Sun-Mar CENTREX 2000 series User manual

PO-MANU0-0609XX
February 2009
Rev D6 Serial
# ________________
CENTREX 2000 FAMILY
OWNER’S MANUAL
Product Info: [phone] Fax: [phone] Tech. Service: [phone]
E-mail: [e-mail] http://www.sun-mar.com
600 Main St. 5370 South Service Rd.
Tonawanda, N.Y. Burlington, ON
14150-0888 U.S.A. L7L 5L1 CANADA
RATED CAPACITY
Weekend & Vacation Use
(Cottage Use)
NE Units; 6 Adults
Electric Units; 7 Adults
Residential & Continuous Use
NE units: 3 Adults
Electric Units; 4 Adults
Standard 41
Certified for liquid
containment, odors, and solid
end products in cottagel use
Certified to NSF/ANSI Standard 41
CENTREX 2000 CENTREX 2000 AC/DC
CENTREX 2000 NE

Electrical
Specifications
Centrex
2000 2000NE 2000AC/DC
Maximum Amps 3.6 NA 3.6/NA
Fan Watts
35 req. 1.4 opt. 35 req./
(Required or Optional 2.4 opt.
Hook-up)
Heater Watts 370 NA 370
(When on)
Average Power Use
200 NA 200
In Watts (Heater on
1/2 time)
- 28 -
OWNER’S MANUAL
CONTENTS
Introduction
Chapter
1
Chapter
2
Chapter
3
How your composting
toilet Works
How Composting Works
The Composting Chamber
Compost Finishing Drawer
Evaporation Chamber
Winter Use
CENTREX 2000 Family Part Numbers
Wiring Diagram
CENTREX 2000 Family Explosion
Drawing
Inspection
Check for Damage
Check for Parts and Functionality
Placement of unit
Installation
CENTREX 2000 Rough in Dimensions
Included in your kit
Installing the 1 Pint(500ml)
Low-Flush Toilet
Installation Considerations for
The Waste Pipe
The 3” (75mm) Waste Inlet
Drain Installation
Handling Effluent
Vent Pipe Location
Adjusting the Fan Gate
Vent Pipe Installation
Leading the Vent through the roof
The Diffusor
Electrical Considerations
12 Volt Fan Installation
Start Up and Use
Initial System Start Up
2-5
2
2
2
3
3
4
5
6
6
6
6
7-12
7
8
8
9
9
9
9
10
10
10
10
11
11
11
12
13-15
13
Chapter
4
Chapter
5
Annual Start Up
Periodic Check Up
Ongoing Maintenance
Compost
Troubleshooting
Aerobic Compost Requirements
Compost Too Wet
Compost Too Dry
Waste not Breaking Down
Lumps
Drum Too Full
Flies
Mechanical
Troubleshooting
Urine Odor In Washroom
Occasional Urine Odor Outside
Sewage Odor when drum turns
Fan Noisy
Fan Not Working
Liquid Buildup/
Lack of Evaporation
Overflowing Liquid
Heating System Not Working
Liquid In Finishing Drawer
Drum Will Not Stay Vertical
Drum Will Not Turn
Drum Door Not Opening/
Closing
Waste Not Exiting Waste Pipe
Composting
Accessories
WarrantyInformation
Basic Maintenance
Electrical Specifications
14
14
15
16-19
16
17
17
17
18
18
19
20-24
20
21
21
21
22
22
22
23
23
23
24
24
24
25
26
27
28
- 1 -

- 2 - - 27 -
The key to the success of the “CENTREX 2000 Family” lies in it’s three chamber design. Each of the three cham-
bers; composting, compost finishing, and evaporation have their own independent environments for optimum effi-
ciency.
Introduction
HOW YOUR COMPOSTING TOILET WORKS
Composting is a natural recycling process where human
waste and toilet paper are broken down by microbes
into minerals and converted back to earth. Heat, oxy-
gen, organic material and moisture are needed to
transform this waste into good fertilizing soil, perfect for
your flower beds.
