Carrier 33CS420-01 Installation Instructions Manual
  1. Manuals
  2. Brands
  3. Carrier Manuals
  4. Thermostat
  5. 33CS420-01
  6. Installation instructions manual

Carrier 33CS420-01 Installation Instructions Manual

7-day programmable digital thermostat
Hide thumbs Also See for 33CS420-01:

Advertisement

Table of Contents

See also: Owner's Manual
Enlarged version
INSTALLATION
INSTALLATION
INSTRUCTIONS
INSTRUCTIONS
7-DAY
7-DAY
PROGRAMMABLE
PROGRAMMABLE
&
HEAT
HEAT
COOL
PUMP
3 Configurable Outputs
3 Configurable Outputs
Control up to 3 Heat &
Control up to 3 Heat &
2 Cool Stages
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
OPTIONAL
OPTIONAL
Accepts the
Accepts the
Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage
Electric Cooling & 3 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat.
Carrier Corporation 04/06
COMMERCIAL
COMMERCIAL
THERMOSTAT
THERMOSTAT
P/N P/N 33CS420-01
33CS420-01
D
D
IGITAL
IGITAL
T
T
HERMOSTAT
HERMOSTAT
74
I2:00
Pm
Su
C
OOL
AUTO
72
H
EAT
Accepts EZ Programmer
Accepts Optional Humidity Module:
Controls Humidification,
Dehumidification and Reheat
Accepts Optional IR Remote Control
HUMIDITY MODULE
HUMIDITY MODULE

Advertisement

Table of Contents
loading

Related Manuals for Carrier 33CS420-01

Summary of Contents for Carrier 33CS420-01

  • Page 1: Installation Instructions

    INSTALLATION INSTALLATION COMMERCIAL COMMERCIAL THERMOSTAT THERMOSTAT INSTRUCTIONS INSTRUCTIONS P/N P/N 33CS420-01 33CS420-01 IGITAL IGITAL HERMOSTAT HERMOSTAT 7-DAY 7-DAY PROGRAMMABLE PROGRAMMABLE & HEAT I2:00 HEAT COOL PUMP AUTO 3 Configurable Outputs 3 Configurable Outputs Control up to 3 Heat & Control up to 3 Heat &...
  • Page 2 (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Thermostat 33CS420-01 Tested to Comply with FCC Standards FOR HOME OR OFFICE USE...

  • Page 4: Table Of Contents

    Table of Contents Table of Contents Carrier Preparation Remove & Replace the Old Thermostat Configuring the MISC Outputs Wire Connections Sample Wiring Diagrams Test Operation Calibrating the Thermostat Sensors TroubleShooting Page...

  • Page 5: Preparation

    SECTION 1 Preparation Preparation Carrier 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. Assemble tools Flat Blade Wire cutter Screwdriver &...

  • Page 6: Remove & Replace The Old Thermostat

    SECTION 2 Remove & Replace the Old Thermostat Remove & Replace the Old Thermostat Carrier 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.

  • Page 7: Configuring The Misc Outputs

    SECTION 3 Configuring the MISC Outputs Configuring the MISC Outputs Carrier Section 3 Contents: Configuring the Jumpers..3.2 Explanation of Jumper Settings........3.3 Page 3.1...
  • Page 8 Carrier Configuring the Jumpers Configuring the Jumpers 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.
  • Page 9 Carrier Explanation of Jumper Settings Explanation of Jumper Settings 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. W3 MULTI-STAGE OPERATION EXPLAINED - SECTION 13 of the Owner’s...
  • Page 10 Carrier Explanation of Jumper Settings Explanation of Jumper Settings (continued) (continued) DEHUM JUMPER SETTING 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.
  • Page 11 Carrier Explanation of Jumper Settings Explanation of Jumper Settings (continued) (continued) Y2 JUMPER SETTING If the jumper for MISC1 is set to Y2 the MISC1 screw terminal on the backplate will control a second stage of cooling. Y2 OPERATION - SECTION 13 of the Owner’s Manual Control up to two Cool stages.

  • Page 12: Wire Connections

    SECTION 4 Wire Connections Wire Connections Carrier If the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart below, or the wiring diagrams that follow. Wire from the Install on the...

