Installation Tools; Refrigerant Piping; Pipe Connection - Mitsubishi SCM45ZD-S Technical Manual & Parts List

5 INSTALLATION
R410A refrigerant is used for this air-conditioner. Execute the installation work while taking care of the following points in addition
tothe general caution items.

5.1 Installation tools

Prepare the following special tools for R410A in addition to the general-purpose tools.
● Flare tool
● Gauge manifold
● Charge hose

5.2 Refrigerant piping

● Use the copper pipe that has less than 40 mg/10 m of oil adhesion and 0.8 mm of wall thickness. Never use the thin walled pipe
thethickness of which is less than 0.8 mm.
● Use the flare nut attached to the air-conditioner.

5.3 Pipe connection

(1) Pipe working
Copper pipe dia.
Liquid side ø6.35
Gas side
(2) Tightening torque
● The tightening torque is shown below.
Copper pipe dia.
Liquid side
ø6.35
ø9.52
Gas side
ø12.7
(3) Vacuuming
● The charge hose for R22 cannot be connected because the service port diameter is different from the conventional one. Usethe
special charge hose for R410A.
● Use the vacuum pump adapter for reverse flow prevention to check the reverse flow of vacuum pump oil. If oil flows back tothe
air-conditioner, it causes failure of refrigerant cycle.
● Vacuum pump adaptor
● Leak detector
Dimension "A" (mm)
9.1
ø9.52 13.2
ø12.7 16.6
Across flats of flare nut Tightening torque
N · m (kgf · m)
(mm)
17 14 ~ 18 (1.4 ~ 1.8)
22 33 ~ 42 (3.3 ~ 4.2)
24 50 ~ 62 (5.0 ~ 6.2)
(-76cmHg)
Handle Lo
Charge Hose
(Special for R410A)
Vacuum pump adaptor
(For reverse flow prevention)
(Special for R410A)
Dimension "B"
Flare tool bar
Copper pipe
Compound Pressure
pressure gauge gauge
-101kPa
Handle Hi
Charge hose
(Special for R410A)
Vacuum Pump
33
- -
Dimension "B" (mm)
Copper pipe dia.
Clutch type flare tool for R410A
ø6.35
ø9.52
ø12.7
Gauge manifold
(Special for R410A)
0.0 ~ 0.5
0.0 ~ 0.5
0.0 ~ 0.5