Sun-Mar CENTREX 3000NE User manual

Serial No.______________
CENTREX 3000
OWNER’S MANUAL
CENTREX 3000 CENTREX 3000 NE
RATED CAPACITY
Residential & Continuous Use
CENTREX 3000: 6 Adults
CENTREX 3000 NE: 5 Adults
Ce tified to NSF/ANSI Standa d 41
Standa d 41 Weekend & Vacation Use
Ce tified fo liquid containment, CENTREX 3000: 9 Adults
odo s, and solid end p oducts in CENTREX 3000 NE: 8 Adults
both esidential and cottage use

Models fo which the manual applies:
CCEB-02510 Cent ex 3000 115V
CCNB-02540 Cent ex 3000 NE
CCEB-02515 Cent ex 3000 230V
Unit must be installed so elect ical components in the base a e p otected f om
ain, flooding and melting snow.
Place the wa ning and cleaning sticke on the inside lid of the ult a low flush
toilet.
Metal tools will damage the toilet.

OWNER’S MANUAL
CONTENTS
How Composting Wo ks 2
The CENTREX 3000 Toilet 3
The Patented Bio-D um 3
Compost Finishing D awe 3
Evapo ation Chambe 3
Inspection 4
Check fo Damage 4
What’s in the Box 4
Familia ize you self with the
CENTREX 3000 4
Placement of the unit 4
Installation 5-7
CENTREX 3000 Rough in
Dimensions 5
COMPACT Rough in Dimensions 5
CENTREX 3000 Elect ic Installation 6
Space equi ements 6
Vent Piping Location 6
Elect ical Conside ations 6
CENTREX 3000 NE Installation 7
Space equi ements 7
Vent Piping Location 7
Installation Common To Elect ic
And NE Units 8
Leading the vent th ough
the Roof 8
Leading the vent th ough the wall 8
The Diffuso 8
D ain Installation 8
Handling Effluent 8
Positioning The Collection Chambe 9
Installing The Wastepipe 9
Installing The Ult a-Low
Flush Toilet 9
Sta t Up And Use 10
- 1 -
Ongoing Maintenance 11
Sp ing Time Sta t Up 12
Winte Use 12
Compost T oubleshooting 13
Compost Too Wet 13
Waste is not B eaking Down 13
Lumps In D um 13
D um Too Full 13
Flies P esent 13
Mechanical
T oubleshooting 14-16
U ine Odo In Wash oom 14
Occasional U ine Odo Outside 14
St ong Sewage Odo 14
Fan Noisy 14
Fan Not Wo king 15
Liquid Buildup/
Lack of Evapo ation 15
Liquid Ove flow 15-16
Heating System Not Wo king 16
Liquid In Finishing D awe 16
D um Will Not Tu n 16
D um Doo Not Opening/
Closing 16
Basic Inst uctions 17
Composting Toilet
Accesso ies 18
CENTREX 3000 Specifications 19

HOW COMPOSTING WORKS
Composting is the natu al p ocess of decomposition that can be helped along by
p oviding the ideal conditions to help you composting toilet wo k at peak pe fo mance.
The ideal conditions fo decomposition to occu depend on seve al facto s: oxygen,
tempe atu e, moistu e content, and the ca bon/nit ogen atio.
Oxygen
Oxygen is ve y impo tant in composting. You compost should be ae ated in o de to
encou age ae obic bacte ia g owth. Ae obic bacte ia a e bacte ia that g ow and live in
the p esence of oxygen and a e ve y efficient in b eaking down waste. To ae ate the
compost and encou age the g owth of these bacte ia, the compost d um should be
tu ned th ee times pe week (10 complete tu ns of the d um).
Tempe atu e
Tempe atu e is anothe impo tant conside ation when composting. Optimal composting
tempe atu es ange between 70-100 ° F (21-38 ° C). Decomposition will slow
significantly o stop completely if the compost becomes too cold (below 55 ° F o 13 °
C). If you a e in an a ea that expe iences tempe atu es below 55 °F (13 ° C) additional
heat is equi ed if the composting toilet will be used continually o f equently. If used
fo inte mittent cottage application (3 - 4 weekends th oughout the cold season) no
additional heat is equi ed. The unit will function as a holding tank until the tempe atu e
wa ms up.
Moistu e
Moistu e is necessa y to achieve good compost. You compost should always be
damp, like you ga den afte you have wate ed it. This moistu e allows the bacte ia to
t avel a ound in the compost so that they can speed decomposition by digesting the
waste. If the compost is too d y, the bacte ia cannot su vive and decomposition will
slow o cease. When adding wate to the compost, you a e aiming fo damp compost,
not satu ated. Too much liquid in the compost limits the amount of oxygen that ae obic
bacte ia equi e to su vive. If no mal u ination is not enough to maintain the co ect
moistu e level in the compost, we encou age you to add additional wate to the d um.
Ca bon/Nit ogen Ratio
Almost all o ganic mate ial will compost. The p ope bulking mate ial and human waste
should be added to the composting toilet. In o de to maintain a good balance between
ca bon- ich mate ials (SUN-MAR Compost Su e Blue) and nit ogen- ich human waste
only.
- 2 –

