ADVICE
PIPE SUPPORTS
All sanitary pipework must be
supported, in accordance with the pipe
manufacturer’s recommendations to
avoid dipping or trapping, which may
cause the build up of residual «solids»
and subsequent blockage.
BENDS
Where possible pattern bends should
be used instead of elbows. If long
sweeping 90° elbows are not available,
use two 45° elbows to make a 90° turn.
VERTICAL INSTALLATION FIRST
If vertical lift is required, this must
precede the horizontal pipe run.
DIRECTLY VERTICAL
All vertical lifts should rise as directly
above the unit as possible, allowing only
for the need to clear the toilet tank. Any
initial horizontal pipe run from the unit,
placed prior to a vertical lift, should not
exceed 18”.
EASY ACCESS
The unit should be accessible and
removable in the event of maintenance
being required. During the installation a
full-port gate or ball valve should be
installed at the base of any vertical
discharge pipe to allow easy service of
the unit.
GRAVITY FALL
The unit accepts wastewater by gravity;
it does not pump in water. All pipework
must have a positive gravity fall, (
1
/
4
"
per foot). All horizontal discharge piping
from the macerating unit must also have
a positive gravity fall to allow free
drainage when the pump stops.
THREE FEET MINIMUM
The macerating unit must be installed at
least 3 feet from the soil stack. This will
allow the macerator to operate for an
adequate period of time to ensure
efficient waste reduction.
6
SOIL STACK CONNECTION
All discharge pipework must be
connected to the soil stack by an
appropriate and approved connection.
Y pattern fitting as shown is preferable.
NO DIAGONAL “UPHILL” PIPE RUNS
All discharge pipework from the unit
should either run directly upwards from
it or in a horizontal plane (with a small
gravity flow) to the point of discharge.
Pipework should not be installed with
diagonal upward slope from the unit to
the point of discharge.
PIPE WORK
All pipework should be either copper or
solvent weld plastic. Do not use flexible
pipes. Hangers should not be less than
four feet apart to prevent pipe rattling.
FLUSHING
The macerating system requires a
minimum of 6 litres of water to operate
satisfactorily.
DISCHARGE
Never discharge directly into an open
sewer, manhole or rainwater drainpipe.
It is illegal as it constitutes a health
hazard. Only direct connections into
sanitary waste systems are acceptable.
FREEZING
Ensure all pipework susceptible to
freezing is adequately insulated or
heated. In unheated buildings, the toilet,
piping and macerating unit must be
properly winterized with «recreation
vehicle» anti-freeze or drained
completely.
ELECTRICITY
Before attempting any maintenance or
servicing, the unit must be disconnected
from the power source. The macerating
system must be connected to a Ground
Fault Circuit Interrupter.
6438 NOTICE 222 15/11/06 11:07 Page 6
