Hitachi YUTAKI RWM-2R1E Instruction Manual

Start-up and Operation: Checktoensurethatallthestopvalvesarefullyopenedandnoobstacleexistsattheinlet/outletsides
beforestart-upandduringtheoperation.
Maintenance:Periodicallycheckthehighpressuresidepressure.Ifthepressureishigherthanthemaximumallowablepressure,
stopthesystemandcleantheheatexchangerorremovethecause.
Maximum Allowable Pressure and High Pressure Cut-out Value:
Refrigerant Maximum Allowable Pressure (MPa) High Pressure Switch Cut-out Value (MPa)
R410A 4.15 4.00 ~ 4.10
? NOTE
ThelabelforthevesselunderPEDareattachedonthehighpressurevessel.Thepressurevesselcapacityandvesselcategoryareindicatedonthe
vessel.
Location of High Pressure Switch
Compressor
? NOTE
Thehighpressureswitchisindicatedontheelectricalwiringdiagramin
theoutdoorunitasHPSconnectedtoprintedcircuitboard(PCB1)inthe
outdoorunit.
Structure of High Pressure Switch
Contact Point Pressure Detected
Connected to the electrical wire
! DANGER
• Donotchangethehigh-pressureswitchlocallyorchangethe
highpressurecut-outsetvaluelocally.Ifchanged,itwillcause
seriousinjuryordeathduetoexplosion.
• Donotattempttoturnservicevalverodbeyonditsstop.
4 TRANSPORTATION AND HANDLING
When hanging the unit, ensure a balance of the unit, check
safety and lift it up smoothly.
Do not remove any packing materials.
Hang the unit under packing condition with two ropes.
For safety reasons ensure that the outdoor unit is lifted smoothly
and does not lean.
Model Gross Weight (kg)
RAS-(4-6)WH(V)NPE 116
RAS-8WHNPE 152
RAS-10WHNPE 154
RAS-(4-10)WH(V)NPE
0.7 -1.0
m
> 60º
5 BEFORE OPERATION
! CAUTION
• Supply electrical power to the system for approximately 12 hours
before start-up or a long shutdown. Do not start the system
immediatelyafterpowersupply,itmaycauseacompressorfailure
becausethecompressorisnotheatedwell.
• Whenthesystemisstartedafterashutdownlongerthatapproximately
3months,itisrecommendedto check thesystem by yourservice
contractor.
• TurnOFFthemainswitchwhenthesystemistobestoppedforalong
periodoftime:IfthemainswitchisnotturnedOFF,electricitywillbe
used,becausetheoilheaterisalwaysenergisedduringcompressor
stopping.
• Makesurethattheoutdoorunitisnotcoveredwithsnoworice.If
covered,removeitbyusinghotwater (approximately50°C).If the
watertemperatureishigherthan50°C,itwillcausedamagetoplastic
parts.
TRANSPORTATION AND HANDLING
PMML0372B rev.5 - 01/2021
3
EN

Hitachi YUTAKI RWM-2R1E Specifications

General

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