Hitachi UTOPIA R32 Series Installation & Operation 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:
Maximum Allowable Pressure (MPa) High Pressure Switch Cut-out Value (MPa)
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as
PSH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.
Center of
gravity
a
h
b
a: 610 mm
b: 195 mm
h: 490 mm
Weight (kg)
Refrigerant Model Net Gross
R32 & R410A 1 Ph 84 97
R32 & R410A 3 Ph 86 99
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
PMML0545 rev.2 - 04/2021
3
EN

Hitachi UTOPIA R32 Series Specifications

General

Brand	Hitachi
Model	UTOPIA R32 Series
Category	Air Conditioner
Language	English