Installation
a
CAUTION DANGER
– The Y joint must be installed horizontally.
An angle of more than 10° can cause
malfunctions.
– DO NOT install the connection pipe before
installing both the indoor and outdoor units.
– Insulate the gas side and liquid side pipes to
prevent water leaks.
Connection pipe sizes for the indoor unit.
Main pipe dimensions (mm)
Model
Gas side
70M
Ø 15.9 mm (5/8") Ø 9.52 mm (3/8")
105M
Ø 15.9 mm (5/8") Ø 9.52 mm (3/8")
Connection pipe sizes for the outdoor unit.
Based on the table below, select the diameters of the
connection pipes for the outdoor unit.
Main pipe dimensions (mm)
Model
Gas side
Ø 15.9 mm
105M-105T
(5/8")
Ø 15.9 mm
140T
(5/8")
Ø 15.9 mm
160T
(5/8")
10°
10°
Fig. 17
Liquid side
First
Liquid side
Y joint
Ø 9.52 mm
FQZHN-01D
(3/8")
Ø 9.52 mm
FQZHN-01D
(3/8")
Ø 9.52 mm
FQZHN-01D
(3/8")
To use the Y joint, cut the pipe following the diagram in
"Fig. 18" to fit the internal and external pipe.
Liquid pipes
165 ±10
Gas pipes
INDOOR UNIT CONFIGURATION
Set the SW1/SW5 switch
1 Master indoor unit: alternate 1 and 2 (one ON and the
other OFF)
2 Slave indoor unit: both 1 and 2 ON.
95 ±10
158 ±10
237 ±10
Fig. 18
2
1
Fig. 19
17