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VAPOR-LOGIC
®
VERSION 6 INSTALLATION AND OPERATION MANUAL
Options and features
OPERATION
SENSOR OFFSETS
All external transmitters shipped with Vapor-logic can be field calibrated
from the Setup menu . For example, if the system is equipped with an RH
transmitter, there is an RH offset setting .
The factory default for all transmitter offset settings is zero . The sensors that
have this adjustment capability are the humidity, duct high limit, temperature
compensation, and dew point transmitters .
AUTOMATIC DRAIN SEQUENCE, TAP/SOFTENED WATER
(See note at right for XT humidifiers .)
When configured to run a tap/softened water humidifier with an automatic drain valve, Vapor-logic
uses an automatic drain sequence (ADS) to reduce mineral accumulation in the tank and drain line,
which decreases tank maintenance .
The automatic drain sequence starts by opening the drain valve to empty the tank . When the drain
duration ends, the fill and drain valves remain open to flush the tank . When the flush duration ends,
the automatic drain sequence is complete and the humidifier resumes normal operation . The default
drain and flush durations are model-specific and can be adjusted in the water management section
of the Setup menu .
Automatic draining and flushing parameters are defined in the water management section of the
Setup menu:
• First, automatic draining and flushing must be enabled .
• Second, the amount of water converted to steam before an automatic drain sequence begins
must be defined (Usage) . Defaults for this value are model-specific and are calculated based on
operating 200 hours at 100% capacity . Go to the Setup menu to view or change this setting for
your humidifier .
• Third, days of the week when the automatic drain sequence can occur must be defined . This
means that once the Usage requirement is met, the automatic drain sequence can occur on the
first allowed day (allowed days default is all days) .
• Last, time of day when the automatic drain sequence occurs must be defined (default value is
midnight) .
For example, if you use factory default settings for the automatic drain sequence, the first automatic
drain sequence will occur at midnight on any day of the week once the model-specific usage
requirement has been met . If you want to change these settings, go to the water management
section of the Setup menu .
Note that the automatic drain sequence is designed for a tap/softened water humidifier with
electric drain and fill valves . Humidifiers using DI/RO water do not require automatic draining and
flushing, but this feature can be enabled if the humidifier has electric drain and fill valves .
Drain algorithm for XT humidifiers
XT humidifiers employ a drain algorithm that
is written specifically for how electrode steam
humidifiers function . See “Electrode steam
