Specifications

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OM-7399
Figure 30-1:
Rapid-sorb in a horizontal airflow with header inside the duct
152 mm
Point tubelets (steam orifices) perpendicular to airflow
Duct
Humidi-tech
humidifier
Airflow
Dispersion tube
Slip coupling or hose cuff
90° long sweep or two 45° elbows
Support bracket
127 mm
DN20 pipe thread
drain
DN20 copper
25 mm air gap
Open drain required:
Locate air gap only in spaces with adequate temperature and
air movement to absorb flash steam, or condensing on nearby
surfaces may occur. Refer to governing codes for drain pipe size
and maximum discharge water temperature.
Position L-bracket so that flange is upstream of dispersion tubes. This
drawing shows the L-bracket positioned for airflow back to front
Pitch header toward drain 1%
Secure and seal
escutcheon plate
Pitch*
* Pitch vapor hose, tubing, or pipe toward Rapid-sorb:
– 15% when using vapor hose
– 1% when using tubing or pipe
Installation
WARNING
Hot surface and steam hazard
Dispersion tube, steam hose, tubing, or
hard pipe can contain steam, and surfaces
can be hot. Discharged steam is not
visible. Contact with hot surfaces or air
into which steam has been discharged can
cause severe personal injury.
Header inside of duct, horizontal airflow
1. Mark and cut holes in ductwork or air handler for steam header
penetration, condensate drain piping, and header support
bracket fastener. Allow 1% header pitch toward the support
bracket when you drill the hole for the header support bracket
fastener.
2. Loosely fasten the header in place.
3. Rotate the header 90° so the header stubs point horizontally in
the duct.
When installing in an air handler, the rotation of the header
is often less than 90°. Typically, due to the condensate drain
piping requirements, the header can be set on the floor of the air
handler, assembled in the vertical position, and then raised and
mounted in place.
Vapor hose, tubing or pipe.
Insulate tubing and hard
pipe to reduce steam loss.
Do not insulate vapor hose.
See Table 16-1 for maximum
piping lengths.
Dashed lines indicate provided by installer.