5 Piping installation
Installation manual
8
RXJ42+50A
R32 split series
3P512025-12X – 2021.12
353
600
240
(mm)
240
a
a
100 mm above expected level of snow
4.2.2
To install the outdoor unit
4× M8/M10
4.2.3
To provide drainage
NOTICE
If the unit is installed in a cold climate, take adequate
measures so that the evacuated condensate CANNOT
freeze.
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.
INFORMATION
For information on the available options, contact your
dealer.
1
Use a drain plug for drainage.
2
Use a Ø16 mm hose (field supply).
b
c
d
a
a
Drain port
b
Bottom frame
c
Drain plug
d
Hose (field supply)
To close the drain holes and attach the drain
socket
NOTICE
In cold areas, do NOT use a drain socket, hose and caps
(1, 2) with the outdoor unit. Take adequate measures so
that the evacuated condensate CANNOT freeze.
1
Install drain caps 1 and 2 (accessory). Make sure the edges of
the drain caps close off the holes completely.
a
b
a
Bottom frame
b
Drain cap
2
Install the drain socket.
a
c
b
b
b
a
a
a
Drain hole. Install a drain cap (2).
b
Drain hole. Install a drain cap (1).
c
Drain hole for drain socket
5
Piping installation
5.1
Preparing refrigerant piping
5.1.1
Refrigerant piping requirements
CAUTION
Piping and joints of a split system shall be made with
permanent joints when inside an occupied space except
joints directly connecting the piping to the indoor units.
NOTICE
The piping and other pressure-containing parts shall be
suitable for refrigerant. Use phosphoric acid deoxidised
seamless copper for refrigerant.
▪ Foreign materials inside pipes (including oils for fabrication) must
be ≤30 mg/10 m.
Refrigerant piping diameter
Use the same diameters as the connections on the outdoor units:
Pipe outer diameter (mm)
Liquid piping
Gas piping
Ø6.4
Ø12.7
Refrigerant piping material
▪
Piping material:
Phosphoric acid deoxidised seamless copper.
