The dehumidifier measures the condition of the house air to decide when to run. INSTALLER–PLEASENOTE! 1. INSTALLATION MUST CONFORM TO ALL APPLICABLE STATE OR LOCAL CODES. 2. A DEDICATED 15 Amp circuit is required for proper operation of the dehumidifier. If a dedicated circuit is not available, use a lightly loaded circuit. Do not use an extension cord. 3. For protection of the compressor, unit must be transported and installed in an upright position. If the unit was shipped or stored on its sid

Disconnect electrical power before servicing. CAUTION Sudden operation may cause personal injury or property damage. Unplug the dehumidifier before servicing. READ AND SAVE THESE INSTRUCTIONS I. PRINCIPLE The purpose of the Aprilaire ® Dehumidifier is to keep reduce the unwanted effects The dehumidifier gathers system and measures the condition of can activate the HVAC blower to cycle air through the dehumidifier can also operate an optional II. OPERATING INSTRUCTIONS There are three adjustable

mAINTENANCE Dehumidifier AIR FILTER Under normal circumstances, the filter in the dehumidifier should be cleaned or replaced once a year. A clean filter is necessary to prevent damage to the dehumidifier and allow it to function at full capacity. To remove the filter, first unplug or disconnect power to the dehumidifier, then remove the air filter via the access panel on the side of the dehumidifier. To clean, flush with warm water and detergent solution. After a clean or new filter is reinstall

The green status light below the control setting flashes when the dehumidifier is circulating the air. If the humidity of the air is higher than the setting, the compressor turns on and the green Status light is lit continuously. The dehumidifier turns off after the humidity level of the air has dropped below the setting. Optional – Heating and Cooling System Blower Operation Your installing contractor may have configured the dehumidifier to turn on the heating and cooling system blower when the

Your dehumidifier is designed to remove humidity from your home, maintaining the humidity at a comfortable level and reducing the unwanted effects of high humidity. Use your Aprilaire Dehumidifier to control the humidity that comes into the home from opening doors and infiltration (i.e. outdoor air entering through the building envelope). You can reduce the amount of humidity that enters the home by closing windows, doors and/or fireplace flues when the outdoor humidity is high and by drying clo

All models have a distribution tray above the Water Panel, which should be inspected annually and cleaned of excess mineral deposits. Older models have a granular coating in the distribution tray. Do not scrape the granuals out of the tray. Newer models have a fabric liner in the distribution tray. 1. Disconnect electrical power to the HVAC and shut off water supply. 2. Disconnect the water line at the inlet compression nut. 3. Remove the in-line strainer from inside the inlet side of the valve

After the Water Panel is replaced, turn the Control knob to the “Test/Reset” position until the green “Humidifier On” light flashes, to reset the Water Panel change timer. OPERATING INSTRUCTIONS – MODELS 350, 360, 500M, 600M & 700M FIGURE C – Manual Humidifier Control 90-1237 Your Aprilaire humidifier is controlled by a Manual Humidifier Control (see Figure C). The Manual Humidifier Control is installed either in the cold air return duct or on an interior wall of the home. With the Manual Humidi

Push the end of the feed tube back firmly into the distribution tray and replace the front cover. 9. Remove the drain line (9) from the bottom of the humidifier. If applicable, flex it to loosen any mineral deposits or blockage. Then flush it with water under pressure. If it does not properly clear, replace it. Slip drain line back onto the drain fitting. Make sure the drain line has a constant downward slope and is not flattened or blocked. 10. Turn on the water supply. Return integral bypass d

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Operating Instructions – Models 400A, 500A, 600A & 700A . . . . . . . . . . .4 • Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 • Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Operating

Refer to TABLE 3 – Operation Guide. 2. During the coldest portion of the first heating season, minor adjustments may be necessary. This is dependent upon your home’s construction. Refer to TABLE 3 – Operation Guide. The RH in your home will now be accurately controlled to meet your needs and should not need further adjustment during future heating seasons. Make note of the dial setting in the event you temporarily move the knob to “OFF” when performing annual maintenance of your Aprilaire humidi