Specifications

DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual • Page 19
Figure 19-1:
Single tube with condensate drain
OM-7549
Single dispersion tube
without condensate drain
Mounting
nut 3/8" -
16 (M10)
CRUV humidifier
Duct
Secure and seal
escutcheon plates
90° long sweep or two
45° elbows
See first 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 flash steam; otherwise,
condensation may form on nearby surfaces. Refer to governing
codes for drain pipe size and maximum discharge water
temperature.
Installation
Dispersion:
Single tube
Table 19-1:
Hose kit sizing by model
CRUV
model
Hose kit
(vapor hose,
dispersion tube,
and hardware)
Maximum capacity
of dispersion tube
lbs/hr kg/h
2 – 8
1½" (DN40)
hose kit
without drain
28.4 13
10 – 16
1½" (DN40)
hose kit
with drain
56.8 25.8
2" (DN50)
hose kit
without drain
56.8 25.8
21 – 25
2" (DN50)
hose kit
without drain
85.2 38.6
30 – 34
These models require multiple tube
assemblies and cannot use a hose kit.
mc_062310_1520-CRUV
Installation notes (continued)
• Maximum capacity of dispersion tube with condensate drain:
– 1½" (DN40): 56.8 lbs/hr (25.8 kg/h)
– 2" (DN50): 85.2 lbs/hr (38.6 kg/h)
• Orient dispersion tube with tubelets (steam orifices) pointing
up.
• If mounting the humidifier above the level of dispersion tube,
see “Drip tee installation” on Page 15.
• Table 19-1 lists hose kit sizes by humidifier 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
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 humidifier:
– 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