Nibe S2125 - Page 27

TARIFF CONTROL
If the control is to be supplied separately from other
components in the heat pump (e.g. for tariff connection),
a separate operating cable must be connected to termin-
al block (X5).
If external control voltage is used during tariff control,
connect a closing contact to connection X21:1 and X21:2
(compressor blocking) to prevent an alarm. Compressor
blocking must be performed either on the indoor mod-
ule/control module or on the air/water heat pump, not
on both simultaneously.
S2125
2
1
AA2:X21
Compressor blocking
S2125
CONNECTING EXTERNAL CONTROL
VOLTAGE
NOTE
Mark up any junction boxes with warnings for
external voltage.
When connecting external control voltage, remove the
bridges from terminal block X5 (see image).
L
EK
L
0
4.
2.
3.
1.
Connect external control voltage (230V~ 50Hz) to termin-
al block X5:L, X5:N and X5:PE (as illustrated).
F2120 Externt
AA2:X5
N
L
N
L
ExternalS2125
27Chapter 5 | Electrical connectionsNIBE S2125