Aprilaire 800 Series User manual

READ AND SAVE THESE INSTRUCTIONS
Model 800 Steam Humidifier
Owner’s Manual
Includes Safety & Operating Instructions
and Warranty Information
Steam Humidifier

Safety Cautions .............................................. 2
Introduction ................................................. 4
Principles of Operation ........................................ 4
Sequence of Operation ........................................ 5
Installation Options and Effect of Water Characteristics.............. 6
Operating Modes ............................................. 7
Display Panel ................................................ 8
Operating Instructions – Digital Humidifier Control .................. 9
• Digital Humidifier Control Indicator Lights ..................... 9
• Blower Activation ......................................... 9
• Automatic Mode......................................... 10
• Manual Mode ........................................... 11
Check the Humidifier Operation ................................ 13
Additional Information........................................ 14
Maintenance ............................................... 14
Limited Warranty............................................ 16
TABLE OF CONTENTS
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CAUTION
ATTENTION INSTALLER
Read this manual before installing. This product must be
installed by qualified HVAC and electrical contractors and in
compliance with local, state, federal, and governing codes.
Improper installation can cause property damage, severe
personal injury, or death as a result of electric shock, burns,
or fire.
Read all cautions and instructions.
Read this manual before performing service or maintenance
procedures on any part of the system. Failure to follow all
cautions and instructions could produce the hazardous
situations described, resulting in property damage, personal
injury, or death.
Failure to follow the instructions in this manual can cause
moisture to accumulate, which can cause damage to structure
and furnishings.
SAFETY CAUTIONS

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CAUTION
HOT SURFACES AND HOT WATER
This steam humidification system has extremely hot surfaces.
Water in steam canister, steam pipes, and dispersion tube can be
as hot as 212°F (100°C). Discharged steam is not visible. Contact
with hot surfaces, discharged hot water, or air into which steam
has been discharged can cause severe personal injury. To avoid
severe burns, follow procedures in this manual when performing
service or maintenance procedures on any part of the system.
DISCONNECT ELECTRICAL POWER
Disconnect electrical power before installing supply wiring or
performing service or maintenance procedures on any part
of the humidification system. Failure to disconnect electrical
power could result in fire, electrical shock, and other hazardous
conditions. These hazardous conditions could cause property
damage, personal injury, or death.
Contact with energized circuits can cause property damage,
severe personal injury, or death as a result of electrical shock
or fire. Do not remove access panels until electrical power is
disconnected.
Follow the shutdown procedure in this manual before performing
service or maintenance procedures on any part of the system.
ELECTRICAL SHOCK HAZARD
If the humidifier starts up responding to a call for humidity during
maintenance, severe bodily injury or death from electrical
shock could occur. Follow the procedures in this manual before
performing service or maintenance procedures on this humidifier.
EXCESSIVE SUPPLY WATER PRESSURE
Supply water pressure greater than 120 psi may cause the
humidifier to overflow.
SHARP EDGES
Sharp edges may cause serious injury from cuts. Use care when
cutting plenum openings and handling ductwork.
EXCESS HUMIDITY
Do not set humidity higher than recommended. Condensation
may cause damage.

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The Aprilaire® Model 800 Canister Steam Humidifier delivers humidity in the
form of steam to the conditioned space via the HVAC system duct or optional
Aprilaire Model 850 Fan Pack. The humidifier generates steam by energizing
two electrodes that extend into a canister of water. Current flowing between
the electrodes causes the water to boil, creating steam. Water is introduced
to the humidifier through a fill valve to a fill cup located in the top of the
cabinet. The fill cup serves as an overflow reservoir and provides an air
gap between the humidifier and water source. The steam canister is filled
from the bottom. The canister is seated in a drain cup assembly which
includes a drain valve. The drain and fill valves work together to maintain
water level in the canister to deliver the rated steam capacity based on
the electrical conductivity of the water and to temper drain water. See
Figure 1 for representation of fill and drain system and canister.
Steam is delivered into the airstream through a dispersion tube mounted
in the HVAC system ductwork. Openings in the dispersion tube are fitted
with “tubelets™” which extend into the center of the tube. The design of
the dispersion tube and tubelets distribute steam over a wide area in the
duct and direct any condensed moisture back into the steam hose.
PRINCIPLES OF OPERATION
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
consistent performance. See page 14.
Please take a few minutes and read this booklet. This will familiarize
you with the benefits you will receive from the humidifier and help you
understand the routine maintenance that will be required.
Be sure to register your humidifier warranty online at:
www.aprilaire.com/warranty.
INTRODUCTION
Genuine Aprilaire Replacement Model 80 Steam Canisters are
available from your installing contractor or from most other heating
and air conditioning contractors in your area. Use the dealer locator on
our web site (www.aprilaire.com) or look in the Yellow Pages under
Humidifying Apparatus or Heating & Air Conditioning Contractors.

