INSTALLING THE OUTDOOR UNIT
INSTALLER
BLEEDING
INSTALLER
1
3
Do not install the outdoor unit in pits or air vents
Installing the pipes
Use suitable connecting pipes and equipment for
the refrigerant R410A.
Wrap all the refrigerant pipes and joints.
Tighten the connections using two wrenches wor-
king in opposite directions.
Vacuum pump
Humid air left inside the refrigerant circuit can cause com-
pressor malfunction. After having connected the indoor
and outdoor units, bleed the air and humidity from the
refrigerant circuit using a vacuum pump.
(1) Unscrew and remove the caps from the 2-way and 3-
way valves.
(2) Unscrew and remove the cap from the service valve.
(3) Connect the vacuum pump hose to the service valve.
(4) Operate the vacuum pump for 10-15 minutes until an
absolute vacuum of 10 mm Hg has been reached.
(5) With the vacuum pump still in operation, close the
low-pressure knob on the vacuum pump coupling.
Stop the vacuum pump.
(6) Open the 2-way valve by 1/4 turn and then close it
after 10 seconds. Check all the joints for leaks using
liquid soap or an electronic leak device.
(7) Turn the body of the 2-way and 3-way valves. Discon-
nect the vacuum pump hose.
(8) Replace and tighten all the caps on the valves.
Vacuum pump
Vacuum pump
Location
Twisting moment (N.m)
35-40
60-65
45-50
70-75
ĭ
ĭ
Diameter (mm)
ĭ
ĭ
15-20
ĭ
18K unit need to be installed the indoor unit
Caution: Installation Must be Performed in Accordance
with the NEC/CEC by Authorized Personnel Only.
conversion joint
18K MODE:
Ɣ
INDOOR
UNIT
Connect to the
indoor unit
Refrigerant fluid di
rection of fiow
3-w
ay valve
2-w
ay valve
inlet
(2)Turn
(8) Secure
(7)Turn to open fully
(2)Turn
(8) Secure
(6) Open by 1/4 turn
(7)Turn to open fully
(2)Turn
(8) Secure
V
alve cap
Valve cap
Service
The refrigerant pipes must not exceed the maximum
Use bolts to secure the unit to a flat, solid floor.
When mounting the unit on a wall or the roof, make
sure the support is firmly secured so that it cannot
move in the event of intense vibrations or a strong
wind.
Install the drain fitting and the drain hose
(for model with heat pump only)
Condensation is produced and flows from the out-
door unit when the appliance is operating in the
heating mode. In order not to disturb neighbours
and to respect the environment,install a drain fitting
and a drain hose to channel the condensate water.
Install the drain fitting and rubber washer on the
outdoor unit chassis and connect a drain hose to it
as shown in the figure.
Models(m)
18Kx2
14Kx2
28Kx4
Max. connection pipe length
20
70
Max. connection pipe length
(Simple one indoor unit)
10
20
10
20
21Kx3 24Kx3
60
20
60
20
The sum of the capacity codes of the indoor units should be
among 50%-150% of that of the outdoor unit.
heights 5m(14K&18K)or 10m(21K&24K&28K).
