Panasonic S-3650PU3E Technical Data & Service Manual page 143

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Connecting Tubing Between Indoor and Outdoor Units
(1) Tightly connect the indoor-side refrigerant tubing extended from the wall with the outdoor-side tubing.
Indoor Unit Tubing Connection
Indoor unit type S-3650PF3E
Gas tube ø12.7
Liquid tube ø6.35
Different-diameter-tube joint for the indoor unit tubing connection part is supplied with S-6071PF3E.
The size of parenthesis indicates the connection tube diameter when using the different-diameter-tube joint.
How to use different-diameter-tube joint (supplied)
1) When using with single connection
• Outdoor PZ3 series (Type 60)
Connect the liquid socket tube B (ø6.35 - ø9.52)
to the liquid tubing side indoor unit
Liquid tube (ø6.35)
Gas tube (ø12.7)
Connect the gas socket tube A (ø12.7 - ø15.88)
to the gas tubing side indoor unit
• Outdoor PZ3 series (Type 71)
Liquid tube (ø6.35)
Gas tube (ø15.88)
Connect the liquid socket tube B (ø6.35 - ø9.52)
to the liquid tubing side indoor unit
(2) To fasten the flare nuts, apply specified torque.
● When removing the flare nuts from the tubing connections, or when tightening them after connecting the tubing,
be sure to use two spanners. When tightening the flare nuts, use a torque wrench.
If the flare nuts are over-tightened, the flare may be damaged, which could result in refrigerant leakage and
cause injury or asphyxiation to room occupants.
Torque wrench
Indoor unit
Outdoor unit
Unit : mm
S-6071PF3E
ø15.88
ø9.52
Spanner
1-11-1-2-24
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