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FIGURE 1 – Fill and Drain System and Canister
90-1522
Steam
Outlet
Drain
Supply
Water
Drain Cup
Drain Valve
Canister
Electrodes
High Water
Level Sensor
Flow Control
Orifice
Inlet
Fill V
alve
Overflow
Fill
Fill Cup
SEQUENCE OF OPERATION
When the Automatic Digital Humidifier Control (ADHC) detects humidity
below the set point, and provided the humidifier is turned on and the
HVAC system blower is operating, the internal controller in the humidifier
energizes the electrodes and measures the current flowing through the
water between them. The controller adjusts water level in the canister via
a fill valve and a drain valve to maintain a constant current. The operating
water level in the canister depends on the mineral content of the water
which determines conductivity.
The ADHC has the ability to turn on the HVAC system blower if the
homeowner or installer chooses to utilize that feature. See ADHC
installation manual.

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Your Model 800 Steam Humidifier can be powered with a 120, 208 or
240 volt circuit and operated at either 11.5 or 16.0 amps. The higher the
voltage and amperage the higher the potential output. The operating
voltage and amperage are set by your installing contractor to meet the
humidification needs of your home.
Amperage Voltage Maximum steam capacity (gal/day)
11.5
120V 11.5
208V 20.5
240V 23.3
16.0
120V 16.0
208V 30.0
240V 34.6
It may take several days for the humidifier to reach rated capacity
depending on the input voltage and the electrical conductivity of
the water. 120 volt systems take longer to reach rated capacity than 240
volt systems. The humidifier should always be plumbed to cold water but
the water can be softened or unsoftened. “Hard” water, which has a high
mineral content, and softened water generally have higher conductivity
than naturally soft water. Systems plumbed to higher conductivity water
will reach capacity sooner than systems plumbed to low conductivity
water. As the humidifier operates, minerals build up in the canister, which
increases the conductivity of the water. With a new canister, allowing the
humidifier to operate continuously (along with the HVAC system blower)
will allow it to reach rated capacity in the shortest amount of time.
Canister life is highly dependent on water quality. Canisters in systems
plumbed to water with high concentrations of suspended and dissolved
solids will not last as long as canisters operating on water with less
minerals.
INSTALLATION OPTIONS AND EFFECT OF
WATER CHARACTERISTICS

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END OF SEASON/PERIOD OF INACTIVITY SHUT-DOWN
If the humidifier does not receive a call to operate in 72 hours, the
humidifier controller drains the canister. The drain light will remain on until
there is a humidity call or 24 hours has elapsed. The humidifier will resume
normal operation when a call for humidity is made.
OPERATING MODES
When the humidifier is powered and turned on, the “On/Off” light is
illuminated green.
When the canister is being filled or replenished with water, the “Fill” light
illuminates green.
When the canister is being drained, the “Drain” light illuminates green.
During initial start up with a new canister, the humidifier may run through
a series of fill/drain cycles until the conductivity of the water is in a range
that allows normal operation. During this time, the “Steam” light illuminates
green. If the humidifier cannot produce steam at the rated level after trying
for 168 hours, the “Steam” light illuminates yellow. The humidifier continues
to operate in this state until the rated output is reached.
The conductivity of naturally soft water, hard water, and softened water
changes as the water heats up, but the internal controller adjusts the
water level to maintain a nominal current between the electrodes. Over
the life of the canister, minerals that build up on the electrodes will reduce
their effective surface area and affect the resistance between them. The
operating water level will increase with use until it reaches the high water
level probe. At that point, the “Service” light will flash red indicating that
the canister needs to be replaced. The humidifier will continue to operate
but with reduced output.
When the humidifier begins a drain cycle, the fill valve opens to introduce
cold water into the canister. This is done to prevent hot water from
entering the drain. The drain valve remains open for four minutes to allow
all water to drain from the canister.
Any time power is disconnected or humidifier is turned off, the internal
timer for start-up and drain cycles is reset.
If the humidifier has operated 168 hours without a drain cycle, the drain
valve will open and drain the canister. Normal operation will continue.
If the humidifier is operating and a power failure occurs, once power
is restored, the “On/Off” light will flash green for one minute, then the
humidifier will turn on.

