Mitsubishi Heavy Industries FDTC40ZHXV Technical Manual page 220

Outline of bottom drain piping work
If the bottom drain piping can be done with a
descending gradient (1/50-1/100), it is possible
to connect the pipes as shown in the drawing
below.
Uncoupling the drain motor connector
Uncouple the connector CNR for the drain motor
as illustrated in the drawing on the right.
(
Note: If the unit is run with the connector coupled,
drain water will be discharged from the upper
drain pipe joint, causing a water leak.
Drain pump operation
In case electrical wiring work finished
Drain pump can be operated by remote controller (wired).
For the operation method, refer to Operation for drain pump in the installation manual for wiring work.
In case electrical wiring work not finished
Drain pump will run continuously when the dip switch "SW7-1" on the indoor unit PCB is turned ON, the Connec-tor CNB is
disconnected, and then the power supply (230VAC on the terminal block q and w) is turned ON.
Make sure to turn OFF "SW7-1" and reconnect the Connector CNB after the test.
(g) Tap selection on blower unit (when the high peformance filter is used)
The fan tap's factory setting is "Standard" If you want to change it to the high static-pressure setting, you can avail yourself of the
following two methods. Use one of the two methods to set the fan tap.
Make sure to perform the functional setting with remote controller.
Select [Indoor function] in the functional setting mode, and change the function number [01]
[High wall setting].
For operation method, refer to the user's manual of the remote controller.
unctional content B Setting content C Default setting
unction number A
01 High wall setting
Standard Tap
Static
Pressure
High Tap
CAUTION
Taps should not be used under static pressure outside the unit mentioned above.
Dew condensation may occur with the unit and wet the ceiling or furniture.
Do not use under static pressure outside the unit of 50Pa or less. Water drops may be blown from the diffuser outlet of the
unit and wet the ceiling or furniture.
onnecting port of bottom drain pipes
)
Standard
High wall 1
UNIT: Pa
50
130
213
-
Rubber stopper (to be removed)
.C. board
For drain motor
connector CNR (blue)
-
onnecting port of top drain pipe
Standard hard polyvinyl
chloride pipes
Insulating material