Hitachi RAC-25WSA RAC25WSA User Manual
Product codes
RAC25WSA
10-31
CAUTION
•
Be sure to install the indoor unit level. If the
indoor unit is inclined, water may leak.
indoor unit is inclined, water may leak.
•
If the space between bottom surfaces of indoor
unit and ceiling is not correct, there may be a
gap between the grille and ceiling surface, which
will cause dripping of condensed water.
unit and ceiling is not correct, there may be a
gap between the grille and ceiling surface, which
will cause dripping of condensed water.
6. Change of suction opening and filter position from
bottom to back side
•
Remove the filter at the bottom side of indoor unit
by unscrew 8 screws at the filter holders (4
portions).
by unscrew 8 screws at the filter holders (4
portions).
•
Remove 6 screws at back plate of indoor unit.
•
Then install the back plate at the bottom of indoor
unit using 6 screws.
unit using 6 screws.
•
Install filter at backside of indoor unit by fixing it
with filter holders (4 portions) using 8 screws.
with filter holders (4 portions) using 8 screws.
Setting of switches
High static-pressure switch (Full duct type and semi
duct type)
For full duct type and semi duct type, set the high static –
pressure switch to HIGH STATIC-PRESSURE
If it is not set to HIGH STATIC-PRESSURE, there will be
reduction of cooling and heating capacities. (At the time of
delivery, the switch is set as “NORMAL”)
For full duct type and semi duct type, set the high static –
pressure switch to HIGH STATIC-PRESSURE
If it is not set to HIGH STATIC-PRESSURE, there will be
reduction of cooling and heating capacities. (At the time of
delivery, the switch is set as “NORMAL”)
4. Installation of wired remote controller
a. Connection to the electrical box
•
Remove the cover of electric box
•
Connect the connector of wired remote
controller to CN1102
controller to CN1102
•
Assemble back the cover of electrical
box
box
b. Wiring installation for wired remote controller (2
methods)
•
Wired remote controller casing can be
opened by pressing the slots with minus
screw driver (see below diagram)
opened by pressing the slots with minus
screw driver (see below diagram)
Indoor unit
Filter
Filter holders
Back plate
(1) Bottom side suction opening
Indoor unit
Filter
Filter holders
Back plate
(2) Back side suction opening
Static-Pressure SW
ST
AT
IC
PR
ESSU
RE
This is used for increasing fan speed
according to the situation of the trial
operation inside the room with ceiling
height 2.5m and above.
However noise gets slightly higher.
HIGH PRESSURE
NORMAL
Wired
Remote
Controller
Remote
Controller