Lennox HEALTHY CLIMATE WB2-12, WB2-17, HEALTHY CLIMATE WB2-17A, HEALTHY CLIMATE WP2-18, HEALTHY CLIMATE WP2-18A Operating Instructions Manual
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Humidifiers
504,880M
12/2003
HEALTHY CLIMATE
HUMIDIFIER
OPERATING INSTRUCTIONS FOR MODELS WB2-12, WB2-17, WB2-17A, WP2-18 & WP2-18A
Includes Safety, Operating, and Maintenance Instructions
Introduction
Thank you for your recent Lennox Healthy Climate®Humidifier purchase. We sincerely appreciate your business and are pleased to
add your name to our growing list of customers. 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.
WARNING
Electrical Shock Hazard
Can cause injury or death.
Disconnect all electrical power supplies before
servicing.
Shut off water supply before disconnecting or
tapping into any water supply line.
CAUTION
Risk of Equipment Damage
After humidifier installation is completed, turn water supply
back on.
Principle of Operation
You have purchased a humidifier that operates on the evaporative
principle. It will provide the proper relative humidity (see operating
instructions) all during the heating season. It is very possible that
you have questions concerning what your new humidifier can do for
you, and what you should do to receive maximum benefits from it.
This booklet is intended to answer these questions.
The humidifier operates in conjunction with the furnace blower
motor. When the humidistat calls for humidity and the blower motor
is operating, water flows to the distribution pan located at the top of
the unit. The water is uniformly distributed across the width of the
pan and through a scientifically designed system of outlets. It flows
by gravity over the evaporative media. Dry, hot air is moved through
the moisture-laden evaporative media where evaporation takes
place. The now-humidified air carries moisture in vapor form
throughout the home.
Risk of Equipment Damage
Do not use the saddle valve to regulate water flow.
It is designed to be completely opened or closed.
The correct water flow is determined by an orifice in each unit.
When the unit is operating, there will be a small, steady stream of
water to drain, which flushes away most of the trouble-causing
minerals.
The minerals and solid residue (white dust) not trapped by the
replaceable evaporative media are flushed down the drain. The
drain also eliminates the problems caused by stagnant water. This
is the most effective and least expensive method to dispose of trouble-causing minerals.
Trouble-free performance and minimum maintenance are assured
by the design features of the Lennox Healthy Climate
unit 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 evaporative media, designed especially for uniform, high evaporation, and the scale control insert also efficiently trap 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 evaporative
media must be in good condition to assure high capacity troublefree performance. It should be changed at least annually.
The granular coating in the bottom of the distribution tray is
designed to provide equal distribution of water to each of the openings assuring an even flow of water over the evaporative media. Do
not clean the mineral scale off the bottom of the water distribution
tray. The scale provides an excellent track for the water to follow.
This is actually what we try to simulate with the synthetic coating in
the bottom of the tray. If the coating is removed, it is not necessary
to purchase a new distribution tray. You can accomplish the same
uniform performance by applying a small amount of liquid dish soap
over the entire lower surface of the water distribution tray. This will
allow the water to flow evenly through each of the openings.
CAUTION
®
Humidifier. All
®
1
Operating Instructions
(Humidifier Models WB2-12, WB2-17 & WP2-18)
Automatic Humidifier Controls
(Humidifier Models WB2-17A & WP2-18A)
Your new Lennox Healthy Climate
®
Humidifier is controlled by a
manual humidistat installed either in the living area or in the cold air
return. It is important to anticipate a drop in temperature and reduce
the setting accordingly to avoid excessive condensation. For example, with an outside temperature of 20° the correct setting will be
35% relative humidity. If the temperature is expected to fall to 0° that
evening, then reduce the setting to 25% several hours prior to the
temperature change.
OUTDOOR-INDOOR RELATIVE HUMIDITY TABLE
Observance of the
recommended relative
Outside Temperature Recommended R.H.
+40° 45%
+30° 40%
+20° 35%
+10° 30%
0° 25%
–10° 20%
–20° 15%
humidity level on your
humidistat (see table)
is an important safeguard. Condensation
of water on inside
windows in the form
of fogging or frost is
usually an indication
of excessive relative humidity. The same condensation can take
place in other areas in your home with the possibility of resulting
damage.
CAUTION
Excess humidity can cause moisture accumulation which
allows possible mold growth in your home.
Be sure to keep fireplace dampers closed when not in use. They
provide an excellent escape route for heat, as well as humidity.
The humidistat can be used to determine the relative humidity in
your home during the winter. Turn the dial to the lower setting then
reverse the dial direction slowly until a “click” is heard. At this point,
read the relative humidity on the dial. This will be very close to the
actual relative humidity in your home.
To check the humidifier operation, set the humidistat above the click
point, make sure that the water saddle valve is open and that there
is electricity to the unit. The furnace blower motor must be operating
for the humidifier to function. After the humidifier has operated for
several minutes and water is entering the unit and coming out at the
drain, reduce the humidistat setting below the click point and the
unit should automatically shut off. Now, set the humidistat dial at the
recommended inside relative humidity, depending on the outside
temperature. Follow the suggested settings prior to a drop in the outside temperature.
Your Humidifier is now controlled by the Automatic Humidifier
Control which offers two modes of operation. No other humidification system is automatically controlled for your complete comfort
and satisfaction. When installed in the automatic mode, this system
will benefit you in the following ways:
1. Automatically adjusts your home’s relative humidity (RH) based on
the outdoor temperature.
2. Eliminates the need to manually adjust the control on a potentially frequent basis, a common occurrence with manual humidistats.
3. Precisely controls the relative humidity in your home, and
increases the time in which maximum comfort is maintained,
while protecting your home and its furnishings from the damaging
effects of excess condensation or low humidity.
4. Allows your Humidifier to deliver the optimum amount of humidity
to the home.
5. Eliminates the need to turn the dial setting to “Off” during the
summer season.
Operating Instructions (Automatic Mode)
During the first heating season, your
Automatic Humidifier needs to be set initially
to match your home’s condition. Please follow
these steps when adjusting your Humidifier
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 the “Operation Guide”
(Table 1).
(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”. Make certain furnace blower is
(solenoid does not “click” operating and furnace is calling for heat. If unit still
when control is moved to doesn’t operate, consult a heating contractor.
“Test” position)
Humidifier won’t shut off. Turn dial to “Off”. If unit continues to operate, consult
a heating contractor.
Test mode. System operation is checked by setting the knob to
“Test.” Make certain furnace blower is operating and
furnace is calling for heat. Humidifier will operate for
one minute.
2
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