Mitsubishi Electric MXZ-5B100VA Installation Manual download pdf (Page 7)

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condi

tioner 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

refrigerantinthesystemandaffectnormaloperationoftheairconditioner.Also,

chargethesystem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.

Lower the operating

noise

HEAT

COOL/DRY

• Descriptionofthefunction:

 Withthisfunction,youcanlocktheoperationmodeoftheoutdoorunit.Once

the operation mode is locked to either COOL/DRY mode or HEAT mode, the

airconditioneroperatesinthatmodeonly.

* Initial 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 1st Dip Switch of SW1 on the outdoor controller board to ON to en

able this function.

3) To lock the operation mode in COOL/DRY mode, set the 2nd Dip Switch 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,youcanlowertheoperatingnoiseoftheoutdoorunitwhen

the operation load is small, for example, during nighttime in COOL mode.

However,pleasenotethatthecoolingandheatingcapacitycanalsobelow

ered if this function is activated.

* Initial 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 lower the operating noise]

1) Be sure to turn off the main power for the air conditioner before making the

setting.

2) Set the 3rd Dip Switch of SW1 on the outdoor controller board to ON to en

able this function.

3) Turn on the main power for the air conditioner.

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

*Eunitisfor

5B100VAonly.

Union

4-5. CHANGING THE AMPERE LIMIT

• Descriptionofthefunction:

 Withthisfunction,youcanchangethecurrentthatowsintheoutdoorunit.

Note:

Usethisfunctiononlywhentheamountofcurrentexceedstheallowedvalue.

[How to change the ampere limit]

1) Be sure to turn off the main power for the air conditioner before making the

setting.

2) Make the setting referring to the table below.

3) Turn on the main power for the air conditioner.

SW2 MXZ-5B100VA MXZ-4B80VA

10.5 A 10.5 A

15.5 A 15.5 A

Factorysetting

Full

Factorysetting

Full

MXZ-4B_5BVA-A1 JG79A313H01.indd 7 2009/10/13 10:18:02

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Mitsubishi Electric MXZ-5B100VA Installation Manual Page 7

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