SYSVRF2 IM

6
Connection piping dimensions (unit: mm)
Unit: mm
Table.4-2
SIZE
HP
ΦB
ΦA
15.9
28.6
14-16
8-10
18-24
19.1
12.7
25.4
31.8
30-32
12
26-28
15.9
31.8
22.2
22.2
31.8
38.1
Fig.4-5
Fig.4-7
Fig.4-6
8
~12HP
R1
14~ 22HP
R2
24
~32HP
R3
4.3 Unit placement and installation
Air conditioners should not be exposed to direct radiation from
a high-temperature heat source.
Air conditioners should not be installed in positions where dust
or dirt may affect heat exchangers.
Air conditioners should not be installed in locations where
exposure to oil or to corrosive or harmful gases, such as acidic
or alkaline gases, may occur.
Air conditioners should not be installed in locations where
exposure to salinity may occur unless the anti-corrosion
treatment for high-salinity areas customization option has been
added.
Outdoor units should be installed in well-drained,
well-ventilated positions that are as close as possible to the
indoor units.
Placement of outdoor units should take account of the following
considerations:
4.4 Master and slave unit positioning
In systems with multiple outdoor units, the units should be placed in
order from largest capacity unit to smallest capacity unit. The
largest capacity unit must be placed on the first branch, and be set
as the master unit, while the others should be set as slave units.
The example in Figure 4-10 illustrates the placing of units in a 66HP
combination:
Place the 32HP unit on the first branch and set it as the master
unit.
Place the 22HP and 12HP units on the next branches and set
them as slave units.
Check port (used to measure
system pressure, charge
refrigerant and vacuumize)
Fig.4-8
Detail R1, R2
77
63
50
Liquid pipe
connection
port (ΦA)
Gas pipe
connection
port (ΦB)
Fig.4-9 Detail R3
Fig.4-10
Check port (used to measure
system pressure, charge
refrigerant and vacuumize)
Liquid pipe
connection
port (ΦA)
Gas pipe
connection
port (ΦB)
55
63
62
C(12HP)B(22HP)A(32HP)
Indoor
unit A
Indoor
unit B
Indoor
unit C
First outdoor
branch joint
Outdoor units
(66HP)