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Charge pump
The charge pump (not included in the product) is
powered and controlled from the indoor module/control
module. It has a built-in frost protection function and,
for this reason, must not be switched off when there is
a risk of freezing.
At temperatures below +2 °C the charge pump runs
periodically, to prevent the water from freezing in the
charge circuit. The function also protects against excess
temperatures in the charge circuit.
Pressure drop, condenser
Pressure drop
(kPa)
Flow
(l/s)
0
1
2
3
4
5
6
0
0,1
0,2
0,3
0,4
0,5
0,6
Tryckfall
[kPa]
Flöde [l/s]
Tryckfall S2125
Pipe insulation
UN
All outdoor pipes must be insulated with at least 19 mm
thick pipe insulation.
Installation alternative
S2125 can be connected in several ways. The necessary
safety equipment must be installed in accordance with
current regulations for all installation options.
See
for more detailed installation options.
Electrical connections
• Electrical installation and wiring must be carried out
in accordance with national provisions.
• Disconnect S2125 before insulation testing the house
wiring.
• If a miniature circuit breaker is used, this must have
at least triggering characteristic "C". See section
"Technical specifications" in the Installer Manual for
S2125.
• If the building is equipped with an earth-fault breaker,
S2125 should be equipped with a separate one.
• S2125 must be installed via an isolator switch. The
cable area has to be dimensioned based on the fuse
rating used.
The RCD should have a nominal tripping current of no
more than 30 mA. The incoming supply must be 400V
3N~ 50Hz via an electrical distribution unit with fuses.
For 230V~ 50Hz, the incoming supply must be 230V~
50Hz via distribution box with fuses.
• The routing of cables for heavy current and signals
should be made out through the cable glands on the
heat pump's right-hand side, seen from the front.
• The communication cable must be a screened cable
with three conductors.
• Connect the charge pump to the control module. See
where the charge pump is to be connected in the In-
staller Manual for your control module.
NIBE S2125 13
IT'S IN OUR NATURE
Содержание S2125
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