49
STS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Water quality
MAINTENANCE
WARNING
Hot surface and hot water hazard
Do not touch the tank or drain piping
until the unit has had suffi cient time to
cool, or serious injury can occur.
Opening the drain valve when the
tank is hot can discharge water with a
temperature up to 212 °F (100 °C) into
the plumbing system. This can cause
damage to the plumbing system if the
humidifi er is not properly connected
to a water tempering device such as a
DriSteem Drane-kooler
™
.
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The best way to determine how often your humidifi er needs maintenance is to
remove the tank cover and inspect it for mineral deposits after three months
of duty. Hours of operation and duty cycle will determine your maintenance
schedule, as will water quality.
WATER QUALITY AND MAINTENANCE
Maintenance requirements vary with water quality, because tap and softened
water carry a variety of minerals and other materials in a mix that varies from
location to location. Very hard (high mineral content) water requires more
frequent cleaning and drain/fl ush cycles than water with low mineral content.
Softened water signifi cantly reduces mineral accumulation inside the humidifi er.
Note: Solids, like silica, are not removed in the softening process.
SKIM DURATION
Skim duration determines the quantity of water skimmed with each fi ll cycle
and is fi eld adjustable using the Vapor-logic keypad/display.
Skimming reduces the need for frequent humidifi er cleaning. Each time the
tank refi lls, it fi lls to a level just above the lip of the skim/overfl ow fi tting. A
portion of the fi ll water fl ows out of the skim/overfl ow fi tting to the drain, which
fl ushes minerals left by the previous evaporating cycle and skims away surface
residue.
Both humidifi er cleaning and heated water fl owing to the drain are operational
costs. DriSteem recommends that the user observe and adjust the skim duration
to achieve a balance between reducing mineral buildup and conserving
heated water.
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Humidifier De-scaling Solution
Scale buildup on humidifi er heat exchangers
acts as an insulator, reducing humidifi er
performance while increasing energy costs.
To keep humidifi ers operating as effi ciently
as possible, remove scale with DriSteem's
Humidifi er De-scaling Solution, available for
purchase from your DriSteem representative or
distributor.
The De-scaling Solution cleans without risk
of corroding humidifi er tanks or welds. The
De-scaling Solution also cleans surfaces
unreachable by hand scraping.
DriSteem's Humidifi er De-scaling Solution is the
only approved cleaner/de-scaler for use with
DriSteem humidifi ers. Use of other cleaners/
de-scalers may void your DriSteem warranty.
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