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Installation Instructions for Jabsco Manual Marine Toilet


Applications

You may install JABSCO Regular and Compact bowl manually operated marine toilets in both power and sailing craft, either above or below the waterline, for use on sea, river, lake or canal. Your installation may discharge the waste either overboard (provided that your national and local regulations allow this), or into a treatment system or into an on-board holding tank (U.S.C.G. Marine Sanitation Devices Type I, II and III).



Installation Instructions

YOUR TOILET is just one part of a system. Correct installation of the whole system is essential if you want the toilet to perform properly, operate reliably and safely, and give satisfactory length of life. The toilet is delivered assembled for right-handed operation. If you wish, both Regular and Compact Bowl models may be re-assembled with the pump on the left hand side. The seat and lid is delivered boxed and unfitted for its protection.

NB: Key numbers, e.g. ('Key 31'), are references to the exploded view diagram on the back page.



1. Re-assembly for left hand use

If you wish to change the pump mounting from right to left hand, do so before installing the toilet.
  • Pull off the hose (key 4) that runs from the pump to the bowl.
  • Remove the 4 screws (key 31) that secure the pump assembly to the base.
  • Lift off the pump assembly and leave the base valve gasket (key 16) on its 3 locating pegs.
  • Remove the 4 bolts (key 11) that secure the bowl to the base.
  • Rotate the bowl 180° and re-secure it, using the nylon washers (key 14) to protect the ceramic from the stainless steel washers and nuts (key 13,12).
  • Rotate the pump assembly 180° and re-secure it.
  • Rotate the push-fit intake elbow (key 6) 180° and refit the hose between the pump and the bowl.


  • 2. Location

  • Select a location that will give sufficient clearance all round and above the toilet. Ensure that there is room to operate the pump and that there is access to the drain plug at the end of the base.
  • The mounting surface must be flat, rigid and strong enough to support a man's weight and should be at least 50mm (2") wider and 50mm (2") deeper than the base of the toilet.
  • You will need sufficient clearance below the mounting surface to be able to secure the mounting bolts.
  • The seat and lid should be able to swing up and over at least 110°, so that they will not fall forward when the craft heels or pitches. When they are swung up they must be supported so that the hinges are not strained


  • 3. Mounting

    YOU WILL need:
  • 4 x 8mm (5/16") diameter stainless steel bolts of length to suit the thickness of the mounting surface.
  • 4 stainless steel nuts, preferably self-locking. If you do not use self-locking nuts you will need some nut-locking compound.
  • 8 large stainless steel washers not more than 21mm (13/16") diameter.
  • A small tube of white silicone sealant.
  • Offer up the toilet in the selected position and, using the holes in the base as a guide, mark the positions for the 4 bolt holes on the mounting surface. Remove the toilet and drill 4 vertical holes of 9mm diameter through the mounting surface.
  • Apply a bead of white silicone sealant to the outer rim of the bottom base.
  • Bolt down the toilet and tighten the fastenings securely. If you are not using self-locking nuts, use nut-locking compound.


  • 4. Through Hull Fittings

    YOU WILL need:
  • 19mm (3/4") bore seacock for the flushing water inlet, and, if you are discharging the waste overboard, a 38 mm (11/2") bore seacock for the waste outlet.
  • Follow the seacock manufacturer's own instructions concerning materials and methods of installation.
  • Ensure the inlet seacock is positioned where it will be below the waterline at all times when the craft is underway, and also ensure that any outlet seacock is both aft of, and higher than, the inlet seacock.


  • HAZARD RISK - Through Hull Fittings
    If the installation of the toilet results in it being connected to ANY through-hull fitting that may possibly be below the waterline at ANY time, whether when the craft is at rest, underway and heeling or rolling or pitching, you must install the toilet in accordance with these Installation Instructions. If you do not, water may flood in, causing the craft to sink, which may result in loss of life. FOLLOW THESE INSTRUCTIONS!
    HAZARD RISK - Accidental Damage

    If the toilet is connected to ANY through-hull fittings and if the toilet or pipework is damaged, water may flood in causing the craft to sink, which may result in loss of life.

    Therefore, if you are making connections between the toilet and ANY through-hull fittings that may possibly be below the waterline at ANY time, full bore seacocks MUST be fitted to those hull fittings, to allow them to be shut off.

    The seacocks MUST also be positioned where they are easily accessible to all users of the toilet. If, for any reason, it is not possible to do this, then secondary full bore marine quality valves MUST be fitted to the hoses where they are easily accessible.

    USE SEACOCKS!

    CAUTION: Use lever operated, full bore marine seacocks and valves. The use of screw-down gate valves is not recommended.


    5. 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, according to whether the toilet is above or below the waterline, and to whether it discharges the waste overboard or into an on-board holding tank.

    HAZARD RISK - Pipework Becomes Loose
    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 may 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 clips. USE HOSE CLIPS!


    5.1 Pipework - General instructions for all options

    YOU WILL need:
  • Spiral reinforced smooth bore flexible hoses for both the 19mm (3/4") id inlet and the 38mm (11/2") id outlet pipework
  • Two stainless steel worm-drive hose clips for every hose tail connection (4, 6 or 8).

