Aprilaire 1770A, 1750A installation instructions Ventilation oR Air Cycling

Page 12

VENTILATION oR Air Cycling

The dehumidifier has outputs available to open a normally closed damper and introduce outdoor air though an outdoor air intake duct.. Ventilation is controlled by the Cycle Period switches, Cycle Time potentiometer, and Vent-Auto/Vent-Timed switches.. If a normally closed ventilation damper is not installed, the dehumidifier will function in Air Cycling mode, activating the HVAC blower to cycle air through the home based on the Cycle Period and Cycle Time..

DUCTING & WIRING

Required Components

Aprilaire Model 6506, 6” Normally Closed Damper

24 VAC Transformer (10VA min..) for Ventilation Damper

Optional Component

8052 Outdoor Temperature Sensor

Figure 19 – Whole-Home with Ventilation

Figure 20 – Ventilation Wiring

DEHUMIDIFIED AIR IS SUPPLIED

DOWNSTREAM FROM A-COIL TO

MINIMIZE EVAPORATION OFF A-COIL

SUPPLY DUCT

HVAC / FURNACE

115 VAC CIRCUIT

FLOOR DRAIN DEHUMIDIFIER

A-COIL

RETURN

DUCT NORMALLY CLOSED VENT DAMPER

AIR IS PULLED FROM

RETURN DUCT

6" NORMALLY

24 VAC

CLOSED DAMPER

(10 VA min)

 

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUNCTIONS IN

THERMOSTAT

HVAC EQUIPMENT

AIR CYCLING

 

 

MODE IF

R

R

DAMPER NOT

C

C

INSTALLED

G

 

 

 

 

 

G

 

W

W

 

Y

Y

OPTIONAL OUTDOOR

DEHUMIDIFIER

CONTROL BOARD

T VEN DEH Rf Cf Gs Gh W DH FLOAT ODT

DAMPERS P EQUIHVACRSWITCH SENSO

CONDENSATE HOSE

(TO COMMON DRAIN OR OUTSIDE)

Ducting Note: Direct ducting the ventilation intake duct to the dehumidifier inlet duct is acceptable if the incoming temperature of the mixed air will be greater than 40°F and less than 100°F.

TEMPERATURE SENSOR

See page 14 for outdoor temperature sensor installation.

A B + - REMOTE

90-1536

90-1537

DETERMINE VENTILATION REQUIREMENTS

CALCULATING AIRFLOW REQUIREMENT

 

 

 

 

 

 

 

 

 

 

 

 

 

1. The MINIMUM ventilation requirement is calculated using

 

 

 

 

 

 

Table 3 – CFM Required

 

 

 

 

ASHRAE 62..2-2007..

 

 

 

 

 

 

 

 

 

 

 

 

Number of Bedrooms

 

ASHRAE Airflow in CFM = [House Area in Sq.. Ft.. x 0..01]

House Sq. Ft.

 

 

 

 

 

 

 

+ [(Number of Bedrooms +1) x 7..5]

 

2

3

4

5

6

Notes: Use ‘Number of Bedrooms +1’ or the ‘Number of

 

 

 

 

 

 

1000

35

40

50

 

 

Occupants’, whichever is larger..

 

 

 

 

 

 

1500

40

45

55

60

70

2. Table 3 shows calculated airflow values to the nearest 5 CFM..

 

 

 

 

 

 

2000

45

50

60

65

75

If more outdoor air is required, a second device is advised..

3. Record the Required CFM.. __________

 

 

 

 

 

 

2500

50

55

65

70

80

 

 

 

 

 

 

 

 

3000

55

60

70

75

85

 

 

 

 

 

 

 

 

3500

 

 

75

80

90

 

 

 

 

 

 

 

12

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Contents Safety Instructions Table of ContentsOverview Whole-Home, see Spot, see Convertible, seeSpecifications Unpacking and ContentsInstall Unit Indoors Do not expose to elements Power Outlet within 8 ft.. of unitLocation Considerations Location NotesMechanical Installation Duct Collars & Backflow DamperDuctwork Recommendations Design AirflowsMechanical Installation Whole-Home installationDrain Basement Ducting & Wiring Attic Ducting & WiringAttic Installation Note Spot installation DIP Switch ConfigurationSequence of Operation Duct Work Grilles with 8 duct collarsDucting & Wiring Wiring NotesConvertible installation Condensate Pan & Normally Closed Float SwitchOptional Component OFF Test Ventilation oR Air Cycling Determine Fresh AIR Delivery Rate CFM DeliveredDetermine Cycle Time Switch Notes Outdoor Temperature Sensor InstallationVent-Timed, Hvac Initiates Ventilation Vent-Timed, Dehumidifier Initiates VentilationVent-Auto Wiring & DIP Switch Configuration Model 70 living space controlLocal Whole-HomeThird-party control ExternalAdjusting Dehumidifier SET Point System CheckoutDehumidification VentilationTroubleshooting LED CodesGreen LED 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.