Oxygen is provided by the ventilation system, and by
tumbling the composting drum. Additional organic
material is introduced by adding “Compost Sure Blue”
(or 100% non-antibacterial wood shavings). The waste
entering the toilet is approximately 90% water content.
Any excess liquid which is not absorbed will collect on
the floor of the unit (evaporation chamber) where it
may be evaporated into water vapor and carried back
to the atmosphere through the venting system. The
remaining waste material is transformed into an inof-
fensive earth-like substance.
The Composting Chamber
The composting chamber is in the form of a Bio-drum
which holds the natural compost heat, provides the nec-
essary mass to maintain a good compost, and is rotat-
ed by turning the handle to achieve perfect mixing and
aeration.
During mixing, both the input door and the output doors
will remain closed. When the drum returns to the top
dead centre position ready to receive more waste, the
input doors remains open.
Compost is removed from the drum periodically, by
pulling the white drum locker button (on the handle side
of the composting unit)out, and turning the handle
counter-clockwise so that the drum rotates clockwise.
When this is done, the output door stays open, and
compost falls into the second chamber;-the compost
finishing drawer.
To ensure that the compost remains moist, but does not
get too wet (between 40 and 60% moisture content is
ideal), any excess liquid which the compost cannot
absorb drains through a screen in the rear of the drum
directly onto an evaporating tray beneath the screen,
and from there, overflows into the evaporating chamber.
The evaporating tray can be removed periodically to
remove peat moss debris that has accumulated.
Compost Finishing Drawer
The compost finishing drawer is at the extreme right of
the unit below the composting drum, and just above the
evaporating chamber. Compost from the drum is isolat-
ed in the drawer where it is allowed to ‘finish’ compost-
ing. For seasonally used units, several drawers of fin-
ished compost are normally removed at the beginning
of the season. Otherwise some composted material can
be extracted into the drawer and left there for 3-4
weeks until it is time to remove more compost from the
drum.
BBaassiicc
MMaaiinntteennaannccee IInnssttrruuccttiioonnss
Sealand toilet and 'Centrex Family' Central Units
The toilet is porcelain and should be cleaned with hot water or bio-degradable products to avoid damage
to the compost. If required 'Compost Quick' or Baking Soda can be used diluted in hot water.
Three
times a week weekly maintenance (every second day):
Turn drum to reveal waste inlet hole through access port and add compost mix at the rate of @ 1 cupful
(250ml) per person per day. (Scoop provided is 2 cups or 500ml)
Rotate handle clockwise to mix contents of Bio-drum and give 6 complete revolutions of the drum - (36-
40 rotations of the handle). Ensure that the drum door opening is in the vertical position at the end
after hearing the 'click' of the catch.
Spray 'Compost Quick' into the drum before and after mixing.
Check
compost volume and condition
in Bio-ddrum and:
If the waste in the Bio-drum is too wet add wood shavings and check your drum screen for blockages to
improve aeration.
To speed up composting, add one scoop of Microbe Mix every second week, and ensure that the drum is
not more than 1/2 full. If the drum is too full, follow the instructions to extract compost (page 15).
Monthly
maintenance and emptying cycle:
Rake out evaporation chamber with rake provided (the area below the finishing drawer). The black evap-
orating tray should be removed, solid matter tipped into the finishing tray and then replaced beneath the
drum screen.
Clean the drum screen. Remove the finishing drawer, the drum screen is to the left of the drawer on the
bottom of the drum. Spray the drum screen with Compost Quick and let sit for 15 minutes (this will help
to loosen the debris if the screen is not too encrusted). Scrub the screen vigorously with the wire brush.
If brushing the screen does not clear it and liquid is still not draining through the screen, use a screw-
driver or nail to puncture each hole in the drum screen.
Attention:
the composting
unit must remain plugged in to an electrical outlet continuously to function
odorlessly.
