
P a g e 4 • D R I - S T E E M V a p o r m i s t h u m i d i f i e r
Va p o r m i s t c o m p o n e n t s
Systems 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.
Fill valve closes
Fill valve opens
Low-water cutoff
Figure 4-1:
Water level control for standard
water systems
Figure 4-2:
Vapormist components
VLC-OM-030
1. Control cabinet
The Vapor-logic
3
controller controls all functions of the
humidifier. See Page 7 for more information.
2. Water level control
Tap or softened water systems control water levels electronically
using a three-rod probe (Figure 4-1). DI/RO water systems
control water levels using a float valve (shown on next page) and
low-water cutoff switch.
3. Drain
Duration and frequency of draining can be adjusted through
the keypad. To avoid possible stagnant water and microbial
growth, the humidifier automatically drains if there is no call for
humidity after a user-defined time period (72 hour default).
4. Water skimmer/overflow port
In standard water systems, the water skimmer reduces surface
minerals in the evaporating chamber. Skimming occurs each
time the humidifier fills. The skim time duration is user-
adjustable. DI/RO water systems do not require skimming. In
DI/RO systems, the skimmer port functions as an overflow port.
OM-402-2
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