Figure 2 - K WM11
Piping
• e piping on the unit will usually be copper or any other
locally approved piping. Accessible ½” sweat ttings are
provided on the unit itself. An optional exible stainless
steel connector kit with shut-o valves is available for
connecting the unit to any type of piping system and can
be used with an optional valve control box.
• All piping systems should be designed by a technician
with experience in the various piping arrangements that
work with this type of unit.
• As with any system employing circulated water, the pipes
passing through unheated spaces should be insulated.
NOTE: When using mono-flo or “venturi” fittings, we
suggest placement of a ball valve just after the supply
take-off and before the return is connected.
Piping: Hot Water Boiler
• e unit supply line should be taken from the boiler side
beyond any o-control valve. If the system being used is
a gravity-ow or cast iron hot water system, a separate
circuit must be installed.
Piping: Water Heater
• To install correctly, a technician with knowledge of piping
arrangements and back-o valves must design the piping
system.
Wiring the Unit
• A eld wiring connection is provided on the unit (see
gure 5). Connect wires at this point only.
• e unit is manufactured with a built-in factory wired
aquastat with a set point of 140°F on and 110°F o. e
aquastat may be disabled in the eld if not required (see
application manuals).
