Appendix
62
Installation and maintenance instructions Hydraulic station 0020257319_02
Technical data
–
Heating circuit
VWL 57/5 IS
VWL 77/5 IS
VWL 127/5 IS
Material in the heating circuit
Copper, copper-zinc
alloy, stainless steel,
ethylene propylene diene
monomer rubber, brass,
steel, composite
materials
Copper, copper-zinc
alloy, stainless steel,
ethylene propylene diene
monomer rubber, brass,
steel, composite
materials
Copper, copper-zinc
alloy, stainless steel,
ethylene propylene diene
monomer rubber, brass,
steel, composite
materials
Permissible water composition
Without frost or corrosion
protection. Soften the
heating water at water
hardnesses from 3.0
mmol/l (16.8° dH)
according to Directive
VDI 2035 sheet 1.
Without frost or corrosion
protection. Soften the
heating water at water
hardnesses from 3.0
mmol/l (16.8° dH)
according to Directive
VDI 2035 sheet 1.
Without frost or corrosion
protection. Soften the
heating water at water
hardnesses from 3.0
mmol/l (16.8° dH)
according to Directive
VDI 2035 sheet 1.
Minimum operating pressure
0.05 MPa
(0.50 bar)
0.05 MPa
(0.50 bar)
0.05 MPa
(0.50 bar)
Maximum operating pressure
0.3 MPa
(3.0 bar)
0.3 MPa
(3.0 bar)
0.3 MPa
(3.0 bar)
Min. heating mode flow temperat-
ure
20
℃
20
℃
20
℃
Max. heating mode flow temperat-
ure with compressor
55
℃
55
℃
55
℃
Max. heating mode flow temperat-
ure with back-up heater
75
℃
75
℃
75
℃
Min. cooling mode flow temperat-
ure
7
℃
7
℃
7
℃
Max. flow temperature in cooling
mode
25
℃
25
℃
25
℃
Min. nominal volume flow with
3 kW outdoor unit
0.3 m
³
/h
Min. nominal volume flow with
5 kW outdoor unit
0.4 m
³
/h
Minimum nominal volume flow
rate
0.55 m
³
/h
Nominal volume flow
Δ
T 5 K with
3 kW outdoor unit
0.54 m
³
/h
Nominal volume flow
Δ
T 5 K with
5 kW outdoor unit
0.79 m
³
/h
Nominal volume flow
Δ
T 5 K
1.02 m
³
/h
Nominal volume flow
Δ
T 5 K with
10 kW outdoor unit
1.70 m
³
/h
Nominal volume flow
Δ
T 5 K with
12 kW outdoor unit
1.80 m
³
/h
Nominal volume flow
Δ
T 8 K with
3 kW outdoor unit
0.3 m
³
/h
Nominal volume flow
Δ
T 8 K with
5 kW outdoor unit
0.4 m
³
/h
Nominal volume flow
Δ
T 8 K
0.55 m
³
/h
Nominal volume flow
Δ
T 8 K with
10 kW outdoor unit
1.13 m
³
/h
Nominal volume flow
Δ
T 8 K with
12 kW outdoor unit
1.18 m
³
/h
Remaining feed head
Δ
T 5 K with
3 kW outdoor unit
71 kPa
(710 mbar)
Remaining feed head
Δ
T 5 K with
5 kW outdoor unit
68 kPa
(680 mbar)
Remaining feed head
Δ
T 5 K
66 kPa
(660 mbar)
Remaining feed head
Δ
T 5 K with
10 kW outdoor unit
54 kPa
(540 mbar)