6 Installation
Installer reference guide
16
07C2V3
ROTEX HPSU monobloc compact outdoor unit
4P501827-1 – 2017.08
Wire type
Installation method
Stranded conductor
wire with round
crimp-style terminal
c b
b
a
c
a
B
B
a
Terminal
b
Screw
c
Flat washer
O
Allowed
X
Not allowed
Item
Tightening torque (N•m)
X3M
0.8~0.9
X4M
2.2~2.7
X5M
0.8~0.9
X7M
6.5.4
To connect the electrical wiring on the
outdoor unit
1
Remove the switch box cover. See
"6.2.2 To open the outdoor
unit" on page 11
.
2
Strip insulation (20 mm) from the wires.
a
b
a
Strip wire end to this point
b
Excessive strip length may cause electrical shock or
leakage.
3
Insert the wiring from the back of the unit:
a
b
c
≥25 mm
a
Low voltage cable
b
High voltage cable
c
Power supply cable
NOTICE
The distance between the high voltage and low voltage
cables should be at least 25 mm.
Routing
Possible cables (depends on the installed options)
a
Low voltage
▪ Interconnection cable to HPSU monobloc tank
▪ Remote outdoor sensor (option)
b
High voltage
▪ Shut-off valve (field supply)
c
Main power supply
▪ Main power supply
4
Inside the unit, route the wiring as follows:
a
b
a
Low voltage wiring
b
High voltage main power supply
5
Make sure that the cable does NOT come in contact with sharp
edges.
6
Install the switch box cover.
INFORMATION
When installing field supply or option cables, foresee
sufficient cable length. This will make it possible to remove/
reposition the switch box and gain access to other
components during service.
CAUTION
Do NOT push or place redundant cable length in the unit.
6.5.5
To connect the main power supply
1
Connect the main power supply.
1 2 3
X4M
2
3
1
1
GND
2
L
3
N
