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Installation Manual - Page 7

For MXZ-6E120VAD.

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En-6
4-3. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)
4-4. LOWERING THE OPERATION NOISE OF THE OUTDOOR UNIT
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refrigerat-
ing 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refriger-
ant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40°C)duringcoldseason.Butneverusenakedreorsteam.
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func-
tion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.
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
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
Lowertheoperatingnoise
[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
Terminalblock
forDREDInterface
BH79A274H01_en.indd 6 2016/03/23 10:42:18
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