Mitsubishi HMA100V Technical Manual page 301

Connecting the supply
Incoming supply is connected on terminal block (X1) via cable
gland (UB1). The cable must be dimensioned according to the
applicable norms.
Indoor unit can be connected with either 400 V 3NAC or 230
V 1AC.
400 V 3NAC/230V 3AC: Connect incoming supply according
to the markings on terminal (X1).
230 V 1AC: Install the supplied straps between terminals L1
and L2 as well as between L2 and L3 on incoming terminal
block (X1). Connect incoming supply according to the terminal
markings.
<HMA100V, HMA100VM>
<HMS140V>
UB2 UB2
400 V 3NAC
N 0 L L1L2L3
230 V 1AC
N 0 L L1L2L3
230 V 3AC
L L1 0 L2 L3
400V 3NAC 400V 3NAC
L3 L3
PE PE
L2 L2
L3 L3
L1 L1
L2 L2
L1 L1
L L
N N
0 0
N N
N N
230V 1AC 230V 1AC
L3 L3
PE PE
L2 L2
L L L1 L1
L L
N N
0 0
N N
N N
UB1 UB1
- 70 -
Miniature circuit-breaker (FA1, FA2, FA3)
The automatic heating control system, circulation pumps and
their wiring in indoor unit, are internally fuse protected with a
miniature circuit breaker (FA1).
Outdoor unit and equipment are internally fuse protected in
indoor unit, with a miniature circuit breaker (FA2).
Tank unit and equipment are internally fuse protected in indoor
unit with a miniature circuit breaker (FA3).
Temperature limiter (FD1)
The temperature limiter (FD1) cuts the current supply to the
electrical heater if the temperature rises up between 90 and
100°C and can be manually reset.
Resetting
400 V 3NAC
The temperature limiter (FD1) is accessible behind the front
cover. The temperature limiter is reset by firmly pressing in its
button.
NOTE
N 0 L L1L2L3 Reset the temperature limiter, it may have tripped
during transport.
230 V 1AC
Connection between indoor unit and outdoor unit
The cable between the units must be connected between
terminal block for incoming supply (TB) in outdoor unit and
terminal block (X2) in indoor unit via cable gland (UB2).
N 0 L L1L2L3
FDCW71
Note!
■ Outdoor unit 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.
■ Scale length of conductor is 8 mm.
Connect phase (brown), neutral (blue), communication (black
and grey) as well as earth (yellow/green) as illustrated:
'10 • HM-T-149A
Installation
Iutdoor unit installation
TB
Wiring clamp
FDCW100, 140VNX
TB
Cable holder
73