Specifications

DRI-STEEM Vaporstream humidifier • Page 7
Humidifiers using tap or softened water
control water levels electronically using a
three-rod probe. The controller responds
with the above actions when the water level
reaches each rod.
Figure 7-1:
Water level control for standard-water
humidifier
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Vaporstream components
Figure 7-2:
Water level control for DI/RO-water
humidifier
Fill valve
Float rod
Float ball
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5. Heating elements
Low-watt-density Incoloy-sheathed heating elements
ensure operation for many seasons. Constant expansion
and contraction of heating elements sheds mineral scale. In
the unlikely event of heater failure, heating elements can be
removed easily.
6. Terminal strip
All control wiring connections at the humidifier can be made in
this single location.
7. Temperature sensor
Mounted on the evaporating chamber, this sensor enables:
• Over-temperature protection
• Freeze protection
• Preheating, allowing rapid response to a call for humidity
8. Over-temperature thermostat
This safety device shuts down the humidifier if it becomes too
hot. This is one of three levels of safety protection that also
includes the temperature sensor and the water level control
system.
9. Service access
Access cover allows periodic inspection and servicing of the
evaporating chamber.
10. Steam outlet
Steam generated in the humidifier rises through the steam
outlet and travels to the dispersion assembly through vapor
hose or piping.
Humidifiers using DI/RO water control water
levels using a float valve and low-water
cutoff switch.
Fill valve opens when water
level is below this probe.
Low-water cutoff. Power to
heaters is cut if water level
drops below this probe.
Fill valve closes when water
level rises to this probe.
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