Specifications

15
VAPORMIST
®
DISPERSION
RAPID-SORB dispersion assembly
Notes:
• Use DRI-STEEM's hard pipe adapter kit to connect
the steam outlet to hard pipe. Use a hose clamp to
connect the steam outlet to vapor hose. Use a hose
cuff and clamps to connect the steam outlet to
tubing.
• Thin-walled tubing heats up faster than heavy-walled
pipe causing less steam loss at start-up.
• Hard pipe or tubing diameter must match
VAPORMIST steam outlet size 1½" (DN40) or
2" (DN50).
• See the Maximum Steam Carrying Capacity and
Steam Loss tables on Page 17.
• Position dispersion tubes and tubelets perpendicular
to airflow.
• Pitch header toward condensate drain.
• Make sure header and tubes are square in the duct,
slanting only to allow the pitch of the header.
• Secure header at both ends.
• Dashed lines indicate provided by installer.
• Dispersion tube sizes:
– 1½" (DN40)
– 2" (DN50)
• When mounting the humidifier above the level of the
RAPID-SORB, see the drawing on Page 16.
• Failure to follow the recommendations on this page
may result in excessive back pressures on the
humidifier. This may lead to dispersion tube(s)
spitting, steam blowing through water seals, or
leaking gaskets.
Dispersion tube
escutcheon plate
Condensate drain
3/4" NPT (DN20)
DC-1448
Duct
L-bracket
VAPORMIST
humidifier
Header pitch:
1/8"/ft (1%)
minimum
3/4" (DN20) copper
Open drain.
Refer to local codes
for drain pipe size and
maximum temperature
requirements.
1" (25 mm) air gap
5" (125 mm)
minimum
6" (150 mm)
recommended
Airflow
Dispersion tube
Point tubelets perpendicular to airflow
Slip coupling or
hose cuff
Support bracket that has 0.421"
(11 mm) mounting holes at top,
bottom and end
Pitch: 1/8"/ft (1%)
Position L-bracket so that flange
is upstream of dispersion tubes.
Drawing shows L-bracket
positioned for airflow back to front.
Secure and seal
escutcheon plates
Interconnecting
plumbing may be
hose, tubing or
hard pipe. Insulate
tubing and hard
pipe to reduce
steam loss.
90° long sweep
or two 45° elbows
See the first note below.
OM-351-1
3.25"
(82.5 mm)
3.25"
(82.5 mm)
VM99-C-0302.pdf 15 11/19/2009 9:51:32 AM