77
77
3.
3.
Guideline for each installation process
Guideline for each installation process
4) Branch pipe (indoor unit
4) Branch pipe (indoor unit – horizontal pipe) construction method
– horizontal pipe) construction method
(1) Indoor unit with a drain pump
(1) Indoor unit with a drain pump
①
①
The pipe coming from the indoor unit
The pipe coming from the indoor unit should have a trap to prevent reverse
should have a trap to prevent reverse flows.
flows.
②
②
The max height from the indoor unit’s
The max height from the indoor unit’s drainpipe exit to the trap r
drainpipe exit to the trap ranges from 300 to 550mm.
anges from 300 to 550mm.
③
③
In the upper area of the trap (max height of the drainpipe), install an air vent to prevent the
In the upper area of the trap (max height of the drainpipe), install an air vent to prevent the
condensed water’s back flows into the drainpipe caused by an increase in the pressure in
condensed water’s back flows into the drainpipe caused by an increase in the pressure in
the drainpipe.
the drainpipe.
④
④
The end of the air-vent should form a T or 7 shape to prevent entry of dust or foreign
The end of the air-vent should form a T or 7 shape to prevent entry of dust or foreign
substances.
substances.
Check
Check for
for leakages
leakages after
after 24
24 hours.
hours.
Installing
Installing the
the air-vent
air-vent
⑤
⑤
Summary of Contents for MXJ-YA1509 Series
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