Sequence Of Operation; Care And Maintenance - Carrier 38BRW Installation And Start-Up Instructions Manual

Split-system air conditioner

Enlarged version

6. Factory charge is shown on unit rating plate. Adjust charge by

following procedure shown on charging tables located on unit.

SEQUENCE OF OPERATION

Turn on power to indoor and outdoor units. Transformer is

energized.

On a call for cooling, the thermostat makes circuits R-Y and R-G.

Circuit R-Y energizes contactor, starting outdoor fan motor and

compressor circuit. R-G energizes indoor unit blower relay,

starting indoor blower motor on high speed.

When thermostat is satisfied, its contacts open, de-energizing

outdoor contactor and indoor blower relay. Compressor and

motors stop.

If indoor unit is equipped with a time-delay relay circuit, indoor

blower will run an additional 90 seconds to increase system

efficiency.

For continued high performance and to minimize possible equip-

ment failure, periodic maintenance must be performed on this

equipment.

Leave User's Manual with homeowner. Explain system operation

and periodic maintenance requirements outlined in manual. Fre-

quency of maintenance may vary depending on geographic areas,

such as coastal applications which require more frequent mainte-

nance.

38ckw