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UNIT INSTALLATION
5.2 REMOVING THE COVERS
Please follow these operations if access to the indoor unit components is required:
•
Unscrew the 2 screws in A and remove the unit controller frame.
•
Unscrew the 1 screw in B and remove the service cover:
cover from the unit.
•
Pull the electrical box cover for access to the electrical box.
Unit controller frame
A
Service cover
5.3 INSTALLATION OF INDOOR UNIT
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N O T E
Please, try to perform the entire procedure following all the steps in the
exact order in which they are presented below.
Installation procedure
1 DHW pipe connection
2 Drain pipe connection
3 Refrigerant piping connection
4 Power and transmission wiring connection
5 Levelling procedure
6 Test and check
5.3.1 General notes before performing piping
work
•
Arrange locally-supplied copper pipes.
Select pipes of the appropriate material, with sufficient
•
thickness to withstand pressure.
•
Select clean copper pipes. Make sure that there is no dust
or moisture inside the pipes. Blow the inside of the pipes
with oxygen-free nitrogen to remove any dust and foreign
materials before connecting them.
5
PMML0451 rev.2 - 03/2018
Lean the cover towards yourself.
B
Electrical box cover
Cold water inlet
Adjustable feet x 4
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A refrigerant system with no moisture or oil contamination will yield
maximum performance and life cycle, whereas a poorly prepared system
will not. Take particular care to ensure that all copper piping is clean and
dry internally.
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Hot water outlet
Unit controller
Mg Anode
Electrical box
Heater
Handle x 2
Liquid refrigerant
connection
(1/4" Ø6.35 mm)
Gas refrigerant
connection
(3/8" Ø9.52 mm)
N O T E
Cap the end of the pipe when it is to be inserted through a
wall hole.
Do not put pipes on the ground directly without a cap or vinyl
tape at the end of the pipe.
If piping installation is not completed until the following day or
over a longer period of time, braze off the ends of the piping
and charge with oxygen-free nitrogen through a Schrader
valve type access fitting to prevent moisture and particle
contamination.
It is advisable to insulate the water pipes, joints and
connections in order to avoid heat loss and dew condensation
on the surface of the pipes or accidental injuries due to
excessive heat on piping surfaces.
Push it down.
Detach the
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