Haier AB072MRERA - Page 259

251
Low ESP Duct
Type Indoor Unit
ATTENTION
■ For normal drainage, the water drainage piping should be connected according to the installation manual.
Heat insulation should be performed to avoid condensation. Improper pipe connection may cause water
going into the machine.
Requirements:
■ Heat insulating treatment should be made for the water drainpipes of the indoor units.
■ Heat preservation should be made for the connection with the indoor units. Improper heat preservation may
cause condensing.
■ The drainpipe should be designed with a down gradient of 1/100. The midway of the elbow shouldn't be made in
S shape. Or abnormal noise may be caused.
■ The lateral length of the drainpipe should be kept within 20m. Under the condition of long pipe, a support should
be provided every 1.52~2m to avoid unevenness.
■ The central piping can be connected according the following gure.
■ Don't apply external force to the connection of drainpipes.
Piping Materials & Heat Insulating Materials
As to prevent condensation, heat insulating treatment should be
performed. The heat insulating treatment for piping should be done
respectively.
Piping Material
Hard PVC tube
VP31.5mm (inner bore)
Heat Insulating
Material
Vesicant polythene
thickness: over 7mm
Hose
■ Heat insulating treatment should be made for the water drainpipes of the indoor units.
■ Heat preservation should be made for the connection with the indoor units. Improper heat preservation may
cause condensing.
■ The drainpipe should be designed with a down gradient of 1/100. The midway of the elbow shouldn't be made in
S shape. Or abnormal noise may be caused.
■ The lateral length of the drainpipe should be kept within 20m. Under the condition of long pipe, a support should
be provided every 1.52~2m to avoid unevenness.
■ The central piping can be connected according the following gure.
■ Don't apply external force to the connection of drainpipes.
The drainage hose is made of Φ19.05mm (3/4) PVC tube, which can adjust the eccentricity and the angle of the
hard PVC tube.
Conrm drainage
During the test run, check the condition of water drainage and make
sure that there is no leakage on the connection of piping, which should
also be performed during the winter.
Support
Heat
insulating
material
Down gradient
of over 1/100
Max. height (about10cm)
Down gradient
of over 1/100
Hose
Attached heat
insulating material
Heat insulating
material
Horniness pvc pipe
Hose clamp