Hitachi RCI-1.0FSN3 Service Manual page 90

2 Unit installation
Electrical Box
Indoor Unit
P
664
840
The outdoor air inlet duct resistance increases as indicated in the following figure when using the T-duct connection. Use
it as a guide for fan selection.
78
SMGB0077 rev.0 - 01/2013
Fresh Air
(Total Heat
Exchanger)
210 118
Model
1.0 - 2.5
3.0 - 6.0
Pass Resistance of Fresh Air Intake Portion
200
150
100
50
0
0 2
Air Flow Volume (m
NOTE:
This chart is shown the relationship between
the air flow volume and the pass resistance when
the T-tube connecting kit is used with
the fresh air intake kit.
Suspension Band
(Field-Supplied)
Indoor Unit
Fresh Air Intake Kit
Flexible Duct (φ150)
(Field-Supplied)
View from P
Dimension
a b
303 179
353 229
6HP
Limit of Fresh
Air Intake Amount
4 6
/min.)
3
Fresh Air
(Total Heat
Exchanger)