4 Installation
Installation manual
7
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
3P600450-1C – 2020.05
NOTICE
If the drain holes of the outdoor unit are blocked up by a
mounting base or floor surface, place additional foot bases
≤30 mm under the outdoor unit's feet.
▪ Use a drain socket for drainage if necessary.
a
a
Drain hole
To close the drain holes and attach the drain
socket
1
Install drain caps (accessory f) and (accessory g). Make sure
the edges of the drain caps close off the holes completely.
2
Install the drain socket.
a
c
b
b
b
a
a
a
Drain hole. Install a drain cap (large).
b
Drain hole. Install a drain cap (small).
c
Drain hole for drain socket
4.1.4
To prevent the outdoor unit from falling
over
In case the unit is installed in places where strong wind can tilt the
unit, take following measure:
1
Prepare 2 cables as indicated in the following illustration (field
supply).
2
Place the 2 cables over the outdoor unit.
3
Insert a rubber sheet between the cables and the outdoor unit
to prevent the cables from scratching the paint (field supply).
4
Attach the ends of the cables.
5
Tighten the cables.
4.2
Connecting the refrigerant piping
DANGER: RISK OF BURNING
CAUTION
▪ No brazing or welding on site for units with R32
refrigerant charge during shipment.
▪ During installation of the refrigeration system, joining of
parts with at least one part charged shall be performed
taking into account the following requirements:
ð
inside occupied spaces non permanent joints are not
allowed for R32 refrigerant except for site made joints
directly connecting the indoor unit to piping. Site made
joints directly connecting piping to indoor units shall
be of non permanent type.
CAUTION
Do NOT connect the embedded branch piping and the
outdoor unit when only carrying out piping work without
connecting the indoor unit in order to add another indoor
unit later.
4.2.1
Connections between outdoor and indoor
unit using reducers
INFORMATION
▪ For the DHW generator for Multi use the same reducer
as for the 20 class indoor unit.
▪ For the Hybrid for Multi, see the indoor unit installation
manual for the capacity class and applicable reducer.
Total indoor unit capacity class that can be connected to this
outdoor unit:
Outdoor unit
Total indoor unit capacity
class
3MXM40
≤7.0 kW
3MXM52, 3AMXM52, 3MXF52,
3AMXF52
≤9.0 kW
3MXM68, 4MXM68, 3MXF68
≤11.0 kW
4MXM80
≤14.5 kW
5MXM90
≤15.6 kW
Port
Class
Reducer
3MXM40
A
15, 20, 25, 35
—
B + C
15, 20, 25, 35
2+4
3MXM52, 3AMXM52
A
15, 20, 25, 35
—
B + C
15, 20, 25, 35
2+4
42, 50
—
3MXM68
A
15, 20, 25, 35
—
B + C
15, 20, 25, 35
2+4
42, 50, 60
—
3MXF52, 3AMXF52, 3MXF68
A
20, 25, 35
—
B + C
20, 25, 35
2+4
4MXM68
A + B
15, 20, 25, 35
—
C + D
15, 20, 25, 35
2+4
42, 50, 60
—
4MXM80
A
15, 20, 25, 35
—
B
15, 20, 25, 35
2+4
42, 50, 60
—
