14
VAPORMIST
®
DISPERSION
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.
• Maximum capacity of dispersion tube with conden-
sate drain:
– 1½" (DN40): 56.8 lbs/hr (25.8 kg/h)
– 2" (DN50): 85.2 lbs/hr (38.6 kg/h)
• Orient dispersion tube so that tubelets (steam
orifices) point up.
Mounting nut
3/8"-16 (M10)
Pitch tube toward
drain 1/8"/ft (1%)
Single dispersion tube with
condensate drain
DC-1449
Duct
Interconnecting plumbing
may be hose, tubing or hard
pipe. Insulate tubing and
hard pipe to reduce steam
loss.
VAPORMIST
humidifier
Secure and seal
escutcheon plates
½" O.D. (DN15) condensate drain tube.
Pitch 1/4"/ft (2%) toward escutcheon plate.
1/4" NPT (DN8)
3/4" (DN20) (minimum) condensate
drain tube by installer. Must be
suitable for 212 °F (100 °C) water.
Open drain. Refer to governing codes
for drain pipe size and maximum
temperature requirements.
1" (25 mm)
air gap
Water seal
5" (125 mm)
6" (150 mm)
recommended
Pitch: 1/8"/ft (1%)
Single tube with condensate drain
90° long sweep
or two 45° elbows
See the first
note below.
Pitch: 1/8"/ft
(1%)
OM-351-1
• The dispersion tube must be pitched a minimum of
1/8"/ft (1%) toward the drain when using a conden-
sate drain. Condensate drain tubing must be pitched
a minimum of ¼"/ft (2%) toward the drain.
• When mounting the humidifier above the level of
dispersion tube, 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.
• See the Hose Kit Sizing table on the previous page.
Escutcheon plates:
Dispersion tube Condensate drain
3.25"
(82.5 mm)
3.25"
(82.5 mm)
3.25"
(82.5 mm)
3.25"
(82.5 mm)
VM99-C-0302.pdf 14 11/19/2009 9:51:32 AM
(36 pages)
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