Specifications

2
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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Vapormist humidifiers use heat caused by electrical resistance in submerged
heating elements boil fill water into humidification steam. Water level is
controlled by means of conductivity probes or a float valve, depending on the
water type.
Supply water guidelines
Supply water quality is an important component
of humidifier reliability and maintenance.
Examples:
• Corrosive water can decrease the service
life of the humidifier.
• Excessive water hardness can increase the
humidifier maintenance requirements.
To maximize humidifier service life and
minimize humidifier maintenance, DriSteem
has established guidelines for supply water
See Table 2-1.
FIGURE 2-1: VAPORMIST HUMIDIFIER
OM-2000-X
Water level control
Steam outlet
Fill valve
Evaporating chamber
Shroud
Heating elements
Vapor-logic controller
keypad/display
Table 2-1:
DriSteem supply water guidelines
Total hardness 0 to 500 ppm
Chlorides*
RO or DI water
Softened water
Tap water
* Damage caused by chloride
corrosion is not covered by
your DriSteem warranty.
< 5 ppm
< 25 ppm
< 50 ppm
pH
RO, DI, or softened water
Tap water
7 to 8
6.5 to 8.5
Silica < 15 ppm
You may wish to take action to mitigate
potential negative effects to your humidifier.
Supply water outside of these guidelines may
void your DriSteem warranty. Please contact
your DriSteem Representative or DriSteem
Technical Support if you need advice.
TAP/SOFTENED WATER
Tap/softened water Vapormist humidifiers (shown above) use conductivity
probes to monitor the water level. See Figure 3-2. Water conductivity must
be at least 30 μS/cm for proper operation. Vapormist humidifiers for tap or
softened fill water will not operate with RO/DI water. For RO/DI water, use
Vapormist with the RO/DI water option.
RO/DI WATER OPTION
Vapormist humidifiers with the RO/DI water option (deionized water or water
that has been treated using reverse osmosis) control water level with a float
valve and low water cutoff switch. See Figure 3-3. Float valves are compatible
with RO/DI water only.
Humidifiers with the RO/DI water option are virtually maintenance free and
require little or no downtime.
WATER TYPE CONVERSION
Vapormist humidifiers can be converted in the field for use with tap/softened
water or RO/DI water. Contact your DriSteem representative or distributor for
parts and instructions.
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