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User Manual - Page 9

For 1310025.

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English
• The refrigerant is pre-charged in the outdoor unit.
Torque wrench
Piping union
Flare nut
Spanner
Tighten
Fig. 9
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration
oil only to the inner
surfaceoftheare.
Do not apply refrigeration oil to
thearenuttoavoidtightening
withexcessivetorque.
Apply oil
Fig. 10
CAUTION
Donothaveoiladheretothescrewxingpartofresin
parts.
If oil adheres, it may weaken the strength of screwed part.
Donottightenarenutstootight.
Ifaarenutcracks,therefrigerantmayleak.
Insulationofeldpipingmustbecarriedoutuptothe
connection inside the casing.
If the piping is exposed to the atmosphere, it may cause
sweating, burn due to touching the piping, electric shock or a
reduetothewiringtouchingthepiping.
•
After leak test, referring to Fig. 11, insulate both the gas and
liquidpipingconnectionwiththeattachedttinginsulation
(4) and (5) to prevent the pipings from getting exposed.
Then, tighten both the ends of insulating material with the clamp (8).
•
Wrapthesealingpad(Medium)(7)aroundthettinginsulation
(4)and(5)(arenutsection),boththegasandliquidpiping.
• Makesuretobringtheseamofttinginsulation(4)and(5)
to the top.
Gas piping
Liquid piping
Fitting
insulation (4)
Liquid Piping Insulation Procedure
Unit
Unit
Clamp (8)
Clamp (8)
Piping
insulating
material
(eldsupply)
Gas Piping Insulation Procedure
Fitting
insulation (5)
Piping insulating
material (unit)
Bring the
seam
to the top.
Flare nut
connection
Piping
insulating
material
(eldsupply)
Do not leave
clearance.
Flare nut
connection
Bring the
seam
to the top.
Do not leave
clearance.
Piping insulating
material (unit)
Wind around the
piping until top of the
arenutconnection,
beginning at the base.
Do not expose the
piping in order to
prevent the vapor
condensation.
Tighten the portion
whereoverlappedby
the piping insulating
material.
Tighten the portion
whereoverlappedby
the piping insulating
material.
Do not expose the
piping in order to
prevent the vapor
condensation.
Wind around the
piping,beginning
at the base.
Sealing pad
(Medium) (7)
Sealing pad
(Medium) (7)
Fig. 11
NOTE
1. In case of refrigerant shortage due to forgetting additional
refrigerant charge etc., it will result in malfunc tion such as
does not cool or does not heat.
Refer to the outdoor unit installation manual or technical
document for refrigerant piping.
English 8
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