LG 1 Way Cassette ZTUQ12GULA1 Owner's Manual page 27

Pipe size (mm/inch)
12.7 (1/2)
15.88 (5/8)
• When tighten the pipe, hold the haxagonal body.
CAUTION
• A brazed, welded, or mechanical connection
shall be made before opening the valves to
permit refrigerant to flow between the
refrigerating system parts.
• When fared joints are reused indoors, the fare
part shall be re-fabricated. (for R32)
• When mechanical connectors are reused
indoors, sealing parts shall be renewed. (for R32)
• Copper in contact with refrigerants shall be
oxygen-free or deoxidized, for example CU-DHP
as specified in EN12735-1 and EN 12735-2.
Forming the Piping
Form the piping by wrapping the connecting
portion of the indoor unit with insulation material
and secure it with two kinds of vinyl tape.
• If you want to connect an additional drain hose,
the end of the drain outlet should be routed
above the ground. Secure the drain hose
appropriately.
In cases where the outdoor unit is
installed below the indoor unit
perform the following.
1
Tape the piping, drain hose and connecting
cable from down to up.
Torque (N.m)
55.6
75.7
2
Secure the tapped piping along the exterior
wall using saddle or equivalent.
Plastic band
a
Drain hose
c
Connecting cable
e
Outdoor unit
g
: Seal a small opening around the pipings
A
with gum type sealant.
: Trap is required to prevent water from
B
entering into electrical parts.
CAUTION
• Refrigerant tubing shall be protected or
enclosed to avoid damage.
• Flexible refrigerant connectors (such as
connecting lines between the indoor and
outdoor unit) that may be displaced during
normal operations shall be protected against
mechanical damage.
INSTALLATION
Taping
b
Pipings
d
Power supply
f
cord
27