Drain Piping - Toshiba Carrier MMD-AP0726HP-UL Manual De Instalación

REQUIREMENT
Removing the cardboard for transportation
Make sure to remove the protection cardboard for transportation that is inserted in the gap between the top
cabinet and the heat exchanger before installing the indoor unit.
Heat exchanger
Protection cardboard
for transportation
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– 7 –
Top cabinet
5

Drain piping

CAUTION
Condensate drain piping installation and material must comply with applicable codes and regulations for
the speci c indoor installation.
The condensate drain piping must be insulated to prevent sweating. All material used in the plenum space above
the ceiling must comply with applicable codes and regulations. If the condensate drain exits the unit downward
(gravity ow) the slope and suspension methods used for the condensate drain piping must comply with applicable
codes and regulations.
The drain pipe must be sloping downward (at an angle of 1/100 or more), and do not run the pipe up and down
(arched shape) or allow it to form traps. Doing so may cause abnormal sounds.
Restrict the length of the traversing drain pipe to 65.6' (20 m) or less. For a long pipe, provide support brackets
at intervals of 4'11" to 6'7" (1.5 to 2 m) to prevent apping.
Install the collective piping as shown in the following gure.
Do not provide any air vents. Otherwise, the drain water will spout, causing water to leak.
Do not allow any force to be applied to the connection area with the drain pipe.
Support
As long as possible
4'11" to 6'7"
bracket (Approx. 3.9" (100 mm))
(1.5 to 2 m)
(Collective
piping)
Downward slope
Heat insulator
1/100 or more
Downward slope
1/100 or more
Flexible hose
Use the attached exible hose to adjust centre discrepancy of the hard vinyl chloride pipe or to adjust the angle.
Do not use the exible hose as stretched, or do not deform it more extent than that in the following gure.
Fix the soft end of the exible hose with the attached hose band.
Use the exible hose on a horizontal level.
OK
Top view
max
45°
Side view
Air discharge
max
45°
Arched shape
Trap
VP30
Incorrect
NO GOOD
Side view
Air discharge
Riser (Trap)
Side view
Air discharge
90° Bend
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