27-05-19 UNI-SAN Domestic Instructions Page 15
Figure 7 c :
OTHER REQUIREMENTS :
The same requirements as for
Figure 7 a
and
-
"1"
if shower and/or bath and/or floor waste gully is connected, use a valve socket (instead of the Bottom Inlet
Valve).
A waste trap must be installed to separate unpleasant smells from the unit.
Note the layout requirements for the floor waste gully or shower tray trap water level at a minimum of 350mm
above the base of the collection tank and
-
"2"
the connection point of the valve socket should be in the top half of the wall of tank or on the top around
the inspection lid.
-
"3"
provide for easy access to the inspection lid ( we recommend a gap of 100 mm minimum above the top of
the tank )
- installation of a union/coupling connector on the delivery line just after the pump is a must for easy future
removal of the pump/motor for servicing.
- and the Wallace non-return non-clog full flow ball valve must be installed in a vertical position in the delivery
line within a metre of the pump.
-
"4"
an
OVERFLOW PIPE should be installed :
to maintain the maximum 900mm height measured from the
base of the tank to the lowest overflow point of all the fixtures or appliances discharging into the UNI-SAN. The
maximum recommended height protects the unit against overpressurisation. To avoid any damage to property
caused by an accidental overflow or a malfunction of the pump, the overflow should be delivered to a suitable
and visible location outside. This lowest point may be a shower tray or a floor waste gully trap. In which case,
we recommend an overflow pipe below the floor and can be simply achieved by installing a suitable diameter
88 degree pipe junction (DN 50 mm or bigger) above the waste trap of the fixture. The overflow pipe should
after a short rise fall away and the delivery line should be kept straight or use long radius type bends. Keep the
line unobstructed.
If no overflow pipe is connected, review the options described in section 10.4 .
