Aprilaire 1850 Dehumidifier User Manual


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STANDARD BASEMENT AND ATTIC INSTALLATIONS (FULLY DUCTED)
•Usethescrewsinthepartsbagtoattachtheductcollarstotheinletandoutletofthedehumidifier.Theoutletcollarhasabackflowdamper.
•Theoutletductcollarmaybeattachedtothetoporendoftheunit.Movetheoutletcovertothelocationnotbeingused.SeeFigure 2.
•Makesuretherearenobendsintheductworkcomingofftheoutletforaminimumof4”.Thiswillensurethattheductworkwillnotinterfere
with the backflow damper function.
CLOSET INSTALLATIONS
Use the screws provided in the parts bag to attach the duct collars if
desired or required based on recommendations below:
•Whereinletspaceisrestricted,theinletductcollarisoptional.
•WhenthedehumidifierisinstalledbelowtheHVACequipment
and requires a vertical discharge, move the top access panel to the
end of the unit. The outlet duct collar with backflow damper is not
required. See Figure 3.
•Whenthedehumidifierrequiresaductedverticaldischarge,
remove the top access panel and remount on the outlet of the unit.
Install the outlet duct collar with backflow damper on top of the
unit. See Figure 3.
CRAWL SPACE, SEALED ATTICS OR
BASEMENT INSTALLATIONS
If dehumidifying the space in which the dehumidifier is installed, the
duct collars do not need to be installed. Leave the outlet cover on top
of the unit. See Figure 4.
OUTLET COVER
OUTLET DUCT
COLLAR W/BACK
DRAFT DAMPER
MOVE OUTLET
COVER AND
INSTALL OUTLET
DUCT COLLAR TO
TOP DISCHARGE
LOCATION
INLET
DUCT
COLLAR
INLET
DUCT
COLLAR
END DISCHARGE
TOP DISCHARGE
FIGURE 2 – Fully Ducted Installations
90-1909
DUCT COLLARS
SET UP DEHUMIDIFIER FOR INSTALLATION (CONTINUED)
UNDUCTED
INLET
UNDUCTED OUTLET
OUTLET
COVER
UNDUCTED
INLET
OUTLET DUCT
COLLAR W/BACK
DRAFT DAMPER
OUTLET
COVER
OUTLET COVER
FIGURE 3 – Closet Installations
FIGURE 4 – Non-ducted Installations
90-1910
90-1911
4
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