Carrier 33CS420-01 Manual de usuario
7-DAY
7-DAY
PROGRAMMABLE
PROGRAMMABLE
DIGITAL
DIGITAL
THERMOSTAT
THERMOSTAT
HEAT
PUMP
Accepts EZ Programmer
Accepts Optional Humidity Module:
Controls Humidification,
Dehumidification and Reheat
Accepts Optional IR Remote Control
3 Configurable Outputs
Control up to 3 Heat &
2 Cool Stages
Adjustable 2nd & 3rd Stage
Timers & Deadbands
Backlit Display & Button
Legends
Aux Heat Indicator
Set Point Limiting
Outdoor Sensor Ready with
High/Low Readouts for the Day
3 Configurable Outputs
Control up to 3 Heat &
2 Cool Stages
Carrier Corporation 04/06
Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage
Electric Cooling & 3 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat.
INSTALLATION
INSTRUCTIONS
INSTALLATION
INSTRUCTIONS
OPTIONAL
HUMIDITY MODULE
OPTIONAL
HUMIDITY MODULE
Accepts the
Accepts the
COMMERCIALCOMMERCIAL
THERMOSTATTHERMOSTAT
P/NP/N
33CS420-0133CS420-01
AUTO
I2:00
Su
Pm
HEAT
COOL
72
74
HEAT
COOL
&
Page i
NOTE: Due to variations in environmental conditions, it is not
always possible to achieve the desired humidification or
dehumidification setpoint.
MISC3 MISC3
OK
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Follow the Installation Instructions before proceeding.
Set the thermostat mode to “OFF” prior to changing
settings in setup or restoring Factory Defaults.
NEVER PUT MORE THAN ONE
JUMPER ON THE SAME MISC
JUMPER BLOCK!
THIS MAY DAMAGE YOUR
THERMOSTAT.
CAUTION
C
c
F
FOR HOME OR OFFICE USE
Tested to Comply
with FCC Standards
Thermostat 33CS420-01
4Z95
CAUTION
Carrier
8
2
1
3
6
7
4
5
Preparation
Remove & Replace the
Old Thermostat
Configuring the MISC
Outputs
Sample Wiring
Diagrams
Calibrating the
Thermostat Sensors
Test Operation
TroubleShooting
Page iii
Table of ContentsTable of Contents
Wire Connections
Carrier
Page 1.1
SECTION 1
PreparationPreparation
1
Assemble tools
Flat Blade
Screwdriver
Wire cutter
& Stripper
Make sure your Heater/Air Conditioner is working
properly before beginning installation of the
thermostat.
Carefully unpack the thermostat. Save the screws,
bracket, and instructions.
Turn off the power to the Heating/Air Conditioning
system at the main fuse panel. Most residential
systems have a separate breaker for disconnecting
power to the furnace.
Proper installation of the thermostat will be
accomplished by following these step by step
instructions. If you are unsure about any of these
steps, call a qualified technician for assistance.
Carrier
Page 2.1
SECTION 2
Remove & Replace the Old ThermostatRemove & Replace the Old Thermostat
2
Remove the cover of the old thermostat.
If it does not come off easily check for screws.
Loosen the screws holding the thermostat
base or subbase to the wall, and lift away.
Disconnect the wires from the old thermostat.
Tape the ends of the wires as you disconnect
them, and mark them with the letter of the
terminal for easy reconnection to the new
thermostat.
Keep the old thermostat for reference purposes
until your new thermostat is functioning properly.
Carrier
Carrier
3
Page 3.1
Section 3 Contents:
Configuring the Jumpers........3.2
Explanation of Jumper
Settings..................................3.3
SECTION 3
Configuring the MISC OutputsConfiguring the MISC Outputs
Carrier
3
Configuring the JumpersConfiguring the Jumpers
Page 3.2
For additional flexibility, your thermostat has three configurable
outputs. These outputs are designed to have different functions
depending on how the jumpers are set (below).
Each output, labeled MISC1, MISC2, and MISC3 may be set for one
of the four choices available.
In the diagram below, the MISC3 jumper has been set for HUM*
(humidification) operation, the MISC2 jumper has been set for
DEHUM* (dehumidification) operation, and the MISC1 jumper has
been set for Y2 (second stage cooling) operation.
