Mitsubishi Electric CITY MULTI PEFY-P-NMHU-E2 Installation Manual

6
GB
1.2. Precautions for devices that use
R410A or R407C refrigerant
Caution:
• Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping contains a
large amount of chlorine which may cause the refrigerator oil of the new
unit to deteriorate.
• Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized
copperasspeciedin theJISH3300“Copperand copper alloyseam-
lesspipesand tubes”.Inaddition,besure that theinnerandouter
surfacesofthepipesarecleanandfreeofhazardoussulphur,oxides,
dust/dirt,shavingparticles,oils,moisture,oranyothercontaminant.
- Contaminants on the inside of the refrigerant piping may cause the refrig-
erant residual oil to deteriorate.
• Storethepipingtobeusedduringinstallationindoorsandkeepboth
endsof the piping sealed until just beforebrazing.(Storeelbows and
otherjointsinaplasticbag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and
compressor trouble may result.
• Useesteroil,etheroiloralkylbenzene(smallamount)astherefrigera-
toroiltocoataresandangeconnections.
-
The refrigerator oil will degrade if it is mixed with a large amount of mineral
oil.
• Useliquidrefrigeranttollthesystem.
- If gas refrigerant is used to seal the system, the composition of the refrig-
erant in the cylinder will change and performance may drop.
• Do not use a refrigerant other than R410A or R407C.
- If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may
cause the refrigerator oil to deteriorate.
• Useavacuumpumpwithareverseowcheckvalve.
- Thevacuumpumpoilmayowbackintotherefrigerantcycleandcause
the refrigerator oil to deteriorate.
• Donotusethefollowingtoolsthatareusedwithconventionalrefriger-
ants.
(Gaugemanifold,chargehose,gasleakdetector,reverseowcheckvalve,
refrigerantchargebase,vacuumgauge,refrigerantrecoveryequipment.)
- If the conventional refrigerant and refrigerator oil are mixed in the R410A
or R407C, the refrigerant may deteriorated.
-
If water is mixed in the R410A or R407C, the refrigerator oil may deteriorate.
- SinceR410AorR407Cdoesnotcontainanychlorine,gasleakdetectors
for conventional refrigerants will not react to it.
• Donotuseachargingcylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
• Beespeciallycarefulwhenmanagingthetools.
-
If dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.
1.3. Beforegettinginstalled
Caution:
• Donotinstalltheunitwherecombustiblegasmayleak.
- Ifthegasleaksandaccumulatesaroundtheunit,anexplosionmayresult.
• Do not use the air conditioner where food, pets, plants, precision in-
struments,orartworkarekept.
- The quality of the food, etc. may deteriorate.
• Donotusetheairconditionerinspecialenvironments.
- Oil,steam,sulfuricsmoke,etc.cansignicantlyreducetheperformanceof
the air conditioner or damage its parts.
• Wheninstallingtheunitinahospital,communicationstation,orsimilar
place,providesufcientprotectionagainstnoise.
- The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air condi-
tioner to operate erroneously, or fail to operate. On the other hand, the
air conditioner may affect such equipment by creating noise that disturbs
medical treatment or image broadcasting.
• Donotinstalltheunitonastructurethatmaycauseleakage.
- When the room humidity exceeds 80 % or when the drain pipe is clogged,
condensation may drip from the indoor unit. Perform collective drainage
worktogetherwiththeoutdoorunit,asrequired.
• Theindoormodelsshouldbeinstalledtheceilingoverthan2.5mfrom
oor.
1.4. Beforegettinginstalled(moved)-elec-
tricalwork
Caution:
• Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or
telephonegroundlines.Impropergroundingmayresultinelectricshock.
• Installthepowercablesothattensionisnotappliedtothecable.
- Tensionmaycausethecabletobreakandgenerateheatandcauseare.
• Installanleakcircuitbreaker,asrequired.
- Ifanleakcircuitbreakerisnotinstalled,electricshockmayresult.
• Usepowerlinecablesofsufcientcurrentcarryingcapacityandrating.
- Cablesthataretoosmallmayleak,generateheat,andcauseare.
• Useonlyacircuitbreakerandfuseofthespeciedcapacity.
- Afuseorcircuitbreakerofalargercapacityorasteelorcopperwiremay
resultinageneralunitfailureorre.
• Donotwashtheairconditionerunits.
- Washingthemmaycauseanelectricshock.
• Becarefulthattheinstallationbaseisnotdamagedbylonguse.
- If the damage is left uncorrected, the unit may fall and cause personal in-
jury or property damage.
• Installthedrain pipingaccordingtothisInstallation Manualtoensure
properdrainage. Wrapthermal insulation around the pipestoprevent
condensation.
- Improperdrainpipingmaycausewaterleakageanddamagetofurniture
and other possessions.
• Beverycarefulaboutproducttransportation.
- Onlyonepersonshouldnotcarrytheproductifitweighsmorethan20kg.
- SomeproductsusePPbandsforpackaging.DonotuseanyPPbandsfor
a means of transportation. It is dangerous.
- Donottouchtheheatexchangerns.Doingsomaycutyourngers.
- When transporting theoutdoor unit, suspend it atthe specied positions
on the unit base. Also support the outdoor unit at four points so that it can-
not slip sideways.
• Safelydisposeofthepackingmaterials.
- Packing materials, such as nails and other metal or wooden parts, may
cause stabs or other injuries.
- Tearapartandthrowawayplasticpackagingbagssothatchildrenwillnot
play with them. If children play with a plastic bag which was not torn apart,
theyfacetheriskofsuffocation.
1.5. Before starting the test run
Caution:
• Turnonthepoweratleast12hoursbeforestartingoperation.
- Starting operation immediately after turning on the main power switch can
result in severe damage to internal parts. Keep the power switch turned on
during the operational season.
• Donottouchtheswitcheswithwetngers.
- Touchingaswitchwithwetngerscancauseelectricshock.
• Donottouchtherefrigerantpipesduringandimmediatelyafteropera-
tion.
- During and immediately after operation, the refrigerant pipes are may be
hot and may becold,depending on the conditionof the refrigerant ow-
ing through the refrigerant piping, compressor, and other refrigerant cycle
parts. Your hands may suffer burns or frostbite if you touch the refrigerant
pipes.
• Donotoperatetheairconditionerwiththepanelsandguardsremoved.
- Rotating, hot, or high-voltage parts can cause injuries.
• Donotturnoffthepowerimmediatelyafterstoppingoperation.
- Alwayswaitatleastveminutesbeforeturningoffthepower.Otherwise,
waterleakageandtroublemayoccur.
2.Indoorunitaccessories
The unit is provided with the following accessories:
No. Accessories Quantity
1
Insulation pipe (small) 1
2
Insulation pipe (large) 1
3
Tie band (small) 4
4
Tie band (large) 6
5
Drainsocket 2
6
Washer 8

Mitsubishi Electric CITY MULTI PEFY-P-NMHU-E2 Specifications

General

Brand	Mitsubishi Electric
Model	CITY MULTI PEFY-P-NMHU-E2
Category	Air Conditioner
Language	English