Specifications

Page 4 • DRI-STEEM Vaporstream humidifier
Vapor-logic4 controller
Accurate, responsive control
The Vapor-logic4 controller provides accurate, responsive RH
control. PID control tunes the system for maximum performance.
Modbus, BACnet MS/TP, or LonTalk allow interoperability with
multiple building automation systems. Modbus is standard, and
BACnet MS/TP or LonTalk are available options.
Web interface provides the capability to set up, view, and adjust
humidifier functions via Ethernet, either directly or remotely
through a network.
Contactor wear leveling distributes cycles among multiple
contactors for equal wear and longer contactor life.
Cycle counter triggers a message when it’s time to replace
contactors.
USB port allows easy firmware updates, and data backup and
restore capability.
Real-time clock allows time-stamped alarm and message tracking,
and accurate drain and flush scheduling.
Auxiliary temperature sensor/transmitter allows air temperature
monitoring, such as in a duct, and enables temperature
compensation to prevent window condensation.
Programmable outputs allow remote signaling and device
activation.
Multiple-humidifier control allows staged control of up to 16
humidifiers with one controller.
Controller data, such as RH, air temperature, water use, energy use,
alarms, and messages, can be downloaded to a PC for viewing and
analysis. RH, alarms, and service messages can also be displayed via
the keypad or Web interface..
Enhanced diagnostics include:
• Test outputs function using keypad or Web interface to verify
component operation
• Test humidifier function using simulated demand to validate
performance
mc_042710_1500-VLC
Insert a USB flash drive
into the Vapor-logic4
board’s USB port to
perform software
updates, download
data logs, and back
up and restore data.
Keypad/display
Web interface
Softkeys
for direct
menu
access
Navigation
buttons
for item
selection
System
alarms
Tank
status
Set point
System
messages
Mode
Room RH
Steam
output
Tank water
level