3 DRAIN PIPING WORK
CAUTION
•Following the Installation Manual, perform the drain piping work so that water is properly drained, and apply a heat insulation so as not to cause a dew. Inappropriate piping work may result in water leakage in the room and wet of furniture.
Piping/Heat insulating material
Require the following materials for piping and heat insulating at site.
Piping | Hard vinyl chloride pipe VP25 | |
(Outer dia. : Ø32mm) | ||
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Heat insulator | Foam polyethylene : | |
Thickness 10mm or more | ||
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REQUIREMENT
• | Be sure to perform heat insulation of the drain pipes of the indoor unit. |
| 1.5m to 2m | Support | ||||||||
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• | Never forget to perform heat insulation of the connecting part with the indoor |
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| unit. An incomplete heat insulation causes dewing. | Heat |
| 1/100 or more |
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• | Set the drain pipe with downward slope (1/100 or more), and do not make | insulator |
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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.
VP25VP25VP25
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• | Set the collective piping as shown in |
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| the right figure. |
| VP30 or more | Downward slope | ||||||
• | Be sure not to apply force to the |
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| connecting part of the drain pipe. |
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Arched shape
Trap
Extended ventilating pipe
•The hard
For connection with the drain pipe connecting port, be sure to use/fix the attached flexible hose with the hose band, otherwise a damage or water leak is caused on the drain pipe connecting port.
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| Attached hose band | VP25 vinyl chloride pipe | |||||||||||
Drain pipe connecting | (To be local procure) | |||||||||||||||
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| Attached flexible hose | ||||||||||
port (Hard socket) |
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Soft socket | Socket for VP25 | |
(To be local procure) | ||
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| Hard socket |
Drain pipe connecting port (Transparent)
Indoor unit body
Align the attached hose band to the end of hose, set the tightening position upward, and then tighten it.
Flexible hose | VP25 vinyl chloride pipe | |
(Accessory) | (To be local procure) | |
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Socket for VP25 vinyl chloride pipe (To be local procure)
Adhesive inhibited :
Use the attached flexible hose and hose band for connecting the drain hose to the clear drain socket.
If applying the adhesive, socket will be damaged and cause water leakage.
Flexible hose
Use the attached flexible hose to adjust core discrepancy of the hard vinyl chloride pipe or to adjust the angle.
•Do not use the flexible hose as stretched, or do not deform it more extent than that in the following figure.
•Be sure to fix the soft end of the flexible hose with the attached hose band.
•Use the flexible hose on a horizontal level.
max 
45˚
max 
45˚
Riser (Trap)
90˚ Bend
36