Mitsubishi Electric Mir.SLIM SUZ-KA09NA Manuel D'installation page 5

(inch)
A
A
Flare cutting dimensions
B
Flare nut tightening torque
1) Remove service port cap of stop valve on the side of the outdoor unit gas pipe.
2) Connect gauge manifold valve and vacuum pump to service port of stop valve on
the gas pipe side of the outdoor unit.
Stop valve cap
*4 to 5 turns
*Close
Stop valve for
LIQUID
Hexagonal
wrench
Service port cap
(Torque 13.7 to 17.7
Precautions when using the control valve
Service port
A
Control valve
Close Charge hose
Body
A
Liquid pipe
B
Gas pipe
C
Insulation
D
Taping
B
C
D
–0.101 MPa
Compound pressure gauge
(–30 in.Hg
(for R410A)
[–760 mmHg])
Pressure gauge
(for R410A)
Gauge manifold valve
(for R410A)
Handle
Handle High
Low
Charge hose
Stop valve for
(for R410A)
GAS
Adapter for
preventing the
pump with the function to
service port, valve core may deform or
loosen if excess pressure is applied.
This may cause gas leak.
service port, make sure that the valve
core is in closed position, and then
tighten part A. Do not tighten part A
or turn the body when valve core is in
open position.
age.
[Fig. 4-5]
A
completed.
Gas side
Liquid side
even a pipe extraction may occur.
may result.
1
Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
2
Flare the liquid pipes and gas pipes and apply a thin layer of refrigerant oil
(Applied on site).
Warning:
1. Loosen the nut until you hear a hissing noise.
ing noise stops)
3.
A
(Fig. 4-5)
Flare dimensions
Pipe diameter
inch (mm) inch
1/4" (6.35) 11/32 - 23/64
3/8" 1/2 - 33/64
1/2" (12.7) 41/64 - 21/32
5/8" (15.88)
3) Run the vacuum pump 15 minutes or more.
4) Check the vacuum with the gauge manifold valve, then close it and shut off the
vacuum pump.
5) Leave as it is for one or two minutes. Make sure pointer gauge manifold valve
[Gauge] (-30 in.Hg [-760 mmHg]).
6) Quickly remove gauge manifold valve from service port of stop valve.
7) After refrigerant pipes are connected and evacuated, fully open all stop valves on
valves lowers the performance and causes problems.
8) Refer to 4.1. Refrigerant pipe, and charge the prescribed amount of refrigerant if
of the refrigerant in the system may be changed and affect performance of the air
conditioner.
10) Conduct a leak test
B
C
D
1/2 (12.7)
1/4 (6.35) 1/4 (6.35)
øA dimensions
(mm)
(12.8 - 13.2)
(16.2 - 16.6)
-
-
5