2
７
Unit Installation Instructions Installation of
Drainage Pipeline
Cautions:
The air supply pipe, the air intake pipe and the fresh air pipe must be covered with a layer of
thermal insulation, so as to avoid thermal leakage and condensation. Firstly apply liquid nail on
the pipes, then attach the thermal insulation cotton with a layer of tinfoil. Use the liquid nail cover
to fix it. Lastly use tinfoil adhesive tape to carefully seal the joints; other good thermal insulation
materials can also be used.
The air supply pipes and the air intake pipes shall be fixed to the prefabricated boards of the
ceiling by using iron supports. The joints of the pipes must be sealed by glue so as to avoid
leakage.
The design and installation of air pipes must be in conformity with the relevant state engineering
criteria.
The edge of the air intake pipe must be at least 150mm away from the wall. The air intake must
be covered with filter.
Silencing and shock absorption shall be considered in the design and installation of the air
pipes. Additionally, the noise source must be far away from where people stay. The air intake
shall not be located above the place where users stay (offices and rest places, etc.).
Installation of
Drainage Pipeline
(1)
The
Drainage Pipeline
shall be installed with an inclining angel of 5
～
10
°
, so as to facilitate the
drainage of condensate. The joints of the
Drainage Pipeline
must be covered by thermal
insulation materials to avoid generation of exterior condensate. (As shown in Figure
37
)
(2)
A
Drainage
outlet is located at both the left and right sides of the indoor unit. After selecting
one
Drainage
outlet, the other outlet shall be blocked by rubber plug. Bundle the blocked
outlet with string to avoid leakage, and also use thermal insulation materials to wrap the blocked
outlet.
(3)
When shipped out from factory, both the
Drainage
outlets are blocked by rubber plugs.
管盖
冷
保温层
Thermal
Insulati
on Materials
of
Drainage
Pipe
Fig
.
37
Thermal Insulation of
Drainage Pipeline
Caution: The joint of
Drainage Pipeline
must not have leakage.
Drainage Pipeline
(4)
When connecting the drainage pipe with the unit, do not apply excessive force to the pipeline at the
side of the unit. The fixing position of the pipeline shall be near the unit.
(5)
Purchase general-purpose hard PVC pipe locally to be used as the drainage pipeline. When
carrying out connection, place the end of the PVC pipeline into the drainage hole. Use flexible
drainage tube and tighten it with thread loop. Never use adhesive to connect the drainage hole
and the flexible drainage tube.
(
6
) When the laid drainage pipe is used for multiple units, the common pipe shall be about 100mm
lower than the drainage outlet of each set of unit. A pipe with thicker wall shall be used for such
purpose.
