Nortec SE Series - Manual (Page 48)

45 | Operation
Humidifier Schematic
Figure 42: Humidifier Schematic
How the Humidifier Works
The SETC/P is an atmospheric steam generator that uses energy from pressurized steam
flowing through a heat exchanger submerged in water to generate steam. The SETC/P is
designed for air humidification via steam distributor, blower pack, or steam manifold (SAM-e).
Steam Generation

After initial start-up and tank filling the humidifier will sit in standby mode, awaiting a call for
humidity.

When a call is received, the humidifier will send a signal to the electric actuator. The
actuator will open as required and the flow of boiler steam will begin.

Energy from the boiler steam is transferred to the fresh water tank through a heat exchanger
inside of the unit. This causes the water to boil. Full boil from a cold tank can take up to 15
minutes. On SETC models, the Keepwarm feature can be activated to reduce boil time, see
Idle Mode on page 52.
Steam Line
Steam Distributor
‘P’ Trap
Dual Fill Valve
Fill Box
Float Chamber
‘P’ Trap /
Overflow
Vacuum Break
Drain Pump
Auxiliary Drain
CV Valve
CV Valve Actuator
Steam Trap
Condensate
Return to
Boiler
Drain
Outlet
Heat Exchanger
Tank
Boiler
Steam
Cooling to
Float Chamber
Lower Mixing
Box