5 Piping installation
Installation manual
10
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680074-1 – 2021.11
3
Reinstall the bottom cover.
NOTICE
When closing the indoor unit cover, make sure that the
tightening torque does NOT exceed 2.94 N•m.
4.3
Mounting the indoor unit
4.3.1
To install the indoor unit
1
Install 2 plugs into the wall and insert (but not completely) 2
bolts with washers Ø8 mm into the plugs.
440
>300
71
1 = mod.90
963 = mod.120
(mm)
2×
2
Lift the unit.
±45
kg
3
Attach the unit to the wall:
▪ Locate the bracket on the back of the unit above the 2 bolts.
▪ Lower the bracket on the back of the unit over the 2 bolts.
▪ Tighten the 2 bolts.
▪ Make sure the unit is fixed properly.
5
Piping installation
5.1
Preparing refrigerant piping
5.1.1
Refrigerant piping requirements
NOTICE
Remove top cover before installing the refrigerant piping.
NOTICE
Do NOT use excessive force when connecting the field
piping and make sure the piping is aligned properly.
Deformation of the piping can cause malfunctioning of the
unit.
For information related with piping length, diameter, connections and
insulation see the Installation manual – Outdoor unit.
▪
Piping connections:
Only flare and brazed connections are
allowed. The indoor and outdoor units have flare connections.
Connect both ends without brazing. If brazing should be needed,
take the guidelines in the installer reference guide into account.
Also see
"4.1.2 Special requirements for R32 units"
5] for
additional requirements.
5.2
Connecting refrigerant piping
See the installation manual of the outdoor unit for all guidelines,
specifications and installation instructions.
5.2.1
To connect the refrigerant piping to the
indoor unit
1
Connect the liquid stop valve from the outdoor unit to the
refrigerant liquid stop valve of the indoor unit.
b
a
a
Refrigerent liquid stop valve
b
Refrigerent gas stop valve
2
Connect the gas stop valve from the outdoor unit to the
refrigerant gas stop valve of the indoor unit.
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