Samsung MXJ-YA1509 Series Installation Manual page 78

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
(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
② ② The max height from the indoor unit's
The max height from the indoor unit's drainpipe exit to the trap r
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.
⑤ ⑤
– horizontal pipe) construction method
Check for Check for leakages leakages after after 24 24 hours.
77 77
should have a trap to prevent reverse flows.
drainpipe exit to the trap ranges from 300 to 550mm.
hours.
flows.
anges from 300 to 550mm.
Installing the Installing the air-vent air-vent