Carrier 50HCQ07 Installation Instructions Manual

40Table 10 — Menu Structure* (cont)LEGEND* Table 10 illustrates the complete hierarchy. Your menu parametersmay be different depending on your configuration. For example if youdo not have a DCV (CO 2 ) sensor, then none of the DCV parametersappear.† When values are displayed, pressing and holding the or buttoncauses the display to automatically increment.** N/A = Not Applicable.†† ERV Operation: When in cooling mode AND the conditions are NOTOK for economizing - the ERV terminal will be energized. In the Heat-ing mode, the ERV terminal will be energized when the OA is belowthe ERV OAT setpoint in the setpoint menu.NOTES:1. STATUS —> OCCUPIED — The factory-standard Occupancy sig-nal originates with a thermostat or other controller call for indoorfan operation at CTB terminal G. This signal passes through theCentral Terminal Board’s OCCUPIED jumper JMP1 to theECONO connector and to the W7220’s OCC input terminal. Anexternal timeclock or relay is required to implement an Occu-pancy schedule on the economizer damper position.2. STATUS —> MA TEMP, SETPOINTS —> MAT SET — The W7220menu parameters and labels include designations MA, MAT andMixed Air for the economizer cooling control sensor. On these roof-top units, the economizer control sensor is located downstream ofthe evaporator/indoor coil in the supply fan section where this sensoris designated as Supply Air Temperature (SAT) sensor.3. SETPOINTS —> DRYBLB SET — This point is not displayed if aReturn Air (differential) temperature sensor or an Outdoor Air enthal-py sensor is connected.4. SYSTEM SETUP parameters must be configured as noted for 2-Speed unit operation:EQUIPMENT = CONVAUX2 I = WFAN SPEED = 2SPEEDFor damper minimum position settings and checkout menureadings, see Table 11. See Tables 12-19 for dry bulb and en-thalpy sequence of operation.Table 11 — Damper Minimum Position Settings and Readings on Checkout MenuMENU PARAMETERPARAMETERDEFAULTVALUEPARAMETERRANGE ANDINCREMENT† NOTESALARMS(CONT)SHUTDOWN ACTIVE N/A N/A AUX2 IN is programmed for SHUTDOWN and 24 V has been applied to AUX2IN terminal.DMP CAL RUNNING N/A N/A DAMPER CALIBRATION ROUTINE RUNNINGIf DCV Auto enable has been programmed, when the W7220 is completing acalibration on the dampers, this alarm will display. Wait until the calibration iscompleted and the alarm will go away. Must have OA, MA and RA sensors forDCV calibration; set up in the Advanced setup menu.DA SENS ALM N/A N/A DISCHARGE AIR TEMPERATURE SENSOR ALARMDischarge air temperature is out of the range set in the ADVANCED SETUPMenu. Check the temperature of the discharge air.SYS ALARM N/A N/A When AUX1-0 is set to SYS and there is any alarm (e.g., failed sensors, etc.),the AUX1-0 terminal has 24 Vac out.ACT UNDER V N/A N/A ACTUATOR VOLTAGE LOWVoltage received by actuator is above expected range.ACT OVER V N/A N/A ACTUATOR VOLTAGE HIGHVoltage received by actuator is below expected range.ACT STALLED N/A N/A ACTUATOR STALLEDActuator stopped before achieving commanded position.CLO — Compressor LockoutERV — Energy Recovery VentilatorLCD — Liquid Crystal DisplayMA — Mixed AirMAT — Mixed Air TemperatureN/A — Not ApplicableOA — Outdoor AirOAT — Outdoor Air TemperatureOCC — OccupiedRA — Return AirRAT — Return Air TemperatureRTU — Rooftop UnitSYS — SystemFAN SPEED DEMAND CONTROLLED VENTILATION(CO 2 SENSOR) SETPOINTS CHECKOUT1 NO MIN POS VMAX – HS1 NO N/A N/A2 NO MIN POS H VMAX – HS2 NO MIN POS L VMAX – LS1 YES VENT MIN VMIN – HS1 YES VENT MAX VMAX – HS2 YES VENT MIN H VMIN – HS2 YES VENT MAX H VMAX – LS2 YES VENT MIN L N/A2 YES VENT MAX L N/A