INVENTOR V1KI-09, Owner'S Manual

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12.5.2 Refrigerant Piping work
The refrigerant is R410A for" " series outdoor units,
GWP=2020 ODP=0
The standard pipe length is 5m. When the length (L) of the connecting pipe is less than or equals
7m, there is no need to add refrigerant. If the connecting pipe is longer than 5m, it is required to add
refrigerant. In the below table, the amounts of refrigerant to be added for different models are listed for
each additional meter of pipe length.
Select copper pipes for gas and liquid as informed in specific table (see the pipe table below).For
dust and moisture protection, before assembly of the pipe and its insulation, both ends of the pipe must
be covered.
Table.10
Size of Fitting Pipe
(Inch)
Item
Model
Gas
Pipe
Liquid
Pipe
Max Pipe
Length
(m)
Max Height
Difference
between
Indoor Unit
and Outdoor
Unit(m)
Amount of
Additional
Refrigerant
to Be
Filled For
Extra(Length
of Pipe)
Drainage
Pipe
(Diameter
× Wall
Thickness
)
15 30
15 30
15 30
15 60
15 60
15 60
30 60
30 60
30 60
Φ 17×1.75
Avoid pipe bending as mush as possible, if it is necessary, the bending radius must be more than 3
or 4 cm.
Connection between an Indoor unit and an Outdoor Unit
1. Unscrew the flare nut for releasing pressure gas in the indoor unit. If there is no high pressure gas
blowing out, it is the signal of leakage for the indoor unit.
2. Fit the flare nut to the liquid pipe. Flare the pipe’s end with flare tools.
Tighten both flare nuts into gas pipe and liquid pipe at the indoor unit with two spanners.
Liquid pipe
Fig.60
3/8 1/4 20
V1KI-09
V1KI-12
V1KI-18
V1KI-24
V1KI-30
V1KI-36
V1KI-45
V1KI-50
V1KI-60
3/8 1/4 20
1/2 1/4 20
5/8 3/8 30
5/8 3/8 30
5/8 3/8 30
5/8 3/8 50
5/8 3/8 50
3/4 3/8 50
U1RT-**