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Installation Procedures
(e) The hard PVC tube in the room must be provided with the heat insulating layer.
(f) Don't place the drainpipes at the places where there is irritant gas. Don't put the drainpipe directly
into the sewer, where there might be gases with sulfur.
(g) Backwater bend
Because the drainage was laid in the position of bringing Subatmospheric pressure easily, gain
of elevation of water in the drain pan conduced water leakage. To avoid water leakage, design
a Backwater bend.
Configuration of Backwater bend can be cleaned, a " T" joint can be used in installing as
shown in the picture below.
Backwater bend was installed in the neighborhood of airconditioning
A backwater bend was designed in the middle of drain pipe s
shown as in the picture.
Testing Drainage System
(a) After finishing the electrical system, test the drainage system.
(b) During testing, make sure that the water flows through the piping correctly without any
leakage at the connection.
(c) If it is a new house, test the drainage system before fitting up the ceiling.
(d) Even if it is installed in the season needed for heating, the testing should be performed.
Procedures
(a) Provide about 1000cc of water to the equipment via air outlet port with the feed pump.
(b) During refrigerating operation, check the drainage system.
dismantle
rubber plug,
reinstall it after installation
Before completing the electrical connection, a gibbose connector shall be installed on the drainpipe to
provide it with a water inlet port. Then, if any leakage occurs in the piping, check it to make the water
flow through the drainpipe smoothly.
5. Installation of Air Return & Air Exhaust Ducts
For choosing and installing the air return opening, air return pipe, air exhaust duct and exhaust
duct, please consult the local installer. Calculate the design chart and exterior static pressure, and
select the exhaust duct with appropriate length and shape.
special exhaust
opening (purchased
at local shop
insert the hose into
20mm-30mm of feed
pipe at bottom
main unit of air
conditioner
ceiling
surface
exhaust duct
(purchased at
local shop)
H1=100mm or blower static pressure
1
H2=
H1(or between 50~100mm)
2
install drainpipe clamp
main unit
check drainage via
transparent tube socket
air return
duct
(purchased
at local shop)
special air return
duct (purchased at
inspection
local shop) with air cleaner
hole
10
indoor unit
pour water into a
gibbose connector
drainpipe
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