5
4. Refrigerant piping work
4.5. Purging procedures leak test
5. Electrical work
5.1. Outdoor unit (Fig. 5-1, Fig. 5-2, Fig. 5-3, Fig. 5-4)
1
Remove the service panel.
2
Wire the cables referring to the Fig. 5-1, Fig. 5-2, Fig. 5-3 and the Fig. 5-4.
Fig. 5-1
S3
S3
S2
S1
1
S
2
S
L N
2
1
A
Indoor unit
B
Outdoor unit
C
Wired main switch (Earth leakage breaker)
D
Earth
For Power supply
PURGING PROCEDURES
Connect the refrigerant pipes (both the liquid and gas pipes) between the
indoor and the outdoor units.
Remove the service port cap of the stop valve on the side of the outdoor unit
gas pipe. (The stop valve will not work in its initial state fresh out of the factory
(totally closed with cap on).)
Connect the gage manifold valve and the vacuum pump to the service port of
the stop valve on the gas pipe side of the outdoor unit.
Run the vacuum pump. (Vacuumize for more than 15 minutes.)
Check the vacuum with the gage manifold valve, then close the gage manifold
valve, and stop the vacuum pump.
Leave it as is for one or two minutes. Make sure the pointer of the gage mani-
fold valve remains in the same position. Con
fi
rm that the pressure gage show
-0.101 MPa (-760 mmHg)
Remove the gage manifold valve quickly from the service port of the stop valve.
After refrigerant pipes are connected and evacuated, fully open all stop valves
on gas and liquid pipe sides.
Operating without fully opening lowers the performance and causes trouble.
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
Pipe length :
7 m maximum
No gas charge is needed.
Pipe length exceeding 7 m
Charge the prescribed
amount of gas.
*Open
*Close
Hexagonal wrench
Stop valve
Stop valve
Service port
Charge hose
(for R410A)
-0.101 MPa
(-760 mmHg)
Compound pressure
gauge (for R410A)
Pressure gauge
(for R410A)
Gauge manifold
valve (for R410A)
Handle High
Charge hose
(for R410A)
(or the vacuum
pump with
the function
to prevent the
back
fl
ow)
Adapter for
preventing
the back
fl
ow
Window
Vacuum
pump
Stop
valve
Handle
Low
*4 to 5 turns
■
SUZ-SA71VA2
SUZ-SA100VA
