27
PB
OPERATION
Refrigerant System Diagram
(1)C Heat Pump + Auxiliary Electric Heater
(2) C Electric Heater
COOLED AIR
OUTDOOR COILS
HOT DISCHARGED AIR
CAPILLARY
AXIAL FAN
COMPRESSOR
HEATING MODE
COOLING MODE
NOTES:
REFRIGERANT FLOW DIRECTION
CENTRIFUGAL
OR CROSS FAN
HOT AIR
INDOOR COILS
ELECTRIC HEATER
COOLED AIR
COMPRESSOR
OUTDOOR COILS
HOT DISCHARGED AIR
CAPILLARY
REFRIGERANT FLOW DIRECTION
AXIAL FAN
CENTRIFUGAL
OR CROSS FAN
ELECTRIC HEATER
INDOOR COILS
COOLED AIR
Figure 301 (Sequence of Operation)