Aprilaire 400M User manual

P.O. Box 1467
Madison, WI 53701-1467
Phone: [phone] • Fax: [phone]
Form 264 3.12 243534 • †See owner’s manual or details
© 2012 Aprilaire – A division o Research Products Corporation www.aprilaire.com
* = Automatic Digital Control (shown)
** = ManualControl For those rare occurrences where an automatic control is not practical, Aprilaire digital control can be installed in manual mode while still delivering the accuracy and
information you need for optimum performance.
Warranty– All Aprilaire models are warranted for five (5) years from date of installation for parts.
Heat Pumps – lumbing the humidifier to hot water is recommended on all heat pump installations or if it is installed to operate independently of a call for heat. (See ^NOTEfor Model 400)
Bypass humidifiers can be installed on the supply or return plenum.
• Water feed rate for the Model 700, 350, and 360 is 6 gph; the Models 500 and 600 is 3 gph; Model 400 is .7 gph: Model 800 is .6 gph when connected to 120V, 1.1 gph when connected to 208V
and 1.18 gph when connected to 240V. (gph = gallons per hour)
* = Automatic Digital Control (shown)
** = ManualControl For those rare occurrences where an
automatic control is not practical, Aprilaire
digital control can be installed in manual
mode while still delivering the accuracy
and information you need for optimum
performance.
Warranty– All Aprilaire models are warranted for five (5) years
from date of installation for parts.
www.aprilaire.com
3MINIMAL MAINTENANCE, TOTAL CONVENIENCE
To maintain the performance of a portable unit, you must continually monitor the tank levels and clean and fill them regularly.
A whole-home system is installed out of your living space as part of your heating system, providing quiet operation without
the messy tank. For your convenience, simple, easy maintenance is designed into every Aprilaire humidifier.
4ELIABILITY
A good humidifier operates so that working parts are not affected by the build-up of mineral deposits. Aprilaire humidifiers
are designed so the working parts are replaced every humidifier season, eliminating the requirement to clean and scrub vital
components, increasing performance and reliability.
There’s no need to experience the discomfort, health problems or damage to your home and furnishings caused
by air that is too dry. Install an Aprilaire whole-home humidifier with Automatic Digital Control and you’ll never
worry about proper humidity levels in your home again.
What you should look for in a humidifier
1CONTINUOUS AUTOMATIC CONT OL – 24/7
The optimum levels of relative humidity in your home
fluctuate with the changes in outdoor temperature. An
Aprilaire automatic humidifier continually monitors and
responds to both outdoor temperatures and indoor
relative humidity, delivering optimum levels of humidity
throughout your home. You never have to monitor your
settings or wait until you feel uncomfortable. The
automatic set-it-and-forget-it control keeps your home’s
humidity level exactly where you want it.
2WHOLE-HOME CAPACITY
An installed Aprilaire whole-home
humidifier adds the right amount of
soothing moisture to your entire home. To
achieve the same effect with a portable
unit, you would need to place one in every
room of your house.
AP ILAI E WHOLE-HOME
HUMIDIFIE
PO TABLE UNITS
The bottom line....
whole home + a tomatic digital control = peace of mind.
FOR YOUR COMFORT • HEALTH • ENERGY SAVINGS • PROTECTION
Aprilaire offers a full line of comfort accessories that improve indoor air quality throu hout your home.
For the ultimate in quality, performance, reliability and sustainability ask for Aprilaire:
Humidifiers, Dehumidifiers, Air Cleaners, Zoned Comfort Control®, Thermostats and Ventilation.
Aprilaire Humidifier Specifications
A. Unit Size (inches) B. Plenum Opening (inches) Capacity
gpd= gallonsper day Electrical Data
Model 600K 1/600MK
2
Bypass Unit – Uses the furnace blower
to move air through a Water Panel ® .
A. 15-3/8W x 15-3/4H x 10-1/4D 6” dia. round opening
B. 10W x 12-3/4H
17 gpd 24V-60Hz
0.5 AMP
Model 400K
1/400MK 2
Bypass Unit – Uses 100% of water and
evaporative technology that eliminates
the need for a drain.
A. 15-3/8W x 15-3/4H x 10-1/4D 6” dia. round opening
B. 10W x 12-3/4H
17 gpd 24V-60Hz
0.5 AMP
Model 500K
1/500MK 2
Bypass Unit – Designed for smaller
homes.
A. 15-5/8W x 13H x 10-1/4D 6” dia. round opening
B. 9-1/2W x 9-1/2H
12 gpd 24V-60Hz
0.5 AMP
Model 800
Steam Humidifier – For applications when
Evapourative units are less practical
(attics, crawl spaces, closets, milder
winter climates, non-forced air heating
source).
A. 10-1/8W x 20-7/8H x 7-1/8D
B. N/A
11.5 gpd
16.0 gpd
20.5 gpd
23.3 gpd
30.0 gpd
34.6 gpd
120V-60Hz
11.5 AMP
120V-60Hz
16 AMP
240V-60Hz
11.5 AMP
240V-60Hz
11.5 AMP
208V-60Hz
16 AMP
240V-60Hz
16 AMP
Conserves water
^NOTE: Heat pumps – Model 400 can be installed in heat pump applications. However, due to the fact that heat pumps deliver lower
temperature air to the home than gas furnaces, evaporation will be approximately 60 % of rated capacity. (With other Aprilaire models hot
water can be used instead ofcold to maximize evaporation. However,due to the nature of the wicking water panel in the Model 400 hot water
provides less benefit.) As such, your dealer will need to take the size and age of your home into consideration to ensure the Model 400 will
provide satisfactory comfort andprotection through adequate humidification.
Whole-Home Humidifiers
Solve indoor dryness
and get the
very best
whole-home comfort.
OUTDOO TEMPE ATU E [˚C]
WARRANTY
YEAR
FIVE
†
RP 243534_CAN186:RP 237574 186 4/27/12 12:33 PM Page 1

