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Concealed Duct High Static Pressure
Installation Manual
EN
6
DRAIN PIPING WORK
CAUTION
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.
• 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.
1.5 to 2 m
Descending slop of
1/50 to 1/100
Descending slop of
1/50 to 1/100
VP-30
As long as possible
Trap
Up-down bend
<Example for installation of the main piping (Incl. piping support)>
18-EN
+00EH99871101.book Page 18 Friday, April 23, 2010 6:05 PM
Summary of Contents for RAV-SM2242DT-E
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