Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

38Table 17 – Dry Bulb Operation No DCV (CO 2 Sensor) -- 2 Speed FanDemandControlledVentilation(DCV)Outside Air ---Good toeconomize?Y1 I Y2-I Fan Speed Y1-O Y2-O Occupied UnoccupiedNone NoOff Off Low 0-v/Off 0-v/Off MIN POS L ClosedOn Off Low 24-v/On 0-v/Off MIN POS L ClosedOn On High 24-v/On 24-v/On MIN POS H ClosedNone YesOff Off Low 0-v/Off 0-v/Off MIN POS L ClosedOn Off Low 0-v/Off 0-v/Off MIN POS L to Full-Open Closed to Full-OpenOn On High DELAY[24-v/On 0-v/Off * MIN POS H to Full-Open Closed to Full-Open* 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 and Y2 ---Ihave 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.Table 18 – Dry Bulb Operation With DCV (CO 2 Sensor) -- 2 Speed FanDemandControlledVentilation(DCV)Outside Air ---Good toeconomize?Y1 I Y2-I Fan Speed Y1-O Y2-O Occupied UnoccupiedBelow setNoOff Off Low 0-v/Off 0-v/Off VENTMIN L ClosedOn Off Low 24-v/On 0-v/Off VENTMIN L ClosedOn On High 24-v/On 24-v/On VENTMIN H ClosedYesOff Off Low 0-v/Off 0-v/Off VENTMIN L ClosedOn Off Low 0-v/Off 0-v/Off VENTMIN L to Full-Open Closed to Full-OpenOn On High 24-v/On 0-v/Off* VENTMIN H to Full-Open Closed to Full-OpenAbove setNoOff Off Low 0-v/Off 0-v/Off VENTMIN L to VENTMAX ClosedOn Off Low 24-v/On 0-v/Off VENTMIN L to VENTMAX ClosedOn On High 24-v/On 24-v/On VENTMIN H to VENTMAX ClosedYesOff Off Low 0-v/Off 0-v/Off VENTMIN L to VENTMAX ClosedOn Off Low 0-v/Off 0-v/Off VENTMIN L to Full-Open Closed to Full-OpenOn On High DELAY [24-v/On 0-v/Off * VENTMIN H to Full-Open Closed to Full-Open* 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 and Y2 ---Ihave 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.