Specifications

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Installation
Supply water piping may be of any code-approved material (copper,
steel, or plastic). The fill valve connection size is a DN10 pipe
thread fitting. In cases where water hammer may be a possibility,
consider installing a shock arrestor. Water pressure must be
between 175 kPa and 550 kPa.
If water piping to humidifier is nonmetallic, we recommend that
the first 1 m of water supply piping from the humidifier be metallic
with a 50 mm water seal or loop in the supply line to isolate steam
from nonmetallic supply piping.
Drain piping may be of any code-approved material (copper, steel,
or plastic rated for 100 °C minimum). If drainage by gravity is not
possible, use a reservoir pump rated for 100 °C water.
The final connection size is DN20 copper for the tank and frame
drains. Do not reduce this connection size. Pipe the tank and
frame drains separately, as shown in Figures 8-1 and 9-1, to prevent
backflow of drain water into the humidifier cabinet.
If the equivalent length of pipe from the humidifier drain to the
plumbing system drain is more than 3 m, increase the pipe size to
DN32.
See Figures 8-1 and 9-1 for more piping instructions.
Important: Install unions in the water supply and drain lines as
shown in Figures 8-1 and 9-1 to allow tank removal.
Figure 10-1:
Drane-kooler water tempering device
DRI-STEEM's Drane-kooler,
shown mounted to a
humidifier, tempers discharged
water. For other Drane-kooler
mounting options or for more
information, contact your
DRI-STEEM representative/
distributor, or view the
Drane-kooler product data
sheet in the literature section
at www.dristeem.com
OM-7398
CAUTION
Hot discharge water
Discharge water can be as hot as 212 °F
(100 °C) and can damage the drain
plumbing.
To prevent such damage from humidifiers
without water tempering, allow the tank
to cool before draining.
Humidifiers equipped with a water
tempering device such as a DRI-STEEM
Drane-kooler need fresh make-up water
in order to function properly. Make sure
the water supply to the water tempering
device remains open during draining.
Excessive supply water pressure
Supply water pressure greater than 80
psi (550 kPa) can cause the humidifier to
overflow.