The AC/DC units should have both fans running while used in electric mode to prevent recircu-
lation
between vent stacks. If you will be away from the residence where the composting unit is installed
for
longer than three days, the power may be disconnected while the composting unit lays dormant.

Evaporating Chamber
The third chamber is the floor of the Sun-Mar “CENTREX
2000 Family” which forms the evaporation chamber
from where excess liquids may be evaporated. You will
always see liquid in this area, which is waiting to be
evaporated.
In electric and AC/DC units, air is pulled through intake
holes at the rear of the unit; over the evaporating
chamber, and up the 2”(50mm) vent stack which exits
from the front of the composting unit when AC power is
being used.
On non-electric or AC/DC units, when AC power is
unavailable, natural draft caused by the chimney effect
of the 4”(100mm) vent and assisted by the 12 volt fan
draws air into the unit and up the 4”(100mm)vent
stack.
In the electric mode, the evaporation process is further
assisted by a thermostatically controlled heating ele-
ment in a separate sealed compartment under the
evaporating chamber. This heater is on when there is
liquid in the evaporating chamber, and mostly off when
the chamber is dry. The heating system maintains
warmth in the evaporating chamber, and the indirect
warmth assists the composting process, without the
compost drying out. A safety drain exits from the side
of the composter which drains off any excess liquid to a
cess pool, recycling bed, or other approved facility.
Winter Use
Because "Sun-Mar" units are made largely of fiberglass
and high grade stainless steel, freezing temperatures
will not damage the composting unit. Composting action
decreases as the temperature drops, so for continuous
use, the composting unit should be kept constantly at or
above 55-60 degrees F (13-15 C). All exposed vent
stack should be insulated (right up to 2" or 5cm below
the diffusor) to minimize the condensation in the pipe
and avoid ice blockages. Drain pipe should be insulat-
ed or, in extreme temperatures, heat tape used to pre-
vent ice blockages.
In extreme temperatures, an additional source of heat
will also be required.
If the compost is frozen in the drum, the unit may be
used periodically as a "holding tank", until the compost
warms up and the microbes emerge from dormancy.
Space should be made in the drum prior to freezing to
accommodate winter use. The drum should NOT be
rotated when the compost is frozen.
Make sure that the composting unit is protected from
snow and ice accumulation to ensure that moisture
doesn't get into the heater base. It is a good idea to
put a tarp over the composting unit to protect it from
snow.
- 3 -
- 26 -
Composting Drum:
Waste and bulking mix-
Finishing Drawer: Where
compost is put to ‘finish’
Evaporation Chamber: This is
where you will frequently see liq-
uid collecting.
Evaporation Tray: Extends
the surface area of the
evaporation chamber
WARRANTY
SUN-MAR Corp. warrants the original purchaser that this toilet is free from defects in material
and workmanship under normal house or cottage use. SUN-MAR Corp. will furnish new parts for
any part that fails within three years or 5 years on the fibreglass tank, provided that our inspec-
tion shows that such failure is due to defective material or workmanship. Any part supplied by
us to replace another part is warranted for the balance of the original warranty period.
This warranty does not cover:
1. Damage resulting from neglect, abuse, accident or alteration; or damage caused by fire,
flood, acts of God or any other casualty.
2. Parts and accessories not sold or manufactured by SUN-MAR Corp. or any damage resulting
from the use of such items.
3. Damage or failure resulting from failure of the purchaser to follow normal operating proce-
dure outlined in the Owner’s Manual or in any other printed instructions.
4. Labor and services charges incurred in the removal and replacement of any parts found
defective under the terms of this warranty.
5. All returns to the factory must by made freight prepaid. All shipments from the factory are
made F.O.B. the factory.
This warranty is in lieu of all other warranties expressed or implied, and no person is author-
ized to enlarge our warranty responsibility, which is limited to the terms of this certificate. The
Company reserves the right to change, improve or modify its products without obligation to
install these improvements on equipment previously manufactured.

