AEG EXN09C58HW Installation Manual page 18

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Fig.3.6.1
3.6.2 Caution in handling the
1. Operation of opening packed valve:
Open the valve stem until it hits
against the stopper. Do not try to open
it further.
2. Operation of closing packed valve:
Securely tighten the valve stem with a
special tool. Then securely tighten the
valve stem cap with a spanner or the
like. Refer to the table on page 15 for
valve cap tightening torque.
Fig.3.6.2-1
Outdoor
Unit
Hi stop valve
(2-way valve)
NOTE:
• There is a charging port integrated
in the low side outlet, but not in the
high side outlet. The low side outlet is
shown in the sketch map below.
packed valve integrated in
the outlets of outdoor unit
Refrigerant
Lo stop valve
(3-way valve)
Gas side
Liquid side
Fig.3.6.2-2
Valve body
3.6.3 When using the vacuum
For method of using a manifold valve,
refer to its operation manual.
Indoor
1. Completely tighten the flare nuts
Unit
at connection point A, B, C and D.
Connect valve core removal tool to the
charging port, then connect vacuum
hose to valve core tool. Open the
schrader valve.
Half union
NOTE:
• The schrader valve is inside the
charging port.
2. Connect the other charge hose of
manifold valve to the vacuum pump.
3. Fully open the Low Side handle of the
manifold valve.
Charge port
Valve stem
Stopper
pump
Flare nut
Cap