3
ANDEN AS150 SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Product overview
SUPPLY WATER
There are benefits and trade-offs to consider when the application allows a
choice between hard and softened water:
Hard water: The benefit of hard water is less frequent draining and filling
than with softened water, which results in better energy and water efficiency
and more consistent steam output. However, cylinder replacement could
be more frequent with hard water, because hard water scale coats the
electrodes. The harder the water, the more frequent the need for a new
cylinder.
Softened water may be used in the AS150 series electrode humidifier.
However, softened water ions stay in solution to much higher concentrations
than hard water ions. The result can be more frequent draining and filling,
which results in less energy and water efficiency, and less consistent steam
output. While softened water can reduce scale build-up in the cylinder, it
can also shorten cylinder electrode life.
CONTROLLER
The Model AS150 humidifier Vapor-logic®controller features menus for all
humidifier functions, with a Web interface for access to all functions via
Ethernet.
* On-off switch for control board — not a safety shut-off to humidifier power wiring.
AS150 Vapor-logic keypad/display
Softkeys for direct
menu access
Navigation buttons
for item selection
Controller on-off switch*
Status display and
menu selection
FIGURE 3-1: AS150 SERIES HUMIDIFIER CONTROL PANEL
Table 3-1:
Supply water guidelines for AS150
series electrode humidifiers
Supply water
conductivity
125* to 1250 μS/cm (roughly
comparable to water hardness
of 10 to 36 grains per gallon).
Chlorides Not limited
pH 6.5 to 8.5
Silica < 15 ppm
Demineralized, deionized, and reverse-
osmosis water cannot be used.
Supply water outside of these guidelines may
void your Anden warranty. Please contact
your Anden Representative or Anden Technical
Support if you need advice.
* For optimal low conductivity operation
enable the Mini Drain feature in your Vapor-
logic controller: Main > Setup > Anden
management > Mini Drain > Enable.
