Toshiba MMU-AP0092H, Installation Manual

Toshiba

– 12 –

SMMS 4-way Air Discharge Cassette Type

Installation Manual

EN

5

DRAIN PIPING WORK

CAUTION

•

Following the Installation Manual, perform 
the drain piping work so that water is 
properly drained, and apply a heat insulation 
so as not to cause a dew droping.
Inappropriate piping work may result in water 
leakage in the room and wet of furniture.

„

Piping/Heat insulating material

Require the following materials for piping and heat 
insulating at site.

„

Flexible hose

Use the attached flexible hose to adjust center 
discrepancy of the hard vinyl chloride pipe or to 
adjust the angle.
• Do not use the flexible hose as stretched, or do 

not deform it more extent than that in the 
following figure.

• Be sure to fix the soft end of the flexible hose 

with the attached hose band.

• Use the flexible hose on a horizontal level.

REQUIREMENT

• Be sure to perform heat insulation of the drain 

pipes of the indoor unit.

• Never forget to perform heat insulation of the 

connecting part with the indoor unit. 
An incomplete heat insulation causes dew droping.

• Set the drain pipe with downward slope (1/100 

or more), and do not make swelling or trap on 
the piping. It may cause an abnormal sound.

• For length of the traversing drain pipe, restrict 

to 20m or less.
In case of a long pipe, provide support 
brackets with interval of 1.5 to 2m in order to 
prevent waving.

• Set the collective piping as shown in the below 

figure.

• Be sure not to apply force to the connecting 

part of the drain pipe.

• The hard vinyl-chloride pipe cannot be directly 

connected to the drain pipe connecting port of 
the indoor unit.
For connection with the drain pipe connecting 
port, be sure to use/fix the attached flexible 
hose with the hose band, otherwise a damage 
or water leak is caused on the drain pipe 
connecting port.

Piping

Hard vinyl chloride pipe VP25 

(Outer dia. : Ø32mm)

Heat insulator

Foam polyethylene : 

Thickness 10mm or more

max

45˚

Riser (Trap)

90˚  Bend

max

45˚

OK

NO GOOD

Support 

bracket

1/100 or more 

downward

Heat insulator

1.5m to 2m

Arched

shape

Trap

NO 

GOOD

VP25

As long as possible (10cm)

Downward slope 

1/100 or more

VP30 or more

VP25

VP25

Drain pipe 

connecting port 

(Transparent)

Adhesive inhibited :

Use the attached flexible hose and hose band for 

connecting the drain hose to the clear drain socket.

If applying the adhesive, socket will be damaged and 

cause water leakage.

Align the attached hose band to 

the end of hose, set the 

tightening position upward, and 

then tighten it.

Flexible hose 

(Accessory)

Socket for VP25 vinyl chloride pipe 

(To be local procure)

Drain pipe 

connecting port 

(Hard socket)

VP25 vinyl chloride pipe 

(To be local procure)

Attached hose 

band

Attached flexible hose

Soft socket

Hard socket

Socket for VP25 

(To be local procure)

VP25 vinyl chloride 

pipe (To be local 

procure)

Indoor

 unit

Indoor uni

t

12-EN

+00EH99863501_6L_SMMS_4-way_IM1_printOnly.book  Page 12  Thursday, September 11, 2008  9:29 AM