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installation
installation
checking the brine concentration:
f
f
Determine the density of the ethylene glycol/water mixture,
e.g. with a hydrometer.
Using the actual density and temperature, you can check the actual
concentration in the diagram.
1,10
1,09
1,08
1,07
1,06
1,04
1,03
1,02
1,01
1,00
0,99
0,98
-20
0
20
40
60
80
100
50 Vol.-%
0
1,05
40
33
30
25
20
10
A
26
�0
3�
01
�1
91
4
X Temperature [°C]
Y Density [g/cm³]
A Frost protection [°C]
Note
The quoted performance data relates to ethylene glycol
(see "Specification").
f
f
Fit all brine pipes with diffusion-proof thermal insulation.
11.5 Heating water connection
The heating system to which the heat pump is connected must be
installed by a qualified contractor in accordance with the water
installation diagrams that are part of the technical guides.
f
f
Thoroughly flush the pipework before connecting the heat
pump to the heat source circuit. Foreign bodies, such as rust,
sand and sealant, can impair the operational reliability of the
heat pump. We recommend installing our Brine filling unit
WPSF in the heat source inlet (see chapter “Accessories”).
To facilitate the connection to the heating system, elbow push-fit
connectors are enclosed with the appliance (see chapter "Fitting
the push-fit connectors").
f
f
Connect one flexible pressure hose each to act as an anti-vi-
bration mount to the "heating flow" and "heating return"
connections. The pressure hoses are included as part of the
standard delivery.
f
f
Ensure the correct connection of the heating flow and return.
f
f
Check for tightness.
f
f
When sizing the heating circuit, observe the maximum avail-
able external pressure differential (see chapter "Specification
/ Data table").
f
f
Provide thermal insulation in accordance with applicable
regulations.
Safety valve
1
2
D
00000
37
50
5
1 Drain
2 Discharge outlet
f
f
Size the discharge outlet so that water can drain off unim-
peded when the safety valve is fully opened.
f
f
Ensure that the safety valve drain is open to the outside.
f
f
Install the safety valve drain with a constant fall to the dis-
charge outlet. When installing the drain, never kink the pipe.
11.6 oxygen diffusion
!
Material losses
Avoid using open vented heating systems or steel pipe-
work in conjunction with underfloor heating systems with
plastic pipes that are permeable to oxygen.
In open vented heating systems or in underfloor heating systems
with permeable plastic pipes, oxygen diffusion can cause corro-
