Aprilaire 1850w, 1830 Ducting to Hvac System Basement and Attic Installations, Required Component

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DUCTING TO HVAC SYSTEM – BASEMENT AND ATTIC INSTALLATIONS

The Preferred Installation is to duct the dehumidifier to pull air from and return dehumidified air to the HVAC return duct.. This installation will ensure warm, dehumidified air is thoroughly mixed with the HVAC system air before being discharged into the living space.. Alternatively, the dehumidifier can be ducted to discharge to the supply duct, but the external static pressure of the HVAC system must not exceed 0.4”w.c. for the 1830 and 0.6”w.c. for the 1850/1850W.

Required Component

10” Ductwork

Figure 11 – Preferred Basement Installation

10” DUCT

 

AIR IS PULLED

HVAC/FURNACE

FROM AND

6 ft

SUPPLIED TO THE

RETURN DUCT

MIN

 

DEHUMIDIFIER

 

90-1886

Figure 13 – Preferred Attic Installation

 

PLENUM BOX OR Y-FITTING

AIR HANDLER

6 FT. MIN.

 

FILTER

 

10" DIA. INSULATED DUCT

Figure 12 – Alternate Basement Installation

Model 1850(W)

AIR IS DISCHARGED

0.6” w.c. MAX

TO SUPPLY DUCT

Model 1830

 

0.4” w.c. MAX

 

 

HVAC/FURNACE

AIR IS

 

PULLED FROM

 

RETURN DUCT

 

10” DUCT

90-1887

 

Figure 14 – Alternate Attic Installation

 

 

Model 1850(W)

 

 

 

0.6" w.c. MAX.

 

PLENUM BOX

 

Model 1830

PLENUM

 

 

0.4" w.c. MAX.

 

 

AIR HANDLER

 

 

24" MIN.

FILTER

 

 

 

 

BOTH SIDES

CONDENSATE PAN

90-1888

 

10" DIA. INSULATED DUCT BOTH SIDES

90-1889

CONDENSATE PAN

Ducting Notes:

Use insulated duct when the dehumidifier is located in an unconditioned space such as an attic or a garage.

Use a minimum of 12” of flex duct at the dehumidifier inlet and outlet to prevent vibration noise transmission.

When ducting return to return (preferred), the dehumidifier must be wired to turn on the HVAC fan when operating (see page 14).

When ducting return to supply, allow adequate space before the first branch duct to ensure the warm dehumidified air is thoroughly mixed with the HVAC system air..

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Contents Installation Instructions Safety InstructionsTable of Contents Specifications Closet installations SET UP Dehumidifier for InstallationStandard basement and attic installations fully ducted Crawl space, Sealed Attics or basement installationsTo move the control Control LocationDetach the on-board control by removing the four Voltage Hard WiringMinimum Wire Size AWG Minimum Circuit CapacityWiring Instructions Hard WiringReattach the electrical service panel and side panel Location Considerations Condensate PAN, Condensate Pump and Float Switch Drain InstallationLeveling Ductwork Ducting to Hvac System Basement and Attic InstallationsRequired Component Ducting NotesOptional Components Ducting to Hvac System Closet InstallationsOptional Component Ductwork Grilles with 10 Duct CollarsDucting for TWO Zone Installations Whole-Home Primary Zone InstallationExternal Control Crawl SPACE/SEALED Attic ControlOptional W & Y Wiring Wiring the Dehumidifier to the Hvac System and Zone DampersWiring to the Hvac System Wiring to Zone DampersSystem SET-UP & Checkout External Control Zone90-1854selections DEH W/ACZoning and/or Ventilation System SET-UP & CheckoutDehumidification Only 90-1854energizedTWO Zone Primary and Secondary Crawl Space or Sealed Attic Remote Control Using ModelSampling will show on the display Press the ON/OFF button to turn the dehumidifier control onVentilation Installation Intake Hood AWG WireInstallation & Wiring VentilationVENT-AUTO & VENT-TIMED Outdoor Temperature Sensor InstallationVentilation Dehumidifier can ventilate in four modesCFM Required Record the required CFMDetermine Fresh AIR Delivery Rate CFM DeliveredDisabled screen appears For 3 seconds to accessRepeatedly until the Vent Dehumidifying the Fresh AIR Adjusting Ventilation Time After Initial SET UPSequence of Operation Ventilation with AN External ControlDiagnostic Codes TroubleshootingDiagnostic Codes Troubleshooting Troubleshooting Guide Service Parts 10010759 B2206316A