- Continued on back -
Do not remove the cap from the connection pipe before connecting
the pipe.
CAUTION
Be sure to connect the large pipe after connecting the small
pipe completely.
4
Body
Be sure to overlap the
insulation
Coupler heat insulation
No gap
Coupler heat insulation
INSTALLING THE COUPLER
HEAT INSULATION
After checking for gas leaks, insulate by wrapping insulation around the
two parts (large and small) of the indoor unit coupling, using the coupler
heat insulation.
After installing the coupler heat insulation, wrap both ends with vinyl tape
so that there is no gap.
CAUTION
Must fit tightly against body without any gap.
(3) When the flare nut is tightened properly by your hand, use a torque
wrench to finally tighten it.
Holding spanner
Body side
Torque wrench
CAUTION
Hold the torque wrench at its grip, keeping it in the right
angle with the pipe, in order to tighten the flare nut
correctly.
Flare nut Tightening torque
6.35 mm (1/4 in.) dia.
9.52 mm (3/8 in.) dia.
12.70 mm (1/2 in.) dia.
15.88 mm (5/8 in.) dia.
16 to 18 N·m (160 to 180 kgf·cm)
30 to 42 N·m (300 to 420 kgf·cm)
49 to 61 N·m (490 to 610 kgf·cm)
63 to 75 N·m (630 to 750 kgf·cm)
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