22
CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
L-bracket
CRUV humidifi er
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%) min.
1" (25 mm) air gap
5" (125 mm) recommended
Condensate drain
Support bracket that has 0.421"
(11 mm) mounting holes at top,
bottom and end
Air
fl ow
Position L-bracket so that fl ange is upstream of dispersion tubes.
Drawing shows L-bracket positioned for airfl ow back to front.
Dispersion tube
Point tubelets perpendicular to airfl ow
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 fl ash steam; otherwise, condensation may form on nearby
surfaces. Refer to governing codes for drain pipe size and maximum
discharge water temperature.
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.
OM-351-1
A
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
A
INSTALLATION
HEADER OUTSIDE OF DUCT, HORIZONTAL AIRFLOW
1. Mark and cut holes in the ductwork for the dispersion tubes. Use the
L-bracket as a tem plate 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 dis per sion 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 steam hose, tubing, or pipe toward Rapid-sorb:
– 2"/ft (15%) when using steam hose
– 1/8"/ft (1%) when using tubing or pipe
2 Use DriSteem’s hard pipe adapter kit to connect steam outlet to hard
pipe. Use a hose clamp to connect steam outlet to steam hose. Use a
hose cuff and clamps to connect steam outlet to tubing.
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: Rapid-sorb
FIGURE 22-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER OUTSIDE THE DUCT