  • Page 13: Sample Wiring Diagrams

    SECTION 5 Sample Wiring Diagrams Sample Wiring Diagrams Carrier Section 5 Contents: HVAC Equipment Wiring....5.2 MISC1, MISC2, and MISC3 Wiring........5.6 Installing the Outside Sensor...5.8 Page 5.1...
  • Page 14 Carrier 6 Wire, 1 Stage Cooling, 1 Stage Heat Residential & Commercial 1 Stage Cooling, Commercial Heat Pump 1 Stage Cooling with 1st Stage Gas Heat with 2 Stage Heat W1/O/B MISC1 MISC3 MISC2 RS+5 RSGND ELEC 6 Conductor 18 gauge...
  • Page 15 Carrier 6 Wire, 1 Stage Cooling, 1 Stage Heat Residential & Commercial 1 Stage Cooling, with 1st Stage Electric Heat W1/O/B MISC1 MISC3 MISC2 RS+5 RSGND ELEC 6 Conductor 18 gauge ELEC unshielded cable from the DEHUM thermostat to the equipment.
  • Page 16 Carrier 6 Wire, 1 Stage Cooling, 2 Stage Heat Residential Heat Pump with O Reversing Valve 1 Stage Cooling, with 2 Stage Heat W1/O/B MISC1 MISC3 MISC2 RS+5 RSGND ELEC 6 Conductor 18 gauge ELEC unshielded cable from the DEHUM thermostat to the equipment.
  • Page 17 Carrier 6 Wire, 1 Stage Cooling, 2 Stage Heat Residential Heat Pump with b Reversing Valve 1 Stage Cooling, with 2 Stage Heat W1/O/B MISC1 MISC3 MISC2 RS+5 RSGND ELEC 6 Conductor 18 gauge ELEC unshielded cable from the DEHUM thermostat to the equipment.
  • Page 18 Carrier Adding a 2nd Stage of Cooling (MISC1) and a 3rd Stage of Heating (MISC3) W1/O/B MISC1 MISC3 MISC2 RS+5 RSGND ELEC DEHUM (MISC1 MISC3 MISC2 MISC1 ONLY) MISC1 MISC2 MISC3 DEHUM RS+5 INSTALL HUMIDITY MODULE WITH SENSING RSGND ELEMENT OUTWARD...
  • Page 19 Carrier Adding a Humidification System (MISC1) and Dehumidification System (MISC2) W1/O/B MISC1 MISC3 MISC2 RS+5 RSGND ELEC PROG NO HUM DEHUM (MISC1 MISC3 MISC2 MISC1 ONLY) MISC1 MISC2 MISC3 DEHUM RS+5 INSTALL HUMIDITY MODULE WITH SENSING RSGND ELEMENT OUTWARD Humidity Module...
  • Page 20 Carrier Installing the Outside Sensor Installing the Outside Sensor One wired or wireless remote sensor may be installed to read the outside temperature (RS2). The wired sensor can be connected to the thermostat with up to 150’ of 18 ga., 300’ of 20 ga., or 450’ of 22 ga.

  • Page 21: Test Operation

    SECTION 6 Test Operation Test Operation Carrier Turn the power on to the Heating/Air Conditioning system. Press the MODE button repeatedly until the HEAT icon appears on the display. Press the UP or DOWN buttons until the set temperature is 10 degrees above room temperature; the furnace should turn on.

  • Page 22: Calibrating The Thermostat Sensors

    SECTION 7 Calibrating the Thermostat Sensors Calibrating the Thermostat Sensors Carrier Under normal circumstances it will not be necessary to adjust the calibration of the temperature and humidity sensors. If calibration is required, please contact a trained HVAC technician to correctly perform the following procedure.

  • Page 23: Troubleshooting

    SECTION 8 TroubleShooting TroubleShooting Carrier SYMPTOM: The air conditioning does not attempt to turn on. CAUSE: The compressor timer lockout may prevent the air conditioner from turning on, for a period of time. REMEDY: Consult the Owner's Manual in the Setup section to defeat the cycles per hour and compressor timeguard.

Table of Contents