Installation

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needed when outdoor unit installed at a
lower place than indoor unit).
5. Refer to Appendix(3) for correlative
specs about the Pipe length and
additional refrigerant amount for split
type air conditioner.
3.6.2 Caution in handling the
packed valve integrated in the
outlets of outdoor unit
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.
Fig.3.6.2-1
Refrigerant
Indoor
Unit
Outdoor
Unit
Lo stop valve
(3-way valve)
Gas side
Liquid side
Hi stop valve
(2-way valve)
Half union
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.
Fig.3.6.2-2
Flare nut
Valve body
Charge port
Valve stem
Cap
Stopper
3.6.3 When using the vacuum
pump
For method of using a manifold valve, refer
to its operation manual.
1. Completely tighten the are nuts
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.
Outdoor unit
Piping length under 4m Piping length 4m or more
Outdoor unit
Oil trap
Indoor unit
Indoor unit
(A)
(A): Maximum Piping Length
(B): Maximum Piping Height
(A)
(B)
(B)
Fig.3.6.1