- 4 - - 25 -
ACCESSORY ITEMS FOR COMPOSTING
Solution containing a mixture of enzymes
designed to facilitate bacterial activity.
Also useful as a cleaner.
16 oz. (454 gm)
“Compost
Quick”
$15.50
EXPLOSION DRAWING OF COMPOSTING UNIT
SUN-MAR has developed a number of composting accessory items over the years in response to frequent requests
from users. These items may serve to improve composting speeds under some circumstances.
Name Description Container Price*
$16.00
Special selected dried bacteria to decom-
pose waste also includes dried enzymes
16 oz, (454 gm) Jar
“Microbe Mix”
“Compost Sure
Blue”
Bulking material containing 100%
chopped hemp stalk to provide moisture
retention, porosity, and free air space
within the compost.
30 litre (8 USG) /bag
$15.00
Prices do not include freight -
Please call for current freight charges before ordering or on-line at www.sun-mar.com
* Prices subject to change.
Note:
If the peat moss you are using is powdery and fine, it will result in poor porosity and an excessively wet, oxygen deficient com-
post. You should change or modify your bulking material. This situation is most likely to happen with central units which are
exposed to a lot of flushing liquid. Modify by switching to wood shavings, or use “Compost Sure Blue” for optimum results.

- 24 - - 5 -
CENTREX 2000 FAMILY PART NUMBERS & DESCRIPTIONS
Symptom Cause Remedial Action Prevention
Drum Will
Not Turn
Drum Door
Not
Opening/
Closing
Properly
Waste Not
Exiting
Waste Pipe
or Gas
Bubbles at
Toilet
Set screw securing
handle to shaft has
broken
Steel pin securing
gear wheel to shaft
has broken
Drum fallen from
bearings.
Drum too full
Hinges Stuck
Waste pipe blocked
1. Drill out set screw and use tap to re-thread
hole.
2. Replace with Screw #10-32x 1 1/4" Hex
Socket Stainless Steel set.
3. If unavailable, call Sun-Mar for a replace-
ment. Serial number of the Centrex 2000
will be required.
Have your serial number ready and call Sun-Mar
for a replacement Small Gear Kit.
Have your serial number ready.
If the drum has fallen, contact Sun-Mar immedi-
ately. Serial number of the Centrex 2000 will be
required.
See Section on “Compost Troubleshooting- Drum
Too Full”
Drum Hinges have compost caked on them.
Spray with Compost Quick and clean with nylon
brush. This will push the obstruction away so
the door swings freely.
1. Ensure piping installation remains as per
“Installation Instructions” (See earlier sec-
tion), and modify if necessary.
2. Follow “Periodic Check Up” recommenda-
tions and options.
3. If still blocked, install clear-out port as per
“Instructions” (See earlier section) and
clear with plumbing snake.
Keep composting drum from
becoming overloaded. This puts
undue strain on the nylon gear.
Not a common repair.
Drum should never be more than
1/2 full.
