Specifications

Page 10 • DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual
Figure 10-1:
Drane-kooler water tempering device
DRI-STEEM's Drane-kooler, shown mounted
to a CRUV 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-7547
Installation
Supply water piping may be of any code-approved material (copper,
steel, or plastic). The fill valve connection size is a ¼" pipe thread
(DN8) fitting. In cases where water hammer may be a possibility,
consider installing a shock arrestor. Water pressure must be
between 25 psi and 80 psi (175 kPa and 550 kPa).
If water piping to humidifier is nonmetallic, we recommend that
the first 3' (1 m) of water supply piping from the humidifier be
metallic with a 2" (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 212 °F [100 °C] minimum). If drainage
by gravity is not possible, use a reservoir pump rated for 212 °F
(100 °C) water.
The final connection size is ¾" (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 10' (3 m), increase the pipe
size to 1¼" (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.
mc_062810_0930-CRUV
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.
mc_030910_1440
Piping:
Supply water and drain piping