Toshiba MMU-UP0071WH-E, Installation Manual

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 Check the draining
In the test run, check that water drain is properly performed and water does not leak from the connecting part of
the pipes. When doing this, also check that no abnormal sounds are heard from the drain pump motor. Be sure to
check draining also when installed in heating period.
When the electrical and wiring work has been completed
Before attaching the panel, pour some water by following the method shown in the following figure. Then, while
performing a cooling operation, check that the water drains from the drain pipe connecting port (transparent) and
that no water is leaking from the drain pipe.
When the electrical and wiring work has not been completed
• Disconnect the float switch connector (3P: red) from the connector (CN34: red) on the printed circuit board inside
the electrical control box. (Before doing this, be absolutely sure that the power has been turned off.)
• Connect a 208 V to 240 V supply voltage to (L) and (N) on the power supply terminal block. (Never apply a 208 V
to 240 V voltage to (Uv (U1)), (Uv (U2)), (A), (B) of the power supply terminal block. Otherwise, the printed circuit
board may be damaged.)
• Pour the water by following the method shown in the following figure. (Amount of water poured: 1500 cc to 2000
cc)
• When the power is turned on, the drain pump automatically starts running. Check whether the water is draining
from the drain pipe connecting port (transparent), and check that no water is leaking from the drain pipe.
• After checking that the water drains and there are no water leaks, turn off the power, connect the float switch
connector to its original location (CN34) on the printed circuit board, and return the electrical control box to its
original position.
Pull out connector CN34
(Red) from P.C. board.
Black Red
White
220 V - 240 V, 50 Hz
208 V - 230 V, 60 Hz
Black
CAUTION CAUTION
When pouring the water, pour it slowly. If it is poured with too much force, it will spread around the inside of the indoor
unit, possibly causing the unit to malfunction.
 Perform heat insulating
• As shown in the figure, cover the flexible hose and hose band with the attached heat insulator up to the bottom
of the indoor unit tightly.
• Cover the drain pipe tightly with a heat insulator locally procured so that it overlaps with the attached heat
insulator of the drain connecting section.
H
ea
t excha
nger
Insert the hose end between the
heat exchanger and the drain pan,
and then bend the hose downward.
Drain pan
Tool for pouring water
Bottle
Water (1500 cc to 2000 cc)
Float switch connector
(3P) (CN34: red)
Power supply
wiring
Wrap the attached heat insulator seamlessly from
the surface of the indoor unit.
Heat insulator of the
drain connecting
section (accessory)
In
door
uni
t
Heat insulator
(locally procured)
27-EN 28-EN