Instruction/ maintenance manual of the product 400 Aprilaire
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READ AND SA VE THESE INSTRUCTIONS Owner ’ s Manual For Models 400, 550, 600 & 700 Includes Safety & Operating Instructions and W arranty Information Automatic Humidifiers.
T ABLE OF CONTENTS WARNING 120 volts may cause injury from electrical shock. Disconnect power and shut off water supply before servicing. CAUTION Sudden operation may cause personal injury or property damage. Turn the Aprilaire Humidifier Control to “OFF” or lowest setting before servicing.
- 1 - Genuine Replacement Water Panel ® evaporators are available from your installing contractor or from most other heating and air conditioning contractors in your area. However, if you still have difficulty in obtaining a replacement Water Panel evaporator, use the dealer locator in our web site (www.
- 2 - With your purchase of a humidification system, you have invested in a humidifier that operates on the evaporative principle – nature’s own way of adding moisture – and will provide the proper relative humidity throughout the heating season.
- 3 - Capacity is high because an average-size home (10,000 cu. ft.) requires the addition of approximately 9 gallons of water per day to maintain 35% relative humidity when the outside temperature is 20°. The smallest Aprilaire Humidifier under most operating conditions, has this humidifying capacity.
- 4 - II. OPERA TING INSTRUCTIONS – 400, 600 & 700 There are 2 possible modes of operation of your Aprilaire Humidifier Control – Automatic and Manual. An explanation of both modes follows: Automatic Mode: (Manual Mode-see pg 6) Your Aprilaire Humidifier Control is installed in the cold air return duct.
- 5 - Your Aprilaire Automatic Humidifier, is a high precision system that will accurately maintain the relative humidity in your home. For every 1° change in outdoor temperature, the control will automatically adjust the indoor relative humidity (RH) by 1 / 2 %.
- 6 - Manual Mode: (Automatic Mode – see pg 4) Your Aprilaire Humidifier Control is installed in the cold air return. It is important to anticipate a drop in outdoor temperature and reduce the setting accordingly to avoid excessive condensation. For example, with an outdoor temperature of 20° the correct setting will be 35% relative humidity.
- 7 - Your Aprilaire Humidifier Control is a precision instrument that can be used to determine the RH accurately in your home during the winter. To do this, follow these steps: 1. Activate the furnace blower by setting your thermostat to a higher temperature.
- 8 - Your humidifier will operate effectively using either hot, cold, hard or mechanically softened water. Whether to use available tap water, even though it may be quite hard, or chemically softened water, is a common concern to homeowners when installing a humidifier.
- 9 - VI. ANNUAL MAINTENANCE VII. ANNUAL SUMMER SHUTDOWN For best performance, we recommend that you replace the Water Panel evaporator in your Aprilaire Humidifier annually with the exception of Model 400 which should be changed twice a season.
- 10 - 1. Disconnect electrical power to the furnace 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 by using a small nail or wire. 4. Flush the in-line strainer clean or replace with a new strainer, Service Department, Part No.
- 11 - 1. Front Cover 2. Feed Tube 3. Integral Bypass Damper 4. Water Panel Evaporator Assembly 5. Distribution Tray 6. “V” Notches 7. Water Panel 8. Scale Control Insert/Float Chamber 9. Overflow Hose 10. Float Cover 11. Float 12. Water Level Sensor Assembly 1.
- 12 - 1. Note Humidifier Control setting and turn dial to the “OFF” position. 2. Turn off water supply. Turn the integral bypass damper (3) to the SUMMER position. 3. Press the tabs in the latches on the top and bottom of front cover (1) and pull cover off base with both hands.
- 13 - 4 5 6 7 8 9 1 2 3 1. Note Humidifier Control setting and turn dial to the “OFF” position. 2. Disconnect electrical power and turn off water supply. 3. Unlatch humidifier front cover assembly (1) from base assembly (2) at the bottom of the cover, lift, and set aside.
- 14 - 1. Note Humidistat setting and turn dial to the “OFF” position. 2. Turn offf water supply. Turn the integral bypass damper (10) to the SUMMER position. 3. At the side of the unit opposite the airflow duct pull front cover (1) off holding with both hands and set aside.
- 15 - Your Research Products Corporation Aprilaire ® Humidifier unit is expressly warranted for one (1) year from date of installation to be free from defects except, however, for the disposable Water Panel which will have to be replaced from time to time depending upon the amount of use.
- 16 - The Aprilaire ® Indoor Air Comfort System is an integrated group of air quality enhancement products designed to work with your heating and cooling system to make your home more comfortable. For the best in indoor air quality, ask your heating and cooling contractor about these fine Aprilaire products, or visit us at www.
- 17 - Date Dealer Name SERVICE AND WA TER P ANEL REPLACEMENT RECORD.
Please… T ake a few minutes to visit us on-line at www .aprilaire.com to register your Aprilaire product. If you do not have on-line access, please mail a postcard with your name, address, phone number, product purchased and date of purchase to: Research Products Corporation P.
An important point after buying a device Aprilaire 400 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Aprilaire 400 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Aprilaire 400 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Aprilaire 400 you will learn all the available features of the product, as well as information on its operation. The information that you get Aprilaire 400 will certainly help you make a decision on the purchase.
If you already are a holder of Aprilaire 400, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Aprilaire 400.
However, one of the most important roles played by the user manual is to help in solving problems with Aprilaire 400. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Aprilaire 400 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
