Installation guide
DRI-STEEM Vapor-logic
3
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Main menu: Control modes screen
Control modes
Use the Control Modes screen to set the operational mode of the
humidifier. You can choose from auto, test, standby, or manual
drain.
*O"VUP.PEF the humidifier operates normally. All inputs
and outputs are monitored and controlled. If there is a call for
humidification, the system reacts.
*O5FTU.PEF the controller sequentially cycles on each of the 24
VAC outputs for four seconds (30 seconds for the drain valve) so
that their operation can be confirmed. The analog output linearly
ramps from 0 to 10 VDC and back to 0. If the unit is a GTS, the
combustion air blowers also are ramped up and down. Once all
outputs are cycled on and off, the controller reverts to the Standby
mode.
When the unit is in Test Mode, the Test Status screen appears.
The Test Status screen displays which output is being actuated and
displays voltage level at the analog output. If the unit is a GTS, the
blower tachometer value also appears. The Test Status screen also
displays the current mode of operation. Press the Back key to return
to the Control Modes screen. Press the Main key to return to the
Main Menu.
*O4UBOECZNPEF the humidification system is taken off line. All
humidity control inputs appear but are not acted upon; however,
if the tank temperature falls below the freeze protect set point, the
drain valve opens.
*O.BOVBM%SBJONPEF the automatic drain valve (if so equipped)
opens and the tank drains. All humidifier operation is suspended,
and the drain valve remains open until the unit is taken out of
Manual Drain mode.
5PTFMFDUBOFXNPEFuse the vertical arrow keys to move the
selection pointer on the left side of the screen up or down. When
the pointer is positioned next to your new selection, press Enter.
Your new selection now appears as highlighted text.
Note: The current mode of the humidifier always appears as
highlighted text on this screen.
VL3_IOM.pdf 63 11/19/2009 9:11:15 AM










