JABSCO 37275 Series Manual Download

Page: 2 / 8

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 the bowl so the seat and
lid  assembly  can  rotate  to  its  fully  open  position  and
remain  open  on  its  own.  Once  the  exact  position  has
been  determined,  mark  the  location  of  the  two  toilet
mounting  holes  on  the  toilet  mounting  surface  and
move  the  toilet  temporarily  out  of  the  way.  When
securing the toilet to a plywood underlayment below a
layer of fiberglass, to avoid cracking the fiberglass, drill
a 5/16

(8 mm) hole through just the fiberglass layer to

provide clearance for the screw threads and shank. Drill
a 3/16

(5 mm) pilot hole to accept the threaded portion

of the toilet hold down screw set provided. It is generally
best to wait until the toilet is ready to be installed for the
final time before screwing the hold down screws into the
mounting surface.
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 grommets 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
fitting 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 water-line) 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.  Connect  the  hose  from  the  discharge
port of the strainer to the PAR-MAX pump’s inlet port.
Connect  another  length  of  hose  from  the  pump’s
discharge port to the area at the back of the Designer
Styled Toilet with adequate length to connect with the
3/4

(19 mm) hose barb at the back of the china bowl.

DANGER

cAUTION

WARNING

WARNING

Flood hazard. If toilet is installed below the waterline

or may be below the waterline at any angle of heel or

trim, it must be intalled with properly positioned

vented loops. Failure to do so can result in flooding

which can cause loss of property and life.

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.  Providing  adequate  length  of  hose  to
include such a loop also will provide the ability to move the
toilet out away from the bulkhead it butts against to complete
the hose connections. 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.