# PART DESCRIPTION # PART DESCRIPTION
1PP-INLEP-0207CX Centrex Waste Inlet 17 (Incl. In Heating Element Kit) Insulation
2AO-ACCEP-0481BX Access Port 18 AO-THERA-0001AX Thermostat
3PP-BUSH0-0812XX Bushing Threaded 19 AO-HEATE-0311XX Heating Element C9286-1
4AO-SMALL-0440XX Nylon Drive Gear 20 PM-ALUMS-0811EX Aluminum Sheet
5AO-SHAFA-0851XX SS Shaft Kit 21 AO-DRUML-0469BX Drum Locker
6AO-FAN_A-0315KX Fan Assembly (Electric & AC/DC) 22 PP-SCRE00-0821EX Drum Locker Knobt
7PP-GASK0-0188XX Rubber Gasket 23 PP-INTAV-0797XX Air Intake Vent
8PP_DRUM0-0624CX Centrex 2000 Drum 24 PF-TANKC-0761EX Centrex 2000 Tank
9PP-BEARP-0758RX Bearing Plate 25 PP-BEARS-0787CX Drum Bearing Strip
10 PP-GASK0-0188BX Rubber U Channel 26 AM-DRUMS-0329EX Drum Screen
11 AP-DRAI0-0306EX Drain Assembly 27 AO-DRUMD-2004EX Drum Door
12 PF-EVAPT-0789EX Evaporating Tray 28 AO-DRUMD-2004EX Drum Door
13 PF-DRAW1-0764EX Centrex 2000 Drawer 29 AO-HANDL-3000EX Swivel Handle
14 P0-ELECB-0001AX Electric Box Assembly (Electric and AC/DC) 30 PP-TOPC2-0802BX Centrex 2000 Top Kit
15 PF-HEAT1-0760EX Centrex 2000 Heater Tray 30 PP-TOPC2-0802DX Centrex 2000 NE Top
16 PP-GASK0-0188BX Rubber U Channel 30 PP-TOPC2-0802CX Centrex 2000 AC/DC Top
31 PP-INLEP-0207CX Waste Inlet Pipe

- 6 - - 23 -
Symptom Cause Remedial Action Prevention
Heating
System Not
Working
(Electric
and AC/DC)
Liquid in
Finishing
Drawer
Drum Will
Not Stay
Vertical
Test to determine
whether failure has
occurred
Thermostat Failure
Heating Element
Failure
Drum Screen
Clogged
Unit tilted to wrong
side
Condensation run-
ning down vent
stack
Drum Locker
Broken
Pull drawer out and put your hand in the evapo-
ration chamber (Not in the liquid). If there is no
warmth rising from the floor of the unit, your
heating system is not working. It is most com-
monly the thermostat that has failed. If you
notice a lack of evaporation, but there is still
warmth in the heating chamber, see “Liquid
Buildup” for solutions.
Have your serial number ready and call Sun-Mar
for a replacement. (Detailed instructions are
included with the replacement part)
If the insulation behind the thermostat access
cover is moist or discolored, or heating does not
work after the new thermostat has been connect-
ed, then the heating element has failed.
Have your serial number ready and call Sun-Mar
for a replacement. (Detailed instructions are
included with the replacement part)
Please note: Because this part is not easy to
replace, and because there is far less chance
that you will need this part than a thermostat; we
recommend trying to replace the thermostat first.
Remove the finishing drawer. By reaching
through the opening, you should be able to
access the drum screen. Scrub vigorously with a
wire brush.
Use a 1/4” to 1/2” (6-12mm) wedge piece under
the right side of the unit to drain liquid more eas-
ily towards the overflow drain of the unit.
Liquid will be clear or yellowish in appearance.
Make sure all vent pipe exposed to the outdoor is
well insulated and there are no horizontal runs.
Have serial number ready and call Sun-Mar for a
replacement part.
A ground fault interrupt circuit is
recommended to protect your
Centrex 2000 from power surges if
your heating system malfunctions.
Your thermostat and fan are the
two constantly moving parts on the
unit, and so are the most likely to
fail. Both are fairly easy to replace.
DO NOT wash the outside of the
unit with a hose or pressure wash-
er. Install the unit so that ground
water or weather cannot get at the
base of the unit.
When returning the drum to top
dead center position, do not bang
against drum locker with excessive
force. Remember to pull out the
drum locker button before rotating
the drum backwards.
This chapter describes how to inspect your new Centrex 2000 prior to installation for damage and make
sure you have received all of the parts.
