Specifications

10
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Water supply line:
• 1/4" NPT (DN8) connection size
• 25 to 80 psi (175 to 550 kPa) required water
pressure.
• If water piping to humidifier is nonmetallic,
the first 3' (1 m) of water supply piping from
humidifier should be metallic.
Steam hose (maximum run 10' [3 m]). May also use tubing.
See the DriSteem Design Guide for maximum tubing lengths.
Unions by installer
Shock arrester recommended
to reduce water hammer
3/4" pipe thread (DN20)
tank drain, skimmer, and
P-trap piping, rated for
212°F (100 °C). If piping
run is over 10' (3 m),
increase pipe to 1¼"
(DN32) after P-trap.
1" (25 mm) air gap
Spill funnel. Plumb
to floor drain.
Open drain required.
See first note below.
3/4" pipe thread (DN20) frame
drain and P-trap piping, rated for
212 °F (100 °C)
Frame drain
Cover
Install plumb
DC-1136
Notes:
• 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.
• Offset humidifier from spill funnel or floor drain to prevent flash steam from rising into cabinet.
• Dashed lines indicate provided by installer.
• Water supply inlet is more than 1" (25 mm) above skim/overflow port, eliminating the possibility of backflow or siphoning from tank. No additional
backflow prevention is required; however, governing codes prevail.
• Install a union in water supply and drain lines as shown to allow tank removal.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
2" (50 mm)
12" (300 mm)
2" (50 mm) water seal or loop in
supply line to isolate steam from
nonmetallic supply piping
mc_042710_1327-VM
Piping: Tap/softened water
FIGURE 10-1: VAPORMIST (TAP/SOFTENED WATER) FIELD PIPING OVERVIEW