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Model 1830
0.4” w.c. MAX
Model 1850(W)
0.6” w.c. MAX
HVAC
DUCTING TO HVAC SYSTEM – CLOSET INSTALLATIONS
The dehumidifier in these applications is typically installed under or next to the HVAC equipment. In both types of installation, the dehumidifier
inlet is not ducted and pulls from the living space through a grille or louvers in the HVAC closet door. The Preferred Installation is to locate
the dehumidifier under the HVAC equipment and supply dehumidified air through the alternate outlet on the top of the unit directly to the HVAC
return. NOTE: The dehumidifier must be wired to activate the HVAC fan during dehumidifier operation in this installation. In the Alternate
Installation the dehumidifier is located next to the HVAC equipment and ducted to the HVAC supply duct using the outlet on the top of the unit.
ThesupplysideexternalstaticpressureoftheHVACsystemmustnotexceed0.4”w.c.forthe1830and0.6”w.c.forthe1850/1850W.
CAUTION
When installing the dehumidifier as part of a combustion type furnace (gas, oil, propane, etc.) HVAC system located in a closet,
duct or locate the dehumidifier inlet and outlet and seal as needed to separate the circulation air from the combustion and
ventilation air. Follow all local and national building and safety codes when installing or modifying any HVAC system.
Optional Component
10”Ductwork
FIGURE 16 – Alternate Closet InstallationFIGURE 15 – Preferred Closet Installation
90-189090-1891
DUCTING FOR STAND ALONE INSTALLATIONS OR NON-DUCTED INSTALLATIONS
In this installation the dehumidifier is not ducted to the HVAC system
and is used to dehumidify a specific area. This installation is typically
in basements or crawl spaces.
Optional Components
10”Ductwork
Grilleswith10”DuctCollars
DEHUMIDIFIER
DEHUMIDIFIED AIR IS SUPPLIED TO DUCTED SPACE
AIR IS PULLED
FROM DUCTED
SPACE
10' MIN
GRILLE WITH 10" DUCT COLLAR (2 PLACES)
DEHUMIDIFIED SPACE
FIGURE 17 – Stand Alone Ducted
90-1893
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