13 Unit installation
Installation and operation manual
24
BS4~12A14AJV1B
VRV 5 branch selector unit
4P670163-1 – 2022.02
13.4.2
To connect the drain piping
NOTICE
Incorrect connection of the drain hose might cause leaks,
and damage the installation space and surroundings.
1
Push the drain hose as far as possible over the drain pipe
connection.
1
a
b
a
Drain pipe connection (attached to the unit)
b
Drain hose (accessory)
2
Position the metal clamp over the drain hose, as close to the
unit as possible.
3
Tighten the metal clamp and bend the tip of the metal clamp so
that the large, self-adhesive sealing pad (accessory) will not be
forced outwards when applied.
4
c
3
2
c
Metal clamp (accessory)
4
Check if the water drains correctly.
▪ Open the inspection hole by removing the inspection hole
cover.
2×
≤
3.2 N·m
PH2
SW8
▪ Gradually add water through the inspection hole.
▪ Verify that the water flows through the drain hose and check
for water leaks.
▪ Close the inspection hole.
5
Wind the large, self-adhesive sealing pad (accessory) around
the metal clamp and drain hose.
Note:
Start on the screw part of the metal clamp, work your way
around the clamp and end overlapping your starting point.
5
b
a
c
d
a
Drain pipe connection (attached to the unit)
b
Drain hose (accessory)
c
Metal clamp (accessory)
d
Large, self-adhesive sealing pad (accessory)
6
Connect the drain piping to the drain hose.
6
e
e
Drain piping (field supply)
13.4.3
To install the drain piping
1
Install the drain piping with hanging bars as shown in the
illustration.
1~1.5 m
a
a
Hanging bar
Allowed
Not allowed
2
Provide a downwards slope (at least 1/100) to prevent air from
being trapped in the piping. If unable to provide an adequate
slope for the drain, use the drain up kit (K-KDU303KVE).
3
Insulate the complete drain piping in the building to prevent
condensation.
13.5
Installing the ventilation ducting
13.5.1
To install the ducting (field supply)
Only
for
the
ventilated
enclosure
safety
measure.
See
WARNING
Do NOT install operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater) in the duct work.
CAUTION
If the metal duct passes through a metal lath, wire lath or
metal plate of the wooden structure, separate the duct and
wall electrically.
1
Connect the air outlet.
