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Installing the pipes
Install the drain fitting and the drain hose (for model
with heat pump only).
Condensation is produced and flows from the
outdoor 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.
Use suitable connecting pipes and equipment for the refrigerant R410a.
The connecting pipes must not exceed the maximum lengths 10 m.
Wrap all the refrigerant pipes and joints.
Tighten the connections using two wrenches working in opposite directions.
Air Purging
Humid air left inside the refrigerant circuit can cause
compressor 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 lowpressure 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.
Disconnect the vacuum pump hose.
8. Replace and tighten all the caps on the valves.
Diameter (mm)
Ø 6
Ø 9.5
Ø 12
Ø 16
Ø 19
INSTALLATION DIMENSION DIAGRAM
The installation must be done by trained and qualified service personnel with reliability according to this
manual.
• Contact service centre before installation to avoid the malfunction due to unprofessional installation.
• When picking up and moving the units, you must be guided by trained and qualified person.
• Ensure that the recommended space is left around the appliance.
Twisting moment (Nm)
15~20
35~40
45~50
60~65
70~75
Indoor unit
Refrigerant fluid direction of flow
3-way valve
(7) Turn to open fully
Service
inlet
(2) Turn
(8) Secure
valve cap
44
Vacuum pump
Vacuum pump
2-way valve
(6) Open 1/4 turn
(7) Turn to open fully
valve cap
(2) Turn
(2) Turn
(8) Secure
(8) Secure
Connect to
indoor unit
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