Hitachi airCore 700 Operation Installation Maintenance Manual page 20

4. Indoor Unit Installation
(1) Apply vibration absorbing mats (10t) under the indoor unit.
< PPIH-3.0UFA1NQ - PPIH-6.5UFA1NQ >
Vibration Absorbing
Mat (10t)
P
Wooden Bar
Place the three wooden bars on the truss as shown in the figure.
Note that the middle wooden bar should be placed in the center position of the unit.
(2) Apply an auxiliary drain under the indoor unit if the ambient humidity is higher than 80% (RH).
4.3.2 Separating Indoor Unit (If required)
NOTE:
•
Separate the indoor unit only when necessary. Disassemble and reassemble on a flat surface.
< PPIH-3.0UFA1NQ - PPIH-4.0UFA1NQ >
Separate the indoor unit in the following order.
(1) Remove the E-BOX cover (2 screws) (Fig.4.2).
(2) Unplug the float switch, temperature sensor. After removing the insulation tape(store for reuse),
unplug fan motor connectors as below, and unfasten fan motor wiring (Fig.4.3).
Unplug this connector
(float switch and temp.sensors)
Indoor Unit
Truss
Supply Air
Electrical Box
Electrical Box cover
Fig.4.2
Main PCBA
Fan Motor Wiring
and Receiver
Fig.4.3
-7-
P
View from
Truss
Heat Exchanger Compartment
Fan Cover
Return Air
Unplug fan motor connector from rear of E-box
Unfastern fan motor wiring
Vibration Absorbing
Mat (10t)
Wooden Bar