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HCSTEAM−16/−35 SERIES
Basic Humidifier Operation
STEAM
CYLINDER
FILL CUP
USER INTERFACE / DISPLAY
ON / OFF & SET BUTTONS
DRAIN PUMP
FILL VALVE
DRAIN TANK
TEMPERING VALVE
STEAM HOSE ADAPTER
WATER
INLET AND
FILTER
Figure 1. Basic humidifier components
CAUTION
SCALDING HAZARD!
The humidifier has heated parts (100
5
C/ 212
5
F).
The HCSteam−16/−35
is an electrode humidifier. It produces
steam for humidification by passing electric current through
metal electrodes (7
, figure 2
) immersed in water inside a
plastic steam cylinder (5). There are no heating elements.
Steam output is directly proportional to the conductivity of the
water, and the amount of electrode immersed in the water.
On a call for humidity, the HCSteam−16/−35 humidifier con-
troller opens the water fill valve (1) and allows water to en-
ter the cylinder. A flow restrictor (4) prevents the unit from
filling too quickly or with too much pressure. The water
flows up the fill tube (2) and into the fill cup (3)
.
Water then
flows over the dam in the fill cup (3), creating a 1" air gap
that prevents contaminated water backflow into feed lines.
Water then flows through the fill tube (6) and into the bot-
tom of the steam cylinder (5). Any backflow or overflow of
water travels through the overflow hose (13) to the drain.
HL
DT
13
OVERFLOW
HOSE
2
FILL TUBE
6
FILL TUBE
3
FILL CUP
4
FLOW
RESTRICTOR
1
FILL VALVE
11
DRAIN
PUMP
10
TEMPERING
VALVE
CYLINDER
FULL PROBE
9
STEAM
OUTLET
8
ELECTRODE
7
STEAM
CYLINDER
5
STRAINER
12
Figure 2. Basic humidifier operation
As the water fills the cylinder, it will reach the electrodes (7)
and current will begin to flow. As the water continues to fill
the cylinder, the current will increase, and this is monitored
by an amperage transformer connected to one of the pow-
er wires and located on the electronic controller. When the
