Haier AD842AHEAA, AU84NATEAA Indoor Unit Installation of air suction and discharging duct

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Installation Precedure

Indoor Unit

6. Installation of air suction and discharging duct

Please consult the after-sales service personnel for the choosing and installation of suction inlet, suction duct, discharging outlet and discharging duct. Calculating the design drawing and outer static pressure, and choose the discharging duct with proper length and shape.

muffler cavity (air sending)

 

 

Sacking joint

 

Enlarging chart of profile chart A

 

 

 

 

Insulation

 

A

Air volume adjuster

 

 

Air outlet

Air conditioner

Ceiling

 

 

main unit

 

Vibration resistance hook

 

 

Air suction grille with air filter

 

 

Checking meatus

 

The length difference among every duct is limited below 2:1.

Reduce the length of duct as possible as can.

Reduce the amount of bend as possible as can.

Use heat insulation material to bind and seal the part connecting main unit and the flare part of air discharging duct. Perform duct installation work, before the fitment of ceiling.

7. Calculation method of the dimension of the simple quadrate air duct

Presuming the unit length friction impedance of the duct is 1Pa/m, when the dimension of one side of the air duct is fixed as 250mm, as shown below:

 

AD842AHEAA

B

 

Air volume

Duct

 

A

2400m3/h(40m3/min)

250x560(mmxmm)

 

B

600m3/h(10m3/min)

250x190(mmxmm)

 

Bad example

Bad example

Good example

 

 

 

AAir conditioner

 

A

 

A

Static pressure

Equipped with

 

box

air filter (bought)

The calculation of duct resistance (the simple calculation is as follow table)

Straight part

Calculate as per 1m length 1Pa, 1Pa/m

 

 

Bend part

Each bend takes as a 3~4m long straight duct

 

 

Air out part

Calculate as 25Pa

 

 

Static pressure box

Calculate as 50Pa/each

 

 

Air inlet grille (with air filter)

Calculate as 40Pa/each

 

 

The chosen chart of simple duct Note:1Pa/m=0.1mmAg/m

Shape

Square duct

Air volume

Item

Dimension

m3/h(m3/n)

 

(mmxmm)

100

 

250 x 60

200

 

250 x 90

300

 

250 x 120

400

 

250 x 140

500

 

250 x 170

600(10)

 

250 x 190

800

 

250 x 230

1,000

 

250 x 270

1,200(20)

 

250 x 310

1,400

 

250 x 350

1,600

 

250 x 390

Shape

Square duct

Air volume Item

Dimension

m3/h(m3/n)

(mmxmm)

1,800(30)

250 x 430

2000

250 x 470

2400

250 x 560

3,000(50)

250 x 650

3,500

250 x 740

4,000

250 x 830

4,500

250 x 920

5,000

250 x 1000

5,500

250 x 1090

6,000(100)

250 x 1180

17

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Contents Duct Type AIR Conditioner Contents Safety Instructions and Warnings Disposal of the old air conditionerDisposal of the packaging of your new air conditioner Safety Precautions Shock Machine is adaptive in following situation Parts and Functions Indoor UnitOutdoor Unit Heating Mode HOT Keep functionWarming Operation Care and Maintenance Troubleshooting Cooling or heating is not sufficientCooling Is not sufficient Shuru Followings are not malfunctionShows resumable fault, shows it is not resumable fault Diagnosis for On-Off modelsPrecaution for Installation Safety precautionsFor inspection and maintenance Is the Unit Installed CorrectlyWhen you change your address or the installation place Electric workInstallation Precedure Height of ceilingIndoor Unit Preparation before installation Installing indoor unitAdjusting to the levelness Procedures Indoor Unit Drain PipingDrainage Test Indoor Unit Installation of air suction and discharging duct Chosen chart of simple duct Note1Pa/m=0.1mmAg/mExamples of improper installation Refrigerant pipeInstalltion space Outdoor Unit Selecting the installation place WarningDimension of outdoor unit Delivery of outdoor unitOutdoor Unit Mounting outdoor unit During welding of the distribution pipe Outdoor Unit Connection of refrigerant pipe WarningConnection of refrigerant pipe Outdoor unit pipelines connectionOutdoor Unit Leak Test Check if the pressure decreaseCheck for leakage Outdoor Unit Pipe Vacuumizing Indoor unit Outdoor unitRefill refrigerant Outdoor Unit Refrigerant chargeCalculation of the the refrigerant charge Open all valvesSelection of size of power supply and interconnecting wires Electrical WiringPrecautions for Electrical wiring Wiring connectionPage Haier Group

AU84NATEAA, AD842AHEAA specifications

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