Nibe F2120-12, Installer Manual

Page: 27 / 68

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
0
LEK
1. 2. 3. 4.
Connect external control voltage (230V~ 50Hz) to ter-
minal block X5:L, X5:N and X5:PE (as illustrated).
L
N
L
N
L
N
F2120
X5
Externt
X5
External F2120
If external control voltage is used during tariff control,
connect a closing contact to terminal X21:1 and X21:2
(compressor blocking) to prevent an alarm.
X21
X21
Compressor blocking
External heating cable in condensation water
pipe (KVR 10)
F2120 is equipped with a plinth for external heating
cable (EB14, not enclosed). The connection is fused
with 250 mA (F3) at the factory. If another heating
cable is to be used the fuse must be replaced with a
suitable one.
NIBE Part no. Fuse (F3) Total
output
(W)
Length
(m)
718085 T100mA/250V 15 1
518900* T250mA/250V 45 3
718086 T500mA/250V 90 6
* Fitted at the factory.
Replace the MCB (FC1) for automatic protection (FB1)
when installing KVR 10 if there is no external automatic
protection for the installation. Automatic protection
(FB1) is available as enclosed component for KVR 10.
Connect external heating cable (EB14) to terminal block
X9:L and X9:N. If there is a ground cable connect it to
X9:PE. See following image and read further in the in-
staller manual for KVR 10.
L
N
L
N
PE
F2120 Externt
L
N
PE
X9
F3
External F2120
EB14
External heat cable
F3
X9
NOTE
The pipe must be able to withstand the heat
from the heating cable.
To ensure this function the accessory KVR 10
should be used.
27 Chapter 5 | Electrical connections NIBE™ F2120