8
CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Piping:
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 hu
mid i fi er from fl oor drain to prevent fl ash steam from rising into the hu mid i fi er.
• Dashed lines indicate provided by installer.
•
The water supply inlet is more than 1" (25 mm) above the skim/overfl ow port, eliminating the pos si bil i ty of backfl ow or si phon ing 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.
Install plumb
DC-1133
Steam steam hose
Shock arrester recommended to
reduce water hammer
Skim/overfl ow port
Drain
If run is over 10' (3 m), increase
pipe to 1¼" (DN32)
1" (25 mm) air gap
Pitch 1/8"/ft
(1%)
2" (51 mm)
recommended
Open drain required. See fi rst note below.
Tank surfaces will reach
212 °F (100 °C) when
operating. Provide outer
protection from direct
contact, but allow for
natural ventilation.
Water inlet strainer
Water supply inlet
12" (305 mm)
minimum
¾" (DN20) union for skim, drain, and overfl ow connection;
plumbing rated for 212 °F (100 °C)
Tank support
If water piping to humidifi er is nonmetallic, we
recommend a 2” (50 mm) metallic water seal or loop
in the supply line to isolate steam during maintenance.
mc_071210_1603
Tap/softened water
FIGURE 8-1: CRUV (TAP/SOFTENED WATER) FIELD PIPING OVERVIEW
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)
Heater terminal cover
