Gree U-Match GU50W/A1-K

U-Match Series Cassette Type Unit
19
to the drainage hole on the chassis of the outdoor unit. Then connect a
drain hose to the drainage connector (If drainage connector is used, the
outdoor unit should be at least 10cm from the installation ground). See the
figures below.
Bottom
Drain cap
Drain pipe mounting hole
Chassis
Drain
connection
3.2.3 Connection Pipe Requirement
3.2.3.1 Installation Notice and Requirement on Connection Pipe
Installation method: Connect the connection pipes first to the indoor unit and
then to the outdoor unit. When bending a connection pipe, be careful not to damage
the pipe. Do not over-tighten the screw nut, otherwise leakage will occur. Besides,
the outside of connection pipe should be added with a layer of insulating cotton to
protect it from mechanical damage during installation, maintenance and
transportation.
Item
Model
Size of Fitting
Pipe(inch)
Maximum
pipe
length(m)
Biggest drop
between
indoor and
outdoor
units (m)
Drainage
pipe(Outer
Diameter × wall
thickness) (mm)
Liquid Gas
GUD50T/A1-K
Ф
1/4
Ф
1/2
30 15
Φ25×1.5
GU71T/A1-K
Ф
3/8
Ф
5/8
30 15
GU85T/A1-K
30 15
GU100T/A1-K
30 20
GU125T/A1-K
50
30
GU140T/A1-K
50
30
GU160T/A1-K
50
30
Connection pipe should adopt water-proof insulating material. Its wall thickness
should be 0.5-1.0mm and the pipe wall should be able to withstand 6.0MPa. The
longer the connection pipe is the worse cooling and heating performance it has.
When the drop between indoor and outdoor units is larger than 10m, an oil