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8
E. Water Supply and Drain Connections
See Fig. 1
• Water supply inlet is 1/2" female pipe thread (FPT).
• A water supply line shut-off valve and drain valve should be installed. A minimum of
1/4" OD copper tubing is recommended for the water supply line.
• Water supply pressure should be a minimum of 10 PSIG (0.7 bar) and a maximum of
113 PSIG (7.5 bar). If the pressure exceeds 113 PSIG (7.5 bar), the use of a pressure
reducing valve is required.
• Drain outlet is 3/4" FPT.
• Drain line must have 1/4" fall per foot (2 cm per 1 m) on horizontal runs to get good
flow. A vented tee connection is also required for proper flow.
• Drain line should not be piped directly to the sewer system. An air gap of a minimum of
2 vertical inches (5 cm) should be between the end of the drain pipe and the floor drain.
• This dispenser should be installed in accordance with applicable national, state and
local regulations.
• A plumbing permit and services of a licensed plumber may be required in some areas.
Fig. 1
Dispenser
Shut-Off Valve
Drain Valve
Water Supply Inlet
1/2" FPT
Drain Outlet
3/4" FPT
Separate piping to
approved drain.
Two-inch
(5 cm) air gap
Floor
Drain
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