READ AND SAVE THESE INSTRUCTIONS HUMIDIFIERS OWNER’S MANUAL For Models *HUMD200A, 300A, 500A Includes Safety & Operating Instructions and Warranty Information * May be "A" or "T" 10006174 B2203330A 5.04 Pub No.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Operating Instructions • Automatic Humidifier Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 • Manual Humidifier Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Effect of Water Characteristics . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION Thank you for your recent purchase of our humidifier. The addition of this product to your heating and cooling system will increase your level of comfort by adding just the right amount of moisture to your indoor environment. During the heating season, your humidifier will not only make you feel more comfortable, but it will help protect your home and your furnishings, as well. Your new humidifier is easy to use and easy to live with.
I. YOUR HUMIDIFIER Your new humidifier has been installed to operate in conjunction with the blower motor in your furnace. When the Humidifier Control calls for humidity and the blower motor is operating, water flows to the distribution tray located at the top of the unit. The water is evenly distributed across the width of the tray and over the Humidifier Pad. Dry, hot air is moved through this moisture laden Humidifier Pad where it is evaporated into a vapor.
II. OPERATING INSTRUCTIONS Models HUMD300A and HUMD500A with Automatic Humidifier Control: (Manual Humidifier Control-see pg 4) Your Automatic Humidifier Control is installed in the cold air return. During the first heating season, your Automatic Humidifier Control needs to be set initially to match your home’s condition. Please follow these steps when adjusting your control (refer to Figure A). 1. Turn the dial setting knob to “5,” which is within the normal range.
Your Automatic Humidifier, is a high precision system that will accurately maintain the relative humidity in your home. For every 1°F change in outdoor temperature, the control will automatically adjust the indoor relative humidity (RH) by 1/2%. If you would like to determine the RH in your home, follow these steps: 1. Determine the outdoor temperature. 2. Activate the furnace blower by setting your thermostat fan switch to the “On” position, or setting your thermostat to a higher temperature. 3.
To check the humidifier’s operation, note the current setting and set the Automatic Humidifier Control to the test mode when the furnace blower motor is operating. Water will flow into the humidifier for 1 minute and then it will turn off. This insures the unit is operating properly. Do not leave the control in the test mode as it will not operate. Reset the control to it’s original setting.
To check the humidifier operation, set the humidifier control above the click point, make sure that the water saddle valve is open and that there is electricity to the unit. Generally, the furnace and blower motor must be operating for the humidifier control to function. After the humidifier has operated for several minutes and water is entering the unit and coming out at the drain, reduce the humidifier control setting below the click point and the unit should automatically shut off.
IV. ANNUAL MAINTENANCE For best performance, we recommend that you replace the Humidifier Pad in your Humidifier annually. To obtain a replacement: • Call the installer of your humidifier. This information is often found on your equipment. • Call your heating and air conditioning dealer. • Look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioner Contractors.
VI. PERIODIC PREVENTIVE MAINTENANCE NOTE: Periodic inspection and preventive maintenance of your total heating system is important for efficient and safe operation. Your heating dealer should perform humidifier service at the same time. All models are equipped with an in-line water strainer and orifice as shown below. These parts should be inspected and cleaned periodically to assure continued proper unit performance. INSPECTION AND SERVICE INSTRUCTIONS 1.
CAUTION! Sudden operation may cause personal injury or property damage. Turn humidistat or humidifier control to “OFF” or lowest setting before servicing. 4 6 1 5 8 3 2 7 90-820 1. Front Cover 2. Drain Hose 3. Bypass Damper 4. Humidifier Pad Assembly 5. Distribution Tray 6. ”V” Notches 1. Front C Pad 7. Humidifier 2. Drain H 8. Scale Control Insert 3. Bypass 4. Water P Assem 5 Distribu 1. Note humidifier control setting and turn dial to the “OFF” position. 2. Turn off water supply. 3.
*HUMD500A *MAY BE “A” OR “T” MAINTENANCE INSTRUCTIONS for HUMIDIFIER MODEL *HUMD500A WARNING 120 volts may cause injury from electrical shock. Disconnect power and shut off water supply before servicing. Sudden operation may cause personal injury or property damage. Turn humidistat or Humidifier Control to “OFF” or lowest setting before servicing. CAUTION 3 4 5 2 7 1. Humidifier Cover Assembly 2. Base Assembly 3. Humidifier Pad Assembly 4. Distribution Tray 5. "V" Notches 6. Humidifier Pad 7.
LIMITED WARRANTY HUMIDIFIER *HUMD0200A, 300A, 500A (First letter may be preceded by an “A” or “T”) (Parts Only) This limited warranty is extended by American Standard Inc., to the original purchaser and to any succeeding owner of the real property to which the humidifier is originally affixed, and applies to products purchased and retained for use within the U.S.A. and Canada.
SERVICE AND HUMIDIFIER PAD REPLACEMENT RECORD Date Dealer Name
Printed in U.S.A.
