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Johnson Controls HIDH018B21S Installation And Maintenance Manual

Johnson Controls HIDH018B21S
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14
P00792Q-rev.2
5.6 Setting the External Pressure
Refer to Section 8.6 "External Static Pressure Setting".
Static Pressure
in.W.G.
(Pa)
0.14 - 0.20* - 0.32
(35 - 50* - 80)
*: Before Shipment
Figure 5.7 Duct Connection Example
An air filter which
can collect dust.
Outdoor Air
(with Air Filter)
Damper for
Adjusting Air Volume
SilencerSilencer Canvas DuctCanvas Duct
Thermal
Insulation
Damper for Fine
Adjusting Air Volume
Air Outlet
Horizontal
Air Inlet
(with Air Filter)
ERV
(Energy Recovery Ventilation)
Indoor
Unit
Service Access Panel
(17-11/16 inches x 17-11/16 inches)
● Ifalowersoundlevelisrequired,installeld-suppliedsilencer.
● Thefacilitydesignshouldbe“UnitExternalStaticPressure=DuctPressureLoss+Suction/
DischargePressureLoss”.
Ifductpressurelossfallbelowtheexternalstaticpressure,airspeedwillincreaseandnoiselevels
alongwithit.Also,watermaysplashoutfromunitandthemotorprotectioncircuitactivated.
Problemssuchastheinabilitytoadjustairspeedcanoccuriftheexternalunitstaticpressurefall
belowtheductpressureloss.Adjusttheairowcontroldamperorshiftthestaticpressurecontrol
switchtoanequallevelbetweentheexternalstaticpressureandductpressureloss.(referto
“SettingtheExternalPressure”sectionforthedetails.)
● Basically,thisunitisconguredtoinstalltheductsontheinletsideandtheoutletside.Askfor
moreinformationonusingreturnductsintheceiling.

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Johnson Controls HIDH018B21S Specifications

General IconGeneral
BrandJohnson Controls
ModelHIDH018B21S
CategoryAir Conditioner
LanguageEnglish

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