Carrier WeatherExpert 50LC 07 Series Installation Instructions Manual

Also see for 50LC 07: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Service and maintenance instructions

39*With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for sec-ond stage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.†With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on second stage of mechanical cooling Y2–O after the delay if the call for Y1–I andY2–I have not been satisfied.*With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for secondstage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.†With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on second stage of mechanical cooling Y2–O after the delay if the call for Y1–I andY2–I have not been satisfied.Table 17 — Dry Bulb Operation with DCV (CO2 Sensor) — 2 Speed FanDEMANDCONTROLLEDVENTILATION (DCV)OUTSIDE AIRGOOD TOECONOMIZEY1-I Y2-I FANSPEED Y1-O Y2-O OCCUPIED UNOCCUPIEDBelow CO 2 SetNoOFF OFF LOW 0v/Off 0v/Off VENTMIN ClosedON OFF LOW 24v/On 0v/Off VENTMIN ClosedON ON HIGH 24v/On 24v/On VENTMIN ClosedYesOFF OFF LOW 0v/Off 0v/Off VENTMIN ClosedON OFF LOW 0v/Off 0v/Off VENTMIN toFull-Open Closed to Full-OpenON ON HIGH 24v/On 0v/Off VENTMIN toFull-Open Closed to Full-OpenAbove CO 2 SetNoOFF OFF LOW 0v/Off 0v/Off VENTMIN toVENTMAX ClosedON OFF LOW 24v/On 0v/Off VENTMIN toVENTMAX ClosedON ON HIGH 24v/On 24v/On VENTMIN toVENTMAX ClosedYesOFF OFF LOW 0v/Off 0v/Off VENTMIN toVENTMAX ClosedON OFF LOW 0v/Off 0v/Off VENTMIN toFull-Open Closed to Full-OpenON ON HIGH DELAY*24v/On 0v/Off† VENTMIN toFull-Open Closed to Full-OpenTable 18 — Enthalpy Operation without DCV (CO 2 Sensor) — 2 Speed FanDEMANDCONTROLLEDVENTILATION (DCV)OUTSIDE AIRGOOD TOECONOMIZEY1-I Y2-I FANSPEED Y1-O Y2-O OCCUPIED UNOCCUPIEDNO CO 2 SENSORNOOFF OFF LOW 0v/Off 0v/Off MIN POS ClosedON OFF LOW 24v/On 0v/Off MIN POS ClosedON ON HIGH 24v/On 24v/On MIN POS ClosedYESOFF OFF LOW 0v/Off 0v/Off MIN POS ClosedON OFF LOW 0v/Off 0v/Off MIN POS to Full Open Closed to Full-OpenON ON HIGH DELAY*24v/On 0v/Off† MIN POS to Full Open Closed to Full-Open