Nibe ACVM 270, Installation And Maintenance Instructions Manual

Page: 32 / 96

Connecting the supply
Incoming electricity supply is connected to terminal block
(X1) via cable gland (UB1). The cable must be dimensioned
according to the applicable norms.
ACVM 270 can be connected with either 400 V 3NAC or
230 V 1AC.
400 V 3NAC : Connect incoming supply according to the
markings on terminal block (X1).
NOTE
Depending on the house main fuse and to avoid the
load monitor slowing down the compressor, other
loads in the house should be moved from L3 to L1
and L2.
230 V 1AC : Install the two enclosed straps between ter-
minals L1 and L2 and between L2 and L3 on the incoming
terminal block (X1). Connect electricity supply according
to the terminal block markings.
N 0 L L1 L2 L3
PE L N
N 0 L L1 L2 L3
PE L3 L2 L1 N
400 V 3NAC
230 V 1AC
400 V 3NAC
230 V 1 AC
Miniature circuit-breaker
The automatic heating control system, circulation pumps
and their wiring in ACVM 270, are internally fuse protected
with a miniature circuit breaker (FA1).
Outdoor module AMS 10 and equipment are internally
fuse protected in ACVM 270, with a miniature circuit
breaker (FA2).
Temperature limiter
The temperature limiter (FD1) cuts the current supply to
the electrical addition if the temperature rises between
90 and 100 °C and can be manually reset.
Resetting
The temperature limiter (FD1) is accessible behind the
front cover. The temperature limiter is reset by firmly
pressing in its button.
NOTE
Reset the temperature limiter, it may have tripped
during transport.
Connection between ACVM 270 and AMS 10
The cable between the units must be connected between
terminal block for supply (TB) in AMS 10 and terminal block
(X2) in ACVM 270 via cable gland (UB2).
NOTE
AMS 10 must be earthed before the wiring between
the units is connected.
The wiring must be attached so that the terminal
block is not put under stress.
Stripped length of conductor is 8 mm.
AMS 10-8
LEK
Cable holder
TB
Connect phase (brown), neutral (blue), communication
(black and grey) as well as earth (yellow/green) as illus-
trated:
L N
1 2 3
L N 2 3 PE
(AMS 10-12:-X1)
(ACVM 10-270:-X2)
N L
1 2 3
L N 2 3 PE
(AMS 10-8:-X1)
(ACVM 10-270:-X2)
AMS 10-8
brown blue black grey
yellow/green
5x2.5 mm2
TB
X2
ACVM 270
NIBE™ SPLIT ACVM 270 32
For the Installer
Electrical installation