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Subtype

LW 251

Certificate Holder
ait-deutschland GmbH
Industriestr. 3
95359 Kasendorf
Germany
Registration number
041-K001-40
Certification Body
BRE Global Limited
Subtype title
LW 251
Driving energy
n/a
Heat Pump Type
Outdoor Air/Water
Refrigerant
R407c
Mass of Refrigerant

9,800 kg

Certification Date
08.10.2019
Testing basis
n/a
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  • Number of models 2

Models

LW 251 (L)
Configure model
Model name
LW 251 (L)
Application
Heating (medium temp)
Units
Indoor
Climate Zone
Colder Climate + Warmer Climate
Reversibility
No
Cooling mode application (optional)
n/a
General Data
Power supply
3x400V 50Hz

Heating

EN 14511-2

Low temperature

Medium temperature

Heat output

15.47 kW

15.28 kW

El input

3.77 kW

5.21 kW

COP

4.11

2.93

EN 14511-4

Shutting off the heat transfer medium flow

passed

Complete power supply failure

passed

Starting and operating test

passed

Average Climate

EN 12102-1

Low temperature

Medium temperature

Sound power level indoor

63 dB(A)

63 dB(A)

EN 14825

Low temperature

Medium temperature

ηs

155 %

122 %

Prated

25.31 kW

25.01 kW

SCOP

3.95

3.13

Tbiv

-5 °C

-5 °C

TOL

-10 °C

-10 °C

Pdh Tj = -7°C

19.36 kW

19.18 kW

COP Tj = -7°C

2.96

2.07

Cdh Tj = -7 °C

1.00

1.00

Pdh Tj = +2°C

24.23 kW

23.93 kW

COP Tj = +2°C

3.77

3.02

Cdh Tj = +2 °C

1.00

1.00

Pdh Tj = +7°C

14.34 kW

14.29 kW

COP Tj = +7°C

5.06

4.13

Cdh Tj = +7 °C

1.00

1.00

Pdh Tj = 12°C

16.85 kW

16.82 kW

COP Tj = 12°C

5.90

5.44

Cdh Tj = +12 °C

1.00

1.00

Pdh Tj = Tbiv

20.44 kW

20.20 kW

COP Tj = Tbiv

3.18

2.24

Pdh Tj = TOL or Pdh Tj = Tdesignh if TOL < Tdesignh

17.75 kW

17.70 kW

COP Tj = TOL or COP Tj = Tdesignh if TOL < Tdesignh

2.66

1.83

WTOL

70 °C

70 °C

Poff

10 W

10 W

PTO

10 W

10 W

PSB

10 W

10 W

PCK

0 W

0 W

Supplementary Heater: Type of energy input

Electricity

Electricity

Supplementary Heater: PSUP

7.56 kW

7.31 kW

Annual energy consumption Qhe

13252 kWh

16517 kWh

Warmer Climate

EN 14825

Low temperature

Medium temperature

ηs

198 %

152 %

Prated

24.15 kW

23.51 kW

SCOP

5.02

3.87

Tbiv

4 °C

4 °C

TOL

2 °C

2 °C

Pdh Tj = +2°C

24.15 kW

23.51 kW

COP Tj = +2°C

3.55

2.35

Cdh Tj = +2 °C

1.00

1.00

Pdh Tj = +7°C

14.33 kW

14.23 kW

COP Tj = +7°C

