Accepts the HUMIDITY MODULE HUMIDITY MODULE Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage Electric Cooling & 3 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat. TOTALINE Signature Commercial Systems & Services Carrier Corporation 08/05...
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(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 P374-2900 Tested to Comply with FCC Standards FOR HOME OR OFFICE USE...
Table of Contents Table of Contents TOTALINE Preparation Remove & Replace the Old Thermostat Configuring the MISC Outputs Wire Connections Sample Wiring Diagrams Test Operation Calibrating the Thermostat Sensors TroubleShooting Page...
SECTION 1 Preparation Preparation TOTALINE 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 &...
SECTION 2 Remove & Replace the Old Thermostat Remove & Replace the Old Thermostat TOTALINE 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.
SECTION 3 Configuring the MISC Outputs Configuring the MISC Outputs TOTALINE Section 3 Contents: Configuring the Jumpers..3.2 Explanation of Jumper Settings........3.3 Page 3.1...
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TOTALINE 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 six choices available.
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TOTALINE 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...
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TOTALINE Explanation of Jumper Settings Explanation of Jumper Settings (continued) (continued) 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. HUMIDIFICATION OPERATION - SECTION 9 of the Owner’s Manual...
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TOTALINE Explanation of Jumper Settings Explanation of Jumper Settings (continued) (continued) ECON JUMPER SETTING If the jumper for MISC2 and MISC3 is set to ECON, the corresponding MISC screw terminal on the backplate will be connected to an economizer. ECONOMIZER OPERATION - If your HVAC unit is equipped with an...
SECTION 4 Wire Connections Wire Connections TOTALINE 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...
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TOTALINE Wired Remote Sensor and Time Clock W1/O/B MISC1 2 conductor 18 gauge unshielded cable from MISC3 MISC2 the thermostat to the RS+5 remote sensor. CKGND RSGND RS-GND Optional Remote RS+V Sensor DRY CONTACT SWITCH - The terminals are ‘normally open’ (may be programmed for normally closed operation, see page 16.2 of the Owner’s Manual).
SECTION 6 Test Operation Test Operation TOTALINE 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;...
SECTION 7 Calibrating the Thermostat Sensors Calibrating the Thermostat Sensors TOTALINE 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.
SECTION 8 TroubleShooting TroubleShooting TOTALINE 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.
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TroubleShooting TroubleShooting TOTALINE SYMPTOM: When controlling a residential heat pump, and asking for cooling, the heat comes on. CAUSE: The thermostat reversing valve jumper is set for “b”. REMEDY: Set the reversing valve jumper for “O”. See pages 5.4 and 5.5.