SFA SANI 3, Manual

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6
AdVIcE
PIPE SUPPORTS
All sanitary pipe work must be
supported, in accordance with the pipe
manufacturer’s recommendations.
Avoid dipping or trapping, which may
cause the build up of residual “solids”
and sub- sequent blockage.
BENDS
Where possible long sweeping bends
should be used. Do not use short
elbows. If 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, prior to a vertical lift
should not exceed 12-18 inches.
EASY ACCESS
The unit should be accessible and
removable in the event of maintenance
being required. During the installation
a full-port ball valve should be installed
at the base of any vertical discharge
pipe work from the unit to allow easy
service of the unit.
GRAVITY FALL
The unit accepts wastewater by
gravity; it does not “vacuum” in water.
All inlet pipe work must have a positive
gravity fall, (
1
/
4
" per foot). All horizontal
piping from the macerating unit must
also have a positive gravity fall to allow
free drainage when the pump stops.
NO DIRECT FALL
Where the point of discharge into the
soil stack is significantly lower than the
base of the unit, a vacuum relief valve
may need to be fitted at the highest
point in the pipe run in order to avoid
siphonage of the water seal.
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.
SOIL STACk CONNECTION
All discharge pipe work must be
connected to the soil stack by an
appropriate and approved connection.
A “tee” or ”y” fitting as shown is
preferable.
NO DIAGONAL “UPHILL” PIPE
RUNS
All discharge pipe work from the
unit should run either directly vertical
upwards from it or in a horizontal plane
(with a small gravity flow) to the point of
discharge. Pipe work should not be
installed with diagonal upward slope
from the unit to the point of discharge.
PIPE WORk
All pipe work should be either copper,
PVC or CPVC (Do not use flexible
pipes). Hangers should not be less
than three feet apart to prevent pipe
rattling.
DISCHARGE
Never discharge directly into an open
drain, fixture, manhole or rainwater
drainpipe. It is illegal for it constitutes a
health hazard. Direct connections into
sanitary waste systems only, shall be
acceptable.
FREEZING
Ensure all pipe work susceptible to
freezing is adequately insulated or
heated. In unheated buildings, the
toilet, piping and macerating unit must
be properly winterized with “RV or
plumbers” anti-freeze or drained
completely.
ELECTRICITY
Before attempting any maintenance or
servicing, the unit must be disconnec-
ted from the power source. The mace-
rating system must be connected to a
Ground Fault Circuit Interrupter (GFCI).
9954 N°225 SANI3 082011-exe.indd 7 22/09/11 16:09