THE SUN-MAR CENTREX 3000 TOILET
The key to the success of the CENTREX 3000 lies in its th ee chambe design. Each of the
th ee chambe s; patented Bio-d um, compost finishing d awe , and evapo ation chambe ,
have thei own independent envi onments fo optimum efficiency. The CENTREX 3000
elect ic ve sion has a the mostatically cont olled heate and fan assembly to help evapo ate
liquid and should be used whe e the e is a constant elect ical supply. The CENTREX 3000
NE (non-elect ic) ve sion is fo use whe e the e is no continuous elect ic supply. The
CENTREX 3000 NE has no heate but does include a 12 volt fan. Odo less ope ation is
achieved by a 4” vent assisted by the fan which acts like a chimney c eating a pa tial vacuum
within the unit.
The Patented Bio-D um
Unique to Sun-Ma , the patented bio-d um p ovides the necessa y mass to maintain good
compost and allows easy ae ation of the compost by simply tu ning the d um. Excess liquid
will exit th ough a sc een in the bottom of the d um into the evapo ation chambe . Mixing the
Bio-d um is accomplished by otating the handle in a clock-wise di ection. Compost moves
automatically th ough the d um with SUN-MAR’s unique Autoflow ® techology.
The Compost Finishing D awe
The compost finishing d awe sits in the opening in the f ont ight of the unit. Since the
CENTREX 3000 automatically discha ges finished compost into the collection chambe at the
end of the unit, this d awe is used only if you need to emove all compost f om the d um.
Removal of the compost finishing d awe and access panel allows access to the evapo ation
chambe fo cleaning and maintenance pu poses.
The Evapo ation Chambe
The evapo ation chambe is the floo of the unit unde the compost finishing d awe . This is
the a ea whe e any excess liquid will gathe fo evapo ation. A safety d ain exits f om the left
side of the composting toilet which will d ain ove -flow liquid that is not evapo ated to an
app oved facility.
The Collection Chambe
CENTREX 3000 units inco po ate SUN-MAR’s
unique Autoflow ® technology. As the d um otates,
compost moves automatically th ough the d um and
into a sepa ate collection chambe located nea the
end of the unit.
- 3 –

