Specifications

Page 22 • DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual
Figure 22-1:
Rapid-sorb in a horizontal airflow with header outside the duct
L-bracket
CRUV humidifier
Duct
Secure and seal escutcheon
plates
90° long sweep
or two 45° elbows
OM-7550
¾" pipe thread (DN20) copper
6" (150 mm) recommended
Header pitch: 1/8"/ft (1%)
minimum
1" (25 mm) air gap
5" (125 mm)
recommended
Condensate drain ¾" pipe
thread (DN20) copper
Support bracket that has
0.421" (11 mm) mounting
holes at top, bottom and end
Airflow
Position L-bracket so that flange is upstream of dispersion tubes.
Drawing shows L-bracket positioned for airflow back to front.
Dispersion tube
Point tubelets perpendicular to airflow
Slip coupling or hose cuff
Pitch
(see Note 1)
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.
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.
OM-351-1
A
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
A
Installation
Dispersion:
Rapid-sorb
Header outside of duct, horizontal airflow
1. Mark and cut holes in the ductwork for the dispersion tubes. Use
the L-bracket as a template to mark the holes on the duct floor.
2. Temporarily, loosely suspend or support the header below
the final location. Vertical balance point of the dispersion
tube length dictates where the header should be suspended or
temporarily supported.
3. Mount the dispersion tubes to the header with the slip coupling
or hose cuff (provided).
• When installing slip couplings for 1½" (DN40) dispersion
tubes, take care not to shear the O-rings.
• Set the slip coupling on the header stub or dispersion tube so
the O-ring is resting on the face of the tubing.
• Rotate the slip coupling as you push it onto the tubing.
• The O-rings are lubricated at the factory. If additional
lubrication is necessary, DO NOT use a petroleum-based
lubricant.
Dispersion tube escutcheon plates
mc_062810_0815-CRUV
Notes:
1 Pitch vapor hose, tubing, or pipe toward Rapid-sorb:
– 2"/ft (15%) when using vapor hose
– 1/8"/ft (1%) when using tubing or pipe
2 Use DRI-STEEM’s hard pipe adapter kit to connect steam outlet to hard
pipe. Use a hose clamp to connect steam outlet to vapor hose. Use a hose
cuff and clamps to connect steam outlet to tubing.
WARNING
Hot surface and steam hazard
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.
mc_060110_1555