20
RTS HUMIDIFIER RX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Piping Overview
FIGURE 20-1: RTS HUMIDIFIER FIELD PIPING OVERVIEW FOR -3 AND -4 UNITS
INSTALLATION
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 the cabinet.
• Dashed lines indicate provided by installer.
• The water supply inlet is more than 1" (25 mm) above the overflow port, eliminating the possibility of backflow or siphoning from the tank. No
additional backflow prevention is required; however, governing codes prevail.
• Install a union in the water supply and drain lines as shown to allow tank removal.
Unions by installer
1" NPT or BSP (DN25)
tank drain, skimmer
and p-trap piping,
Rated for 212 °F (100
°C), if piping runs over
10' (3m) increase size
to 1¼" (DN32)
1" (25.4 mm) air gap
Spill funnel. Plumb
to floor drain
Open floor drain
OM-8079
Supply water
Steam hose (maximum run 10' [3 m]).
May also use tubing.
Water supply line:
• 3/4" NPT or BSP (DN20)
connection size
• 25 to 80 psi (175 to
550 kPa) required water
pressure.
Water shock arrester
recommended, by
Installer
Inline strainer
