Aprilaire 1770A, 1750A installation instructions Convertible installation, Optional Component

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Convertible installation

In this installation the dehumidifier controls humidity in both the whole-home and a spot location.. The dehumidifier will dehumidify the whole home as the first priority, switching to the spot location after the whole-home dehumidification need has been met.. Ducting the unit to the return and supply, where air is pulled from the return duct, dehumidified, and discharged to the supply duct, is the most common setup, with additional ducting run to and from the spot location(s).. Note: Convertible Mode will not work with ventilation, air cycling, or continuous HVAC fan operation.. The Model 70 Living Space Control and third-party controls (see pages 16-17) cannot be used in Convertible Mode operation..

DUCTING & WIRING

Required Components

Duct Work

18 – 22 AWG Wire

Grilles with 8” Duct Collars

2 – Aprilaire Model 6508, 8” Normally Closed Damper

2 – Aprilaire Model 6608, 8” Normally Open Damper

24 VAC Transformer (40VA min..) for Dampers

NOTE: 4522 Basement Kit includes 2 – 6508 Dampers, 2 – 6608 Dampers and a 24 VAC Transformer..

Optional Component

Condensate Pan & Normally Closed Float Switch

Figure 16 – Convertible Installation

Figure 17 – Convertible Wiring

 

DEHUMIDIFIER SYSTEM DAMPERS

DEHUMIDIFIER

SUPPLY DUCT

NORMALLY CLOSED

DAMPER

SUPPLY

TO AREA

NORMALLY OPEN DAMPER

115 VAC

CIRCUIT

DEHUMIDIFIED AIR IS SUPPLIED

DOWNSTREAM FROM A-COIL TO

MINIMIZE EVAPORATION OFF A-COIL

RETURN

DUCT

NORMALLY CLOSED

DAMPER

RETURN FROM AREA

GRILLE WITH 8"

DUCT COLLAR

NORMALLY

CONDENSATEOPEN DAMPER HOSE

SPOT

WHOLE-HOME

24 VAC

CONTROL BOARD

(40 VA min)

 

 

 

T

 

 

 

TRANSFORMER

 

 

 

 

 

DAMPERS

 

 

 

 

VEN

 

 

 

 

DEH

THERMOSTAT

HVAC EQUIPMENT

P

 

 

 

 

 

R

 

R

Rf

 

C

 

C

Cf

 

 

EQUIHVAC

 

G

 

 

 

 

 

Gs

 

 

 

G

Gh

 

W

 

W

W

 

Y

 

Y

DH

 

 

 

 

R

 

 

 

 

FLOAT

 

 

 

 

SWITCH

 

 

 

 

ODT

 

 

 

 

ESENSO

 

 

 

 

OT

 

 

 

 

A

 

 

 

 

REM

 

 

 

 

B

 

 

 

 

+

 

 

 

 

-

90-1536

90-1537

10

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Contents Safety Instructions Table of ContentsOverview Whole-Home, see Spot, see Convertible, seeSpecifications Unpacking and ContentsLocation Considerations Install Unit Indoors Do not expose to elementsPower Outlet within 8 ft.. of unit Location NotesDuctwork Recommendations Mechanical InstallationDuct Collars & Backflow Damper Design AirflowsWhole-Home installation Mechanical InstallationDrain Attic Ducting & Wiring Basement Ducting & WiringAttic Installation Note Sequence of Operation Spot installationDIP Switch Configuration Duct Work Grilles with 8 duct collarsDucting & Wiring Wiring NotesCondensate Pan & Normally Closed Float Switch Convertible installationOptional Component OFF Test Ventilation oR Air Cycling CFM Delivered Determine Fresh AIR Delivery RateDetermine Cycle Time Switch Notes Outdoor Temperature Sensor InstallationVent-Timed, Dehumidifier Initiates Ventilation Vent-Timed, Hvac Initiates VentilationVent-Auto Local Wiring & DIP Switch ConfigurationModel 70 living space control Whole-HomeThird-party control ExternalDehumidification Adjusting Dehumidifier SET PointSystem Checkout VentilationGreen LED Codes TroubleshootingLED Codes Red LED CodesTroubleshooting Troubleshooting Guide
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1770A, 1750A specifications

The Aprilaire 1750A and 1770A are advanced dehumidifiers designed to enhance indoor air quality by effectively managing humidity levels in residential settings. These models stand out for their efficiency and durability, making them popular choices for homeowners seeking to create a comfortable living environment.

One of the main features of the Aprilaire 1750A is its ability to remove up to 70 pints of moisture per day, while the slightly larger 1770A can handle up to 90 pints. This powerful moisture removal capacity makes both models particularly suitable for larger homes or spaces prone to high humidity, such as basements and attics.

In terms of technology, both units utilize a robust and energy-efficient compressor system that operates quietly, ensuring minimal disruption during their operation. The dehumidifiers are designed with an innovative control system that allows for humidity settings to be easily adjusted, providing users with full control over their indoor environment. This intelligence enables the units to efficiently operate only when necessary, resulting in significant energy savings.

The Aprilaire 1750A and 1770A feature an automatic drain option, allowing for continuous operation without the need for frequent manual emptying of the water reservoir. This functionality is particularly beneficial in high-humidity areas where regular monitoring may be cumbersome. Homeowners can also appreciate the unit’s easy-to-clean filter, which helps maintain efficient performance and prolongs the life of the dehumidifier.

Both models come equipped with an integrated humidity sensor, which actively monitors the humidity levels in the home. This allows the units to adjust their operation automatically based on the current conditions, optimizing moisture removal while maintaining energy efficiency. The sleek and compact design of the Aprilaire models ensures they can fit unobtrusively into most spaces, while durable construction materials guarantee long-lasting performance.

Moreover, the Aprilaire 1750A and 1770A models are backed by a comprehensive warranty, offering peace of mind to homeowners investing in their comfort and health. Overall, these dehumidifiers are excellent choices for anyone looking to improve air quality and create a healthier, more comfortable indoor atmosphere. Through their advanced features, reliable performance, and user-friendly design, the Aprilaire 1750A and 1770A stand out as leaders in the dehumidification market.