NEVER PUT MORE THAN
ONE JUMPER ON THE SAME
MISC JUMPER BLOCK!
DOING SO MAY DAMAGE
YOUR THERMOSTAT AND
VOID THE WARRANTY.
W3
HUM
DEHUM
MISC3 MISC2 MISC1
Y2
(MISC1
ONLY)
CAUTION
MISC3 MISC3
OK
HP
GAS
B
O
ELEC
GAS
(FAN)
W1
Y1
G
R
C
MISC2
W2
MISC1
RS2
RSGND
MISC3
RS+5
W3
HUM
DEHUM
MISC3 MISC2 MISC1
Y2
(MISC1
ONLY)
INSTALL HUMIDITY
MODULE WITH SENSING
ELEMENT OUTWARD
HUM
NO HUM
*The Humidity Module (sold separately) must
be installed to operate a humidification
and/or dehumidification system.
1
2
4
6
8
X
Z
1
5
7
9
Y
3
Carrier
Page 3.3
3
The 3rd Stage of Heat is turned on when:
(A) The 1st and 2nd stages have been on for the time required (steps 23
and 24, page 13.6). It is adjustable from 0-60 minutes and the default
is two minutes.
(B) The temperature from the setpoint is equal to or greater than: the set-
point plus the 1st stage deadband (step #20, 13.5), plus the 2nd stage
deadband (step #21, 13.5) plus the 3rd stage deadband (step #22,
13.5). This 3rd stage deadband is adjustable from 0-10 degrees and
the default is two degrees.
W3 JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to W3, the corresponding MISC screw
terminal on the backplate will control a third stage of heat.
Explanation of Jumper SettingsExplanation of Jumper Settings
And
Heat
Setpoint
Cool
Setpoint
Deadband Deadband DeadbandDeadbandDeadband
db 1 db 1db 2 db 2db 3 (adj. 1-6 )(adj. 0-10 )(adj. 0-10 ) (adj. 0-10 )(adj. 1-6 )
1st Stage
turn on
2nd Stage
turn on
3rd Stage
turn on
1st Stage
turn on
2nd Stage
turn on
Heating
Cooling
TEMPERATURE
DECREASE INCREASE
W3 MULTI-STAGE OPERATION EXPLAINED - SECTION 13 of the Owner’s
Manual
HUMIDIFICATION OPERATION - SECTION 9 of the Owner’s Manual
If your HVAC unit is equipped with a humidification system and the Humidity
Module (sold separately) has been installed, the thermostat will provide power
to the MISC1, MISC2, or MISC3 terminal of the thermostat when the
humidity in the home falls below the humidity setpoint you have chosen.
The value for this setpoint ranges from 0% to 60%. If no humidity is desired or
if a humidification system has not been installed, set the value to OFF.
HUM JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to HUM, the corresponding MISC screw
terminal on the backplate will control a humidification system.
Carrier
Page 3.4
3
DEHUM JUMPER SETTING
Explanation of Jumper Settings (continued)Explanation of Jumper Settings (continued)
If the jumper for MISC1, MISC2, or MISC3 is set to DEHUM, the corresponding MISC screw
terminal on the backplate will be connected to the dehumidification terminal of a furnace
board.
NOTE: Not all furnaces have a dehumidification terminal.
DEHUMIDIFICATION OPERATION - SECTION 10 of the Owner’s Manual
If your HVAC unit is equipped with a dehumidification system the thermostat will
operate in one of two ways.
1) Normally Closed (NC): The thermostat will de-energize the MISC1, MISC2,
or MISC3 terminal of the thermostat (this MISC terminal is connected to the
DEHUM terminal on your furnace) to allow the fan to run in low speed when
the humidity in the home is above the dehumidify setpoint you have chosen
and there is a call for 1st stage cooling.
2) Normally Open (NO):
The thermostat will energize the MISC1, MISC2, or
MISC3 terminal of the thermostat (this MISC terminal is connected to the
DEHUM terminal on your furnace) to allow the fan to run in low speed when
the humidity in the home is above the dehumidify setpoint you have chosen
and there is a call for 1st stage cooling.
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