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TABLE 1 – Display Panel
Indicator Light Function
Off Humidifier is turned off or not receiving power.
Solid
Green Humidifier is turned on.
Flashing
Green
Humidifier is preparing to turn on. Occurs if power is
disconnected, then restored with switch ON. Flashes for
one minute.
Solid
Green
Normal Operation. Fill valve is energized allowing water
to flow into canister via fill cup. (Does not illuminate when
tempering water during drain cycle.)
Flashing
Green
Fill and Drain Valves are pulsing to dislodge mineral build-up
in canister. Flashes 10 times in four seconds.
Solid Red
Fault Mode. Indicates canister needs water but cannot fill.
Humidifier shuts down. (Occurs if high water probe does
not detect water after fill valve is energized for 40 minutes.)
Solid
Green
Normal Operation. Humidistat is calling for steam and
humidifier is operating.
Solid
Yellow
Humidifier is operating but is not delivering steam at rated
capacity. Occurs if humidifier has operated for 168 hours
at less than rated capacity due to low water conductivity.
Light will turn green once water conductivity increases and
humidifier is delivering rated capacity.
Flashing
Green
Humidifier is preparing to drain. (Fill valve is open
tempering water in canister.) Occurs when humidifier
is turned off, at end of season drain (72 hours with no
operation) and during forced drain down (168 hours of
operation with no drain activity.)
Fill and Drain Valves are pulsing to dislodge mineral build-up
in canister. Flashes 10 times in four seconds.
Solid
Green
Drain valve is energized and open, draining canister. Valve
remains energized for four minutes.
Indicates end of season shut-down. Occurs if humidifier
does not receive call for humidity in 72 hours. Light remains
on for 24 hours.
Flashing
Red
Canister has reached the end of its life and needs to be
replaced. Occurs after humidifier has operated for at least
168 hours and for an additional 24 hours at a current level
below 75% of the maximum operating current. Humidifier
continues to operate, but at reduced capacity.
Solid Red
Operational problem with humidifier. Humidifier shuts
down. Occurs when unit detects over-current which can be
caused by failure to drain or other system failures. Call your
heating and air conditioning dealer for service.
DISPLAY PANEL

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The Digital Humidifier Control offers two modes of operation, Automatic or
Manual. An explanation of both modes follows. (See Figure 2 on page 10
for Automatic Mode. See Figure 3 on page 11 for Manual Mode.)
When in the Automatic Mode, this system offers the following benefits:
• You will receive the optimum amount of humidity so that your
home and its furnishings are protected from the damaging effects
of excess condensation or low humidity during the heating
season. The Control automatically adjusts your home’s humidity based
on the outdoor temperature, increasing the time maximum comfort is
maintained.
• Simple operation with few adjustments. In the Automatic Mode, the
Control eliminates the need to manually adjust the control when outdoor
temperature changes. It also eliminates the need to turn the dial setting
to “OFF” during the summer season.
OPERATING INSTRUCTIONS – DIGITAL HUMIDIFIER CONTROL
DIGITAL HUMIDIFIER CONTROL INDICATOR LIGHTS
Call Dealer for Service: The red light indicates that the control is not
operating normally and that service is required.
Humidifier On: The green light indicates that the control is operating
normally and sending a call for humidity to the humidifier.
BLOWER ACTIVATION
Set the Blower Activation switch to “ON”, see TABLE 4 – Operation
Guide, to allow the Humidifier Control to activate the furnace fan for
additional humidification. This may be required if the humidifier is
mounted on a heat pump or a furnace with short run cycles.
When the Blower Activation switch is “ON”, the Humidifier Control will
turn on the HVAC blower when humidity is required. In the “OFF” position,
the humidifier will only operate if humidity is required and the HVAC
system is operating.
When the Blower Activation switch is “ON”, the Humidifier Control may
extend the HVAC blower after a heat call for up to two hours. If the HVAC
system has been idle for one hour, the control will turn the blower on for
three minutes to sample household air to determine if humidity is needed.

