ENGLISH
11
1. Form the piping according to its routing. Avoid bending and
bending back the same piping point more than three times.
(This will result in hardening the pipe.)
2. After deforming the piping, align centers of the union fitting of
the indoor unit and the piping, and tighten them firmly with
wrenches.
3. Connect pipe to the service valve or ball valve which is located
below the outdoor unit.
4. After completing the piping connection, be sure to check if there
is gas leakage in indoor and outdoor connection.
After completing the piping connection, execute vacuum drying for
the connecting piping and the indoor unit.
The vacuum drying must be carried out using the service ports of
both the liquid and gas side valves.
Use two wrenches and tighten with regular torque.
Union
Outdoor
unit
Liquid side
Flare connection
Flare connection
Gas side
Indoor
unit
Flare nut fastening torque
Ø6.35mm
1.8kg.m
Ø9.52mm
4.0kg.m
Ø12.7mm
5.5kg.m
Ø15.88mm
6.6kg.m
Ø19.05mm
6.6kg.m
Piping Connection
Vacuum drying
CAUTION
Summary of Contents for CEILING CASSETTE TYPE AIR CONDITIONERS
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