Specifications
34
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Rapid-sorb
OM-7399
6" (152 mm)
Point tubelets (steam orifices) perpendicular to airflow
Duct
Vapormist
humidifier
Airflow
Dispersion tube
Slip coupling or hose cuff
90° long sweep or
two 45° elbows
Support bracket
5" (127 mm)
3/4" pipe thread
(DN20) drain
3/4" (DN20) copper
1" (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 1/8"/ft (1%)
Secure and seal
escutcheon plate
Pitch*
* Pitch steam hose or tubing toward Rapid-sorb:
– 2"/ft (15%) when using steam hose
– 1/8"/ft (1%) when using tubing
INSTALLATION
WARNING
Hot surface and steam hazard
Dispersion tube, steam hose, or tubing
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.
mc_060110_1555
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 1/8"/ft (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.
4. 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.
Steam hose or tubing. Insulate
tubing to reduce steam loss. Do
not insulate steam hose. See
Table 19-1 for maximum
piping lengths.
Dashed lines indicate provided by installer.
mc_062810_0820-VM
Dispersion:
FIGURE 34-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER INSIDE THE DUCT