Haier AB072MRERA - Page 37

29
4-Way Cassette
Type Indoor Unit
Pipe materials & heat insulation materials
Hose
Conrm drainage
Lifting drainpipe
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 VP
31.5mm (inner bore)
Heat Insulating Material
Vesicant polythene
thickness: over 7mm
The attached hoses can be used to adjust the eccentricity and angle of the hard PVC tube.
■ Stretch the hose directly to make connections as to avoid distortion. The soft end of the hose should be
positioned with a clamp.
■ The hose should be used in the horizon direction.
Heat insulating treatment:
■ Wrap the connection between the clamp and the root segment of the indoor unit without any gap with heat
insulating materials as shown in the drawing.
The drainage should be conrmed during the test run to make sure
that there is leakage at the connection.
The conrmation of drainage should be also performed during
the installation in the winter season.
Charge water from the outlet or the specied position and conrm
the drainage.
Charge 600cc water with a hose from the outlet or the specied
location on the machine. Add the water slowly. Don't add water
to the motor of the drainage pump.
■ After mounting the electrical system, do cooling operation and
meanwhile add water and check.
■ If the electrical installation hasn't been completed, pull out the
terminal (2P) of the oater switch on the electrical cabinet.
After conrming the drainage, connect the terminal of the oater
switch and run the drainage pump for 5 minutes until it stops
automatically.
■ Conrm the sound of the motor:
Conrm the sound of the motor of the drainage pump and meanwhile check the drainage.
The drainpipe can be lifted 360mm.
When the down gradient of the drainpipe can't be ensured, after upright
lifting, the drainpipe is in the down slope.