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Alternative 2
Toilet above the waterline
You may use a 19 mm. (3/4") non-return valve
•
Run the inlet hose by the most direct route from the inlet seacock
to the flushing pump inlet tail
•
For your maximum convenience of use, install an in-line non-
return valve next to the inlet seacock which will ensure that the
pump stays primed in between usages.
•
The toilet flushing pump will self-prime up to 1m (3') above the
outside water level. If there is any possibility that the toilet flushing
pump inlet may be more that 1m (3') above the actual waterline
when the craft is underway, a non-return valve is to be installed
next to the seacock to maintain the pump in a primed condition
Pipework – Outlet
Alternative 1
Toilet below the waterline and discharging over-
board
Fig. 1
Toilet below the waterline
You must use a 38mm (1 1/2") Vented Loop fitting.
•
Arrange the outlet hose, so that its highest point is at least 20 cm
(8") above the waterline, and fit the Vented Loop at the highest
point.
Alternative 2
Toilet above the waterline and discharging over-
board
Fig. 2
Toilet above the waterline
You may use a 38mm (1 1/2") Vented Loop fitting.
•
Run the outlet hose up from the discharge elbow, at least 30 cm
(12') above the discharge elbow then fit a Vented Loop on top of
the hose, ensuring in this way to keep some water in the base of
the toilet without risk of it being siphoned away
Original instructions
Alternative 3
Toilet waste discharging into holding tank, dis-
charge elbow below top of holding tank at any
time
You must use a 38 mm (1 1/2") Vented Loop fitting
•
If the discharge elbow is placed less than 20 cm (8") below the
top of the holding tank when the craft is at rest, or if there is any
possibility that the discharge elbow may be below the top of the
tank at any time, a vented loop must be fitted in the outlet pipe-
work
•
Place the outlet hose point at least 20cm (8") above the highest
level that the top of the tank may reach and install the Vented Loop
fitting on this highest point
Alternative 4
Toilet waste discharging into holding tank, dis-
charge elbow always above top of the holding
tank
You may use a 38mm (1 1/2") Vented Loop fitting
•
Run the inlet hose upwards from the discharge elbow, to form a
loop at least 30 cm (12") higher than the discharge elbow.
•
By fitting a Vented Loop on top of the hose loop, you will ensure
to keep some water in the base of the toilet without risk of it being
siphoned away.
Testing
Refer to the operating instructions and follow the procedures for normal
use.
In case the flushing pump is hard to prime, half-fill the bowl with fresh water
10
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