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•OPERATING TIP: Depending on the type of furnace and
installation, you may notice that after the humidifier has
shut off and the furnace shuts off the humidifier will turn
back on. This is occurring because the control is sensing
residual heat from the heat exchanger after the furnace has
shut off. If you are experiencing this you should change the
control setting until the problem is resolved.
temperature at which your furnace shuts off is too close to
the control's OFF temperature. It may be beneficial to
have the control set to the higher OFF temperature (55˚C
or 65˚C).
However it is important to note, ONLY
CHANGE THE CONTROL SETTING IF NECESSARY.
REDUNDANT CONTROL CIRCUIT –
For use with secondary control switch (sold
separate) Fig 35
Humidifier ON: When the switch senses the
furnace fan running.
Figure 35
Humidifier OFF: When the switch senses the
Pressure Control
furnace fan shut off.
• This setting can be used if for some reason the above 4 different
control settings fail to shut off the humidifier. This is more than
likely occurring as a result of a non-standard heating system,
some sort of supplemental heating, improper humidifier
installation, improper furnace operation, or for some other
unforeseen circumstance. This option may also be used if for
some reason the humidifier will not turn on, this could be
occurring because the furnace is not providing enough heat or it
is not providing the required temperature rise fast enough. All
four of the above control settings have the same ON temperature
requirements. This is ensuring an efficient use of water as there
is a minimum air temperature to efficiently evaporate water. As
well if for some reason you wish to bypass the temperature
feature and have the humidifier operate when the furnace fan
operates. This option requires the purchase and installation of a
separate control switch. Installation instructions for the switch
are included with the kit.
CONTOLLING THE HUMIDITY LEVEL AND HUMIDIFIER OPERATION.
HUMIDIFIER OPERATION.
When starting up the humidifier for operation:
1. Make sure the transformer is plugged in and the water supply
is turned on.
2. Turn the humidistat up high, so it is calling for humidity.
3. Turn your furnace thermostat UP so the furnace cycles ON.
4. Once the Humidisense control senses heat the humidifier will
turn ON. You will know because the green LED on the front of
the humidifier will turn ON.
5. After a few moments you should hear water trickling through
the drain.
6. After your furnace has completed the heating cycle and shut
off (by the thermostat) the humidifier will cycle OFF. You will
know because the green LED on the front of the humidifier will
turn OFF.
Model 7000 Flow Through Humidifier
CONTROLLING THE HUMIDITY LEVEL.
The HUMIDISENSE Humidistat supplied with the unit will
control the amount of moisture added to the air in your home. It
senses the relative humidity in the air and work as the main
ON/OFF switch to control the humidifier, regardless of whether
The
the furnace is on or not.
At the beginning of the heating season it may take sometime to
build up the relative humidity level in your home to the desired
level. For the first few weeks turn the humidistat up high to
ensure the humidifier will turn on with every furnace cycle; after
you feel that you have achieved the desired relative humidity
level turn the humidistat down until it cycles the humidifier OFF.
The humidifier will then work to maintain the relative humidity
at that level.
ACHIEVING AND MAINTAINING A HUMIDITY LEVEL.
Outside conditions are the primary factor affecting the humidity
level in your home; the colder it gets outside the less moisture the
outside air can hold; your home brings in the dry outside aire the
humidifier will work to add moisture to it. As outside conditions
change the humidity level in your home will change as well.
Other factors which will affect humidity levels in the home
include how may air-changes are occurring, the amount of
people occupying the home, air leaks, the use of showers,
exhaust fans, HRV's, and the use of a fireplace or wood stove.
SAFELY OPERATING A FURNACE HUMIDIFIER.
Proper control of the relative humidity level in the home is key to
ensuring good Indoor Air Quality (IAQ) for your home as well as
protecting against hidden moisture damage.
Although a relative humidity environment of 50% + may be
desirable it is also dangerous. Moisture in the air will find its way
to hidden areas such as behind walls, attics, or crawl spaces. If
not properly control high humidity levels can lead to problems
with mold and mildew.
In order to assure you guard your self against such problems we
recommend you set the humidistat no higher than 45%, and if
you are operating the HUMIDISENSE humidistat in manual
mode you follow the table below (also printed on the humidistat
label) as a guide for what set point should be used depending on
outside air temperature.
RECOMMENDED MANUAL HUMIDISTAT SETTINGS
OUT SIDE AIR TEMPERATURE MAXIMUM RELATIVE HUMIDITY SETTING
-20°F /-30°C
-10°F /-25°C
0°F / -20°C
+10°F/ -10°C
+20°F/ -5°C
30%F/ 0˚C
ABOVE
11
15%
20%
25%
30%
35%
40%
45% MAXIMUM
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