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Pressure expansion vessel
The brine circuit should be fitted with a pressure
expansion vessel. If there is a level vessel, this should
be replaced. The brine side should be pressu rised to
at least 0.5 bar.
The pressure expansion vessel should be dimen-
sioned as set out in the diagram, to prevent operat-
ing disturbances. The pressure expansion vessel cov-
ers the temperature range from -10 °C to +20 °C at a
pre-pressure of 0.5 bar and the safety valve's opening
pressure 3 bar.
Pressure expansion vessel
l
60
50
40
30
20
10
0
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
Available pressure, heating medium side
Pressure
FIGHTER 1330 -22
Tryck
FIGHTER 1320-20
kPa
mvp
100 10
80
8
60
6
40
4
20
2
0
0
0
500
1000
1500
2000
Available pressure, collector side (ethanol 28 %)
FIGHTER 1330 -22/30/40
Pressure
Tryck
FIGHTER 1330-22/30/40
kPa
mvp
300 30
40
250 25
22
30
200
20
150 15
100
10
50
5
0
0
0
1000
2000
3000
Pipe connections
3
2
Flow
1
Flöde
2500 3000
3500
4000
4500
5000
4000
5000
6000
7000
8000
Limiting condenser out and
For HTF in hotter than -5 °C, limiting of max conden-
ser out 65 °C and max condenser in 58 °C.
For HTF in colder than -5 °C, max condenser out and
max condenser in lowers automatically, according to
diagram, additional heat maintains desired supply
temperature.
For HTF in lower than -8 °C, the compressor stops and
the desired supply temperature is only maintained by
additional heat.
Condenser out
Kondensor ut
°C
70
68
66
64
62
60
58
56
54
Brine
volume
52
50
-9 -7
-5 -3
l
1. Condenser out 2. Condenser in
Pressure
Tryck
FIGHTER 1330-30/40
FIGHTER 1320-25/30/40
kPa
mvp
100 10
80
8
60
6
40
4
20
2
0
0
l/h
0
500
1000
Flow
Flöde
l/h
FIGHTER 1330
condenser in
-1
1
3
5
7
9
11 13 15 17 19 21
1
1500
2000
2500 3000
3500
4000
11
1
2
Brine
Köldbä-
rare in
in
°C
3
2
Flow
Flöde
l/h
4500
5000 5500 6000
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