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CARNES HTAH Manual page 8

Commercial, industrial and institutional steam humidifiers

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Humidifiers | Displays & Internal Controls
Calibration Password –
This page is where the Humidifier Unit Code, the four
digit number identifying the humidifier, is programmed
into the unit. This page is password protected, and
number should not be modified by the end user. Contact
the factory if further information is needed.
Corrective Drain Length –
This page is where the Corrective Drain Length is set.
This value represents how much water should be drained
from the cylinder when the humidifier senses a correc-
tive drain is needed. As water boils from the humidifier,
minerals increase in the cylinder causing the water to
get more conductive. Increasing the length of the drain
flushes more conductive material from the humidifier,
decreasing the water conductivity.
The input here is a percentage value. To set the
Corrective Drain Length to drain 20% of the cylinder
during a corrective drain, input 020. To drain all of the
tank, input 100. 30 is the default value, and only multiples
of 10 between 20 and 100 can be entered.
"HELP"
G-8
The help pages consist of maize color buttons labeled
with questions. When a button is pressed, information
will be given answering and/or giving information about
the subject in question. A basic help page consists of text
and/or diagrams to help the user through basic problems.
For example, in the picture above the question of how to
install a high limit humidistat is answered with a diagram
and corresponding text. Some pages consist of more
buttons to help guide a user through different processes.
These buttons can be used and referenced as needed.
Checkboxes –
There are a few operational options that do not need
separate pages, and therefore are only enabled/dis-
abled via checkboxes on the main Settings Page. Their
functionality is described as follows:
The Drain Valve Pulse option is enabled by default. This
option allows the drain valve to pulse when the humidi-
fier executes a corrective drain. This actuates the water
within the drain piping, allowing for minerals buildup to
be discharged more easily. Enabling this option will make
the unit noisier whenever a corrective drain is executed.
The 72-Hour Drain is disabled by default. This option,
when enabled, allows the humidifier to drain the cylinder
completely after 72 hours of idle operation.
The LCD Auto-Dim is disabled by default. This option,
when enabled, will automatically turn off the backlight of
the LCD after 15 minutes of idleness. This feature can
save on energy consumed.
The Kg./Hr Readout is disabled by default. This option,
when enabled, will turn the steam readout on home page,
and in the upper right hand corner of other pages, into
Kg/Hr instead of Lb/Hr.
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