Inspecting
the unit for
damage
Check Carton
Contents
and
Familiarize
Yourself with
the
Centrex 2000
Placement of
Unit
Chapter 1
Inspection
i) If there is any visible damage to the carton-
the contents of carton MUST be inspected before signing bill of lading. Damaged units
should be refused. Call Sun-Mar immediately.
ii) Before signing the shipping papers and dismissing the driver.-
ensure that the carton contents have been inspected.
iii) If the shipper has left-
Report the damage immediately to the transport company and call Sun-Mar.
iv) Soon after delivery, remove the Centrex 2000 carefully
from the carton-
If there is hidden damage, or for any service Questions, contact Sun-Mar to determine
the best course of action.
Check that the carton contains the vent stack (pipe, fittings, roof flashing and diffusor);
“Compost Sure”, rake, drain hose and fittings, etc. Notify Sun-Mar if you are missing anything.
i) Turn the drum handle clockwise to rotate the Bio-Drum for mixing and aeration. (The drum
rotates counter-clockwise and the drum door closes). TThhiiss
iiss hhooww yyoouu wwiillll rroottaattee tthhee ddrruumm..
ii) Lift and remove the access door and rotate the drum until the drum opening is visible
through the the access door opening for adding “Compost Sure Blue”. TThhiiss
iiss hhooww yyoouu wwiillll
aadddd
““CCoommp
poosstt
SSuurree BBlluuee””ppeeaatt mmoossss mmiixxttuurree ttoo tthhee ddrruumm
iii) Plug the unit’s electrical cord (Electric and AC/DC units) into a standard three-prong elec-
trical outlet, and feel the air movement from the vent outlet at the front of the unit to
ensure the vent system is working properly.
v) Pull out the compost finishing drawers at the bottom right of the unit.
vi) After the unit has been plugged in for ten minutes, place a hand on the floor of the
evaporating chamber (the area under the finishing drawer) to check it is warm to the
touch, and that the heater is working properly.
vii) Affix the “WARNING/CLEANING” sticker to the underside of the toilet seat cover, and check
that another is on the access port of the composting unit.
The unit should be installed so that the base is protected from weather. The rubber “u” chan-
nel at the bottom of the unit is well-sealed with silicone, but if the unit is sitting in water, has
snow melting against it, or rain pouring on it, this may eventually wear through and short out
the heating element. Install your unit with a protective cover of some kind around this area,
and do not install the unit in a pit where water can accumulate around it.

- 7 -- 22 -
Symptom Cause Remedial Action Prevention
Liquid
Buildup/
Lack of
Evaporat-
ion
Overflow-
ing
Liquid From
Drawer
Opening
Increased usage
Failure of heating
system
Mineral salts may
have accumulated in
the evaporation
chamber over a few
years, reducing
evaporation rates.
Overflow drain not
hooked up
Unit tipped forward
or to the right
Drains Blocked
The amount of liquid varies substantially between
installations. The overflow drain needs to be
installed on all Centrex 2000 with low-flush toi-
lets.
Check “heating not working”
To get rid of these, fill the evaporation chamber
with very hot water and 1/3 bottle of “Compost
Quick” enzyme liquid. Leave overnight. Drain all
Liquid through the overflow drain by tipping the
unit to the left (make sure overflow is hooked up
first)
Connect overflow safety drain (See also increased
usage above)
Check and ensure that the unit is level or tilting
slightly towards the left by placing a 1/4” - 1/2”
(6-13mm)shim piece under the right side of the
unit.
1. Rake peat mix away from left two corners
of Centrex 2000 Family. These are the
“buildup” areas. Use ‘hook’ end of rake to
pull debris from under drain baffles.If
drains are still clogged, proceed to step 2.
2. Check drain line for kinks, blockages or
upward bends. Remove and flush if blockages
present, unkink if bent and ensure that the
drain pipe is sloping downward. If your
drain pipe is in order, proceed to step 3.
3. Use a wire to poke peat moss out of the drain
assembly at the back. You will notice if this
is clogged because you will see a brown spot
through the opaque drain assembly. (Only
peat would make it through the drum
screen). If there is no peat clog, or the
problems continue, backwash the unit quickly
with a hose by applying the nozzle to one of
the drain assemblies and turning it on and off
very quickly. If the bottom of the unit is full of
liquid, you may wish to remove some prior to
back-washing. A shop-vac works well.
