Toshiba MMC-AP0151H Installations-Handbuch Seite 12

4
DRAIN PIPING WORK
• 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.
• 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 fix the attached flexible
hose.
• Adhesive agent cannot be used for the pipe
connecting port (hard socket) of the indoor unit.
Be sure to use the attached hose band for fixing,
otherwise damage or water leakage of the drain
pipe connecting port is caused.
Connection of drain hose
• Insert the attached drain hose into the drain pipe
connecting port on the drain pan up to the end.
• Fit the attached hose band to the end of the pipe
connecting port, and then tighten it securely.
Fit the attached hose band to the end of the hose,
lay down the knob, and then tighten hose band.
Drain pan
Attached drain hose
Confirm that soft hose is pushed
in up to the end of the drain pan.
Connection of drain pipe
• Connect the hard vinyl chloride pipe (procured locally) to the mounted
drain hose which was attached.
• In case of taking pipe from the left side
• In case of taking pipe from the left side, exchange the plug from left to
right. Push in the plug of which end is not sharp up to the end.
REQUIREMENT
As long as possible (10cm)
VP20
VP30 or more
Drain pipe connecting port
(Hard socket)
Drain pan
• Be sure to fix the drain hose with the attached
hose band, and set the tightening position
upward.
• As the draining is the natural water draining,
arrange the pipe outside of the unit on the down
slope.
• If piping is performed as shown in the figure,
drain cannot be discharged.
9
1.5m to 2m
1/100 or more
Heat
downward
insulator
Arched
shape
VP20
VP20
Downward slope
1/100 or more
Attached drain hose
Attached hose band Attached hose band
Adhesive agent VP20 vinyl chloride pipe
prohibited (procured locally)
REQUIREMENT
Drain pipe
Drain pan
Plug
Support
bracket
Trap
Refrigerant pipe
Drain pipe