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Symptom Cause Remedial Action
Prevention
Urine Odor
in
Washroom
Horizontal runs or
downward slopes on
pipe are causing
condensate to block
pipe.
Fan has failed
(Electric or AC/DC)
12 volt Fan has
failed, or is not run-
ning (AC/DC & NE)
Device other than
Sun-Mar diffusor is
installed on top of
the vent stack
Room where unit is
located is airtight.
Vent stack has too
many bends and/or
horizontal lengths.
Re-install the vent so there are no longer any low
points where condensate can collect. If re-instal-
lation is not possible, drill a small hole in the bot-
tom of the low point (preferable outdoors) to
allow condensate to drain. (Note: watch for icing
in winter at this hole.)
Have your serial number ready and call Sun-Mar
for a replacement. Instructions are included with
the replacement fan.
Remove and replace fan. Fan should be on when
installed. When it is turned off it forms an
obstruction.
Wind turbines or vent caps may be discouraging
air movement. If so, replace with a Sun-Mar dif-
fusor.
1. Hold a lighter up to the air intake holes on the
back of the unit. Air should be drawn into the
holes. If air is not easily pulled in, check venting
for too many bends or horizontal lengths and/or
provide more ventilation to the room.
2. Install fresh air intakes on any competing
appliances.
1. Re-install the vent stack to reduce the number
of bends/eliminate horizontal lengths.
2. If the vent stack cannot be further straight-
ened, remove the fan assembly and reduce the
amount of recirculating air by covering up the
area between the fan exhaust and the 90 degree
vent intake elbow with duct tape or similar.
Install wall brackets on vent pipe to
prevent settling. DO NOT install
horizontal runs as liquid will collect
and block ventilation, causing odor.
The fan is a constantly moving part
and has a finite service life.
The fan is a constantly moving part
and has a finite service life.
Wind turbines or vent caps
should not be installed on or,
instead of a Sun-Mar diffusor.
Install your Centrex 3000 in an
area with plenty of ventilation and
watch for competing appliances
such as bathroom fans and wood
stoves.
Install the 2” (50mm) vent with
minimal bends (total bends should
equal no more than 360 degrees)
and NO horizontal or downward
slopes.
4” (100mm)Venting should be
installed completely vertical, if
bends are necessary, use 45
degree elbows, (max. 2) and install
fan.
Installation
Considerat-
ions for the
waste pipe
The 3”
(75mm)
Waste
Inlet
The
Compost
Collection
Chamber
Drain
Installation
When installing the waste piping from the toilet to the composting unit, the following considerations should
be born in mind:-
i) The piping should be either 45 degrees or more to the vertical (if composting unit is directly below
toilet), or at a 2-3 degree angle (1/8”-1/4” or 4-8mm drop per foot maximum) so that the waste
travels with the liquid. Piping should not be installed at between 4 and 45 degrees if the composting
unit is a distance from the toilet.
ii) Piping should not slope upwards at any point.
iii) Connections should be snug so that waste is not encouraged to “hang up” where pipe meets
connector.
iv) It is recommended that the waste pipe not be longer than 15 feet(4.5m) without installing a clear out
port (a Y fitting with screw on end cap) near the toilet to provide easy access should it ever be
required.
v) Use a soft sealant, such as silicone for the connection of the waste piping to the composting unit so
that the composting unit can be moved for servicing or other reasons should this ever be required.
vi) Insulate piping if unit is to be used during the winter.
For heavy winter use, the composting unit will need to be kept warm by enclosing it, insulating the
enclosure, and providing some heat source. The enclosure must not be airtight since the unit
must be able to draw air in.
The 3” (75mm) waste inlet (supplied with kit) should be installed where the waste pipe feeds into the com-
posting unit. This assembly will allow the waste to flow into the Bio-Drum without interfering with the
drums’ function. If more room is needed in your installation, you can substitute this assembly by con-
structing your own 3” (75mm) waste assembly from the examples shown below.
Line the base of the compost finishing chamber with a large garbage bag. Place the base of thecompost
finishing chamber against the right side of the unit, directly below the drum output, so that compost will
drop into the compost finishing chamber automatically. The top of the compost finishing chamber should
be placed on the bottom half so that it covers the drum output (the end of the drum where the compost
will come out).
The 1” (25mm) Safety drains at the left of the “Centrex 3000”, exit to both the front and back. To con-
nect one of the drains, (whichever is convenient), remove the orange plug, attach the 1”(25mm) hose
(included) and secure with a hose clamp. Ensure there are no kinks or upward bends in the drain hose.
Chapter 5
MECHANICAL TROUBLE SHOOTING
Most problems are prevented through proper maintenance and the use of proper bulking materials in the toilet. If
you do have a problem which may be a mechanical or installation problem, this Trouble Shooting section will help you
solve it. If you still have further questions, contact technical service at Sun-Mar for advice at 1-888-341-0782
