Hitachi YUTAKI RWM-2R1E Instruction Manual


Suspended unit
Suspend the unit as the drawing
indicates.
Ensure that wall can resist the Outdoor
unit weight indicated in specication label
plate.
It is recommended to select each foot
support to bear the full weight of the
unit (in order to consider stress fatigue
applied when unit is working too).
Wall bracket (*)
Anchor Bolts (*)
(*) Field supplied
! CAUTION
Pay attention to the following for installation:
Installation shall ensure that outdoor unit
will not incline, vibrate, make noise or fall
down by a blast of wind or in an earthquake.
Calculate quake-resistance strength to ensure
that installation is strong enough against
falling. Fix the unit with wires (eld supplied)
when installing in a location without walls or
windbreak and likely exposed to a blast of
wind.
To use a vibration-proof mat, x four places to
the front and back.

Installing location where the unit will be exposed to strong wind
Follow the instructions below to install
on the rooftop or a location without
surrounding buildings, where strong wind
is expected against the product.
Choose a location where the outlet
or inlet side of the product will not be
exposed to strong wind.
When the outlet is exposed to strong
wind:
Direct strong wind may cause lack
of air ow and adversely affect to the
operation.
! CAUTION
Excessive strong wind against the outdoor
unit outlet may cause inverse rotation and
damage the fan and motor.
8 REFRIGERANT PIPING & REFRIGERANT CHARGE
8.1 PIPING MATERIALS
1 Prepare locally-supplied copper pipes.
2 Select the piping size with the correct thickness and correct
material which can have sufcient pressure strength.
3 Select clean copper pipes. Make sure there is no dust and
moisture inside. Blow the inside of the pipes with oxygen
free nitrogen to remove any dust and foreign materials
before connecting pipes.
? NOTE
• Asystem withnomoistureor oilcontaminationwill givemaximum
performance and lifecycle compared to that of a poorly prepared
system.Takeparticularcaretoensurethatallcopperpipingisclean
anddryinternally.
• Thereisnorefrigerantinthecycleoftheindoorunit.
! CAUTION
• Captheendofthepipewhenpipeistobeinsertedthroughahole.
• Donotputpipesonthegrounddirectlywithoutacaporvinyltapeat
theendofthepipe.
• Ifpipinginstallationisnotcompleteduntilnextdayoroveralonger
period of time, braze off the ends of the piping and charge with
oxygenfreenitrogenthroughaSchradervalvetypeaccessttingto
preventmoistureandparticlecontamination.
• Do not use insulation material that contains NH
3
 because it can
damagecopperpipematerialandcanbeasourceoffutureleakage.
• Completely insulate both refrigerant gas piping and liquid piping
betweentheindoorunitandtheoutdoorunit.
• Ifnotinsulated,dewwillocuronthepipingsurface.
REFRIGERANT PIPING & REFRIGERANT CHARGE
PMML0372B rev.5 - 01/2021
8

Hitachi YUTAKI RWM-2R1E Specifications

General

Brand	Hitachi
Model	YUTAKI RWM-2R1E
Category	Air Conditioner
Language	English