Carrier Programmable Dual Fuel Thermostats Installation, Start-up, And Operating Instructions Manual

Also see for Programmable Dual Fuel Thermostats: Installation, start-up, and operating instructions

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Carrier Programmable Dual Fuel Thermostats Installation, Start-up, And Operating Instructions Manual Manual pdf 4 page image

Switch B - Select Smart or Normal Setback RecoverySelects between normal and smart recovery from setback. Normalrecovery changes to the new set point at the programmed time.Smart recovery, which is active in heating mode only, starts earlierand adjusts the set point slowly so that room temperature willarrive at the programmed temperature at the programmed time.TO SET:OFF—for smart recovery. This is the factory default.ON—for normal recovery.Switch C - Select Enable/Disable of Low-Ambient CoolingUse to allow or prevent cooling operation below an outdoortemperature of 55°F. Prevention of cooling below 55°F adds tocompressor reliability. If outdoor temperature sensor fails or isdisconnected, cooling is allowed regardless of switch setting.TO SET:OFF—cooling is disabled at outdoor temperatures below 55°F.ON—cooling is enabled at outdoor temperatures below 55°F.Switch D - Select Single-Speed or 2-Speed HPUse this switch to tell dual fuel thermostat whether it is controllinga single- or 2-speed HP. It must be set properly.TO SET:OFF—for single-speed HP.ON—for 2-speed HP.Step 3—Install ThermostatBefore installing thermostat, turn off all power to unit. Theremay be more than 1 power disconnect. Electrical shock cancause personal injury or death.1. Turn OFF all power to unit.2. If an existing thermostat is being replaced:a. Remove existing thermostat from wall.b. Disconnect wires from existing thermostat, 1 at a time. Becareful not to allow wires to fall back into the wall.c. As each wire is disconnected, record wire color andterminal marking.d. Discard or recycle old thermostat.NOTE: Mercury is a hazardous waste and MUST be disposed ofproperly.3. Open thermostat rear door (mounting base) to expose mount-ing holes. The base can be removed to simplify mounting.Snap apart carefully at hinge to separate mounting base fromremainder of thermostat.4. Route thermostat wires through large hole in mounting base.Level mounting base against wall (for aesthetic valueonly—thermostat need not be leveled for proper operation)and mark wall through 2 mounting holes.5. Drill two 3/16-in. mounting holes in wall where marked.6. Secure mounting base to wall with 2 screws and anchorsprovided, (additional anchoring holes available for moresecure mounting if needed) making sure all wires extendthrough hole in mounting base.7. Adjust length and routing of each wire to reach properterminal and connector block on mounting base with 1/4 in. ofextra wire. Strip only 1/4 in. of insulation from each wire toprevent adjacent wires from shorting together when con-nected.8. Match and connect equipment wires to proper terminals of theconnector blocks. (See Fig. 2 through 9.) Both R and C mustbe connected for proper thermostat operation.Improper wiring or installation may damage the thermostat.Check to make sure wiring is correct before proceeding withinstallation or turning on unit.9. Push any excess wire into wall and against mounting base.Seal hole in wall to prevent air leaks. Leaks can affectoperation.10. Snap hinge back together.11. Close thermostat assembly making sure pins on back of circuitboard align with sockets in connector.12. If this is a replacement installation, be sure to remove theinterface control which may have been used to interface astandard thermostat to a dual fuel installation. All the wires(with the exception of the outdoor sensor S1 and S2 wires)from the thermostat go directly to the furnace. The interfacecontrol must be removed and not used.13. Turn ON power to unit.On power up, display shows dF or d2 for a few seconds to indicatethat it is a dual fuel thermostat. (See page 11.)Step 4—Set Thermostat ConfigurationConfiguration options, like DIP switch settings, are intended to beselected at installation and normally are not modified by thehomeowner. These options are not discussed in the Homeowner’sManual and therefore must be selected as part of the installation.A special procedure allows entry into the configuration mode.While in the configuration mode, 7 selections can be made. Adescription of each of these and how to use the configuration modefollows.CONFIGURATION OPTIONS—SUMMARY:Option 01—Anticipator adjustmentOption 02—Clean filter timer adjustmentsOption 03—Fahrenheit or Celsius operationOption 04—07—Not applicableOption 08—Auxiliary heat lockout settingOption 09—10—Not applicableOption 11—Balance point settingOption 12—Not applicableOption 13—Room temperature offset adjustmentOption 14—Not applicableOption 15—Enable AUTO modeTO ENTER THE CONFIGURATION MODE:Press and hold FAN button for approximately 10 sec until COOLset point display indicates a flashing 01. The thermostat is now inthe configuration mode. It will automatically exit this mode if nobutton is pressed for 3 minutes. Pressing END button will exit theconfiguration mode immediately.WHILE IN THE CONFIGURATION MODE:The upper small (COOL set point) display indicates the selectedoption number and the large display indicates the selection madewithin that option. One of these will be flashing. The up and downbuttons are used both to move between the available options and tomake selection for each option. When the option number (smalldisplay) is flashing, the up and down buttons adjust it, movingbetween the available option numbers. After the desired optionnumber has been selected, press SET TIME/TEMP button once.The large disply will now flash, indicating that the up and downbuttons now control the available choices within that option. Each4→→