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INSTALLATION - PLUMBING
The 37055 Series Quiet-Flush Toilet Conversion can be
plumbed to any pressurized water system that can provide a
minimum of 3-1/2 GPM (13,5 LPM). This may be a fresh
water system including the vessel's potable water system or a
washdown system utilizing either fresh or salt water. However,
it must be connected to a pressurized system that normally
remains on at all times while the vessel is in use.
Before beginning the conversion, close all seacocks connected
with the toilet's plumbing system and take precaution to ensure
they remain closed until the conversion is complete. If the toilet
being converted is an electric toilet, disconnect the electrical
power to the toilet and take precaution to ensure it is not
restored until the conversion is complete.
Disconnect both inlet and discharge hoses from the old toilet
and remove the toilet from its mounting surface. If the toilet
being converted is an electric model, disconnect the electrical
wiring from the toilet. Remove the hose connected to the back
of the toilet's china bowl and remove the china bowl and seat &
lid assembly from the old toilet base assembly. It is generally
easiest to turn the bowl and seat & lid upside down to attach
the new Toilet Conversion Base to the china bowl. Ensure the
bottom surface of the china bowl is clean and position the
rubber bowl gasket on the base of the china bowl. Orient the
QF waste pump assembly on the china bowl in the desired
position. The waste pump can be oriented in any of the
possible mounting positions that provides the best clearance
from surrounding obstructions but is generally best positioned
so it points to the rear of the toilet bowl. With the heads of the
provided machine screws on the underside of the base and
threads protruding through the flange of the china bowl,
position the plastic washers next to the china to prevent it from
becoming chipped and the stainless steel washers next to the
nuts and secure the base to the bowl.
To make the water connection, shut off the water system
pump and open one of the systems faucets or fixtures to drain
the pressure from the system. Select an appropriate tee type
fitting that can be installed in the existing pressurized water
system and will provide a 1/2" (13 mm) hose barb to feed
water to the toilet. Install the tee fitting at a location on the
pressurized water system that provides convenient connection
to the toilet's solenoid valve/siphon breaker assembly. If the
toilet is being connected to the vessel's fresh water system
and the vessel may be connected to an unregulated city
water supply, it is recommended that a valve be installed in
the toilet water supply line ahead of the solenoid valve/siphon
breaker to regulate the flow rate of incoming pressurized
city water.
The solenoid valve/siphon breaker should be positioned a
minimum of six inches above the hose connection at the back
of the toilet bowl at all angles of heel and trim and located as
close to the toilet as possible. It should be located where an
occasional drop or two of water from the siphon breaker will
not adversely affect nearby equipment or supplies. It must be
installed in a vertical position with the hose barb connections
pointing down. The solenoid valve/siphon breaker bracket
should be secured to a solid mounting surface with four
screws. If the valve assembly is attached to a wood surface,
3/8" (10 mm) long screws are generally adequate to support
the weight of the valve assembly. If desired, the valve
Model 37055 • Forms 43000-0663
assembly may be installed inside a cabinet or locker to
conceal it from view of the vessel's occupants. To provide a
clean sanitary appearance inside the head area, a six foot
section of smooth white hose is provided with the toilet to
connect the toilet bowl spud fitting to the siphon breaker
outlet hose barb.
The solenoid valve inlet hose barb is then connected with
1/2" (13 mm) reinforced vinyl hose suitable for pressurized
water to the tee fitting installed in the water system line. All
pressurized water system connections should be secured
with stainless steel band type hose clamps. The hose
connecting the siphon breaker to the bowl should be secured
with a band clamp at the siphon breaker to prevent it from
being accidentally dislodged but generally does not need a
hose clamp to secure it to the bowl spud fitting unless
desired for added security.
The discharge port includes a 1" (25 mm) hose barb and
should be plumbed with 1" (25 mm) hose to an on board
holding tank or, if appropriate, to an overboard discharge
through hull. A 1" (25 mm) to 1-1/2" (38 mm) barbed hose
adaptor is provided to adapt a 1" (25 mm) discharge hose to
1-1/2" (38 mm) hose, if desired. The discharge plumbing
should be kept as short as possible and bends in the dis-
charge hose should be kept to a minimum. To retain water in
the bowl, the discharge hose should be looped upward about
eight to ten inches above the base of the toilet and as near to
the toilet as can be practically accomplished without creating
an unsightly plumbing situation.
WARNING
Flood hazard. If toilet is installed below the
!
waterline, it must be installed with a properly
positioned vented loop in the discharge hose.
Failure to do so can result in flooding which
can cause loss of property and life.
If the toilet is below the water line and is plumbed to an
overboard discharge through hull, the discharge plumbing
must include a vented loop positioned so it remains above the
water line at all angles of heel and trim. Total discharge head
should not exceed 4 feet (1,2 M).
Waterline
Vented Loop
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