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Your Aprilaire Humidifier Control must be 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 2).
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 4 – 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 4 – Operation Guide.
The humidity 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
humidifier.
AUTOMATIC MODE
FIGURE 2 – Automatic Mode
90-1235B

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MANUAL MODE
When installed in the Manual Mode (see Figure 3 – internal switch in “MAN”
position and “M” in the display), 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°F the recommended setting will
be 35%. If the temperature is expected to fall to 0°F that evening, then merely
reduce the setting to 25% several hours prior to the temperature change.
See Table 2 for the recommended settings. These settings, which are based
on years of research, represent a compromise between humidity levels that
would be most desirable for comfort and humidity levels that are suitable
for protection of your home and to avoid condensation on your windows. For
example, a wintertime indoor humidity of 50% may be considered ideal for
comfort, but unfortunately, it probably would result in condensation, which
can cause damage to your home. Observing the recommended humidity
levels on your Humidifier Control is an important safeguard. Condensation
of water on the inside surface of windows in the form of fogging or frost
is usually an indication of too much humidity. This same condensation can
occur in other areas in your home, possibly resulting in damage.
TABLE 2 – Outdoor Temperature/Indoor Relative Humidity
Outside Temperature Recommended RH
+40°F 45%
+30°F 40%
+20°F 35%
+10°F 30%
0°F 25%
–10°F 20%
–20°F 15%
FIGURE 3 – Manual Mode
90-1236B

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TEST/RESET
The Test/Reset feature allows the humidifier operation to be checked even
if there is no call for humidity. See “Check the Humidifier Operation” on
page 13.
ADDITIONAL INFORMATION – AUTOMATIC MODE
Your humidifier is a precision system that will accurately maintain the
humidity in your home. For every 2°F change in outdoor temperature, the
Digital Humidifier Control will automatically adjust the indoor humidity
by 1%.
The Digital Humidifier Control will accurately control the humidity in your
home to a maximum of 45%.
The humidity Values in Table 3 are targets based on outdoor temperature
and the Digital Humidifier Control setting. The actual humidity may vary
due to conditions in the home (cooking, showering, etc.).
TABLE 3 – % Relative Humidity Guide
Outdoor Temperature (°F)
-10°F 0°F 10°F 20°F 30°F 40°F
110% 10% 10% 15% 20% 25%
210% 10% 15% 20% 25% 30%
310% 15% 20% 25% 30% 35%
415% 20% 25% 30% 35% 40%
520% 25% 30% 35% 40% 45%
625% 30% 35% 40% 45% 45%
730% 35% 40% 45% 45% 45%
Dial Setting
Relative Humidity (%)

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Set the knob to “Test/Reset”, make sure that the water saddle valve is
open and that the humidifier is on. The HVAC fan must be running for the
humidifier to function. The humidifier will only operate for 1 minute in test
mode. Reduce the Humidifier Control setting to the recommended inside
humidity, depending on the outside temperature. DO NOT LEAVE IN
TEST MODE AS HUMIDIFIER WILL NOT OPERATE.
CHECK THE HUMIDIFIER OPERATION
DIGITAL HUMIDIFIER CONTROL
TABLE 4 – Automatic Humidifier Control 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 turn on. Make certain HVAC blower is operating.
Turn dial to “Test/Reset”. If unit still does
not operate, consult a heating contractor.
Humidifier won’t shut off. Turn control dial to “Off”. If unit continues
to produce steam (steam light on),
disconnect main power to turn off
the humidifier and consult a heating
contractor.
Test mode. Make certain HVAC blower is operating.
System operation is checked by setting
the knob to “Test/Reset”. Humidifier will
operate for one minute.
Red “Call Dealer for Service”
light flashes (Figure 2).
Note the error code on the display (E1,
E2, E3 or E4) and call your heating and air
conditioning dealer for service.

