System overview 3
0020217827_03 aroTHERM Installation instructions
7
3.3.2
Thawing
1
2
3
4
5
6
1
Evaporator
2
4-port valve
3
Fan
4
Compressor
5
Electronic expansion
valve
6
Plate heat exchanger
3.3.3
Application limits
Operating the pump outside the application limits results in
the heat pump being switched off by the internal control and
safety devices.
3.3.3.1 Application limits in heating mode
(VWL 55/3 A 230 V)
60
50
70
40
30
20
10
0
-20
-10
0
10
20
30
40
50
[-15;22]
[-15;45]
[46;22]
[46;58]
[35;60]
[28;60]
[2;60]
[-10;55]
1
2
[28;22] [35;22]
A
B
1
Heating mode applica-
tion limits
2
Domestic hot water
generation application
limits
A
Water temperature
B
Air temperature
3.3.3.2 Application limits in heating mode
(VWL 85/3 A 230 V)
60
50
70
40
30
20
10
0
-20
-10
0
10
20
30
40
50
[-20;22]
[-20;43]
[46;22]
[46;58]
[35;63]
[28;63]
[2;63]
[-10;55]
1
2
[28;22] [35;22]
A
B
1
Heating mode applica-
tion limits
2
Domestic hot water
generation application
limits
A
Water temperature
B
Air temperature
3.4
System diagram (VWL 55/3 A 230 V)
e
1
3
12
16
17
19
24
15
21
14
11
4
23 20
2
22
5 13
8
9
6
7
10
A
B
18
1
Fan
2
Air inlet temperature
sensor
3
Ribbed pipe heat ex-
changer
4
Temperature sensor
of the ribbed pipe heat
exchanger
5
4-way valve
6
Return heating circuit
temperature sensor
7
High-efficiency pump
with flow rate sensor
8
Purging valve
9
Flow heating circuit
temperature sensor
10
Drain valve
11
Plate heat exchanger
12
Temperature sensor
after the plate heat
exchanger
13
Service valve for the
high-pressure range of
the refrigerant circuit
14
High-pressure pressure
switch in the refrigerant
circuit
15
High-pressure sensor in
the refrigerant circuit
16
Compressor outlet
temperature sensor
17
Rotary piston com-
pressor
18
Filter
19
Liquid separator
20
Electronic expansion
valve
21
Compressor inlet tem-
perature sensor
22
Service valve for the
low-pressure range of
the refrigerant circuit
23
Filter
24
Fluid collector
A
Heating return
B
Heating flow
3.5
Basic system diagram (VWL 85/3 A 230 V)
e
1
3
12
16
17
19
25
23
15
21
14
11
4
24 20
2
22
5 13
8
9
6
7
10
A
B
18
1
Fan
2
Air inlet temperature
sensor
3
Finned-tube heat ex-
changer
Summary of Contents for aroTHERM VWL 55/3 A 230 V
Page 39: ......
