Specifications

DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual • Page 9
Installation
Piping:
DI/RO water option
Figure 9-1:
CRUV (DI/RO water option) field piping overview
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 floor drain to prevent flash steam from rising into the humidifier.
• Dashed lines indicate provided by installer.
• The water supply inlet is more than 1" (25 mm) above the skim/overflow port, eliminating the possibility of backflow or siphoning from the tank. No
additional backflow prevention is required; however, governing codes prevail.
• Damage caused by chloride corrosion is not covered by your DRI-STEEM warranty.
Install plumb
DC-1135
Steam vapor hose
Water inlet strainer, by installer
Skim/overflow port
If run is over 10' (3 m), increase
pipe to 1¼" (DN32)
1" (25 mm) air gap
Pitch 1/8"/ft (1%)
6" (152 mm)
recommended
Open drain required. See first note below.
Tank surfaces will reach 212
°F (100 °C) when operating.
Provide outer protection
from direct contact, but
allow for natural ventilation.
If water piping to humidifier is nonmetallic, we recommend
a 2" (50 mm) stainless steel water seal or loop in the supply
line to isolate steam during maintenance
Water supply inlet
12" (305 mm)
minimum
¾" (DN20) union for skim, drain, and overflow
connection; plumbing rated for 212 °F (100 °C)
Tank support
Water supply line:
• ¼" NPT (DN8) connection size
• 25 to 80 psi (175 to 550 kPa) required
water pressure
• First 3’ (1 m) of supply line must
be rated for 212 ºF (100 ºC)
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