Aprilaire 1820 User Manual

READ AND SAVE THESE INSTRUCTIONS
CAUTION
1. Read all instructions before beginning installation.
2. Improper installation may cause property damage or injury. Installation, service, and maintenance must be performed by a
qualified service technician.
3. Do not use in pool applications. Pool chemicals can damage the dehumidifier.
4. Do not use solvents or cleaners on or near the circuit board. Chemicals can damage circuit board components.
5. Wait 24 hours before running the unit if it was not shipped or stored in the upright position
WARNING
1. 120 Volts may cause serious injury from electric shock. Disconnect electrical power before starting installation or servicing.
Leave power disconnected until installation/service is completed.
2. Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.
3. Dropping may cause personal injury or equipment damage. Handle with care and follow installation instructions.
SAFETY INSTRUCTIONS
TABLE OF CONTENTS
Safety Instructions........................................1
Specifications............................................2
Set Up Dehumidifier for Installation ........................2
Packaging Content .......................................2
Duct Collars ............................................2
Location Considerations...................................3
Installation...............................................3
Leveling ...............................................3
Ductwork Installation.....................................3
Drain Tubing and Condensate Pump Installation ...............4
Model 76 – Crawl Space Control and Wiring ................5
Air Cycling...............................................5
System Set-Up, Check & Start-Up ..........................6
Remote Control – Crawl Space.............................6
Ventilation / Air Cycling...................................7
System Check...........................................7
Crawl Space Using the Dehumidifier Control..................8
Crawl Space Remote Control Using Model 76 .................8
Start-Up ...............................................8
Troubleshooting ..........................................9
Table 1 – Diagnostic Codes................................9
Table 2 – Troubleshooting Guide...........................10
Service Parts............................................11
Model 1820 Dehumidifier
Installation Instructions
1

Aprilaire 1820 Specifications

General

Brand	Aprilaire
Model	1820
Category	Other
Language	English

Summary

Safety Instructions

Specifications

Set Up Dehumidifier for Installation

Packaging Content

Lists all items included in the dehumidifier packaging.

Duct Collars

Instructions on attaching duct collars to the dehumidifier.

Location Considerations

Installation

Leveling

Adjusting the unit's feet to ensure proper drainage and accommodate fittings.

Ductwork Installation

Connecting ductwork to the inlet and outlet for air circulation and noise reduction.

Drain Tubing and Condensate Pump Installation

Plumbing the drain outlet to a condensate pump and wiring the float switch.

Model 76 - Crawl Space Control and Wiring

Air Cycling

System Set-Up, Check & Start-Up

Remote Control - Crawl Space

Steps for setting up the dehumidifier with a Model 76 remote control in a crawl space.

Ventilation / Air Cycling

Configuring the ventilation or air cycling feature of the dehumidifier.

System Check

Performing a system check to verify dehumidifier operation and settings.

Crawl Space Using the Dehumidifier Control

Operating the dehumidifier using its on-board control in a crawl space.

Crawl Space Remote Control Using Model 76

Operating the dehumidifier using the Model 76 remote control in a crawl space.

Start-Up

Information on normal operating modes and protection features during start-up.

Troubleshooting

Diagnostic Codes

Explains diagnostic codes displayed on the control screen and their failure modes.

Service Parts