Drain Piping Work - Toshiba RAV-SM2242DT-E Installation Manual

Concealed Duct High Static Pressure
6

DRAIN PIPING WORK

Following the Installation Manual, perform the drain piping work that water is properly drained, and apply a heat
insulation not to cause a dew condensation.
Inappropriate piping work may cause the water leakage in the room and wet of furniture.
REQUIREMENT
• The drain piping flows the natural drainage. Make sure to set the drain piping from the unit with descending slope of 1/50 to
1/100 and do not make up-down or trap in the midway.
• Set the horizontal pulling of the drain pipe to 20m or less. When drain piping is too long, attach the support bracket at
intervals of 1.5m to 2m to avoid the pipe becomes undulant as shown in figure below.
<Example for installation of the main piping (Incl. piping support)>
1.5 to 2 m
Descending slop of
1/50 to 1/100
• Be sure to connect the drain pipe to the air conditioner with adhesive to avoid water leakage from the joint portion.
• Condensation may occur on the drain pipes including collective pipes. All drain pipes must be wrapped with heat insulator
to prevent dew condensation. Especially a part where drain pipe is connected to the indoor unit must be firmly insulated with
the provided heat insulator.
CAUTION
As long as possible
Descending slop of
VP-30
1/50 to 1/100
– 18 –
Installation Manual
Up-down bend
Trap
EN
18-EN