Install the overflow drain.
Rake evaporating chamber vigor-
ously at spring startups for cottage
use, and once every other month
for residential use.
1. A clogged drain is not very like-
ly to happen if you rake your
evaporating chamber 1-2 times
a season (cottage use) and 3-4
per year times for continuous
use.
2. Use premium 1” (25mm) ID
hose for the drain line. A good
hose will be less likely to kink.
Use elbows or fittings around
bends to prevent kinks.
3. Use Compost Sure Blue as your
bulking material.
4. Make sure that the evaporation
tray is installed properly(under-
neath the drum screen, with lip
pointing towards drawer and
lowest end pointing towards
the drains (to the left).
Chapter 2
Installation
ROUGH IN DIMENSIONS

Included
In Your Kit
Installing the
“1 Pint” Low
Flush Toilet
- 8 - - 21 -
Symptom Cause Remedial Action Prevention
Occasional
Urine Odor
Outside
Strong
Sewage
Odor
Present
when drum
turns
Fan Noisy
(Electric
and AC/DC)
Fan Not
Working
(Electric
and AC/DC)
1. Vent stack not
installed even
with peak of roof.
2. If vent stack is
installed above
roofline, natural
obstructions,
such as tall
trees, being
located in a
valley or close to
a hill may be
causing down-
draft.
Compost is
anaerobic
Fan damaged in
shipping, or bear-
ings are beginning
to wear if it is rat-
tling.
Fan vibrations res-
onating in vent pipe
(12 Volt Fan)
Debris in fan or
Mechanical Failure.
1. Check that the vent is installed 2-3 feet (600-
900mm) above the peak of the roof. If not,
extend the vent.
Guide wires may be necessary.
2. Add lime to the evaporation chamber; as
much as you think necessary. You will have
to rake more often if you do this. You can
also add lime to the compost if desired, but
no more than 1/2 cup(250ml) per week as it
may upset the PH balance in larger amounts.
3. Sun-Mar has a filter box available which will
filter the ammonia out of the vented air in a
downdraft situation. Call Sun-Mar for details.
Drum too full.
Handle not turned enough.
Incorrect bulking mixture used
1. If it is rattling, it may need to be cleaned or
the bearings are worn and the fan needs to
be replaced.
2. A hum is the normal sound the fan will make.
If you are in a very quiet setting it will be
more noticeable. If this is the case, consider
purchasing a fan speed control so that the
fan may be turned down when the noise
bothers you.
3. If it is a vibration noise, you may need to tie
down the top of the stack with guide wires and
bracket the pipe that runs up the side of
the structure.
Use pipe clamps to secure vent pipe or install fan
with rubberized couplings to help absorb vibra-
tions.
Have your serial number ready and call Sun-Mar.
Downdraft is dependent on wind
direction, as well as natural
obstructions, etc.
Initially, install the vent 2-3 feet
(600-900mm)above the peak of
the roof. If symptoms occur, add
lime or a filter box.
Ideally, drum should be maintained
at 1/2 full.
Drum should be turned every sec-
ond day, 6 complete turns of the
drum (36-40 turns of the handle)
Use Compost Sure Blue or 100%
non-antibacterial wood shavings
Clean the fan with a small brush
and/or compressed air nozzle once
every 2-3 years in cottage use, or
once a year residentially. To do
this, remove the fan assembly by
taking off the snap cap covers and
unscrewing the screws which hold it
in.
The entire assembly will then simply
slide out. This will prevent wear
and lengthen the life of your fan.
The fan is a continuously moving
part which will eventually have to be
changed. Do Not turn on and off
daily.