4.74

3.33

Cdh Tj = +7 °C

1.00

1.00

Pdh Tj = 12°C

16.84 kW

16.77 kW

COP Tj = 12°C

5.71

4.90

Cdh Tj = +12 °C

1.00

1.00

Pdh Tj = Tbiv

20.25 kW

19.85 kW

COP Tj = Tbiv

3.88

2.63

Pdh Tj = TOL or Pdh Tj = Tdesignh if TOL < Tdesignh

24.15 kW

23.51 kW

COP Tj = TOL or COP Tj = Tdesignh if TOL < Tdesignh

3.55

2.35

WTOL

70 °C

70 °C

Poff

10 W

10 W

PTO

10 W

10 W

PSB

10 W

10 W

PCK

0 W

0 W

Supplementary Heater: Type of energy input

Electricity

Electricity

Supplementary Heater: PSUP

0.00 kW

0.00 kW

Annual energy consumption Qhe

6424 kWh

8123 kWh

Colder Climate

EN 14825

Low temperature

Medium temperature

ηs

134 %

110 %

Prated

22.63 kW

22.68 kW

SCOP

3.43

2.83

Tbiv

-12 °C

-12 °C

TOL

-20 °C

-20 °C

Pdh Tj = -7°C

19.39 kW

19.68 kW

COP Tj = -7°C

3.15

2.39

Cdh Tj = -7 °C

1.00

1.00

Pdh Tj = +2°C

24.28 kW

24.09 kW

COP Tj = +2°C

3.93

3.37

Cdh Tj = +2 °C

1.00

1.00

Pdh Tj = +7°C

14.35 kW

14.32 kW

COP Tj = +7°C

5.22

4.56

Cdh Tj = +7 °C

1.00

1.00

Pdh Tj = 12°C

16.85 kW

16.85 kW

COP Tj = 12°C

5.78

5.71

Cdh Tj = +12 °C

1.00

1.00

Pdh Tj = Tbiv

16.68 kW

16.71 kW

COP Tj = Tbiv

2.71

1.96

Pdh Tj = TOL or Pdh Tj = Tdesignh if TOL < Tdesignh

12.40 kW

13.77 kW

COP Tj = TOL or COP Tj = Tdesignh if TOL < Tdesignh

1.92

1.53

WTOL

70 °C

70 °C

Poff

10 W

10 W

PTO

10 W

10 W

PSB

10 W

10 W

PCK

0 W

0 W

Supplementary Heater: Type of energy input

Electricity

Electricity

Supplementary Heater: PSUP

22.63 kW

22.68 kW

Annual energy consumption Qhe

16286 kWh

19754 kWh

Pdh Tj = -15°C (if TOL<-20°C)

15.06

15.23

COP Tj = -15°C (if TOL<-20°C)

2.40

1.74

Cdh Tj = -15 °C

1.00

1.00

LW 251A
Configure model
Model name
LW 251A
Application
Heating (medium temp)
Units
Outdoor
Climate Zone
Colder Climate + Warmer Climate
Reversibility
No
Cooling mode application (optional)
n/a
General Data
Power supply
3x400V 50Hz

Heating

EN 14511-2

Low temperature

Medium temperature

Heat output

15.47 kW

15.28 kW

El input

3.77 kW

5.21 kW

COP

4.11

2.93

EN 14511-4

Shutting off the heat transfer medium flow

passed

Complete power supply failure

passed

Starting and operating test

passed

Average Climate

EN 12102-1

Low temperature

Medium temperature

Sound power level indoor

63 dB(A)

63 dB(A)

Sound power level outdoor

62 dB(A)

62 dB(A)