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I ITATION AND
DISCOMFO T:
When you heat your
home, indoor humidity
levels fall below the
optimum range. This
causes you to experience
the discomforts of annoying
static shocks and being “too
cold” at normal
temperatures.
UNHEALTHY AI :
Viruses thrive in low humidity
conditions and can actually
increase the likelihood of
getting colds, flu and other
upper respiratory ailments.
The American Society of
Otolaryngology advises
the importance of preventing
an overly dry environment
because it significantly
increases susceptibility
to infection.
HOME DAMAGE:
When heated air isn’t
properly humidified, it
causes walls and ceilings
to crack and wood floors
and trim to separate.
Expensive musical
instruments can go out
of tune and electronic
equipment can fall victim
to static electric charges,
requiring expensive repair
or replacement.
HIGHE ENE GY COSTS:
Dry air robs the moisture
from your skin, making you
feel colder, which means
you turn up the heat. Dry
air also shrinks the framing
around doors and windows,
resulting in gaps that let in
cold air from the outside,
making your home less
energy efficient.
The air inside your home is drier than you think.
Heating yo r home dries o t the air. The res lting dry air absorbs moist re from
yo and everything inside yo r home. Even newer, tighter b ilt homes will
s cc mb to the negative effects of air that is too dry.
Every home needs a humidifier. Enjoy the benefits of whole-home humidification The Aprilaire Advantage
P OVIDE TOTAL comfort
Heating your indoor air dries out your skin. This is one factor to
feeling itchy but can also make you feel chilly.
This cold effect is not the only discomfort caused
by too dry air. Annoying static electricity is
another indication of low humidity levels. Proper
relative humidity (RH) will reduce this discomfort.
Aprilaire whole-home humidifiers provide
maximum comfort throughout your entire home—every hour,
every day, all season long, without the mess and inconvenience
of portables.
HELP P OTECT YOU FAMILY’S health
Air that is too dry can make you more susceptible to catching
cold or flu viruses. How? Dry air dries out your nasal
membranes and makes the lining of your nose more susceptible
to bleeding and infections. Also, low levels of humidity have
been linked to the speedier progression and transmission of
viruses in the air*.
Proper humidity is a key factor to staying healthy
in winter. By keeping your sinuses and airways
moist, you reduce the potential for bacteria and
viruses to enter your body. Aprilaire humidifiers
are proven most effective at providing optimum
levels of humidity.
Preserve YOU HOME AND FU NISHINGS
The addition or reduction of moisture drastically affects the
qualities, dimensions, and weights of many materials.
For example, wood, leather, paper, and cloth all contain water.
Paper, plastic, cloth, fibres, glue, skin and practically everything
else in the home shrink as they lose water, and swell as they take
on water. f the water loss is rapid, warping and cracking can
take place. As the RH changes, the condition and dimensions of
the materials change, as constantly as the weather. This is why
humidity must be added and controlled.
Furniture construction is affected as glue dries out, joints
separate, and cracks appear. Plaster and drywall dries out,
pianos, organs, and other musical instruments lose their tone.
Pieces of art, books, and documents dry out and can break or
crack.
Your home and its furnishings make up
what is likely your largest investment.
By providing constant humidity control,
Aprilaire humidifiers help to keep them
in good condition, maintaining
their value and extending their life.
SAVE MONEY ON energy BILLS
Studies suggest approximately 74% of a home’s infiltration
occurs at the home’s envelope (perimetre walls, windows, and
doors). A published study indicates the framing around doors,
windows, etc., will have less shrinkage when the proper inside
RH is maintained. Therefore, proper inside RH may reduce