  • 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.
  • Avoid sharp bends in the hoses that may cause them to become kinked. Keep all pipework lengths as short as possible, whilst complying with these instructions. Unnecessary inlet or outlet hose length just makes the toilet harder to pump.
  • 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 of it in hot water.


  • CAUTION: Do not apply flame to the hose. Do not apply flame or any heat to the plastic hose tails on the toilet. Do not use oils, greases or synthetic lubricants. Do not apply sealing compounds to any hose connections. Do not over tighten hose clips. Any of these actions may result in cracking or breakage of the plastic parts of the toilet.
  • Secure the ends of all hoses to the hose tails with two stainless steel worm-drive hose clips, ensuring that all inlet connections are airtight and that all outlet connections are watertight.
  • The Discharge Elbow (key 34) may be rotated 360° to suit your installation. Always slacken the 2 securing screws, adjust the discharge elbow to the required position and re-tighten the 2 securing screws before you connect the hose to it.
  • CAUTION: Failure to follow this procedure may result in leaks between the discharge elbow and the pump cylinder.

    5.2 Inlet Pipework - 2 options

    Option 1: Toilet below the waterline

    YOU MUST fit a 19mm (3/4") Vented Loop fitting, Jabsco part number 29015-0000.

  • Run the inlet hose by the most direct route from the inlet seacock to the flushing pump inlet tail.
  • Remove the white hose supplied with the toilet, which connects the flushing pump outlet tail to the elbow (key 6).
  • Rotate the intake seal (key 5) so that the elbow points upwards.
  • Replace the white hose with a longer length of 19mm (3/4") id hose and arrange it to form an anti-syphon loop whose highest point is at least 20cm (8") above the highest possible waterline, and fit the Vented Loop at the highest point.
  • Secure the ends of all hoses with two stainless steel worm-drive hose clips.


  • HAZARD RISK - Bowl Rim Below Waterline

    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 20cm (8") 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 any pipework connected to a through-hull fitting, irrespective of whether inlet or outlet.

    USE VENTED LOOPS!

    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.

    Although moving the Flush Control Lever (key 23) to the "Shut" position will restrict the flow, this lever CANNOT be relied upon as a shut-off valve.

    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.

    Option 2: Toilet always above the heeled waterline

    YOU MAY need A 19mm (3/4") non-return valve, Jabsco part number 29295-1011 Run the inlet hose by the most direct route from the inlet seacock to the flushing pump inlet tail.

    For maximum convenience of use, install a 19mm (3/4") in-line non-return valve next to the inlet seacock, which will ensure that the pump remains primed in between usages.

    5.3 Outlet Pipework - 4 options

    Option 1: Toilet below the waterline and discharging overboard.

    (See Figure 1 on Page 3) YOU MUST fit a 38mm (11/2") Vented Loop fitting, Jabsco part number 29015-0010. Arrange the outlet hose to form a loop which is at least 20cm (8") above the highest possible waterline, and fit the vented loop at the highest point.

    Option 2: Toilet above the waterline, and discharging overboard.

    (See Figure 2 on Page 3) YOU MAY fit a 38mm (11/2") Vented Loop fitting, Jabsco part number 29015-0010. Run the outlet hose up from the discharge elbow to form a loop at least 30cm (12") higher than the discharge elbow. If you fit a vented loop at the top of the hose loop this will ensure that you can keep some water in the base of the toilet without risk of it being siphoned away.

    Option 3: Toilet waste discharging into holding tank, top of holding tank above discharge elbow at anytime.

    (See Figure 3 below) YOU MUST fit a 38mm (11/2") Vented loop fitting, Jabsco part number 29015-0010. If there is ANY possibility that the discharge elbow may be below the top of the tank at ANY time, a ventilated anti-syphon loop must be fitted in the outlet pipework to ensure that the contents of the tank do not syphon out through the bowl. Arrange the outlet hose to form a loop which is at least 20 cm (8") above the highest possible level that the tank may reach, and fit the Vented Loop at that highest point.

    Option 4: Toilet waste discharging into holding tank, discharge elbow always above top of holding tank.

    (See Figure 3 below)

    Run the outlet hose up from the discharge elbow to form a loop at least 30cm (12") higher than the discharge elbow. This will create a water seal at the Joker Valve that will prevent bad odors from escaping through the toilet. YOU MAY fit a 38mm (11/2") Vented Loop fitting, Jabsco part number 29015-0010. If you fit a vented loop at the top of the hose loop this will ensure that you can keep some water in the base of the toilet without risk of it being siphoned away.

    6. Testing

    Refer to the Operating Instructions and follow the procedure "2 Normal use". If the flushing pump is hard to prime half fill the bowl with fresh water.

    7. Safety

    Ensure that this INSTRUCTION MANUAL reaches the owner, skipper or operator of the craft as it contains essential safety information.
    ON COMPLETION OF INSTALLATION:
    - SHUT THE FLUSH CONTROL
    - CLOSE BOTH SEACOCKS



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