1- Owners Manual 1- 1 1/2” (38mm)Roof Flashing (Electric & AC/DC)
1- Warranty Card 1- 4” (100mm)Roof Flashing (NE & AC/DC)
1- Evaporation Tray 6- 2” x 30” (50760mm)PVC Pipe (Electric & AC/DC)
1- 8’ 4” (254cm)Drain Pipe 2- Compost Sure
1- Rake 1- 4” Diffusor (100mm)(Electric & AC/DC)
1- 3” (76mm)Centrex 2000 Inlet 1- 6” (150mm) Diffusor (NE & AC/DC)
5- 4” x30” (100x 700mm)ABS Pipe (NE & AC/DC) 1- Centrex 2000 Hardware Kit
1- 12 Volt 2.4 Watt Fan (NE & AC/DC) 1- Centrex NE Hardware Kit (NE & AC/DC)
1. Make sure the center of the floor flange is at least 11 inches
(280mm) from the back wall.
2. When Installing a new floor flange, make certain that the toilet
mounting bolts align properly with Sealand Traveler toilet mount-
ing pattern.
3. Secure flange to floor using flat head screws through counter-
sunk holes in flange. Insert bolts into slotted holes in flange
(Fig. A)
4. If toilet is being installed in a shower stall, apply a 1/4”(6mm) thick
by 3/4”(19mm) wide bead of glazing compound around the
circumference of the floor flange (Fig B).
5. Position floor seal by pressing the floor bolts up through the
holes in the seal.
6. Set toilet in place with bolts protruding up through mounting holes
in base (Fig C).
7. Install washers and hex nuts provided with toilet. Tighten nuts
down equally with standard 7/17” (12mm) open end wrench.
Remove excess Glazing compound from around base.
8. Connect water supply line to water valve (1/2” or 13mm MPT) inlet
using appropriate fittings (Fig D)
9. Turn on water supply and flush toilet to test for leaks.
10. Attach pedestal and pedal covers to toilet base. See instructions
below.

- 9 -
- 20 -
Symptom Cause Remedial Action Prevention
Urine Odor
Around
Unit
Horizontal runs or
downward slopes
on pipe are causing
condensate to
block pipe.
Fan has failed (110
volt) (Electric and
AC/DC)
Fan has failed (12
volt) (AC/DC and
NE)
Device other than
Sun-Mar diffuser is
installed on top of
the vent stack
Room where unit is
located is airtight.
2” Vent stack has
too many bends
and/or horizontal
lengths. (Electric
and AC/DC)
Install wall brackets on vent pipe to
prevent settling. DO NOT install hori-
zontal 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 diffuser.
Install your CENTREX 2000 in an
area with plenty of ventilation and
watch for competing appliances such
as bathroom fans and wood stoves.
Install the vent with minimal bends
(total bends should equal no more
than 360 degrees) and NO horizon-
tal or downward slopes.
Installation
Considerat-
ions for the
waste pipe
The 3” Waste
Inlet
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 3-13mm drop per foot maximum) so that the waste
travels with the liquid.
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 (460cm) 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
composting 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.
This assembly can be constructed by using a 3 (75mm)inch coupling or elbow (as shown below) and a
piece of 3 inch(75mm) pipe. Glue the pipe into the end of the coupling or elbow that will sit on the
composting unit waste inlet opening. Cut this pipe so that only 1/2”(13mm) protrudes from the coupling
or elbow. This pipe will fit in the waste inlet hole and should end just above the opening in the drum,
without interfering with drum movement.
The drains must be connected for all applications. The 1” (25mm)Safety drains at the left of the
“Centrex 2000”, exit to both the front and back. To connect one of the drains, (whichever is conven-
ient), remove the 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.
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 in the vent.
Wind turbines or vent caps may be discouraging
air movement. If so, replace with a Sun-Mar dif-
fuser.
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.
Chapter 5
MECHANICAL TROUBLE SHOOTING
Most problems are prevented through proper maintenance and the use of proper bulking materials in the composting
unit. If you do have a problem, the 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