Specifications

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Figure 23-1:
Single tube with condensate drain
DC-1449
OM-351-1
3.25"
(82.5 mm)
3.25"
(82.5 mm)
Condensate drain
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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.
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causing less steam loss at start-up.
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outlet size 1½" (DN40) or 2" (DN50).
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tables on Page 16.
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– 1½" (DN40): 56.8 lbs/hr (25.8 kg/h)
– 2" (DN50): 85.2 lbs/hr (38.6 kg/h)
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tube, see the drawing on Page 17.
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in excessive back pressures on the humidifier. This can lead to
dispersion tube(s) spitting, steam blowing through water seals, or
leaking gaskets.
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Figure 23-2:
Escutcheon plates
WARNING!
Dispersion tube, vapor 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.
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Single dispersion tube
without condensate drain
Mounting nut
3/8" - 16 (M10)
Vapormist
humidifier
Duct
Secure and seal
escutcheon plates
90° long sweep or
two 45° elbows
See the first bullet in
the notes below.
Pitch tube toward
drain 1/8"/ft (1%)
½" O.D. (DN15) condensate drain tube.
Pitch ¼”/ft (2%) toward escutcheon plate.
¾" (DN20) (minimum) condensate drain tube
by installer. Must be suitable for 212 °F (100 °C)
water.
¼" NPT (DN8)
6" (150 mm)
recommended
Water seal
5" (125 mm)
1" (25 mm)
air gap
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.
Pitch
(see Note 1 below)
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.
Notes:
1. Pitch vapor hose, tubing or
pipe toward humidifier:
– 2"/ft (15%) when using
vapor hose
– ½"/ft (5%) when using
1½" tubing or pipe
– ¼"/ft (2%) when using
2" tubing or pipe
2. Dashed lines indicate
provided by installer
A
Dispersion tube
Dimension A:
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1½" tubes
tNNGPS
2" tubes
A
VM-IOM-1108.pdf 25 4/21/2010 1:36:22 PM