Aprilaire 1750A, 1770A installation instructions OFF Test

Page 11

Convertible installation (continued)

DIP SWITCH CONFIGURATION

HVAC FAN ON: Activating the HVAC fan during Whole-Home dehumidification is recommended because it offers better circulation and balancing of indoor air conditions.. Running the HVAC fan during dehumidification does not affect moisture removal efficiency.. During spot dehumidification, the HVAC fan will not be turned on regardless of the position of the switch.. If the switch is put in the HVAC FAN OFF position, air is pulled through the unit, dehumidified, and circulated solely by the dehumidifier blower..

CYCLE PERIOD: This determines how frequently the dehumidifier will sample the air to check the humidity level.. Set to 1 hour and adjust as needed..

CYCLE TIME: The cycle time potentiometer must be set to OFF for proper operation..

SEQUENCE OF OPERATION

Figure 18 – Convertible DIP Switch Settings

SYSTEM SETUP

LOCAL

1

 

 

 

ON

EXTERNAL

 

 

 

HVAC FAN OFF

2

 

 

 

HVAC FAN ON

 

 

 

 

WHL HOUSE

3

 

 

 

 

CONVERTIBLE

 

 

 

 

VENT-AUTO

4

 

 

 

 

VENT-TIMED

CYCLE PERIOD

 

1

 

 

 

 

 

ON

30 MIN.

 

 

 

 

 

 

 

2

 

 

 

 

 

1 HOUR

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

2 HOUR

 

4

 

 

 

 

 

 

3 HOUR

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

MIN.

 

0

 

 

 

 

 

 

 

60

MIN

 

 

 

 

 

 

 

MIN.

OFF TEST

CYCLE TIME

90-1538

Whole-Home sampling will occur with the first HVAC fan (Gs) call within the Cycle Period and will override Spot dehumidification.

At the onset of Whole-Home sampling, the dehumidifier damper output turns on, the dehumidifier blower turns on, and the green Status LED flashes.. After three minutes, the dew point of the incoming air is measured and compared to the set point on the control knob.. If the dew point of the incoming air is above the set point, the compressor turns on and the green Status LED switches to solid illumination.. If the dew point is below the set point, the dehumidifier damper output turns off and the dehumidifier blower turns off along with the green Status LED..

If a Whole-Home sampling does not occur, Spot sampling will occur at the end of the Cycle Period, if not actively dehumidifying the whole- home.. At the onset of spot sampling, the dehumidifier blower turns on and the green Status LED flashes.. After three minutes the dew point of the incoming air is measured and compared to the set point on the control knob.. If the dew point of the incoming air is above the set point, the compressor turns on and the green Status LED switches to solid illumination.. If the dew point is below the set point, the dehumidifier blower turns off along with the green Status LED..

The dew point of the incoming air is continuously monitored during compressor operation. When the dew point of the incoming air falls below the set point on the control knob, the dehumidifier damper output turns off and the dehumidifier compressor and blower turn off along with the green Status LED..

After the dehumidifier blower has turned off, one minute must elapse before it can be turned on again (i.e., following a Whole-Home sampling).. If one minute has not elapsed, the Status LED will flash and the dehumidifier blower will turn on after one minute..

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Contents Table of Contents Safety InstructionsWhole-Home, see Spot, see Convertible, see OverviewUnpacking and Contents SpecificationsLocation Notes Install Unit Indoors Do not expose to elementsPower Outlet within 8 ft.. of unit Location ConsiderationsDesign Airflows Mechanical InstallationDuct Collars & Backflow Damper Ductwork RecommendationsDrain Mechanical InstallationWhole-Home installation Attic Installation Note Basement Ducting & WiringAttic Ducting & Wiring Duct Work Grilles with 8 duct collars Spot installationDIP Switch Configuration Sequence of OperationWiring Notes Ducting & WiringOptional Component Convertible installationCondensate Pan & Normally Closed Float Switch OFF Test Ventilation oR Air Cycling Determine Cycle Time Determine Fresh AIR Delivery RateCFM Delivered Outdoor Temperature Sensor Installation Switch NotesVent-Auto Vent-Timed, Hvac Initiates VentilationVent-Timed, Dehumidifier Initiates Ventilation Whole-Home Wiring & DIP Switch ConfigurationModel 70 living space control LocalExternal Third-party controlVentilation Adjusting Dehumidifier SET PointSystem Checkout DehumidificationRed LED Codes TroubleshootingLED Codes Green LED CodesTroubleshooting Guide Troubleshooting
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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.