Nibe S1256PC Installer Manual page 69

Ground source heat pump
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WORKING RANGE HEAT PUMP, COMPRESSOR
OPERATION
The compressor provides a supply temperature up to 65 °C
at -5 °C incoming brine temperature.
The compressor's speed is limited in certain parts of the
working range.
Temperature,
Temperatur,
°C
°C
70
60
50
40
30
20
10
0
-15 -10
0
-5
Framledning
Flow pipe
Returledning
Return pipe
DIAGRAM, PASSIVE COOLING
Passive cooling, 21 °C return temperature nominal flow
brine/heating medium
Passiv kyla, 21 °C retur temp. nominelt flöde kb/vb
Passiv kyla, 21 °C retur temp. nominelt flöde kb/vb
Cooling capacity,
Angiven kyleffekt
Angiven kyleffekt
kW
Passiv kyla, 23 °C retur temp. nominelt flöde kb/vb
kW
8
kW
8
6
Angiven kyleffekt
kW
4
8
2
6
0
10
11
12
13
14
15
°C
6
Köldbärare in, temperatur
6 kW nominellt flöde
4
6 kW 2 x nominellt flöde
4
2
2
0
10
11
0
10
11
12
6 kW nominellt flöde
6 kW nominellt flöde
8 kW, nominal flow
6 kW 2 x nominellt flöde
8 kW, 2 x nominal flow
6 kW 2 x nominellt flöde
Passive cooling, 23 °C return temperature nominal flow
brine/heating medium
Passiv kyla, 23 °C retur temp. nominelt flöde kb/vb
Passiv kyla, 21 °C retur temp. nominelt flöde kb/vb
Cooling capacity,
Angiven kyleffekt
Angiven kyleffekt
kW
Passiv kyla, 23 °C retur temp. nominelt flöde kb/vb
kW
8
kW
8
6
Angiven kyleffekt
kW
4
8
2
6
0
10
11
12
13
14
15
°C
6
Köldbärare in, temperatur
6 kW nominellt flöde
4
6 kW 2 x nominellt flöde
4
2
2
0
10
11
0
10
11
12
6 kW nominellt flöde
8 kW, nominal flow
6 kW nominellt flöde
6 kW 2 x nominellt flöde
8 kW, 2 x nominal flow
6 kW 2 x nominellt flöde
NIBE S1256PC
5
10
15
25
20
30
35
Incoming brine temperature,
Inkommande köldbärartemp,
12
13
14
Incoming brine temperature,
13
14
15
°C
Köldbärare in, temperatur
Köldbärare in, temperatur
12
13
14
Incoming brine temperature,
13
Köldbärare in, temperatur
14
15
°C
Köldbärare in, temperatur
DIAGRAM,DIMENSIONINGCOMPRESSORSPEED
Heating operation 35 °C and 55 °C
Diagram for dimensioning a heat pump.
Heating capacity,
Avgiven värmeeffekt,
kW
kW
12
10
8
6
4
2
0
-5
-10
Max. heating capacity
Min. heating capacity
40
°C
°C
15
°C
°C
15
°C
°C
5
15
0
10
20
25
Incoming brine temperature,
Inkommande köldbärartemp,
Chapter 13 | Technical data
35°C
55°C
35°C
55°C
30
35
°C
°C
69

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