Aprilaire E100 - User Manual

PLEASE LEAVE THIS MANUAL WITH THE DEHUMIDIFIER OWNER
INSTALLED BY: INSTALLER PHONE: DATE INSTALLED:
1 English
Model E080 & E100
Dehumidifi er
INSTALLATION AND OWNER’S MANUAL
Product Info &
Digital Manual

Summary

Safety Instructions

Operating the Dehumidifier

Details the steps to turn the dehumidifier on using the power switch and control panel.

Maintenance

Cleaning the Filter

Step-by-step guide for cleaning the unit's air filter and clearing service reminders.

Cleaning the Drain

Preparing the Unit for Installation

Installing the Dehumidifier

Installing a Condensate Pan Under the Dehumidifier

Guidelines for placing a condensate pan and using float switches.

Installing the Drain

Installing Ductwork

Ducting the Dehumidifier Inlet and Outlet to the HVAC System

Ducting the Dehumidifier Outlet to the HVAC System with Dedicated Dehumidifier Inlet Register

Wiring

Wiring to the HVAC System

Details for connecting the dehumidifier to the HVAC system.

Wiring to External or Remote Controls

Wiring to a Float Switch

Zoning the Dehumidifier

Installer Setup

Starting Up the Unit and Sequence of Operation

Using the Dehumidifier Control Only

Using a Model 76 as a Remote Control

Using an External Control

Two-Zone Operation

Troubleshooting

Diagnostic Codes

Lists error codes, failure modes, and corrective actions.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The AprilAire Dehumidifier, specifically models E080 and E100, is designed to control humidity levels throughout an entire home. It operates by drawing air into a cabinet where it is filtered and then passes through a sealed refrigeration system. This system cools the air, causing moisture to condense and drip into a drain pan, which is then routed to a floor drain or condensate pump. After moisture removal, the air is reheated and returned to the home, resulting in warmer and drier air.

Function Description:

The primary function of the AprilAire Dehumidifier is whole-home dehumidification. It actively removes excess moisture from the air to maintain a comfortable humidity level, preventing clamminess or musty smells. The unit can be integrated with an HVAC system to pull air from and discharge air to the whole home, or it can operate with dedicated registers for both inlet and discharge. For optimal performance, the dehumidifier should be installed in a location that allows for proper airflow and drainage.

The dehumidifier can be controlled directly via its onboard control panel or through external/remote controls like an AprilAire Thermostat or Model 76 Dehumidifier Control, especially when the unit is in a hard-to-reach location such as an attic or basement. When using a remote control, users can monitor the humidity sensed by the dehumidifier and adjust settings from a convenient location.

Beyond basic dehumidification, the unit offers several advanced features:

• Ventilation: The dehumidifier can activate a normally closed damper to bring in outdoor air through a fresh air intake duct. This feature can be configured with an Outdoor Temperature Sensor (ODT) to limit ventilation during extreme outdoor temperatures.
• Zoning: The dehumidifier can be configured to condition two independent spaces, a Primary Zone and a Secondary Zone. It prioritizes dehumidification in the Primary Zone and then switches to the Secondary Zone once the Primary Zone's needs are met. This requires specific ductwork and dampers to direct airflow to and from the different zones.
• Dehumidification with Air Conditioning (DEH W/AC): The unit can be set to allow or disable dehumidification during active air conditioning, offering flexibility in how humidity is managed alongside cooling.
• RH Offset: An offset can be applied to the onboard humidity reading to align it with other humidity-measuring devices in the home, ensuring consistent readings.

Usage Features:

To operate the dehumidifier, power is applied via the ON/OFF Power Switch located near the power cord. The ON/OFF Button on the control panel then turns the unit on or off. The display shows the current humidity setting, and when sampling, it indicates "AIR SAMPLING" along with the measured humidity level. If the humidity is above the set point, the compressor turns on, and "DEHUMIDIFYING" appears on the display. The unit samples air every 60 minutes or when the humidity setting is lowered.

For energy savings, users are advised to adjust the humidity setting to the highest comfortable level to reduce run time. Turning the dehumidifier off when windows are open, similar to air conditioning, also conserves energy. When vacating the home for extended periods in summer, setting the RH to 55% and the thermostat to a comfortable cooling temperature helps maintain controlled humidity while minimizing energy consumption.

Maintenance Features:

Regular maintenance is crucial for the dehumidifier's efficient operation. The air filter and drain should be checked and cleaned every 6 months.

• Cleaning the Filter: To clean the filter, the unit must be turned off. The filter access door, located on the drain side, is removed by loosening a retaining screw. The filter slides out, can be rinsed with water to remove dust and particles, and then excess water is shaken off. An arrow on the filter frame indicates the correct airflow direction for reinstallation. The "CLEAN FILTER" service reminder will appear on the control every 6 months and can be cleared by pressing the ▲ and ▼ buttons simultaneously for 3 seconds.
• Cleaning the Drain: After removing the filter, the drain insert is pulled out using its finger loop. Both the drain pan and drain insert should be cleaned with a mild detergent. If the drain line has a capped tee or elbow, approximately one cup of vinegar can be poured directly into the tube to clean it. If there's no external access to the drain line, vinegar can be poured into the drain pan where the insert was located. The drain insert must be reinstalled properly, ensuring its tip is gently placed into the drain opening and rocked downwards until it's flush with the filter guide channel. Running the dehumidifier without the drain insert can lead to condensate leaks. Clear, flexible drain tubing should be inspected for excess buildup and replaced if necessary.

The dehumidifier's feet can be adjusted for leveling, which is essential for proper drainage. A top-mounted bubble level helps ensure the unit is level. If a condensate pump is used, additional elevation might be needed, and risers or hanging kits are available. When installing in or above a finished space, a condensate pan is required, and a float switch should be installed in the pan or connected to the condensate pump to prevent overflow.

Troubleshooting information is provided through diagnostic codes displayed on the control screen, such as "E1" for internal sensor issues, "E2" for high refrigeration pressure, "E3" for remote control communication loss, and "E4" for insufficient capacity. Each code has specific actions for resolution, ranging from cycling power to checking connections or calling technical support. Other symptoms like the dehumidifier not turning on, low airflow, or unexpected HVAC fan activation also have corresponding troubleshooting procedures.

Aprilaire E100 Specifications