Inspection
We ecommend an inspection of the CENTREX 3000 p io to installation and to make
su e you have eceived all of the pa ts equi ed as listed below.
- 4 –
Inspecting the
unit fo
Damage
What’s in the
Box
Familia ize
You self with
the
CENTREX
3000 Toilet
Placement of
Unit
1) If the e is any visible damage to the ca ton-
The contents of the ca ton should be inspected befo e signing the
bill of lading. Damaged units should be efused. Call Sun-Ma
immediately.
2) If the shippe has left-
Repo t the damage immediately to the shipping company and call
Sun-Ma .
3) Soon afte delive y, emove the CENTREX 3000 Toilet ca efully
f om the ca ton- If the e is hidden damage, o fo any se vice
questions, contact Sun-Ma to dete mine the best cou se of action.
1- Owne s Manual 1- 6” (150mm) Diffuso (NE)
1- Wa anty Ca d 1- Collection Chambe
1- Ha dwa e Kit 6- 2” x 30” (76.2cm)PVC Pipe (Elect ic)
1- 8’ 4” (254cm)1” ID D ain Pipe 2- Compost Su e Blue
1- Rake 1- 4” Diffuso (100mm)(Elect ic)
1- 12 Volt 2.4 Watt Fan (NE) 5- 4” x30” (10.16 x 76.2cm)ABS Pipe( NE)
1) Tu n the d um handle clockwise to otate the patented Bio-D um fo
mixing and ae ation. (The d um otates counte -clockwise and the
d um doo closes). This is how you will otate the d um du ing
egula ope ation.
2) Lift and emove the access doo and otate the d um until the d um
opening is visible th ough the access doo opening fo adding
“Compost Su e Blue”. This is how you will add “Compost Su e Blue”
bulking mixtu e to the d um du ing egula ope ation.
3) Plug the unit’s elect ical co d (Elect ic) into a standa d th ee-p ong
Elect ical outlet, and feel the ai movement f om the vent outlet at
the f ont of the unit to ensu e the vent system is wo king p ope ly.
4) Pull out the compost finishing d awe at the bottom ight of the unit.
Afte the unit has been plugged in fo ten minutes, place a hand on
the floo of the evapo ating chambe (the a ea unde the finishing
d awe ) to check it is wa m to the touch, and that the heate is
wo king p ope ly.
The unit should be installed so that the base is p otected f om weathe .
The ubbe “u” channel at the bottom of the unit is well-sealed, but if the
unit is sitting in wate , has snow melting against it, o ain pou ing on it,
this may eventually wea th ough and sho t out the heating element.
Install you unit with a p otective cove of some kind to p otect it f om
p ecipitation f om eaching it. The composting unit should be placed on
a level su face o sloping slightly towa d the safety d ains assembly to
ensu e d ainage of effluent. Do not install the unit in a pit whe e
wate can accumulate a ound the composte .

Installation
CENTREX 3000 ROUGH IN DIMENSIONS
- 5 –

CENTREX 3000 Elect ic Installation
- 6 –
Space
Requi ed and
othe
Installation
Conside ations
Vent Pipe
Location
Elect ical
Conside ations
1) To facilitate maintenance and compost emoval, ensu e that the e is at least 17” in f ont of the
CENTREX 3000, fo emoval of the d awe and access panel.
2) The safety d ain is equi ed in ALL installations. Install the unit in a location whe e the safety d ain
can be connected. This d ain exits f om the left side of the unit and must slope downwa d at all
points.
3) Install in a location whe e the vent pipe can be attached as pe the inst uctions listed below.
4) Install in a location that is not ai tight. The toilet must be able to vent to ensu e odo f ee ope ation.
5) Ensu e that the CENTREX 3000 is accessible fo ongoing maintenance.
6) Ensu e that the installation a ea is a minimum height of 28”. WE DO NOT RECOMMEND DIGGING
BELOW GROUND TO FACILITATE THE INSTALLATION OF THE CENTREX 3000.
7) Ensu e the CENTREX 3000 is p otected f om p ecipitation.
8) Ensu e that the unit is installed on a level su face o sloping slightly towa ds the safety d ain.
1) If unning a vent th ough a wall, it should be done at a 45° angle to p event condensation f om
accumulating in the vent pipe, causing a const iction. NO HORIZONTAL SECTIONS OF VENT.
Venting should be installed ve tically.
2) All vent pipe that is exposed to the outside o in a non-heated space should be insulated if
using the unit du ing cold weathe .
3) INSTALL VENT SO THAT IT TERMINATES 24” - 30” ABOVE HIGHEST PEAK OF THE ROOF.
4) If you will be installing venting on a steeply pitched oof whe e snow shea may occu ; Install a
heavie pipe th ough the oof and feed the enclosed vent th ough the heavie pipe. Seal
between the pipes with expandable foam o othe such wate -tight substance. The heavie pipe
should be able to withstand the weight of sliding snow.
5) If the e is mo e than 36” of vent needed above the oof line to each 24-30” above the highest
peak of the oof (diffuso included in measu ement), use guy wi es to secu e the vent above
the oof.
6) Limit bends in the vent stack to no mo e than 4 that have a combined total of 180 °.
7) The vent must be installed sepa ately f om ALL othe household vents. Venting cannot be
me ged with othe venting. Doing so will p event the unit f om ope ating in an odo less fashion.
8) All connecto s in the vent pipe should be sealed. Use silicone caulking to seal the connection
between the vent and the fan. PVC cement may be used on all othe vent connections.
9) The diffuso should be glued ve tically on to the top of the vent pipe. This assembly helps d aw ai
up the vent pipe.
Possible venting configurations for the 2” electric vent pipe.
The fan will un continuously 24 hou s pe day. A g ound fault inte upte (GFI) ci cuit is ecommended
fo any unit installed in an envi onment whe e it will be exposed to moistu e. This may be installed
di ectly on the wall socket o at the ci cuit b eake . If you a e in an a ea whe e you expe ience powe
fluctuations, you may wish to install a su ge p otecto .
Some 230V models may have an ove cu ent fuse p otection on the heating element ci cuit which is
located on the elect ic box.

