Hitachi RCIM-1.0FSRE - Page 31

2 Optional accessories
Duct adapter - Outdoor air inlet
SMGB0137 rev.0 - 05/2021
21
2
TheoutdoorairinletductreferenceOACI-160K2resistancedata,isindicatedinthefollowinggure.Useasaguidefor
fan selection.
Pass resistance (Pa)
Airowvolume(m
3
/min.)
Limitoffreshairintakeamountwith
OACI-160K2accessory
? NOTE
• This chart shows the value when the kit OACI-160K2 is used by itself. In the case that the kit is installed with the T-tube connecting
kit, refer the value to its chart .
• (*1) When connecting OACI-160K2 with1 duct adapter.
• (*2) When connecting OACI-160K2 with 2 duct adapter.
Remarks for PD-75A
Indoor unit HP Maximum capacity of fresh air intake (m
3
/min)
(1.0-2.5) HP 1.0
(3.0-6.0) HP 2.0
TheoutdoorairinletductreferencePD-75Aresistancedata,isindicatedinthefollowinggure.Useasaguideforfan
selection.
40
20
0
01 2
60
Airowvolume
Pass resistance

Example of the duct fan installation
Nº Part
1 Duct(madeofnon-combustiblematerialsonly)
2 Thermal insulation (non-combustible materials)
3 Outdoorairinlethoodwithgallery(attacheddrip-proofhoodtype)
4 Airlter
5 Duct fan
6 Service panel
7 Damper
Theairthroughtheductdoesnotpassthroughtheairlteroftheindoorunits.Fitanairlter(Fieldsupplied)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reproofinsulatingmaterialsonly.
? NOTE
Thepartsshownintheabovegurewillbeeld-supplied.