24
VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Notes:
•
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.
• Offset humidifi er from fl oor drain to prevent fl ash steam from rising into the humidifi er.
• Dashed lines indicate provided by installer.
•
The water supply inlet is more than 1" (25 mm) above the overfl ow port, eliminating the possibility of backfl ow or siphoning from the tank. No
additional backfl ow prevention is required; however, governing codes prevail.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
VLC-OM-011
Overview, RO/DI water option
OM-4004
Drain valve
Fill
valve
Skimmer
port
Install level
Install level
¾" (DN20) minimum condensate
drain piping rated for 212 °F (100 °C)
Air vent height
must be equal to
or greater than
dimension H2
(see Table 22-1).
Air vent tube
Steam outlet
¾" (DN20) min. drain overfl ow piping rated for
212 °F (100 °C)
¾" (DN20) drain valve
If run is over 10' (3 m), increase pipe to 1¼" (DN32)
Flow line of drain piping after water seal must
be below drain valve to ensure humidifi er
drains correctly.
1" (25 mm) air gap
Overfl ow
Strainer, by installer
6"
(150 mm)
minimum
Water supply line; water pressure 25 psi to 80 psi (172 kPa
to 552 kPa); fi rst 3' (1 m) should be stainless steel tubing. To
isolate steam during system maintenance, put a 2" a (50 mm)
water seal or loop in supply line.
Drain piping
fl ow
line
Pitch 1/8"/ft
(1%)
Open drain required. See fi rst note below.
H1
Optional condensate
return piping from
dispersion unit
See H1 in
Table 23-1
mc_022310_1300
mc_030210_1802
¾" pipe thread
(DN20) dispersion
unit condensate
return inlet
Piping:
FIGURE 24-1: FIELD PIPING OVERVIEW, VAPORSTREAM WITH RO/DI WATER OPTION
FIGURE 24-2: PIPING, VAPORSTREAM
WITH RO/DI WATER, MODELS 2-1
THROUGH 5-1