infiltration of outside air, because the cracks between the
framing and the supporting structure will be reduced. With
minimum shrinkage, there is less crackage, reducing infiltration,
thus increasing energy conservation.
An Aprilaire whole-home humidifier
also allows you to feel warmer at
lower thermostat settings. The U.S.
Environmental Protection Agency
reports that you can save up to 4% on
your heating bill for every degree you
lower your thermostat.
* 1. Department of Microbiology, Mount Sinai School of Medicine article, influenza Virus Transmission Is Dependent on Relative Humidity and Temperature; 2007; New York, New York, United States of
America http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.0030151
2. Oregon State University College of Oceanic and Atmospheric Sciences www.pnas.org/cgi/doi/10.1073/pnas.0806852106
Get green with greater
comfort from Aprilaire
Evapourative humidifiers use forced-air heat to provide pure vapour
humidity; preventing minerals from entering the air stream. The Model
400K (pictured) is also is considered a
"green humidifier" because it uses 100% of
the water with no water being wasted.
Drain
Relative Humidity (RH) indicates the amount of water vapour, in percent, actually
in the air compared to the maximum amount that the air could hold under the
same conditions. The warmer the air, the more moisture it can hold.
Air in the home heated to 21˚ C can hold about eight grains of moisture per cubic
foot. That is 100% RH. f there are only two grains per cubic foot in the home, this
is 1/4 of the air capacity or 25% RH.
So, what happens to the air when it’s heated? Your furnace will bring in outdoor
air to be heated. During the winter months it’s very common to find outdoor RH at
70% and air temperature at +10˚ C. When this air is heated to 21˚ C, the indoor RH
drops to 6%, this is similar dryness to desert conditions. The only solution is to
add water vapour to the air – humidification.
Yo r home co ld be as dry as the Sahara Desert!
Humidifica ion, he process of adding mois ure o he air, is one of he mos impor an aspec s
of o al indoor comfor , ye i ’s one of he leas unders ood. One reason is ha humidi y is an
in angible. I can’ be seen, ouched, or smelled. I has no colour, no sound. However, i s
presence, when con rolled properly, offers many proven benefi s.
Forced Air Heat
Duct
Water Panel®
Feed Tube
Water
Distribution Tray
Dry Air
Overflow
Humidified Air
(Vapor)
Evaporative
humidifiers use
forced-air heat
to provide pure
vapour humidity;
preventing
minerals from
entering the air
stream.
Steam
Evaporative
Supply to
House
Inside View of
Canister Canister
Dispersion
Tube
Electrodes
Humidified Air
Air
Handler
Canister
Electrodes
Reliabili y |Whole-home Capaci y |Au oma ic Con rol |Simple Main enance |5-Year Warran y
Steam humidifiers
boil water creating
steam, the steam is
introduced into the
air stream through
a dispersion tube
mounted in the
duct.
1
2
3
4
5
Digital Control
provides accurate
information and
automatically
delivers proper
humidity levels
continually;
regardless of
temperature or
conditions.
1. Know your relative humidity.
2. Know when your system is
running.
3. Know when to replace the
water panel. (Evapourative only)
4. Know immediately when
service is needed.
5. Turn on the HVAC blower
for humidification
Digital Control
Ask Your Indoor Air Quality Professional to ecommend the ight Choice for Your Home.
Application
Recommendation
Evapourative Steam
Home Size
Up to 4,200 q. ft. tight home
 
Up to 6,200 q. ft. tight home

Other
Variables
Space to mount on duct

No freezing concern

Lowe t co t to in tall
 
Ea ie t to maintain
 
Lowe t co t to operate

Low heating y tem run-time
 
Heat pump in tallation
 
Po ibility of freezing

Cannot mount on duct

Aprilaire offers a full line of evaporative and steam humidifiers. Both technologies are effective at delivering the right levels of
humidity throughout your entire home; however, it’s important that the right product is selected to ensure your satisfaction.
Model 400K
RP 243534_CAN186:RP 237574 186 4/27/12 12:33 PM Page 2