18
CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Single dispersion tube without condensate drain
Mounting nut
3/8"–16 (M10)
CRUV humidifi er
Duct
Secure and seal
escutcheon plates
90° long sweep or
two 45° elbows
See fi rst bullet in
Installation notes
Tube pitch: 2"/ft (15%)
OM-7554
Pitch*
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
Dispersion tube escutcheon plate
OM-7554
A
A
INSTALLATION
Single tube
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifi er. This will result in unacceptable
humidifi cation system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
mc_060210_0843
INSTALLATION NOTES
• Use DriSteem’s hard pipe adapter kit to connect the steam outlet to hard
pipe. Use a hose clamp to connect the steam outlet to steam 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), 2" (DN50), or NPT connection.
• See the Maximum Steam Carrying Capacity and Steam Loss tables on
Pages 16 and 17.
• Orient dispersion tube with tubelets (steam orifi ces) pointing up.
• If mounting the humidifi er above the level of dispersion tube, see “Drip tee
installation” on Page 15.
• Table 18-1 lists hose kit sizes by humidifi er model. Note that the capacities
of Models 30 and 34 require multiple tube assemblies and cannot use
a hose kit. For multiple tube assemblies, see “Rapid-sorb,” beginning on
Page 20.
mc_062810_1030-NA
Steam hose, tubing or pipe. Insulate
tubing and hard pipe to reduce steam
loss. Do not insulate steam hose. See
Table 16-1 for maximum piping
lengths.
* Pitch steam hose, tubing, or pipe toward humidifi er:
– 2"/ft (15%) when using steam hose
– ½"/ft (5%) when using 1½" tubing or pipe
– ¼"/ft (2%) when using 2" tubing or pipe
Dashed lines indicate provided by installer.
mc_062810_0720-CRUV
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.
mc_060110_1555
Dispersion:
FIGURE 18-1: SINGLE DISPERSION TUBE WITHOUT CONDENSATE DRAIN