Toshiba MMU-AP0091H Installation Manual page 106

Tightly closing the nylon band will lessen the effectiveness of the insulation. Only tighten the nylon band to
the extent that it does not change the shape of the insulation.
1. Because the drain is a gravity drain, make sure that the piping outside of the unit has a downward slope.
2. If the piping is installed as shown in the illustrations, it will not drain. Avoid these conditions.
3. Once piping installation is complete, remove the cover for the check hole located on the right side of the
unit, add water to the drain pan through the check hole, and make sure that the water drains completely.
NG
NG
6) High wall type
Install the drain pipe in accordance with the Installation Manual so that the water is
drained completely, and insulate the pipes so that no condensation forms n them.
Improper pipe installation could result in water leaking indoors on furniture, etc.
• Insulate indoor drain pipes completely.
• Insulate the connection with the indoor unit.
Incomplete insulation could result in condensation forming.
• Make sure that the drain pipe slopes downwards at a rate of 1/100 or more, do not route the drain pipe
over another pipe, and do not create a trap.
These can all cause unusual sounds.
• Do not apply undue force to the drain pipe connection.
CAUTION
CAUTIONS
Drain pipe
Refrigerant pipe
Drain pipe
CAUTIONS
REQUIREMENTS
106
Cover for the
check hole
Check hole