Hitachi RAS-10FSXNPE, Instruction Manual

Page: 39 / 170

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.
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• 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
3
(ammonium),
as 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.
8.3.1 Accessories factory-supplied with FSXNSE units
accessory 8HP 10HP 12HP 14HP 16HP 18HP 20HP 22HP 24HP remarks
Accessory Pipe
ID22.2
→OD19.05
ID22.2
→OD19.05
ID22.2
→OD25.4
ID22.2
→OD28.58
ID22.2
→OD28.58
ID22.2
→OD28.58
ID22.2
→OD28.58
ID22.2
→OD25.4
ID22.2
→OD25.4
-
ID22.2
→OD15.88
-
OD9.52
→OD12.7
-
ID25.4
→OD28.58
ID25.4
→OD28.58
-
ID22.2
→OD28.58
ID22.2
→OD28.58
-
- - - - -
OD12.7
→OD15.88
- - - -
Cord Clamp
For Fixing Power
Source Wire
-
Rubber Bush
For Power Source
Wire Outlet (Bottom
Base, Piping Cover)
×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2
Ø70
For Transmission
Wire Outlet (Bottom
Base, Piping Cover)
×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2
Ø62
For Control Wire
Outlet (Bottom Base,
Piping Cover)
×2 ×2 ×2 ×2 ×2
×2
×2 ×2 ×2
Ø38
Screw
×3 ×3 ×3 ×3 ×3 ×3 ×3 ×3 ×3
for Fixing Cord
Clamp and
Spare
Combination
Unit Model
Label
For Indication of
Combination Unit
Model
Attach to
Outdoor Unit A
(Main Unit)
Protection plastic film
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Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit.
ENGLISH
PIPING WORK AND REFRIGERANT CHARGE
PMML0479 rev.4 - 11/2018 17