Bryant PACKAGED HEAT PUMP 548J User Manual download pdf (Page 7)

FACTORY OPTIONS AND/OR ACCESSORIES (cont.)

Motormaster Head Pressure Controller

The Motormaster motor controller is a low ambient, head

pressure controller kit that is designed to maintain the

unit’s condenser head pressure during periods of low

ambient cooling operation. Thi s device should be used as

an alternative to economizer fre e cooling not when

economizer usage is either not appropriate or desired. The

Motormaster will either cycle the outdoor--fan motors or

operate them at reduced speed to maintain the unit

operat ion, depending on the model.

Alternate Motors and Drives

Some appli cations need larger horsepower motors, some

need more airflow, and some need both. Regardless of the

case, your Bryant expert has a factory installed

combination to meet your application. A wide selection of

motors and pulleys (drives) are available, factory

installed, to handle nearly any application.

Thru--the--Base Connections

Thru--the--base connections, available as either an

accessory or as a factory option, are necessary to ensure

proper connection and seal when routing wire and piping

through the rooftop’s basepan and curb. The se couplings

eliminate roof penetration and should be considered for

gas lines, main power lines, as well as control power.

Electric Heaters

Bryant offers a full--line of field--installed accessory

heaters. The heaters are very easy to use, install and are

all pre --engineered and certified.

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Bryant PACKAGED HEAT PUMP 548J User Manual Page 7