DC Inverter U-Match Series Cassette Type Unit
27
(2) It is not allowed to connect the condensate drain pipe into rain pipe to
prevent rain water from pouring in and cause property loss or personal
injury.
(3) Condensate drain pipe should be connected into special drain system for
air conditioner.
3.2.6.1 Indoor Side Drainage Pipe
(1) Keep pipe size equal to or greater than that of the connecting pipe.
(2) Install the drain piping as shown and take measures against
condensation.
Extension drain piping
(commercially
available)
Insulating tube
(commercially
available)
Insulating tape
(accessory)
Indoor unit
drain hose
(3) Keep piping as short as possible and slope it downwards at a gradient of
at least 1/100 so that air may not remain trapped inside the pipe.
(4) If the drain pipe can’t be installed at a proper inclination, then add drain lift
pipe.
(5) In order to make sure the drain hose is straight, the hangers should keep
a distance of 1~1.5m from one another.
√
（Corr
ect）1/100 or
m
ore g
radi
ent x (wrong)
1-1.5m
(6) Use the drain hose that is delivered together with the unit.
(7) Insert the drain hose into the drain faucet.
(8) For the purpose of thermal insulation, wind a large piece of sponge
around the clamp of drain hose.
(9) Apply thermal insulation for the indoor drain hose.
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