and
CAUTION. These words are used with the safety alert 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 personal injury or death. CAUTION
is used to identify unsafe practices which would result in minor
personal injury or property damage.
GENERAL
Carrier’s Comfort Pro non-programmable thermostats are
wall-mounted, low-voltage thermostats that maintain room
temperature by controlling the operation of a heating and/or air
conditioning system (Fig. 1). This thermostat can be used with
a heat pump, air conditioner or water source heat pump opera-
tion. A variety of features are provided including battery opera-
tion, separate heating and cooling set points, auto changeover,
keypad lockout, backlighting, and built-in installer test.
This Installation Instruction covers installation, configura-
tion, and start-up of the Comfort Pro non-programmable ther-
mostat. For operational details, consult the Owner's Manual for
this specific thermostat.
PACKAGE CONTENTS
1 — Thermostat
1 — Backplate (mounting base)
2 — Screws and anchors
INSTALLATION CONSIDERATIONS
Power —
The thermostat will obtain full operating power
one of two ways: full 24 volt AC (50/60 Hz) power via the Rc/
Rh and C terminals or two AA alkaline batteries. The 24 vac
operation is preferred, if available. Battery operation is used
when there are not enough wires to support 24 vac operation.
IMPORTANT: Read entire instruction before installing
the thermostat.
°
F
actual temp
set at
mode
fan
Fig. 1 — Comfort Pro Non-Programmable
Commercial Thermostat
a33-9224
Comfort™ Pro
Non-Programmable
Commercial Thermostat

Carrier Comfort Pro 33CSCNACHP-01 Specifications

General

Wi-Fi Capable	No
Color	White
Programmability	Programmable
Display	Yes
Power Source	24 VAC

Summary

Safety Considerations

General Safety Instructions

Follow all manufacturer instructions and local electrical codes for safe installation and wiring practices.

Installation Considerations

Thermostat Power Requirements

Details on obtaining operating power via 24 VAC or AA batteries.

Wiring Specifications

Guidance on wire length, gauge, and connection practices.

Thermostat Location Guidelines

Recommendations for optimal placement and locations to avoid.

Installation Procedure

Power Disconnection and Safety

Instructions to turn off all power and identify potential hazards before installation.

Removing Old Thermostat

Steps for disconnecting and recording wires from an existing thermostat.

Mounting the Backplate

Procedure for routing wires, leveling, and securing the backplate to the wall.

Wire Preparation and Connection

Guidance on wire stripping, routing, and connecting to terminals.

Configuration Options

Entering and Exiting Configuration Mode

Steps to access and navigate the installer configuration menu.

Equipment Type Selection (Option 01)

Configures the thermostat for specific HVAC system types (HP, AC, etc.).

Remote Sensor Configuration (Option 02)

Setting up remote sensors for temperature averaging or sensing.

English/Metric Selection (Option 03)

Configures the thermostat display between Fahrenheit and Celsius.

Fan Operation with Heat (Option 04)

Determines if the fan runs when the W terminal is energized.

Space Temperature Sensing (Option 05)

Selects the sensor source for space temperature measurement.

Equipment DDC Controller Setting (Option 07)

Enables or disables internal timers for DDC controlled equipment.

Reversing Valve Configuration (Option 10)

Sets the O/B terminal for heating or cooling energization on heat pumps.

Deadband Setting (Option 11)

Defines the temperature differential between heating and cooling set points.

Space Temperature Display Offset (Option 13)

Adjusts the displayed space temperature reading for calibration.

Auto Mode Availability (Option 15)

Enables or disables automatic changeover between heating and cooling.

Maximum Cycles Per Hour (Option 16)

Limits the number of equipment cycles per hour to prevent wear.

Time Between Equipment Stages (Option 17)

Sets the minimum time between stage changes for equipment operation.

Backlight Configuration (Option 18)

Configures backlight behavior for display visibility.

Outdoor Air Temperature Offset (Option 20)

Calibrates the outdoor air temperature sensor reading.

Keypad Lockout with Passcode (Option 21)

Enables keypad lockout with a user-defined passcode for security.

Minimum Cooling Set Point (Option 26)

Defines the lowest allowable cooling set point.

Maximum Heating Set Point (Option 27)

Defines the highest allowable heating set point.

Emergency Heat Mode Availability (Option 35)

Enables or disables the emergency heat mode selection.

Temperature Display Selection (Option 39)

Chooses to display set point or space temperature on the main screen.

Reset to Factory Defaults (Option 99)

Restores the thermostat to its original factory settings.

Operation Modes and Timers

Mode Selection

How to cycle through and select operating modes (Off, Heat, Cool, Auto).

Fan Selection

Switching between continuous fan operation and auto fan mode.

Set Temperature Selection

Adjusting heating and cooling set points, respecting configured limits.

Thermostat Timers Explained

Details on compressor timeguard, minimum on timer, and cycle timers.

Troubleshooting System Errors

Space Temperature Sensor Failure

Interpreting '--' display for sensor issues and control behavior.

Fan Failure Error (E7)

Understanding the E7 error message for fan operation issues.

Memory Failure Error (E4)

Identifying an internal memory failure requiring thermostat replacement.

Equipment Outputs Table

Reference table for active outputs based on configuration and mode.

Wiring Diagrams

Thermostat Wiring for 42B Motor Controls

Diagrams for single-phase, three-phase, and electric heater applications.

Rooftop Unit Wiring

Specific wiring diagrams for 48/50HC, 48/50TC, and 48/50LC04-06 units.

Heat Pump Unit Wiring

Wiring configurations for various heat pump units like 50EJQ and 50HJQ.

Water Source Heat Pump Wiring (50VS)

Specific wiring diagram for 50VS water source heat pump units.

Rooftop Unit Wiring (50HCQ, TCQ)

Wiring diagrams for 50HCQ and TCQ rooftop units.

Heat Pump Unit Wiring (50HJQ014,016)

Wiring diagrams for 50HJQ014 and 016 heat pump units.

Commercial Split System Wiring (38ARD)

Wiring for 38ARD commercial split system units.

Split System Wiring (38ARQ/40RMQ)

Wiring for 38ARQ/40RMQ series split system units.

Commercial Split System Wiring (38AU)

Wiring for 38AU commercial split system units with 40RUA air handler.

Packaged Air-Handler Units Wiring (40RU/38RU)

Wiring for 40RU/38RU packaged air-handler units.

Outdoor Air and Remote Room Temperature Sensors Wiring

Diagrams for connecting outdoor air and remote room temperature sensors.

Space Temperature Sensor Averaging Wiring (9 Sensor)

Wiring for 9-sensor application of space temperature averaging.

Thermostat Configuration Record

Installer Setup Information

Fields for recording Part Number, Date, and Hole Sealing status.

Mode and Set Point Settings

Section to log the selected operating mode and set points.

Configuration Options Log

Space to record user settings for each configuration option.