Page 10 • DRI-STEEM XT Series Electrode Steam Humidifier Installation, Operation, and Maintenance Manual
Supply water and drain piping
(continued)
Humidifier drain piping
Drain piping must be code-approved copper or steel rated for 212 °F
(100 °C) minimum. The final connection size is ¾" (DN20) copper
for the steam cylinder drain. Do not reduce this connection size.
See Figures 8-1 and 9-1 for typical installation dimensions and
requirements.
If drainage by gravity is not possible, use a reservoir pump rated for
212 °F (100 °C) water.
A 10" (254 mm) piece of hose is provided to function as the flexible
connection from the drain cup to the field installed drain plumbing.
A D29 hose clamp is provided to secure the drain hose to the drain
cup.
See Figure 10-1 for drain piping detail.
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).
Figure 10-1:
Drain piping detail
OM-7379
Note:
* A D29 bolt hose clamp and black rubber hose
ship with each humidifier. These parts can also be
ordered from DRI-STEEM. See the replacement parts
section of this manual for part numbers.
Hose clamp
(field supplied)
D29 bolt hose clamp
Black rubber hose
¾" (DN20) copper
Open drain
1"
(25 mm)
air gap
Drain cup
Pitch 1/8”/ft (1%)
towards drain
XT_IOM_Jan_2008.pdf 12 11/19/2009 10:13:34 AM
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