DRI-STEEM XT Series Electrode Steam Humidifier Installation, Operation, and Maintenance Manual • Page 31
Assembly and installation instructions for a Rapid-sorb installed
with header outside the duct (horizontal airflow)
1. Locate and cut the holes in the ductwork for the dispersion tubes.
Use the L-bracket as a template to locate the holes on the duct
floor.
2. Temporarily, loosely suspend or support the header below the final
location — the vertical balance point of the dispersion tube length
dictates where the header should be suspended or supported
temporarily.
3. Mount the dispersion tubes to the header with the provided
connector, either a slip coupling or a hose cuff.
• When installing slip couplings for 1½" (DN40) dispersion tubes,
take care not to shear the O-rings.
• Set the slip coupling on the header stub or dispersion tube so
the O-ring is resting on the face of the tubing.
• Rotate the slip coupling as you push it on to the tubing.
• The O-rings are lubricated at the factory. If additional
lubrication is necessary, DO NOT use a petroleum-based
lubricant.
4. Position the flange of the L-bracket so it is upstream of the tubes
when the assembly is raised and fastened into position. Fasten the
Dispersion: Rapid-sorb (continued)
OM-7369
Figure 31-1:
Rapid-sorb installed in a horizontal airflow with header outside the duct
XT Series humidifier
6" (152 mm)
Duct
Pitch header toward drain
1/8"/ft (1%)
5" (127 mm)
Airflow
Dispersion tube
Slip coupling or hose cuff
90° long sweep or
two 45° elbows
Pitch*
Position L-bracket so that flange is upstream of
dispersion tubes. This drawing shows the L-bracket
positioned for airflow back to front
Support bracket
Vapor hose,
tubing, or pipe
¾" pipe thread
(DN20) condensate drain
¾" (DN20) copper
1" (25 mm) air gap
Secure and seal
escutcheon plates
Open drain required.
Locate air gap only in spaces with adequate
temperature and air movement to absorb flash
steam; otherwise, condensation may form on
nearby surfaces. Refer to governing codes for
drain pipe size and maximum discharge water
temperature.
Point tubelets (steam orifices)
perpendicular to airflow
Note:
* Pitch vapor hose, tubing, or
pipe toward Rapid-sorb:
– 2"/ft (15%) when using
vapor hose
– 1/8"/ft (1%) when using
tubing or pipe
Adapter
XT_IOM_Jan_2008.pdf 33 11/19/2009 10:13:38 AM
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