Appendix
0020257319_02 Hydraulic station Installation and maintenance instructions
63
VWL 57/5 IS
VWL 77/5 IS
VWL 127/5 IS
Remaining feed head
Δ
T 5 K with
12 kW outdoor unit
51.5 kPa
(515.0 mbar)
Remaining feed head
Δ
T 8 K with
3 kW outdoor unit
71 kPa
(710 mbar)
Remaining feed head
Δ
T 8 K with
5 kW outdoor unit
68 kPa
(680 mbar)
Remaining feed head
Δ
T 8 K
73 kPa
(730 mbar)
Remaining feed head
Δ
T 8 K with
10 kW outdoor unit
82 kPa
(820 mbar)
Remaining feed head
Δ
T 8 K with
12 kW outdoor unit
81 kPa
(810 mbar)
Min. volume flow during continu-
ous operation at the operating lim-
its with a 3 kW outdoor unit
0.3 m
³
/h
Min. volume flow during continu-
ous operation at the operating lim-
its with a 5 kW outdoor unit
0.4 m
³
/h
Min. volume flow during continu-
ous operation at the operating lim-
its
0.55 m
³
/h
Min. volume flow during continu-
ous operation at the operating lim-
its with a 10 kW outdoor unit
1.13 m
³
/h
Min. volume flow during continu-
ous operation at the operating lim-
its with a 12 kW outdoor unit
1.18 m
³
/h
Max. volume flow during continu-
ous operation at the operating lim-
its with a 3 kW outdoor unit
0.54 m
³
/h
Max. volume flow during continu-
ous operation at the operating lim-
its with a 5 kW outdoor unit
0.79 m
³
/h
Max. volume flow during continu-
ous operation at the operating lim-
its
1.08 m
³
/h
Max. volume flow during continu-
ous operation at the operating lim-
its with a 10 kW outdoor unit
1.7 m
³
/h
Max. volume flow during continu-
ous operation at the operating lim-
its with a 12 kW outdoor unit
1.8 m
³
/h
Pump type
High-efficiency pump
High-efficiency pump
High-efficiency pump
Energy efficiency index (EEI) of
the pump
≤
0.2
≤
0.2
≤
0.23
Technical data
–
Electrics
VWL 57/5 IS
VWL 77/5 IS
VWL 127/5 IS
Min. electrical power consumption
of the heating pump
2 W
2 W
3 W
Max. electrical power consump-
tion of the heating pump
60 W
60 W
100 W
Electrical power consumption of
the heating pump at A7/35
Δ
T 5 K
with an external pressure loss of
250 mbar in the heating circuit
20 W
20 W
40 W
Technical data
–
Refrigerant circuit
VWL 57/5 IS
VWL 77/5 IS
VWL 127/5 IS
Material, refrigerant pipe
Copper
Copper
Copper
Length, refrigerant pipe, maximum
25 m
25 m
25 m
