To Install The Outdoor Unit; To Provide Drainage; Connecting The Refrigerant Piping; To Connect The Refrigerant Piping To The Outdoor Unit - Daikin ARXM50N2V1B9 Installation Manual

4 Installation
4.1.2

To install the outdoor unit

4.1.3

To provide drainage

NOTICE
If the unit is installed in a cold climate, take adequate
measures so that the evacuated condensate CANNOT
freeze.
INFORMATION
For information on the available options, contact your
dealer.
NOTICE
Provide at least 300 mm of free space below the unit.
Additionally, make sure the unit is positioned at least
100 mm above the expected level of snow.
1 Use a drain plug for drainage.
2 Use a Ø16 mm hose (field supply).
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.
Installation manual
14
4× M8/M10
b
a
c
d
a b c 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
4.2

Connecting the refrigerant piping

DANGER: RISK OF BURNING
4.2.1 To connect the refrigerant piping to the
outdoor unit
▪ Piping length. Keep field piping as short as possible.
▪ Piping protection. Protect the field piping against physical
damage.
WARNING
Connect the refrigerant piping securely before running the
compressor. If the refrigerant piping is NOT connected and
the stop valve is open when the compressor is run, air will
be sucked in. This will cause abnormal pressure in the
refrigeration cycle, which may result in equipment damage
and even injury.
CAUTION
▪ Use the flare nut fixed to the unit.
▪ To prevent gas leakage, apply refrigeration oil only to
the inside of the flare. Use refrigeration oil for R32.
▪ Do NOT reuse joints.
1 Connect the liquid refrigerant connection from the indoor unit to
the liquid stop valve of the outdoor unit.
a
c b
a Liquid stop valve
b Gas stop valve
c Service port
2 Connect the gas refrigerant connection from the indoor unit to
the gas stop valve of the outdoor unit.
NOTICE
It is recommended that the refrigerant piping between
indoor and outdoor unit is installed in a ducting or the
refrigerant piping is wrapped with finishing tape.
4.3

Checking the refrigerant piping

4.3.1

To check for leaks

NOTICE
Do NOT exceed the unit's maximum working pressure (see
"PS High" on the unit name plate).
ARXM50~71+RXM42~71N2V1B(9) + RXP50~71M2V1B +
RXA42+50+RXF50+60B2V1B + RXF71A2V1B + RXJ50N2V1B
R32 split series
3P512025-6M – 2018.11