61
VAPOR-LOGIC
®
VERSION 6 INSTALLATION AND OPERATION MANUAL
OPERATION
Water level control
OM-7580
Fill cup
Overflow
Overflow to drain
Cylinder drain
Water
Electrodes
High water sensor
Water fill line connection
(under cabinet)
ELECTRODE STEAM HUMIDIFIERS
In electrode steam humidifiers (see Figure 61-1), steam output is directly
related to the resistance of the water in the steam cylinder and, therefore, the
conductivity of the water between the electrodes .
Recommended supply water conductivity for XT humidifiers is 350 to 1250 μS/cm .
Higher water levels cover more electrode surface and result in more steam;
lower water levels cover less electrode surface and result in less steam . Since
water conductivity and water level both correlate to steam output, DriSteem
electrode humidifiers employ an algorithm that monitors conductivity and
manages drain and fill events to optimize humidifier performance and provide
proper steam output .
As the water in the cylinder boils into steam, the concentration of conductive
ions increases until it reaches a threshold that triggers a drain and fill event .
This rids the cylinder of highly conductive water and replaces it with less
conductive fill water . The more conductive the fill water and the higher the
demand, the more quickly the threshold is reached, and the more frequently the
cylinder automatically drains and fills to stay within the parameters for proper
steam output .
To prevent overfilling of the cylinder, filling stops if the water level reaches the
high water sensor .
Supply water
Electrode steam humidifiers use tap or softened
supply water . Demineralized, deionized, and
reverse-osmosis water are not conductive
enough for electrode steam humidifiers .
FIGURE 61-1:
WATER LEVEL CONTROL FOR ELECTRODE STEAM HUMIDIFIER
