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CAUTION: Use lever operated, full bore marine
seacocks and valves. The use of screw-down gate
valves is not recommended.
Pipework - selection of correct method
YOU MUST select the correct method for the inlet pipework
from 2 options and for the outlet pipework from 4 options, ac-
cording to whether the toilet is above or below the waterline,
and to whether it discharges the waste overboard or into an
onboard holding tank.
HAZARD RISK: Flooding.
USE VENTED LOOPS!
If the toilet is connected to ANY through-hull fittings, and if the rim
of the bowl falls below the waterline, water may flood in causing
the craft to sink, which may result in loss of life.
Therefore, if the rim of the toilet is less than 8" (20cm) above the
waterline when the craft is at rest, or if there is ANY possibility that
the rim of the bowl may be below the waterline at ANY time, a
ventilated anti-syphon loop MUST be fitted in the pipework. Please
remove the small white, 90 degree hose from the back of the toi-
let. Install the vented loop 8" (20cm) above the heeled water line.
Connect new lines from the vented loop to the back of the toilet.
Install the vented loop.
SPECIAL NOTE 1: The smaller bore inlet pipework is more
hazardous than the larger outlet pipework. Unless there is a
ventilated anti-syphon loop in the inlet pipework, water will flow
into the bowl whenever both the inlet seacock is open and the rim
of the bowl is below the actual waterline.
SPECIAL NOTE 2: Making a loop in the hose without fitting a
vent may be just as hazardous as no loop at all, because water may
syphon over a loop. It is the vent that actually prevents the syphon.
HAZARD RISK: Pipework becomes
loose. USE HOSE CLAMPS!
If the toilet is connected to ANY through-hull fittings and if the
pipework becomes disconnected, either from a through-hull fitting
or seacock, or from the toilet or any secondary valve, water may flood
in and cause the craft to sink, which may result in loss of life.
Therefore the ends of ALL flexible hoses fitted directly or indirectly
between the toilet and ANY through-hull fitting that may possibly
be below the waterline at ANY time, MUST be secured to the hose
tails to which they are connected, using two stainless steel worm-
drive hose clamps.
Pipework - General instructions for all options
YOU WILL need:
• Two stainless steel worm-drive hose clamps for every hose tail
connection.
• Please ensure the pump guard strainer is fitted to protect the
Rinse Pump. The strainer should be fitted in an accessible
position for servicing/cleaning.
• Secure the hose runs so that the hoses cannot move and
chafe, and so that they do not exert any leverage on the hose
tail fittings to which they are connected, as this may cause
adjacent joints to leak.
• Spiral reinforced smooth bore flexible hoses for both the 3/4"
(19mm) inlet and 1-1/2" (38mm) outlet marine sanitation
hose for the outlet pipework.
• Avoid sharp bends in the hoses as this may cause them to
become kinked
• Keep all pipework runs as straight and as short as possible,
avoiding rising and falling over obstructions which creates
airlocks.
• If it is difficult to fit the hose onto the hose tails of the toilet or
seacocks, lubricate it with water, or soften the hose by dipping
the end in hot water.
• Secure the ends of all hoses to the hose tails with two
stainless steel worm-drive hose clamps, ensuring that all inlet
connections are airtight, and that all the outlet connections
are water tight.
CAUTION: Do not apply flame to the hose.
Do not apply flame or heat to the plastic hose
tails on the toilet, rinse pump. Do not use oils,
greases or synthetic lubricants. Do not apply sealing
compounds to any hose connections. Do not over
tighten hose clamps. Any of these actions may result
in cracking or breakage of the plastic parts.
Raw Water Rinse Pipework - Two Options
Option 1: Toilet below the heeled waterline
YOU MUST fit a 3/4" (19mm) Vented Loop fitting, Jabsco part
number 29015-0000.
• Run 3/4" (19mm) hose by the most direct route from the inlet
seacock to the inlet of the Pumpgard (key 34).
CAUTION: Do not position the vented anti-syphon
loop between the inlet seacock and the rinse
pump, because it may prevent the rinse pump from
priming.
• Arrange a length of 3/4" (19mm) hose between the Pump
outlet and the Rinse Intake Elbow (key 3), to form an anti-sy-
phon loop whose highest point is at least 20cm (8") above
the highest possible waterline, and fit the ¾" (19mm) Vented
Loop at the highest point.
Option 2: Toilet always above the heeled waterline
• Run 3/4" (19mm) hose by the most direct route from the inlet
seacock to the inlet of the Pumpgard (key 34).
• Run 3/4" (19mm) hose by the most direct route from the outlet
of the Pumpgard to the Rinse Intake Elbow.
Discharge Pipework - Four Options
Option 1: Toilet below the waterline and dis-
charging overboard.
YOU MUST fit a 1-1/2" (38mm) Vented Loop fitting, Jabsco part
number 29015-0010.
• Run 1-1/2" (38mm) outlet hose from the non-return valve
(key 20) to form a loop which is at least 8" (20cm) above the
highest possible water line, and fit the 1-1/2" (38mm) Vented
Loop at the highest point.
Option 2: Toilet always above the heeled water-
line and discharging overboard.
• Run 1-1/2" (38mm) outlet hose from the non-return valve
down to the outlet seacock by the most direct route.
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