Installation
Page 95
5. The horizontal pipe layout should avoid converse flow or
bad flow
• The correct installation will not cause converse
water flow and the slope of the branch pipes can be
adjusted freely
• The false installation will cause converse water flow
and the slope of the branch pipe can not be ad-
justed.
6. Water storage pipe setting
• If the indoor unit has high extra static pressure and
without water pump to elevate the condensate wa-
ter, such as high extra static pressure duct unit , the
water storage pipe should be set to avoid converse
flow or blow water phenomena.
7. Lifting pipe setting of indoor unit with water pump
• The length of lifting pipe should not exceed
750mm.
• The drainage pipe should be set down inclined after
the lifting pipe immediately to avoid wrong opera-
tion of water level switch.
• Refer the following picture for installation reference.
8. Blowhole setting
• For the concentrated drainage pipe system, there
should design a blowhole at the highest point of
main pipe to ensure the condensate water discharge
smoothly.
• The air outlet shall face down to prevent dirt enter-
ing pipe.
• Each indoor unit of the system should be installed it.
• The installation should be considering the conve-
nience for future cleaning.
9. The end of drainage pipe shall not contact with ground
directly.
5.3 Drainage test
1. Water leakage test
• After finishing the construction of drainage pipe
system, fill the pipe with water and keep it for 24
hours to check whether there is leakage at joint
section.
2. Water discharge test
Check that the drainpipe is unhindered.
This test should be performed on newly built houses
before the ceiling is paved.
2.1 Units without a pump
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