SeaLand 9400 Series RushFlush Installation - Manual (Page 8)

8
Installation SeaLand 9300-9400 Series RushFlush Toilets
Discharge Plumbing
1 . 1/8 in . per foot minimum downhill slope in discharge line is required, keeping all lines as short
and straight as possible .
2 . 1-1/2 in . ID pipe or 1-7/8 in . ID hose may be used
• If using 1-1/2 in . pipe:
- Use DWV (drain, waste & vent) pipe fittings that incorporate sweeping changes of direction .
- Do not use schedule 40 or 80 fittings that have tight turns . They will hinder flow of
wastewater to holding tank .
- Install unions as deemed necessary for service .
• If using 1-7/8 in . hose:
- Eliminate hose sags and low spots that may hinder flow of wastewater to holding tank .
3 . Check valve (flapper style) supplied with every toilet:
• Install this valve as close to toilet as possible, on the discharge
side of the toilet plumbing before the waste line joins with any
common discharge line .
• The valve must be installed with the flapper oriented correctly .
- When open, the flapper “hinge” must be at the highest pos-
sible location .
- Flapper must open in line with the direction of flow .
- Use caution when gluing valve into place . Make sure excess glue does not contact flapper .
4 . For flushing overboard through seacock:
• Loop inside toilet must be above waterline .
• Seacock must be 1-1/2 in . full-flow, located no lower than 12 in . below water line .
5.2 Toilet with through-the-floor connections
Note
If replacing an existing center-discharge toilet, make sure the center of the existing
discharge flange is at least 10-1/2 in . (267 mm) from the back wall, then proceed to
Step 5 for proper positioning of water line and electrical wiring access holes .
1 . Carefully unpack toilet bowl and floor flange adapter .
2 . Position ceramic bowl in the space intended . Confirm that adequate clearance is available for
opening the seat and lid, and, for model 9310, using the flush handle on the left side of toilet .
3 . Mark the floor at the rear corners of the toilet bowl . Measure the distance between the two
marks and divide in half to find the toilet centerline . Mark the floor at the rear wall for the primary
centerline ( 5 ) .
4 . Draw a primary centerline on the floor at least 14 in . (356 mm)
long . Mark the center of the floor flange access hole at
10-1/2 in . (267 mm) from the wall (
6 ) .
5 . For the upper rim water supply line and electrical wires access
hole, mark another center spot 6 in . (152 mm) from the back
wall (
7 ) .
6 . At the wall, mark a secondary centerline 3 .25 in . (83 mm) to
the left of the primary centerline, and draw the secondary line
about 4 in . (102 mm) long from the wall . Mark the center for
the lower bowl water supply line access hole 2 in . (51 mm)
from the wall (
8 ) .
5
6
7
8
2 in.
6 in.
3.25 in.
Check valve
Actual model may vary from image being shown.