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Be sure to keep fireplace dampers closed when not in use. They provide
an excellent escape route for heat, as well as humidity.
On occasion, indoor moisture producing activities such as clothes drying,
cooking, showers, etc., may raise the humidity level higher than it
should be, even though the Aprilaire humidifier is not operating. Telltale
indications are condensation or frost on cold surfaces such as windows,
doors, walls, etc. If such condensation persists for several hours, your home
should be ventilated to dissipate the potentially damaging excess moisture.
ADDITIONAL INFORMATION
MAINTENANCE
Turn humidifier off and allow humidifier to drain. Disconnect
power before servicing.
Inspect Humidifier at approximately 500 hour intervals or several times
during the humidification season.
• Check system operation and inspect all plumbing connections and piping
for signs of cracks or leaks.
• Inspect drain line to make sure it is not blocked and has constant
downward slope. Clean or replace if necessary.
• Inspect steam hose to make sure it has no low spots and has constant
upward slope from humidifier to dispersion tube in duct. If dispersion
tube is mounted below humidifier, inspect drip tee drain.

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Replace the canister annually and when prompted by the “Service” light.
Use Only Genuine Aprilaire Model 80 Canister.
1. Press On/Off switch to turn humidifier off. Humidifier will drain for four
minutes.
2. Allow humidifier to drain. When the green “drain” LED stops flashing,
disconnect main electrical power to humidifier.
3. Remove front panel.
4. Pull three wires off posts on top of canister. (Two large electrode
conductors and one water level probe conductor.)
5. Loosen hose clamp at top of canister.
6. Slide hose off top of canister.
7. Slide canister up and out of drain assembly. Discard canister.
8. Remove o-ring from drain assembly using small screw driver.
9. Inspect drain assembly and remove any debris. See drain valve cleaning
procedure in Installation & Maintenance manual.
10. Insert new o-ring into slot in drain assembly. (O-ring is provided with
Model 80 canister.) Dampen o-ring with water before inserting canister.
Do not use oil, grease, or any lubricant besides water.
11. Make sure strainer is inserted into bottom of new canister.
12. Insert canister into drain assembly. Position canister with label facing
outward.
13. Slip steam hose over top of canister and tighten hose clamp.
14. Reattach and fully seat three wires to posts on top of canister. (Larger
electrode conductors are interchangeable.)
15. Replace front panel.
16. Inspect drain line to make sure it is not blocked and has constant
downward slope. Clean or replace if necessary.
17. Inspect steam hose to make sure it has no low spots and has constant
upward slope from humidifier to dispersion tube in duct. If dispersion
tube is mounted below humidifier, inspect drip tee drain.
18. Restore electrical power to humidifier.
19. Turn humidifier on and verify green On/Off light is illuminated.
20. See Start-up procedure in Installation, Operation & Maintenance manual.
TO REPLACE THE CANISTER
TO SERVICE FILL VALVE
If water flow from fill valve is restricted, disconnect inlet fitting and remove
in-line strainer using small screw from inlet port. Clean or replace strainer.

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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, model number of product purchased and date of installation to:
Research Products Corporation, P.O. BOX 1467, Madison, WI 53701
Thank you!
Your Warranty Registration information
will not be sold or shared outside of this company.
WARRANTY REGISTRATION
Your Research Products Corporation Aprilaire® humidifier unit is expressly warranted for five
(5) years from date of installation to be free from defects in materials or workmanship except,
however, for the disposable steam canister which will have to be replaced from time to time
depending upon the amount of use.
Research Products Corporation’s exclusive obligation under this warranty shall be to supply,
without charge, a replacement for any part of the humidifier which is found to be defective within
such five (5) year period and which is returned not later than thirty (30) days after said five (5)
year period by you to either your original supplier or to Research Products Corporation, Madison,
Wisconsin 53701, together with the model number and installation date of the humidifier.
THIS WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS CORPORATION FOR ANY LABOR
COSTS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY
YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE HUMIDIFIER ITSELF.
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
SHALL BE LIMITED IN DURATION TO THE AFORESAID FIVE YEAR PERIOD. RESEARCH PRODUCTS
CORPORATION’S LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, OTHER THAN
DAMAGES FOR PERSONAL INJURIES, RESULTING FROM ANY BREACH OF THE AFORESAID
IMPLIED WARRANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED.
THIS LIMITED WARRANTY IS VOID IF DEFECT(S) RESULT FROM FAILURE TO HAVE THIS UNIT
INSTALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR. IF THE LIMITED
WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CONTRACTOR, ALL DISCLAIMERS
OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or
limitation of incidental or consequential damages so the above exclusion or limitations may not
apply to you.
This warranty gives you specific legal rights and you may also have other rights which vary from
state to state.
LIMITED WARRANTY
P.O. Box 1467 • Madison, WI 53701-1467 • Phone: [phone] • Fax: [phone]
www.aprilaire.com
10009860 4.12
B2205754A
© 2012 Aprilaire – A division of Research Products Corporation
Printed in U.S.A.

