PERFORMANCE DATA
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HEAT PUMP CONDENSING UNIT ENGINEERING MANUAL
HEAT PUMP CONDENSING UNIT ENGINEERING MANUAL
Due to our policy of continuous product innovation, some specifications may change without notification.
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Heating Cycle Diagram
Figure 8: Heating Cycle Flow Diagram—ARUN 036, 047, 053
UNIT REFRIGERANT FLOW DIAGRAMS
IDU Coil
High Pressure Sensor
Y-Branch
Pressure Switch
Pressure Sensor
Strainer
Temperature Sensor
Electronic Expansion
Valve (EEV)
4-Way Valve
Field Piping Connection
Flow Regulator
Service Valve
Solenoid (Bypass) Valve
Solenoid (Hot Gas) Valve
Low Temp Low
Pressure Vapor
High Temp High
Pressure Liquid
High Temp High
Pressure Vapor
T1 Space Temperature
Sensor
T2 IDU Refrigerant Entering
Temperature Sensor
T3 IDU Refrigerant Leaving
Temperature Sensor
T4 Outdoor Ambient
Temperature Sensor
T5 Coil Pipe Temperature
Sensor
T6 Suction Temperature
Sensor
T7 Compressor Discharge
Temperature Sensor
T8 Pipe Temperature Sensor
T9 Sub Cooler Outlet
Temperature Sensor
T10 Sub Cooler Inlet
Temperature Sensor
P1 Low Pressure Sensor
P2 High Pressure Cutout
P3 High Pressure Sensor
IDU Fan
Indoor Unit “A” Indoor Unit “B”
Fan
Fan
DC DC
Charging
Port
Outdoor Unit
Charging
Port
Accumulator
Oil
Separator
Inverter
Comp.
Sub Cooler
Sub Cooler EEV
T1
T2
T3
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
P2
P1
P3
Airflow
Airflow
Airflow
Airflow
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