Hitachi SET FREE Serie Manual De Instrucciones página 36

PIPING WORK AND REFRIGERANT CHARGE
8.3 PiPe ConneCtion
Cover the end of the pipe appropriately when it is to be inserted
through holes in walls and roofs, etc.
Keep the ends of the pipes covered while other installation work
is being carried out to avoid the entry of dampness or dirt.
Do not place the pipes directly on the ground without appropriate
protection or adhesive vinyl tape to cover the ends.
Where the pipe installation is not completed for a certain amount
of time, braze the ends of the pipe to seal. Then fill it with
oxygen-free nitrogen gas through a Schrader valve to avoid the
accumulation of humidity and/or contamination through dirt.
8.3.1 Accessories factory-supplied with FSXNSE units
accessory
Connection for
Refrigerant Low
Pressure Gas Pipe
Connection for
Refrigerant High /
Accessory
Low Pressure Gas
Pipe
Pipe
Connection for
Refrigerant Liquid
Pipe
For Fixing Power
Cord Clamp
Source Wire
For Power Source
Wire Outlet (Bottom
Base, Piping Cover)
For Transmission
Rubber Bush Wire Outlet (Bottom
Base, Piping Cover)
For Control Wire
Outlet (Bottom Base,
Piping Cover)
Screw
Combination For Indication of
Unit Model Combination Unit
Label Model
Protection plastic film
?
n o t e
Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit.
26 PMML0479 rev.2 - 02/2018
8HP 10HP 12HP
-
ID22.2 ID22.2
→OD19.05 →OD25.4
-
ID22.2 ID22.2
→OD15.88 →OD19.05
- -
OD9.52
→OD12.7
×2 ×2 ×2
×2 ×2 ×2
×2 ×2 ×2
×3 ×3 ×3
?
n o t e
• Where polyethylene foam insulation is used, a 10 mm thick layer
should be used for the liquid pipe and between 15 and 20 mm for the
gas pipe.
• Install the insulation after the pipe surface temperature has dropped
to the same temperature as that of the room, otherwise the insulation
may melt.
Do not use insulating material that contains NH
it could damage the copper in the pipe and subsequently cause
leaks.
Where the fitter has supplied his own branches, these should be
appropriately insulated to avoid decreases in capacity in line with
to environmental conditions and dew on the surface of the piping
due to low pressure.
14HP 16HP 18HP
-
ID25.4 ID25.4
→OD28.58 →OD28.58
- - -
- -
OD12.7
→OD15.88
×2 ×2 ×2
×2 ×2 ×2
×2 ×2 ×2
×3 ×3 ×3
(ammonium), as
3
20HP 22HP 24HP
- - -
-
ID22.2 ID22.2
→OD25.4 →OD25.4
- - -
×2 ×2 ×2
×2 ×2 ×2
×2 ×2 ×2
×3 ×3 ×3
remarks
Ø70
Ø62
Ø38
for Fixing Cord
Clamp and
Spare
Attach to
Outdoor Unit A
(Main Unit)