Hitachi RCI Service Manual page 81

2 Unit installation
Nº
1 Duct (made of only non-combustible materials)
2 Thermal insulation (non-combustible materials)
Outdoor air inlet hood with gallery (attached drip-proof
3
hood type)
4 Air filter
5 Duct fan
6 Service panel
7 Damper
Fit an air filter to the suction side of the outdoor air inlet duct in a
position that allows for easy maintenance operations.
Insulate the duct and its connection using fireproof insulating materials only.
N O T E
The parts shown in the above figure will be field-supplied.
Install an inspection panel -6- below the duct fan so that maintenance operations can be carried out on the air filter and the
damper.
Always use a damper and adjust the amount of air where a fan with a supply volume higher than the outdoor air inlet volume
limit is used.
The outdoor air inlet duct resistance is indicated in the following
figure. Use as a guide for fan selection.
(*1)
: installation of the junction box on one side.
: installation of the junction box on both sides.
(*2)
69
SMGB0063 rev. 1 - 10/2010
Part
2