Carrier 33CS Installation And Operating Instructions Manual

Also see for 33CS: Owner's manual Owner's manual Operating guide Installation, start-up, and operating instructions Installation, start-up, and operating instructions

Contents

Carrier 33CS Installation And Operating Instructions Manual Manual pdf 10 page image

108. Press the UP ARROW button until the heating set point is10 F (6 C) higher than the current room temperature.Electric strip heating will be available if cold water issensed by the changeover sensor. The strip heater willenergize and the fan will run.9. Press the Mode button repeatedly until the OFF icon ap-pears. Both valves should be closed and the strip heat andfan should be off.10. If heating, cooling, or fan do not operate properly, checkwiring and consult Table 5.Final Checklist1. Put away tools and instruments. Clean up debris andpackaging.2. Review Owner’s Guide with occupant or owner.3. Leave the manuals with owner.OPERATIONSelect Desired Temperature — The UP and DOWNARROW buttons are used to adjust the heating and cooling setpoints. Pressing the UP and DOWN ARROW buttons in Automode will adjust both the heating and cooling set points. Press-ing the UP and DOWN ARROW buttons in either Heat orCool mode will adjust only the heating or cooling set point.NOTE: If the Single Set Point mode is configured, there willbe only one set point for both heating and cooling.Four-Pipe Operation — The Mode button selects theoperating mode of the thermostat. If OFF is selected, thethermostat will not enter Heating or Cooling mode. If HEAT isselected, the thermostat will only enter Heating mode (if theroom temperature is below the heating set point). If COOL isselected, the thermostat will only enter Cooling mode (if theroom temperature is above the cooling set point). If AUTO isselected, the thermostat will enter Heating or Cooling modebased on the room temperature and the heating and cooling setpoints. If Program On is selected, the thermostat will follow theOccupied schedule.Two-Pipe OperationHEAT ONLY — When the thermostat is configured for HeatOnly operation, only Heat, Program On and Off modes can beselected.COOL ONLY — When the thermostat is configured for CoolOnly operation, only Cool, Program On and Off modes can beselected.HEAT/COOL WITH CHANGEOVER SENSOR — Whenthe thermostat is configured for operation with a changeoversensor, all modes are available for operation. If the watertemperature is changed during the year, the thermostat willautomatically lock out the incorrect mode. Heat or Cool modesmay not be available, depending on water temperature.TOTAL OR AUXILIARY ELECTRIC HEAT — The Modebutton selects the operating mode of the thermostat. If OFF isselected, the thermostat will not enter Heating or Coolingmode.If HEAT is selected, the thermostat will only enter Heatingmode (if room temperature is below the heating set point). Fortotal electric heat, a call for heat will activate the electric heater.For auxiliary electric heat, a call for heat will either activate theelectric heater (if chilled water is in the coil), or open the coilvalve (if hot water is in the coil).If COOL is selected, the thermostat will only enter Coolingmode (if room temperature is above the cooling set point andchilled water is in the coil).If AUTO is selected, the thermostat will enter Heating orCooling mode based on the room temperature and the heatingand cooling set points.Fan Operation — The Fan button is used to select fanoperation. When only the Fan icon is shown, the fan is in “Au-to” mode and will run continuously (unless thermostat mode isset to OFF or thermostat is in unoccupied mode and heating orcooling are not active). The thermostat will increase or de-crease the fan speed based on temperature demand.Fan operation can also be set to always run at Low, Medi-um, or High speeds. To set fan operation at Low speed, pressthe Fan button until one bar is shown next to the Fan icon. Thefan will run continuously at Low speed (unless thermostatmode is set to OFF or thermostat is in unoccupied mode andheating or cooling are not active).To set fan operation at Medium speed, press the Fan buttonuntil two bars are shown next to the Fan icon. The fan will runcontinuously at Medium speed (unless thermostat mode is setto OFF or thermostat is in unoccupied mode and heating orcooling are not active).To set fan operation at High speed, press the Fan buttonuntil three bars are shown next to the Fan icon. The fan will runcontinuously at High speed (unless thermostat mode is set toOFF or thermostat is in unoccupied mode and heating or cool-ing are not active).Keypad Lock — To prevent unauthorized use of the ther-mostat, the front panel buttons can be disabled. To disable orlock the keypad, press and hold the Mode button. Whileholding down the Mode button, press the UP and DOWNARROW buttons simultaneously. The “Locked” icon will ap-pear on the display.The thermostat is unlocked by performing the same proce-dure. Press and hold the Mode button. While holding down theMode button, press the UP and DOWN ARROW buttonssimultaneously. The “Locked” icon will be removed from thedisplay.Clock Backup — In the event of a power loss, the ther-mostat internal clock will continue to keep proper time for aminimum of 48 hours without external power or batteries.Minimum Heat/Cool Temperature Difference —The heating and cooling set points will not be allowed to be setany closer to each other than the value set in Advanced setupStep 9. The minimum temperature difference is enforced dur-ing Auto mode and Program On operation.Single Set Point Operation — When the thermostatis configured for single set point operation, the display on thethermostat will change. Instead of displaying current roomtemperature, the large number shown will be the user set point.This set point is used for both heating and cooling.To prevent short cycling in single set point mode, it isrecommended that the deadband be set to a minimum of 2.Press and hold the Mode button for 2 seconds to displaythe room temperature. Press any button to return to the normaldisplay.Dual Set Point Operation — When the thermostat isconfigured for dual set point operation, there are separate heatand cool set points. The adjustable set point range is 35 to 99 F(2 to 36 C). When the thermostat is in Heat or Cool mode, theset points can be adjusted to any temperature within the operat-ing range.When the thermostat is in Auto mode, the thermostat willnot allow the Cool set point to be lower than the Heat set point.The thermostat will also use the programmed Deadband value(Advanced Setup Step 8) to determine the minimum differencebetween the Heat and Cool set points. If the Deadband is set for6 degrees, the Cool set point cannot be set within 6 F of theHeat set point.When entering Auto mode from Heat or Cool modes, theHeat and Cool set points will remain spread apart by the sameamount when the set points are adjusted. For example, if the

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