Nibe F730 - Connections

Removing the cover, base circuit board
Caution
To remove the cover for the base board, the
cover for the input circuit board must first be
removed.
1
A
B
2
1.
Insert the screwdriver (A) and pry the catch carefully
downwards (B).
2.
Angle out the cover and remove it.
CABLE LOCK
Use a suitable tool to release/lock cables in the heat
pump terminal blocks.
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
1
2
Connections
NOTE
To prevent interference, unscreened commu-
nication and/or sensor cables to external con-
nections must not be laid closer than 20 cm
from high voltage cables.
POWER CONNECTION
F730 must be installed via an isolator switch with a
minimum breaking gap of 3mm. Minimum cable area
must be sized according to the fuse rating used. Sup-
plied cable (length approx. 2 m) for incoming supply
electricity is connected to terminal block X1 on the im-
mersion heater board (AA1). The connection cable can
be found on the back of F730 (see dimensions diagram
below).
50
330
30
1450
Power supply cable
UB1 and UB2
Connection 1x230V
PE1
0 L1 1PEN
AA1-X1
AA1-X1
TARIFF CONTROL
If the voltage to the immersion heater and/or the com-
pressor disappears for a certain period, there must also
be blocking via the AUX-input at the same time, see
"Possible selection for AUX inputs".
NIBE F730Chapter 5 | Electrical connections28