CENTREX 3000 NE (Non-Elect ic) Installation
- 7 –
Space
Requi ed and
othe
Installation
Conside ations
Vent Pipe
Location
Vent Inlet
Coupling
12 Volt Fan
1) To facilitate maintenance and compost emoval, ensu e that the e is at least 17” in f ont of the
CENTREX 3000, fo emoval of the d awe and access panel.
2) The safety d ain is necessa y fo ALL installations. Install the unit in a location whe e the
safety d ain can be connected. This d ain exits f om the left side of the unit and must slope
downwa d at all points.
3) Install in a location whe e the vent pipe can be attached as pe the inst uctions listed below.
4) Install in a location that is not ai tight. The toilet must be able to vent to ensu e odo f ee
ope ation.
5) Ensu e that the CENTREX 3000 NE is accessible fo ongoing maintenance.
6) Ensu e that the installation a ea is a minimum of 28” in height. WE DO NOT RECOMMEND
DIGGING BELOW GROUND TO FACILITATE THE INSTALLATION OF THE CENTREX
3000.
7) Bends in the vent, installation nea hills o ove hanging t ees may cause down d aft. A 12 volt
fan may be necessa y.
8) Competing appliances (ie. wood stove) may equi e an ai intake installed f om the outdoo s if
the unit is installed in an enclosed basement. A 12 volt fan may be equi ed.
9) Ensu e that the unit is installed on a level su face o sloping slightly towa ds the safety d ain.
1) All vent should be ve tically installed.
2) Limit bends in the vent stack to no mo e than 2 - 45 ° bends.
NO HORIZONTAL SECTIONS OF VENT.
3) INSTALL VENT SO THAT IT TERMINATES 24” - 30”
ABOVE HIGHEST PEAK OF THE ROOF. If the vent is being
installed on a steeply pitched oof whe e snow shea may
occu ; Install a heavie pipe th ough the oof and feed the
enclosed vent th ough the heavie pipe. Seal between the
pipes with expanding foam o othe such wate -tight mate ial.
The heavie pipe should be able to withstand the weight of
sliding snow.
4) If the e is mo e than 36” of vent needed above the oof line
to each 24-30” above the highest peak of the oof (diffuso
included in measu ement), use guy wi es to secu e the vent
above the oof.
5) The vent must be installed sepa ately f om ALL othe
household vents. Venting cannot be me ged with othe
venting. Doing so will p event the unit f om ope ating
odo lessly.
6) All connecto s in the vent pipe should be sealed. Use
silicone caulking to seal the connections.
7) The diffuso should be glued ve tically on to the top of the
vent pipe. This assembly helps d aw ai up the vent pipe.
Place the vent inlet coupling into the hole on the top of the unit
fo the 4” vent and so that the 1” of smalle diamete pipe is
p ot uding into the hole. This is the fi st piece of the venting.
Once you have finished assembling the vent, un a bead of
silicone a ound whe e the inlet coupling meets the top of the
composting unit to p event odo f om escaping.
Install the 12 volt fan on the inlet coupling with the la ge side
with the wi es p ot uding facing upwa ds (as shown in the
pictu e at ight). When the 12 volt fan is tu ned off, it fo ms an
obst uction in the vent, and should the efo e un continuously
while the cottage o home is occupied. An optional switch (as
small as 1 amp) may be installed, and the fan tu ned off when
the toilet will not be used fo seve al weeks. The ed wi e
should be connected to the positive (+) te minal on you batte y
o DC system, and the blue wi e to the negative te minal (-).
The 12 volt fan may be powe ed with a batte y that is
connected to a gene ato , sola panel, o othe alte native
ene gy system.

