MXZ-3C30NA3 Installation Manual

En-6
4-2.GASCHARGE
Perform gas charge to unit.
1)Connectgascylindertotheserviceportofstopvalve.
2) Perform air purge of the pipe (or hose) coming from refrigerant gas cylinder.
3)Replenishspeciedamountoftherefrigerant,whileoperatingtheairconditionerforcooling.
Note:
Incaseofaddingrefrigerant,complywiththequantityspeciedfortherefrigeratingcycle.
CAUTION:
When charging the refrigerant system with additional refrigerant, be sure to use liquid refrigerant.
Adding gas refrigerant may change the composition of the refrigerant in the system and affect
normal operation of the air conditioner. Also, charge the liquid refrigerant slowly, otherwise the
compressorwillbelocked.
To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm water (under
104°F(40°C))duringcoldseason.Butneverusenakedreorsteam.
Union
Stopvalve
Liquid
pipe
Indoor
unit
Stopvalvewith
serviceport
Gas
pipe
Refrigerant gas
cylinder
operatingvalve
(for R410A)
Gauge manifold
valve(forR410A)
Charge hose
(for R410A)
Refrigerant gas cylinder for R410A with siphon
Electronic scale for refrigerant charging
Refrigerant (liquid)
Outdoor
unit
Union
Union
Union
* D unit is for
4C36NA2only.
4-3.LOCKINGTHEOPERATIONMODEOFTHEAIRCONDITIONER(COOL,DRY,HEAT)
4-4.LOWERINGTHEOPERATIONNOISEOFTHEOUTDOORUNIT
COOL/DRY HEAT
• Descriptionofthefunction:
 Withthisfunction,oncetheoperationmodeislockedtoeitherCOOL/DRYmode
orHEATmode,theairconditioneroperatesinthatmodeonly.
* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainabout
thisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.
[Howtolocktheoperationmode]
1)Besuretoturnoffthemainpower for the airconditionerbeforemakingthe
setting.
2)Setthe“3”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunction.
3)TolocktheoperationmodeinCOOL/DRYmode,setthe“4”ofSW1on the
outdoorcontrollerboardtoOFF.TolocktheoperationinHEATmode,setthe
same switch to ON.
4) Turn on the main power for the air conditioner.
• Descriptionofthefunction:
 Withthisfunction,theoperatingnoiseoftheoutdoorunitcanbeloweredbyreducingtheoperationload,forexample,duringnighttimeinCOOLmode.However,
pleasenotethatthecoolingandheatingcapacitymaylowerifthisfunctionisactivated.
* Changingthesettingisrequiredtoactivatethisfunction.Pleaseexplainaboutthisfunctiontoyourcustomersandaskthemwhethertheywanttouseit.
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
[Howtolowertheoperatingnoise]
1)Besuretoturnoffthemainpower for the airconditionerbeforemakingthe
setting.
2)Setthe“5”ofSW1ontheoutdoorcontrollerboardtoONtoenablethisfunction.
3)Turnonthemainpowerfortheairconditioner.
LED
SW1
SW871
SW2
Lower the operating noise
WG79A686H01_en.indd 6 11/24/2015 9:04:55 AM