Nortec MH Series - Manual (Page 50)

47 | Operation
MH Schematic
Figure 44: MH Reflow Schematic
How the MH Works
The MH is an evaporative humidifier/cooler that uses energy in the air to evaporate water from
its evaporative media. The MH is designed for air humidification or air cooling. Cooling is
achieved using the adiabatic process which decreases air temperature when water is
evaporated. The duct unit with evaporative pads is designed to be installed in an air handler or
a duct. The hydraulic units and control boxes should be installed outside the duct in an
environmentally controlled space.
Humidification / Cooling
 When a demand is received, the MH will;
MHTC Reflow - turn on the pump and UV light and after a short delay activate staging valves
as required to meet demand. Water will flow through the UV light, staging manifold, open
staging valves, and spray bar lines to the spray bars.
MHTC Flow / MHB – Activate staging valves as required to meet demand. Water will flow
through the staging manifold, open staging valves, and spray bar lines to the spray bars.
 Each spray bar has a series of holes which allow water to flow out over a section of
evaporative media. As Water runs down the evaporative media some of it is evaporated by
Overflow
P Trap
UV Light
Pump
Drain Valve
Reservoir
Float
Conductivity
Sensor
Drain
Staging Valves
Spray Bar Lines
Spray Bars
Media
Boxes
Fill Valve
Check Valve
Drain Pan
Staging Manifold
Pressure
Equalization line
To duct
Stage 1 Stage 2 Stage 3
Note: Tank overflow and drain
Connections shown on opposite
sides for clarity.