Drain Piping, Installation of indoor unit

Installation Manual For Indoor Unit

4. Installation of indoor unit

M10 nut

Fix the indoor unit to the hanger bolts.

If required, it is possible to suspend the unit to the beam, etc.

Directly by use of the bolts without using the hanger bolts.

Main unit

Note

Hanging bolt M10 washer

M10 spring washer

When the dimensions of main unit and ceiling holes does not match, it can be adjusted with the slot holes of hanging bracket.

Adjusting to the levelness

(a)Adjust the out-of levelness using a level or by the following method.

Make adjustment so that the relation between the lower surface of the unit proper and water level in the hose becomes as given below.

Piping side Supply water

Water level

0~5 mm	PVC hose

(0~0.2")

Bring the piping side slightly lower.

(b)Unless the adjustment to the levelness is made properly, malfunctioning or failure of the float switch may occur.

5.Drain Piping

(a)Drain piping should always be in a downhill grade (1/50~1/100) and avoid riding across an elevation or making traps.

Good piping

Suspension	1.5m ~ 2m
bolts	1.5m ~ 2m
Heat	A downhill grade
insulation	of 1/100 or more

Inproper piping
	Avoid riding across an elevation
Air vent	Keep free from traps
	Do not pipe under water

(b)When connecting the drain pipe to unit, pay suffcient attention not to apply excess force to the piping on the unit side. Also, fix the piping at a point as close as possible to the unit.

(c)For drain pipe, use hard PVC general purpose pipe VP-25(I.D.1") which can be purchased locally. When connecting, insert a PVC pipe end securely into the drain socket before tightening securely using the attached drain hose and clamp. Adhesive must not be used connection of the drain socket and drain hose (accessory).

	Stage
Drain socket	difference	Drain hose
Drain socket	part
Drain socket		VP 25 joint
		VP 25 joint

	Pipe cover(large)		(field purchased)
	[for insulation]
Main unit	(accessory)
Main unit
	Drain hose		VP 25
	Clamp (accessory)		(field purchased)
	(accessory)	Adhesion	Pipe cover
		Adhesion	Pipe cover
	Pipe cover(small)		[for insulation]
	Pipe cover(small)		(field purchased)
	[for insulation]		(field purchased)
	[for insulation]
	(accessory)

HDU-42CF03/H specifications

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