Nibe S2125, Installer Manual, Page: 26 / 64

TARIFF CONTROL
NOTE
All supply circuits must be disconnected, because
the compressor and the control system may have
separate power supplies.
If the control is to be powered separately from other com-
ponents in the heat pump (e.g. for tariff connection), a sep-
arate operating cable must be connected to terminal block
(X5).
If external control voltage is used during tariff control, a
closing contact must be connected to connection X21:1 and
X21:2 (compressor blocking) to prevent an alarm. Com-
pressor blocking must be performed either on the indoor
module/control module or on the air/water heat pump, not
on both simultaneously.
S2125
2
1
AA2:X21
Compressor blocking
S2125
Placement of labels
Caution
These labels should only be placed on the heat
pump in those cases where the heat pump has a
tariff connection with an external supply voltage.
Two labels should be placed on S2125. The labels are en-
closed with the manuals.
The small label is placed on the outside of the side panel.
The large label is placed on the inside of the side panel, next
to the insulation. See section "Removing the side panel and
top panel".
NIBE S2125 Chapter 5 | Electrical connections 26