LIRE ET CONSERVER CES INSTRUCTIONS
Humidificateur à vapeur modèle 800
Manuel d’utilisation
Comprend les directives sur la sécurité
et le fonctionnement ainsi que les
renseignements sur la garantie
Humidificateur à vapeur

Précautions de sécurité ...............................................2
Introduction ........................................................4
Principes du fonctionnement...........................................4
Séquence des opérations .............................................5
Options d’installation et effet des caractéristiques de l’eau ..................6
Modes de fonctionnement.............................................7
Panneau d’affichage .................................................8
Directives d’utilisation – commande numérique de l’humidificateur............9
• Voyants lumineux de la commande numérique de l’humidificateur .........9
• Activation du ventilateur ..........................................9
• Mode automatique ..............................................10
• Mode manuel ..................................................11
Vérifier le fonctionnement de l’humidificateur............................13
Renseignements supplémentaires .....................................14
Entretien..........................................................14
Garantie limitée ....................................................16
TABLE DES MATIÈRES
- 2 -
MISE EN GARDE
À L’INTENTION DE L’INSTALLATEUR
Lire ce manuel avant d’effectuer l’installation. Ce produit doit être installé
par des entrepreneurs en électricité et en CVC qualifiés et en conformité
avec les codes locaux, provinciaux, fédéraux et en vigueur. Une mauvaise
installation peut causer des dommages matériels, des blessures graves ou
mortelles à la suite d’un choc électrique, de brûlures ou d’un incendie.
Lisez toutes les mises en garde et les instructions.
Lire ce manuel avant d’effectuer toute procédure de service ou d’entretien
sur toute pièce du système. Le non-respect des mises en garde et
instructions pourrait provoquer les situations dangereuses décrites et
causer des dommages matériels et des blessures graves ou mortelles.
Le non-respect des instructions se trouvant dans ce manuel peut
provoquer une accumulation d’humidité pouvant causer des dommages
à la structure et aux meubles.
PRÉCAUTIONS DE SÉCURITÉ

- 3 -
MISE EN GARDE
SURFACES CHAUDES ET EAU CHAUDE
Les surfaces de ce système d’humidification à vapeur sont extrêmement
chaudes. L’eau dans la cartouche de vapeur, les tuyaux à vapeur et le tube
de dispersion peuvent atteindre une température de 100 °C (212 °F). La
vapeur évacuée n’est pas visible. Tout contact avec les surfaces chaudes,
l’eau chaude évacuée ou l’air dans lequel la vapeur a été évacuée peut
causer des blessures graves. Pour éviter les brûlures graves, suivez les
directives de ce manuel lorsque vous effectuez toute procédure de service
ou d’entretien sur toute pièce du système.
DÉBRANCHEMENT DE L’ALIMENTATION ÉLECTRIQUE
Débranchez l’alimentation électrique avant d’installer le câblage
d’alimentation ou d’effectuer toute procédure de service ou d’entretien
sur toute pièce du système d’humidification. Le non-respect de cette
directive peut causer un incendie, un choc électrique et d’autres
situations dangereuses. Ces situations dangereuses pourraient cause
des dommages matériels et des blessures graves ou mortelles.
Tout contact avec des circuits sous tension peut causer des dommages
matériels, des blessures graves ou mortelles suite à un choc électrique
ou un incendie. Ne pas retirer les panneaux d’accès avant que
l’alimentation électrique ne soit débranchée.
Respectez la procédure d’arrêt indiquée dans ce manuel avant d’effectuer
toute procédure de service ou d’entretien sur toute pièce du système.
DANGER DE CHOC ÉLECTRIQUE
Si l’humidificateur se met en marche en réponse à une demande
d’humidité pendant une procédure d’entretien, des blessures graves ou
mortelles peuvent survenir à la suite d’un choc électrique. Respectez
les procédures décrites dans ce manuel avant d’effectuer toute
procédure de service ou d’entretien sur cet humidificateur.
PRESSION EXCESSIVE DE L’EAU D’ALIMENTATION
Une pression de l’eau d’alimentation supérieure à 8,2 bars peut causer
le débordement de l’humidificateur.
BORDS COUPANTS
Les bords coupants peuvent provoquer des blessures graves suite à
des coupures. Faites attention lorsque vous coupez les ouvertures de
la chambre de répartition d’air et manipulez le réseau de conduits.
EXCÉDENT D’HUMIDITÉ
Ne réglez pas l’humidité à un niveau supérieur à celui recommandé.
La condensation pourrait causer des dommages.

