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Installation Procedure
Concentrated drainage
Full thread bolt
hanger
Connect to the main drain pipe. Centralized horizontal drain pipe
1 If 3 or more fan coil units are installed, install the
main air vent at the front of the farthest fan coil unit
from the main drain pipe.
2 If the slope of the centralized horizontal drain pipe
is less than 1/100, be sure to install an air vent at
the top of each fan coil unit to prevent water from
flowing back to the unit.
Performing the drainage test
1 Do a leak test at the connection part of the flexible
hose and the drain pipe (PVC):
1-1 C onnect a general hose to the connection part of
the flexible hose of the fan coil unit, and pour in
some water.
1-2 A fter pouring some water, reassemble the
rubber cap on the connection part of a flexible
hose of the fan coil unit and firmly tighten it with
a band to prevent leakage.
1-3 C heck the leak test at the part where the
adhesive for the flexible hose and the drain pipe
(PVC) is used.
General hose
CAUTION
• The leak test must be performed for at least 24 hours.
18
English
DB68-11289A-01_IM_DVM FCU WindFree 4way_EU_EN_.indb 18
Main air vent
Air vent of the fan
(must be
coil unit
1 to 1.5 m
installed)
(more than 1/100 slope)
Water leakage check part
2
C heck the condensation water drainage:
2-1 P our about 2 liters of water into the fan coil unit
drain pan as shown in the picture.
a When the electric cable connection is completed
• Turn on the fan coil unit.
• Operate in the Cool mode.
NOTE
• Only in the Cool mode, you can check the correct
operation of the drain pump.
b When the electric cable connection is not
completed
• Remove the control box cover of the fan coil unit.
• Connect the power supply (single phase, 220 to
240V) to the L and N terminals.
• Reassemble the control box cover and turn on
the fan coil unit.
NOTE
• When the float switch is not detected due to
insufficient water on the drain pan, the drain pump
will not work.
• If the power supply is directly connected to the L and
N terminals, a communication error message may
appear.
• After completing the drainage check, turn off the unit
and disconnect the power supply.
• Reassemble the control box cover.
2022-04-26 오전 8:55:20
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