Specifications

Page 32 • DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual
Operation
Start-up and operation:
LW series controller
Figure 32-1:
LW series controller board
Bottom water probe input (violet)
1 2 3 4 5 6 7 8
DRAIN TIME SKIM TIME TEST TIMER LOGIC
EOS
v O BR BL T R G W B
Full
light
OM-918
Ready water light
Drain light
Dip switch
settings
Ground mounting holes,
3/16" diameter
Power light
Onboard diagnostics (tap/softened water)
When the green Power light blinks on for one second and then is
off for one second, enough scale has accumulated on the probes
to begin to compromise the quality of the water level detection.
Remove the probe assembly and brush off all scale and tarnish.
See "Troubleshooting" on Pages 40 and 41 for any water level control
issues.
Vapor-logic4 controller
The
Vapor-logic4 Installation and Operation Manual is a
comprehensive operation manual. Refer to it for information
regarding the following features:
• Keypad/display setup and menu information
• Control input signals and functions
• Drain, flush, and skim features
• Safety features
• Alarm screens and fault messages
The manual is shipped with CRUV humidifiers equipped with the
optional vapor-logic4 controller. It is also available at our Web site:
www.dristeem.com
24 VAC hot input (black)
24 VAC common input (white)
Drain valve output (gray)
Timer logic input (red)
Fill valve output (tan)
Ready water output (blue)
Top water probe input (brown)
Middle water probe input (orange)
Important:
Timer logic input wire (see Figure 32-1) must
be connected per wiring diagram for proper
automatic drain/flush and end-of-season drain
operation. Power light blinks off twice at
one-second intervals when these functions are
disabled. Verify wiring with diagram supplied
with humidifier.
Variable skim times (tap/softened water)
The skim time feature removes surface solids and
foam from the water. This keeps the fill valve
open for a certain amount of time after the water
reaches the top probe (see Figure 3-1). The skim
time is factory set for
32 seconds but can be
changed in the field for locations with water that
requires more skimming. See “Skim duration” on
Page 33. See LW series controller board location in
Figure 44-1.