EN 14825

Low temperature

Medium temperature

ηs

155 %

122 %

Prated

25.31 kW

25.01 kW

SCOP

3.95

3.13

Tbiv

-5 °C

-5 °C

TOL

-10 °C

-10 °C

Pdh Tj = -7°C

19.36 kW

19.18 kW

COP Tj = -7°C

2.96

2.07

Cdh Tj = -7 °C

1.00

1.00

Pdh Tj = +2°C

24.23 kW

23.93 kW

COP Tj = +2°C

3.77

3.02

Cdh Tj = +2 °C

1.00

1.00

Pdh Tj = +7°C

14.34 kW

14.29 kW

COP Tj = +7°C

5.06

4.13

Cdh Tj = +7 °C

1.00

1.00

Pdh Tj = 12°C

16.85 kW

16.82 kW

COP Tj = 12°C

5.90

5.44

Cdh Tj = +12 °C

1.00

1.00

Pdh Tj = Tbiv

20.44 kW

20.20 kW

COP Tj = Tbiv

3.18

2.24

Pdh Tj = TOL or Pdh Tj = Tdesignh if TOL < Tdesignh

17.75 kW

17.70 kW

COP Tj = TOL or COP Tj = Tdesignh if TOL < Tdesignh

2.66

1.83

WTOL

70 °C

70 °C

Poff

10 W

10 W

PTO

10 W

10 W

PSB

10 W

10 W

PCK

0 W

0 W

Supplementary Heater: Type of energy input

Electricity

Electricity

Supplementary Heater: PSUP

7.56 kW

7.31 kW

Annual energy consumption Qhe

13252 kWh

16517 kWh

Warmer Climate

EN 14825

Low temperature

Medium temperature

ηs

198 %

152 %

Prated

24.15 kW

23.51 kW

SCOP

5.02

3.87

Tbiv

4 °C

4 °C

TOL

2 °C

2 °C

Pdh Tj = +2°C

24.15 kW

23.51 kW

COP Tj = +2°C

3.55

2.35

Cdh Tj = +2 °C

1.00

1.00

Pdh Tj = +7°C

14.33 kW

14.23 kW

COP Tj = +7°C

4.74

3.33

Cdh Tj = +7 °C

1.00

1.00

Pdh Tj = 12°C

16.84 kW

16.77 kW

COP Tj = 12°C

5.71

4.90

Cdh Tj = +12 °C

1.00

1.00

Pdh Tj = Tbiv

20.25 kW

19.85 kW

COP Tj = Tbiv

3.88

2.63

Pdh Tj = TOL or Pdh Tj = Tdesignh if TOL < Tdesignh

24.15 kW

23.51 kW

COP Tj = TOL or COP Tj = Tdesignh if TOL < Tdesignh

3.55

2.35

WTOL

70 °C

70 °C

Poff

10 W

10 W

PTO

10 W

10 W

PSB

10 W

10 W

PCK

0 W

0 W

Supplementary Heater: Type of energy input

Electricity

Electricity

Supplementary Heater: PSUP

0.00 kW

0.00 kW

Annual energy consumption Qhe

6424 kWh

8123 kWh

Colder Climate

EN 14825

Low temperature

Medium temperature

ηs

134 %

110 %

Prated

22.63 kW

22.68 kW

SCOP

3.43

2.83

Tbiv

-12 °C

-12 °C

TOL

-20 °C

-20 °C

Pdh Tj = -7°C

19.39 kW

19.68 kW

COP Tj = -7°C

3.15

2.39

Cdh Tj = -7 °C

1.00

1.00

Pdh Tj = +2°C

24.28 kW

24.09 kW

COP Tj = +2°C

3.93

3.37

Cdh Tj = +2 °C

1.00

1.00

Pdh Tj = +7°C

14.35 kW

14.32 kW

COP Tj = +7°C

5.22

4.56

Cdh Tj = +7 °C

1.00

1.00

Pdh Tj = 12°C

16.85 kW

16.85 kW

COP Tj = 12°C

5.78

5.71

Cdh Tj = +12 °C

1.00

1.00

Pdh Tj = Tbiv

16.68 kW

16.71 kW

COP Tj = Tbiv

2.71

1.96

Pdh Tj = TOL or Pdh Tj = Tdesignh if TOL < Tdesignh

12.40 kW

13.77 kW

COP Tj = TOL or COP Tj = Tdesignh if TOL < Tdesignh

1.92

1.53

WTOL

70 °C

70 °C

Poff

10 W

10 W

PTO

10 W

10 W

PSB

10 W

10 W

PCK

0 W

0 W

Supplementary Heater: Type of energy input

Electricity

Electricity

Supplementary Heater: PSUP

22.63 kW

22.68 kW

Annual energy consumption Qhe

16286 kWh

19754 kWh

Pdh Tj = -15°C (if TOL<-20°C)

15.06

15.23

COP Tj = -15°C (if TOL<-20°C)

2.40

1.74

Cdh Tj = -15 °C

1.00

1.00