Hitachi airCore 700 Operation Installation Maintenance Manual page 22

4. Indoor Unit Installation
(2) Remove the 4 bolts (M6) on the back of the supply air box, carefully pull the Return Air Box away,
taking care not to damage the fan motor wiring (Fig.4.7).
Rec eiver connector
(for float switch and temp, sensors)
(3) Remove the 7 bolts (M6) on the back of the supply air box, carefully pull the fan cover away, taking
care not to damage the fan motor wiring (Fig.4.8).
Rec eiver connector
(for float switch and temp, sensors)
Rejoin the return air and supply air compartments in the following order.
(4) Carefully place the fan assembly back into the original position.
(5) Fix the fan assembly onto the heat exchanger compartment with 7 bolts (M6).
(6) Carefully replace the Return Air Box, taking care not to damage the fan motor wiring, and fix the
Return Air Box with the 5 bolts (M6).
(7) Reconnect the float switch and temperature sensor, fan motor connector, wrapped and tightened
with insulation tapes, and tie fan motor wiring.
4.3.3 Mounting on Suspension Brackets (Field-Supplied)
Mount the suspension brackets to the suspension bolts and secure them with nuts as shown. Use
(field-supplied) angle and threaded rods, M10 or greater are also recommended to brace the unit
mounting. (Check with local and national building codes and or a structural engineer as to the fixing of
the unit or building support structure if applicable.)
Heat Exchanger Compartment
Fig.4.7
Fig.4.8
Threaded Rod
Suspension Bracket
Washer
Nut
-9-
Return Air Box
Heat Exchanger Compartment
Fan assembly