Drain Piping; Drain Test - Friedrich J Serie Manual De Instalación

Drain Piping

[Ceiling Concealed Duct/Ceiling Cassette Type]
• Drain piping must have down-slope (1/50 to 1/100): be
sure not to provide up-and-down slope to prevent rever-
sal flow.
• During drain piping connection, be careful not to exert
extra force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the in-
door unit is 1 1/4 inch(32mm).
Piping material: Polyvinyl chloride pipe inner
diometes 1 inch(Ø 25mm) and pipe fittings
• Be sure to install heat insulation on the drain piping.
Heat insulation material: Polyethylene foam
with thickness more than 5/16 inch(8mm).

Drain test

The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
• Connect the main drain pipe to the exterior and
leave it provisionally until the test comes to an
end.
• Feed water to the flexible drain hose and check
the piping for leakage.
• Be sure to check the drain pump for normal op-
erating and noise when electrical wiring is com-
plete.
• When the test is complete, connect the flexible
drain hose to the drain port on the indoor unit.
CAUTION : The supplied flexi-
ble drain hose should not be
curved, neither screwed. The
curved or screwed hose may
cause a leakage of water.
h The figure can be changed according to model.
Pipe clamp
Indoor unit
Maintenance
drain port
Feed water
Drain Pump
Drain pan
Installation
Upward
routing
not allowed
1/50~1/100
MAX : 700 mm(27 9/16 inch)
Flexible drain hose
(accessory)
Main
drain pipe
Drain
port
Glue the joint
Drain hose connection
Use the clip (accessory)
Flexible drain hose Flexible drain hose Flexible drain hose
Flexible drain hose
1/50~1/100
Installation Manual 19