SeaLand Do Not Flush Panel - Manual (Page 6)

6
6 Installation
Caution!
Do not install DNF panel in area with potentially flammable or explosive vapors.
1. Select panel location away from direct contact with water and oil.
2. Confirm clearance for wire connections behind wall, hull liner or bulkhead.
3. Using DNF panel template (fig.
6 , p. 9), cut out panel access hole and drill fastener holes.
4. Remove panel cover (fig. 1 1, p. 2) from mounting frame (2), if necessary, by carefully pulling them
apart. Install mounting frame to wall with four fasteners (3).
5. With electrical power off, route proper wiring to DNF panel location, making sure wires extend out
through access hole (fig. 1 4, p. 2). Refer to wiring diagrams (fig. 3 , p. 2, figs. 4 and 5 , p. 3)
for appropriate toilet system. Make final wiring connections.
6. Push panel cover onto mounting frame until it locks.
7. Turn on electrical power to DNF panel and toilet system. Confirm normal operation of status light.
7 Operation
7.1 Vacuum status monitor (in VacuFlush system)
When electrical power to toilet system is turned ON and the DNF panel red light glows, this indicates
that there is NOT sufficient vacuum in the system to flush the toilet. Do not flush toilet, or blockage
may occur.
Notes
When connected to a VacuFlush toilet system and red light constantly cycles on and off
between flushes, there is a possible vacuum leak in the system. (An idle VacuFlush system
should not cycle more frequently than once every three hours.)
If red light is OFF but there is no vacuum in system, a blockage has likely occurred
between the toilet and vacuum tank. Open flush ball in toilet bowl and use standard toilet
plunger to unblock.
After a period of time, if red light seems to remain lit longer than when toilet system was
new, duckbill valves in vacuum pump may require replacement.
Caution!
If DNF is connected to a “full” tank level sensor or shut-down relay and holding tank is
empty, a continuous red light may indicate extensive vacuum loss due to blockage, pump
failure or leak. Turn off vacuum system and repair as soon as possible.
7.2 “Full” tank monitor (in VacuFlush system)
When electrical power to toilet system is turned ON, the red light glows, and the vacuum pump is not
running, this indicates that the holding tank is full and needs to be pumped out. Do not flush toilet, or
blockage may occur.
7.3 “Full” tank monitor (in other marine toilet system)
When electrical power to toilet system is turned ON and the red light glows, this indicates that the
holding tank is full and needs to be pumped out. Do not flush toilet, or holding tank may overfill and
damage toilet system components or boat.
DNF Panel Template
Dimensions
(fig. 6 , page x)
Ref. Dimension
A 83 mm / 3.25 in.
B 83 mm / 3.25 in.
C 67 mm / 2.63 in.
D 67 mm / 2.63 in.
E 55 mm / 2.16 in.
F 68 mm / 2.69 in.
G 2 mm / 0.10 in. dia.
H Access hole.
Allow 51 mm / 2 in.
clearance behind
wall.
Installation SeaLand DNF Status Panel