STIEBEL ELTRON WPF 10 M, Руководство по эксплуатации и установке

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INSTALLATION
PREPARING FOR INSTALLATION
Check 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 details refer to ethylene glycol (see "Speci-
fication").
Thermally insulate all brine pipes with diffusion-proof material.
To prevent the transmission of noise, connect the heat source
circuit to the heat pump with flexible pressure hoses.
10.4.3 Checking the heat source flow rate
The heat source flow rate is set via the temperature differential of
the heat source circuit.
f f
Calculate the temperature differential. For this, operate the
appliance in heating mode or DHW mode.
Max. temperature differential of heat source circuit
6
1
2
5
4
3
2
1
-5 0 5 10 15 20
84
�0
3�
01
�0
01
7
Y Max. temperature differential [K]
X Source inlet temperature [°C]
1 Heating flow 35 °C
2 Heating flow 50 °C
Note
At the WPM II, the source parameter in the commissioning
report must be set to “ethylene glycol” otherwise the frost
stat will stop the heat pump at temperatures below 7 °C.
Note
You can check the source outlet temperature on the heat
pump manager display under system menu item TEM-
PERATURES.
10.5 Heating water connection
The heat pump heating system must be installed by a qualified
contractor in accordance with the water installation drawings that
are part of the technical documents.
f f Thoroughly flush the pipework before connecting the heat
pump. Foreign bodies, such as welding pearls, rust, sand,
sealant etc. can impair the operational reliability of the heat
pump.
f f Connect the heat pump on the hot water side. Check for
tightness.
Ensure the correct connection of the heating flow and return.
Provide thermal insulation in accordance with applicable regula-
tions.
For sizing the heating circuit, note the maximum available external
pressure differential.
10.5.1 Oxygen diffusion
!
Appliance damage
In underfloor heating systems, avoid open heating sys-
tems or the installation of steel pipes in conjunction with
plastic pipes that are permeable to oxygen.
Steel components such as internal cylinders, steel heating ele-
ments or steel pipes, can corrode as a result of oxygen diffusion in
open vented heating systems, of if plastic pipes that are permeable
to oxygen are used in underfloor heating systems.