GeneralAire DS20 Elite Steam - Manual (Page 13)

Installation, Operating and Maintenance Manual
7: Start-Up And Shut-Down
Important Warnings:
Before starting, check that the humidifier is in perfect condition, that there are no water
leaks and that the electrical parts are dry;
Do not connect power if the humidifier is damaged or even partially wet;
When installation is completed, flush the supply tubing for several minutes by piping water
directly into the drain, without sending it into the humidifier. This will eliminate any scale
or construction dirt that may cause foam when boiling.
Before starting the humidifier, check the following:
The water, electrical and steam distribution connections have been made according to the
instructions contained in this manual;
The water shut-off valve to the humidifier is open;
The external main power fuses or breakers are installed and intact;
All wiring connections to the unit and inside the unit are tight;
The pigtail control wires are connected properly to the humidistat and air flow switch and
that these are both closed indicating a demand for humidity and air flow in the duct;
The steam hose is clear and properly sloped;
The condensate return hose from the distributor is installed, trapped and open to drain;
The drain tubing is correctly connected, trapped and open to drain;
First start-up
When first starting the unit with a clean empty cylinder, the humidifier will operate using a special
start-up routine designed to concentrate the minerals in the water for maximum efficiency. If the
water is very good (low mineral content) this process may take up to several hours before the full
rated production of steam is reached.
Starting the unit
On the right side, rear of the humidifier cabinet are two rocker switches. One is marked I and O;
this is the On/Off switch (I=On, O=Off). Next to it is the manual drain switch.
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To start the humidifier, simply press the top of the On switch (I). If the unit does not
start operating, then check the control devices wired between the pigtail control wires
to be sure they are closed, completing the control circuit.
ON