INSTALLATION
The 37245-Series Quiet Flush Toilet is complete with a
dedicated PAR-MAX 4 pump to provide either sea or lake
water to rinse the toilet bowl when flushing the toilet. This
pump is intended to be located remotely from the toilet but
will function best if the distance from the toilet is kept to a
minimum. Because it is self-priming, it may be located
above the vessel’s waterline. It must be installed with the
Pumpgard strainer (provided with the toilet) located some-
where in the inlet plumbing to the pump. The toilet also
includes a multi-function flush control which should be
installed in a bulkhead location that is convenient to the toi-
let and allows access for wiring to run from the power
source and to both the toilet discharge pump and the
PAR-MAX rinse water pump.
Install the toilet seat and lid assembly on the china bowl
with the fasteners provided and position the toilet in its
desired location. When locating the toilet, ensure there is
adequate clearance above and to the rear of the bowl so
the seat and lid assembly can rotate slightly past vertical
so it will remain up when lifted. It is all right to rotate the
waste pump assembly under the china bowl to provide
clearance from possible obstructions, if desired. This can
be accomplished by removing the four white plastic hex
head caps from the nuts at the base of the china bowl and
removing the four machine screws and nuts that secure
the china bowl to the base. The base can then be
reattached to the bowl at any position in 90º increments.
Once the exact position for the toilet has been determined,
mark the location of the four base attachment holes on the
toilet mounting surface. Determine the best toilet attach-
ment method using 5/16
" (8 mm) fasteners (either ma-
chine screws for through bolting or lag screws for topside
attachment) and drill the appropriate size holes for the fas-
teners being used. If securing the toilet with lag screws into
a plywood underlayment below fiberglass, be sure to drill a
hole through just the fiberglass layer large enough to allow
clearance for the screw threads and shank to avoid
cracking the fiberglass.
The PAR-MAX pump should be mounted to a solid mounting
surface. It should be secured with four fasteners through
the rubber grommets that snap into the pump’s base. Do
not over-tighten the mounting screws and crush the grom-
mets such that they will not absorb vibration. The pump
may be mounted in any position; however, if mounting it to a
vertical surface it should be oriented so water dripping from
a loose port connection will not drip down on the motor.
Plumbing runs should be kept as short and straight as
possible. All plumbing should be completed with quality
3/4
" (19 mm) hose that will not collapse or kink. Route the
inlet hose from a 3/4
" (19 mm) through hull and seacock fit-
ting located well below the waterline (and well forward of
any discharge through hulls, if installed) to the pump inlet
port. Ensure the inlet hose passes through an accessible
location (preferably above the vessel’s waterline) that will
allow for the installation of the Toilet Pumpgard strainer
where it can be periodically inspected and cleaned of
debris. The Pumpgard strainer should be secured with two
fasteners to a solid mounting surface with the flow arrow
pointing towards the pump. The inlet hose should be cut and
each end attached to the strainer’s ports. The hose from
the strainer’s discharge port must connect with the PAR-MAX
pump’s inlet port. Provided with the toilet is a six foot length
of smooth white aesthetically pleasing hose to connect to
the back of the toilet bowl and be routed out of the head
area. Ideally, the PAR-MAX pump should be located so this
length of hose can be connected directly to the pump’s
discharge port avoiding an additional splice to the hose lead-
ing from the pump to the back of the toilet bowl. If this is not
practical, acquire a 3/4
" (19 mm) barb to barb hose mender
and splice the white hose to the supply hose from the dis-
charge port of the pump.
If the toilet is installed below the vessel’s waterline, in order
to prevent a siphon action from filling the toilet, a properly
positioned vented loop fitting must be installed between
the PAR-MAX pump and the back of the toilet bowl. The
vented loop fitting must be secured in a location that
remains at least 6-8 inches (15-20 cm) above the waterline
at all angles of heel and trim (see diagram).
The toilet discharge port is sized for 1
" (25 mm) hose. The
discharge hose should be a quality grade reinforced hose
suitable for waste applications. Route the discharge hose
to the holding tank in the most direct way with as few
bends as possible. To retain some water in the bowl, it is
best to loop the discharge hose up about 8-10 inches
(15-20 cm) as close to the toilet as practical then on to the
holding tank. It is best to avoid any dips or low spots in the
discharge plumbing that can act as water traps and collect
waste. If this occurs, waste can solidify and cause a
discharge blockage.
If the toilet is plumbed to an overboard discharge, and is
below the vessel’s waterline, the discharge plumbing must
include a properly positioned vented loop. The vented loop
fitting must be secured in a location that remains at least
6-8 inches (15-20 cm) above the waterline at all angles of
heel and trim. The maximum discharge head without a
notable decrease in pump performance is four feet (1.3 M).
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.
WARNING
!
Waterline
Vented Loop
Heeled Waterline
2
