ERHQ011~W1 + ERLQ011~W1
Outdoor unit for air to water heat pump
4PW57794-1 – 08.2010
Installation manual
8
4.4.
Functional diagram W1
R2T
R3T
R6T
10
1
6
5
4
3
16
15
7
8
9
12
14
14
13
2
10
11
Y1E
19
Y3S
17
Y3E
Y1S
M1F-M2F
M1C
E1HC
S1NPH
S1PH
18
R1T
R4T
R5T
1
Indoor unit EKHBH/X016
15
Crank case heater
2
Outdoor unit
16
Fan motor
3
Heat exchanger
17
Electronic expansion valve (injection)
4
Service port 5/16"
18
Capillary tube
5
Compressor
19
Solenoid valve (hot gas pass)
6
Accumulator
R1T
Thermistor (air)
7
Pressure sensor
R2T
Thermistor (discharge)
8
High pressure switch
R3T
Thermistor (suction)
9
4-way valve
R4T
Thermistor (heat exchanger)
10
Filter
R5T
Thermistor (heat exchanger middle)
11
Electronic expansion valve (main)
R6T
Thermistor liquid
12
Field piping Ø9.5
Heating
13
Field piping Ø15.9
Cooling
14
Stop valve (with service port 5/16")