©2014 Thermaco, Inc. All rights reserved • Patented/Patents Pending • Specifications subject to change without notice
Thermaco, Inc. • 646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone (336) 629-4651
MNL-ISCU40000 9
40000 Series
Big Dipper
®
IS System
Plumbing Installation
Locating the Unit
To minimize grease build-up in piping, a Big
Dipper system should be located as close as
possible to the fixture it is serving. The sys-
tem should be visible and easily accessible for
maintenance and inspection. The unit must
be in a level position. Be sure to check the
Specification Sheet for your model for the
exact clearances needed for installation. If
the system is located directly on the floor, the
bottom should be sealed to the floor with an
approved silicone type sealant. Make sure the
height above the Internal Strainer access cover
is enough to remove the strainer basket.
Inlet/Outlet Piping
The inlet and outlet piping connections require
flexible sleeve pipe couplings. Keep outlet pip-
ing as straight as possible. Use only “sweep”
connections. Do not reduce the pipe sizing
on the outlet piping. Do not install “P” trap on
outlet connection of system. (Note: The system
already has a internal gas trap)
Flow Controls
Big Dipper systems are equipped with an internal
flow control located inside the inlet end of the
system. Verify its location and placement prior
to connecting the inlet piping.
Fill Unit With Water Before Applying
Power
Big Dipper systems, equipped with an electric
heating element, MUST be filled with water
before energizing the power to the system.
Failure to do so may damage the electric heating
element. These elements will NOT be replaced
under Thermaco’s Warranty.
Venting the Outlet
An outlet vent or approved vacuum breaker of
at least 1/2 the diameter of the system’s outlet
connection must be present as close as pos-
sible to the Big Dipper outlet to prevent possible
siphonage problems. Failure to provide a vent
for the system voids Thermaco’s Warranty for
the system.
For High Head Height Applications
Over Six (6) Feet (1.95 m)
Big Dipper systems are equipped with an
internal flow regulator located inside the inlet
end of the system. Verify its location and
placement prior to connecting the inlet pip-
ing. If your code requires a vertical type flow
regulator, an approved control with a flow rat-
ing matching the system’s flow rate should be
used. Note: When a Big Dipper is servicing
multiple fixtures, some codes require separate
flow controls for each fixture. See following
page for suggested high head height flow
regulation installation.
Do Not Use With Food Grinders, Potato
Peelers or Waste Disposal Units
If the system is connected to a Waste Disposal
Unit, Garbage Grinder or Potato Peeler, Ther-
maco’s Warranty will be void.
Note: Drawing for reference only.
Equipment must be installed in
compliance with all applicable laws,
regulations and codes, includ-
ing plumbing codes. Installation
should be performed by a qualified
plumber.
Big Dipper
®
IS System Plumbing Installation
