04-06
4-3. Refrigerant Piping Work
Flare less joint nut assy
4-3-1 The method of tightening
CAUTION
Do not remove the tightening nut and fixing nut that are attached to the indoor unit.
(image below) (the interior O-ring has been removed)
If the fl are less joint nut assy has been loosened after it has been completely tightened,
replace with a new fl are less joint nut assy.
When removing the piping to relocate or repair the unit, replace with a new fl are less
joint nut assy.
Tightening nut
(hexagon)
Guard
Joint (Indoor unit pipe)
Indoor unit pipe
(Body side)
Mark the margin around the connection pipe
for inserting into the flare less joint nut assy.
L
Connection pipe dia. [mm (in.)]
L [mm]
6.35 (1/4) dia.
9.52 (3/8) dia.
22
23
Step-2. Peel off the seal
Peel off the seal on the tightening nut.
Connection pipe
Step-1. Mark the margin around the connection pipe
Seal
Fixing nut (circular)
(Guard covers the fixing nut)
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