Aprilaire 350, 360, 400, 500, 700 Owner's Manual

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Aprilaire 350, 360, 400, 500, 700 Owner's Manual

Humidifiers

Owner’s Manual

For Models 350, 360, 400, 500, 600 & 700

Includes Safety & Operating Instructions

and Warranty Information

READ AND SAVE THESE INSTRUCTIONS

TABLE OF CONTENTS

Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Operating Instructions – Models 400, 600 & 700

• Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

• Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Operating Instructions – Models 350, 360 & 500 . . . . . . . . . . . . . . . . . . . . . . .7

Effect of Water Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Annual Summer Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Periodic Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

MAINTENANCE INSTRUCTIONS

Models 350 & 360 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Model 400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Model 500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Model 600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Model 700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

WARNING

CAUTION

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 the Aprilaire Humidifier Control to “OFF” or lowest setting before servicing.

TABLEINTRODUCTIONOF CONTENTS

Thank you for your recent Aprilaire® Humidifier purchase. We appreciate your business and are pleased to add your name to our growing list of customers. You have invested in the highest quality equipment available. Aprilaire manufactures whole-house indoor air quality products and is a recognized leader in the heating and air conditioning industry.

Your humidifier will require periodic maintenance to assure continued fine performance. See page 8 to obtain service parts and/or replacement Water Panel® evaporators.

Now, please take a few minutes and read this booklet. This will familiarize you with the benefits you will receive from the equipment you just purchased and help you understand the routine maintenance that will be required.

Be sure to register your Humidifier warranty online at:

www.aprilaire.com/warranty.

Genuine Aprilaire Replacement Water Panel® evaporators are available from your installing contractor or from most other heating and air conditioning contractors in your area. Use the dealer locator in our web site (www.aprilaire.com) or look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioning Contractors. Purchase only genuine Aprilaire Water Panels to maintain peak performance.

TABLEPRINCIPLEOF COFNTENTSOPERATION

With your purchase of this humidification system, you have invested in a humidifier that operates on the evaporative principle – nature’s own way of adding moisture – providing optimum relative humidity throughout the heating season. It is very possible that you have questions concerning your new humidifier – questions on what it can do for you, and what you should do to receive maximum benefits from it. This booklet is intended to answer these questions.

Nature, in producing an invigorating comfortable April day, combines just the right temperature and the right amount of moisture. Aprilaire Humidifiers employ the same principle, with refinements, to give you the optimum relative humidity for maximum allowable comfort all winter long.

The important considerations in the evaluation of a humidifier are precise control, sufficient capacity, trouble-free performance and minimum maintenance. The operating principle of your Aprilaire humidifier provides all of these advantages. Here, briefly, is the method:

Except for Models 350 and 360, the Aprilaire Humidifier is installed to operate in conjunction with the furnace blower motor. When the Aprilaire Humidifier Control calls for humidity and the blower motor is operating, water flows to the distribution tray located at the top of the humidifier. The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets. It flows by gravity over the Water Panel® evaporator, the heart of the humidifier. Dry, hot air is moved through the moisture-laden Water Panel evaporator where natural evaporation takes place. The now-humidified air carrying moisture in vapor form (nature’s own way) is circulated throughout the home.

Models 350 and 360 use service hot water (140°F maximum) for a heat source, as heat is needed for evaporation. While the water going to the humidifier is hot, the flushing water to the drain will be cold. The heat is extracted during the evaporation process.

The correct water flow is determined by an orifice equipped with each drain type humidifier. When the humidifier is operating, there will be a small, steady stream of water to drain, which flushes away most of the trouble-causing minerals.

Do not use the saddle valve to regulate the water flow. It is designed to be completely open or closed.

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The minerals and solid residue not trapped by the replaceable Water Panel evaporator are flushed down the drain in the Models 350, 360, 500, 600 and 700. This is the most effective and least expensive method to dispose of trouble-causing minerals. The drain also eliminates the problems caused by stagnant water.

There are some homes where drain facilities are not accessible or available. For these situations, or where high water hardness is not a problem, the newest Aprilaire, Model 400, is designed to satisfy these applications.

Trouble-free performance and minimum maintenance are assured by the design features of the Aprilaire Humidifier. All humidifier housing parts that come in contact with water are non-metal and will never rust or corrode. Neither heat nor water will affect them under normal operating conditions.

The Water Panel® evaporator, designed especially for uniform, high evaporation, and the Scale Control Insert (which encases the Water Panel) efficiently traps mineral deposits which are often the cause of damage to working parts in ordinary humidifiers. When properly maintained, no “white dust” will be distributed through the living quarters. The Water Panel evaporator is the heart of the humidifier and must be in good condition to assure high capacity trouble-free performance. It should be changed at least annually with the exception of the Model 400 which should be changed twice per heating season.

Older design water distribution trays have a granular coating in the bottom of the distribution tray to provide even water flow to each of the openings and over the Water Panel evaporator. Do not clean the mineral scale off the bottom of the water distribution tray at the end of the humidification season. If the granular coating is removed, it is not necessary to purchase a new distribution tray, simply apply a small amount of liquid dishwashing soap over the entire inside surface of the water distribution tray. This will allow the water to flow evenly to the Water Panel, provided the humidifier is mounted level in order to achieve maximum capacity.

The current distribution tray incorporates a synthetic fabric liner that replaces the granular coating and is designed to deliver water uniformly over the entire top surface of the Water Panel evaporator, provided the humidifier is mounted level. It is normal for some mineral deposits to form in the distribution tray as it dries out between humidification cycles. These deposits can actually help distribute water in the tray, but if they block the openings, they should be removed as described in the “Periodic Preventative Maintenance” section of this manual.

There are many humidifiers on the market. They all add moisture… with varying degrees of efficiency. None, however, offer the features, design, and performance incorporated into your new Aprilaire Humidifier.

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TABLEOPERATINGOF COINTENTSSTRUCTIONS – MODELS 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 5)

Your Aprilaire Humidifier Control is installed in the cold air return duct. During the first heating season, your 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. During the next 24-48 hours it may be necessary to adjust the dial for more or less humidity, depending on your personal comfort and home’s requirements. Refer to “TABLE 1 – 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 1 – Operation Guide”.

TABLE 1 – Operation Guide

Condition

Solution

Condensation on windows

Reduce the setting on the control dial

 

by 1 increment.

Lack of humidity

Increase the setting on the control dial

 

by 1 increment.

 

 

Humidifier does not operate

Turn dial to “Test/Reset.” Make certain

 

furnace is operating in heat mode.

 

If humidifier still doesn’t operate,

 

contact your heating contractor.

 

 

Humidifier won’t shut off

Turn dial to “Off.” If humidifier

 

continues to operate, contact your

 

heating contractor.

Test mode

System operation is checked by setting

 

the knob to “Test/Reset.” Make certain

 

furnace blower is operating and furnace

 

is calling for heat. Humidifier will

 

operate for one minute. Be sure to turn

 

the control knob back to the prior setting

 

after checking humidifier operation.

Reset Water Panel change

Turn the control knob to the

indicator

“Test/Reset” position until the “Change

 

Water Panel” light blinks to reset the

 

water panel change indicator timer.

 

(Blower must be operating and furnace

 

calling for heat.) Be sure to turn the

 

control knob back to the prior setting

 

after resetting the timer.

 

 

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