Nibe S135, Installation Manual, Page: 19 / 36

General
Installation must be carried out in accordance with cur-
rent standards and directives.
When working behind screwed covers, the circuit fuse
must be removed or the connection plug pulled out.
Work behind screwed covers may only be carried out
under the supervision of a qualified electrician.
• Disconnect S135 before insulation testing the house
wiring.
• For electrical wiring diagram for S135, see page 32 .
• Signal cables to external connections must not be laid
close to high current cables.
• Signal cables to external connections are four core, at
least 0.35 mm
2
.
• If the supply cable is damaged, it must be replaced
by qualified persons.
NOTE
The supply cable must not be connected until
the boiler has been filled. Internal components
can be damaged.
NOTE
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Electrical installation and wiring
must be carried out in accordance with the
stipulations in force.
Connections
POWER CONNECTION
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.
S135 is connected to an earthed socket with the factory-
installed connection cable (length approx. 2.8 m), which
is fitted with a plug. The power connection to the circu-
lation pump must be connected via a circuit breaker with
a minimum breaking gap of 3 mm.
NOTE
The circulation pump must not be powered up
until S135 is activated in the indoor module.
19 Chapter 5 | Electrical connections NIBE S135
5 Electrical connections