Specifications

Page 30 • DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual
Operation
Start-up and operation:
LW series controller
The LW series controller is a custom microprocessor-based water
level controller for DRI-STEEM humidifiers. The features of this
controller are:
• Water level control
• Automatic drain and flush
• Variable skim times
• End-of-season drain
• Onboard diagnostics: Ready water, Full, and Drain LEDs to
assist troubleshooting
When power is activated, the solenoid-operated water fill valve
opens, filling the evaporating chamber until the water level reaches
the top probe (see Figure 3-1), then the fill valve closes.
To ensure that a water seal is created in the field-installed water
seal:
1. Disconnect probe plug and cable from probe rod assembly
(located on top of the tank), allowing fill valve to energize and
tank to fill.
2. Let fill water overfill humidifier tank and flow out of
skim/overflow port for several seconds to fill the water seal in
the drain line.
3. Reconnect probe plug and cable. Create a call for humidify to
ensure fill valve opens.
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.