19
CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-7549
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
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
Pitch*
Open drain required. Locate air gap only in spaces with
adequate temperature and air movement to absorb fl ash
steam; otherwise, condensation may form on nearby
surfaces. Refer to governing codes for drain pipe size
and maximum discharge water temperature.
INSTALLATION
Single tube
OM-351-1
3.25"
(82.5 mm)
3.25"
(82.5 mm)
Condensate drain
A
Dispersion tube
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
A
Escutcheon plates
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_0725-CRUV
Table 19-1:
Single dispersion tube capacities*
Tube size
Insulated
(High-Effi ciency Tubes)
Uninsulated
Without drain
With drain
Without drain
With drain
inches
DN
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
lbs/hr
kg/h
1½
40
29
13.2
65
29.5
28
12.7
62
28.2
2
50
65
29.5
97
44.1
62
28.2
93
42.3
Note:
Single dispersion tube available with face width between 6" (152 mm) up to 120" (3048 mm)
in 1" (25 mm) increments.
*
If face width is <19" (483 mm), tube capacity may be reduced. Consult DriSteem or see
DriCalc for the correct capacity.
*
Hose kits are available that include dispersion tube, 10 ft (3 m) of steam hose, and hardware
Dispersion:
FIGURE 19-1: SINGLE DISPERSION TUBE WITH CONDENSATE DRAIN