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L’humidificateur à vapeur à cartouche Aprilaire®modèle 800 fournit de l’humidité sous
forme de vapeur dans l’espace traité par l’entremise des conduits du système de CVC
ou d’un bloc ventilateur Aprilaire modèle 850 offert en option. L’humidificateur génère
de la vapeur en énergisant deux électrodes qui se prolongent dans une cartouche
d’eau. Le courant s’écoulant entre les électrodes fait bouillir l’eau pour ainsi créer de
la vapeur. L’eau est introduite dans l’humidificateur grâce à un robinet de remplissage
vers un godet de remplissage situé dans la partie supérieure de l’armoire. Le godet
de remplissage sert de réservoir de débordement et fournit un espace d’air entre
l’humidificateur et la source d’eau. La cartouche de vapeur est remplie à partir du fond.
La cartouche est appuyée sur un godet d’évacuation qui comprend un robinet de purge.
Les robinets de purge et de remplissage fonctionnent ensemble pour maintenir le niveau
d’eau dans la cartouche et fournir la capacité nominale de vapeur selon la conductivité
électrique de l’eau et pour tempérer l’eau d’évacuation. Reportez-vous à la Figure 1 pour
une représentation du système de remplissage et d’évacuation et de la cartouche.
La vapeur est fournie dans le flux d’air par un tube de dispersion monté dans les
conduits du système de CVC. Les ouvertures dans le tube de dispersion sont munies
de « tubelets™» (petits tubes) qui se prolongent dans le centre du tube. La conception
du tube de dispersion et des petits tubes distribue la vapeur dans une vaste zone du
conduit et retourne toute humidité condensée dans le boyau à vapeur.
PRINCIPES DU FONCTIONNEMENT
Merci d’avoir acheté un humidificateur Aprilaire®. Nous sommes reconnaissant de
vos affaires et heureux d’ajouter votre nom à notre liste grandissante de clients.
Vous avez investi dans l’équipement de la plus haute qualité qui soit. Aprilaire
fabrique des produits pour la qualité de l’air intérieur de toute la maison et elle est
reconnue comme meneur dans l’industrie du chauffage et de la climatisation.
Votre humidificateur nécessitera un entretien périodique pour assurer une
performance uniforme ininterrompue. Reportez-vous à la page 14.
Veuillez prendre quelques minutes pour lire ce livret. Cela vous permettra de vous
familiariser avec les bienfaits dont vous profiterez de l’humidificateur et vous
aidera à comprendre l’entretien de routine qui sera requis.
Assurez-vous d’enregistrer la garantie de votre humidificateur en ligne à :
www.aprilaire.com/warranty.
INTRODUCTION
Des cartouches à vapeur de rechange authentiques Aprilaire modèle 80
sont offertes par votre installateur ou par la plupart des entrepreneurs de
chauffage et de climatisation dans votre région. Utilisez le localisateur
de concessionnaire sur notre site Web (www.aprilaire.com) ou regardez
dans les Pages Jaunes sous appareil d’humidification ou entrepreneurs
de chauffage et de climatisation.