Specifications
25
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion:
SDU-E CONDENSATE DRAIN CONNECTION
1. Piping must be minimum 3/4" I.D. (DN20) and rated for 212 °F (100 °C)
minimum continuous operating temperature.
2. Drain line must be piped as shown in Figure 25-1. Provide a 6" (152 mm)
drop prior to a 4" (102 mm) water seal to ensure condensate drainage
from the SDU-E, and to keep steam from blowing out of the drain line.
3. After the water seal, run the drain line to an open drain with a 1" (25 mm)
vertical air gap. Cut the drain line at a 45 degree angle on the end above
the drain to permit a direct stream of water into the drain pipe while
maintaining a 1" (25 mm) air gap.
4. All drain lines must be installed and sized according to governing codes.
5. The drain line should have a union installed directly on the dispersion box
¾" nipple to accommodate future removal of the SDU-E shroud.
6. A drain line and water seal must be connected to the SDU-E fan unit
dispersion box ¾" nipple. If the condensate is not drained from the
dispersion box, standing water will accumulate. See Warning at right.
7. The dispersion box is constructed with a pitch toward the drain; however,
the SDU-E frame must be installed plumb and level for the dispersion box
to drain properly.
mc_052610_1720-NA
WARNING
Hazards of standing water in SDU-E
If standing water is allowed to
accumulate in the dispersion box, it
can:
• Cause bacteria and mold growth,
which can cause illness.
• Affect SDU-E fan unit performance.
• Cause 212 °F (100 °C) water to
discharge from the SDU-E fan unit,
which can cause severe personal
injury.
mc_052610_1725
Install SDU-E frame plumb and level
Union
Elbow
1" (25 mm) air gap
Dispersion box
3/4" pipe thread (DN20) dispersion box drain and P-trap
piping, rated for 212 °F (100 °C)
Spill funnel. Plumb to floor drain.
Open floor drain. Refer to governing codes for drain pipe size and
maximum temperature requirements.
OM-1245
Drain
4" (102 mm)
mc_042710_1445-NA
Mounting SDU-E
• SDU-E requires an installed condensate
drain line and water seal (provided by
installer). See Figure 25-1 and instructions
at left.
• Spread dimensions greater than 3' (1 m)
may require additional clearance. See
Table 27-1).
SDU-I and SDU-E
FIGURE 25-1: SDU-E DRAIN LINE PIPING