Drain Piping Work - Toshiba SUPER MODULAR MULTI MML-AP0071H Installationshandbuch

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DRAIN PIPING WORK

• 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. Inappropriate piping work
may result in water leakage in the room and wet of furniture.
• After opening of the knockout hole, be sure to apply a burring process.
Burr adhered to opening of the knockout hole causes an injury by touching it.
• 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 dewing.
• 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 right figure.
• Do not mount an air purge pipe,
otherwise drain water spouts
out resulted in water leak.
• Use approximately VP30 for the collective
pipes and set them by 1/100 or more downward slant.
As same as the refrigerant pipe, apply a sufficient thermal insulating process for the drain pipe.
(Foamed polyethylene foam: thickness 10mm or more)
• After piping work, remove the suction grille and pour water in the drain pan to check water drain and water
leakage from connecting part of the drain hose.
• After check of the water drain, attach the suction grille as before.
Pipe material/Insulator and size
The following materials for piping work and insulating
process are procured locally.
Hard vinyl chloride pipe VP25
Pipe material
(Outer diameter Ø32mm)
Foamed polyethylene foam, thickness:
Insulator
10mm or more
CAUTION
REQUIREMENT
As long as possible (10cm)
VP25
(Collective pipes)
Connection of drain pipe
• Connect the hard polyvinyl chloride pipe (Procured
locally) to the drain hose.
• Using adhesive agent for vinyl chloride, connect
• It requires several times to dry and harden the
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Heat
insulator
VP25
VP30 or more
Downward slope
1/100 or more
REQUIREMENT
the hard vinyl chloride pipes certainly so that
water does not leak.
adhesive agent.
(Refer to Guide Manual of the adhesive agent.)
In this time, be sure not to apply force to the
connecting section with the drain pipes.
1.5m to 2m
Support
bracket
1/100 or more
downward
Arched
shape
Trap
VP25