Haier AD28NAMBEA(ECO) Installation Manual For Indoor Unit, Installation work for air outlet ducts

Installation Manual For Indoor Unit

(d)When constructing drain piping for several units, position the common pipe about 100 mm below the drain outlet of each unit as shown in the sketch. Use VP-30(11/4") or thicker pipe for this purpose.

(e)Be sure to provide heat insulation to hard PVC pipes of indoor placement.

(f)Do not ever provide an air vent.

(g)Avoid positioning the drain piping outlet at a place where generation of odor may be stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate.

Secure the elevation as high as possible (approx. 100 mm)

(7) Installation work for air outlet ducts

A downhill grade of	VP 30
1/100 or more

Air conditioner main unit

	Heat	inlet duct
Ceiling surface	insulation	(optional or	Suction panel
	marketat item)		(Silent panel)
B Special blowout	A Blowout duct	C	special inlet (option)
(Option)	(Optional or marketed item)		(with air filter)

Hole for check

Calculate the draft and external static pressure and select the length, shape and blowout.

ABlowout duct

2-spot, 3-spot and 4-spot with 200 type duct are the standard specifications. Determine the number of spots based on following table.

Note (1) Shield the central blowout hole for 2-spot.

(2) Shield the blowout hole around the center for 3-spot.

Limit the difference in length between spots at less than 2:1. Reduce the length of duct as much as possible.

Reduce the number of bends as much as possible. (Corner R should be as larger as possible.)

Bad example Bad example Good example

Use a band. etc. to connect the main unit and the blowout duct flange.

Conduct the duct installation work before finishing the ceiling.

(8) Connection of suction, exhaust ducts

		State seeing from top of unit
		Exhaust hole
		Side fresh air inlet
(a) Duct connection position		Rear fresh air inlet
	Fig.1	Fig.2

i) Fresh air inlet

Inlet can be selected from the side or rear faces depending on the working conditions. Use the rear fresh air inlet when the simultaneous intake and exhaust is conducted. (Side inlet cannot be used.)

ii)Exhaust (Make sure to use also the suction.) Use the side exhaust port.

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