Staged Air Volume (Savt) With Variable Frequency Drive - Carrier WeatherExpert 48LC Installation Instructions Manual

Weatherexpertr series single package rooftop gas heat/electric cooling unit with puronr (r ---410a) refrigerant sizes: 14, 17, 20, 24, 26

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Staged Air Volume (SAVt) with Variable

Frequency Drive

The Staged Air Volume (SAV) system utilizes a Variable

Frequency Drive (VFD) to automatically adjust the indoor

fan motor speed in sequence with the unit's ventilation,

cooling and heating operation. Per ASHRAE 90.1- - 2016

standard during the first stage of cooling operation the

SAV system will adjust the fan motor to provide 66% of

the design airflow rate for the unit. When the call for the

second stage of cooling is required, the SAV system will

allow the design airflow rate for the unit established

(100%). During the heating mode, the SAV system will

allow total design airflow rate (100%) operation. During

ventilation mode, the SAV system will operate the fan

motor at 66% speed.

230V/460V

575V ONLY

C13209

Fig. 57 - - VFD Location

C13110

Fig. 56 - - Variable Frequency Drive (VFD)

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