Installation Common To Elect ic and NE Units
-
- 8 -
Leading the
vent th ough the
oof
Leading the
vent th ough the
wall
The Diffuso
D ain
Installation
Handling
Effluent
The vent stack (shown in diag am) should end
app oximately 30” above the peak of the oof so that
it is less subject to downd aft. Whe e the pipe is
taken th ough the oof, a oof flashing may be
equi ed to seal the installation. If you a e in an a ea
whe e snow shea is a dange , you may wish to
install a heavie pipe a ound the vent pipe whe e it
exits f om the oof. If you do choose to do this,
ensu e that you seal the a ea between the pipes
with a wate p oof substance to p event leaks.
When it is necessa y to lead the vent th ough a wall,
connect one 45° elbow on the vent outlet on the unit.
Using a hole saw o othe app op iate tool, cut a
hole th ough the wall boa d behind the unit so that
the vent pipe can be inse ted into the 45° elbow. Cut
a simila hole on the othe side of the wall that is
slightly highe than the inne hole so that the vent
pipe will be angled upwa d at 45°. If installing
th ough an exte io wall, wate p oof sealant will be
equi ed a ound the vent pipe whe e it eme ges f om
the building.
The diffuso p ovided with the unit is a simple device
to be installed at the top of the vent stack with the
la ge pipe p ot uding above the smalle . To install,
simply glue the diffuso ve tically on the topmost
section of vent pipe. The diffuso design encou ages
upd aft, and discou ages wind and weathe f om
going down the vent stack. We do not ecommend
installing anything else on the top of the vent as it
could impede the venting. Unlike wind tu bines,
diffuso s a e less likely to f eeze in winte , and a e
mo e effective in calm weathe .
The safety d ain
MUST
be connected as it will be equi ed in all Cent ex 3000 NE
installations o Cent ex 3000 elect ic with ult a-low flush toilets.
- Remove the o ange cap f om one side of the ove flow d ain assembly.
- Place a 1” hose clamp ove the end of the d ain hose that will be connected to the
ove flow d ain assembly.
- Push the d ain hose ove the ibbed end of the ove -flow d ain and clamp with the 1”
SS hose clamp.
- Connect the 1” hose to an app oved d ainage facility.
- The safety d ain is g avity fed. The d ain hose must be below the level of the safety
d ain in o de to function.
The following a e possible options to take ca e of the liquid :
- Feed into a lined pit filled with g avel and sand. Such a
ecycling bed also ensu es a closed loop system.
- Feed into a small cesspit o “F ench d ain”.
- Plumb into an existing septic o holding tank line.
Installation should be in acco dance with applicable local
egulations.

– 9 –
Positioning The
Collection
Chambe
Installing the
waste pipe
Installing the
Ult a Low
Flush Toilet
Line the bottom of the collection chambe with the plastic bag (p ovided). Place the
collection chambe base on the ight side of the CENTREX 3000 so that the base
ests unde the opening in the patented bio-d um. Place the top of the collection
chambe on the base. SUN-MAR Autoflow® technology allows compost to
automatically deposit into the collection chambe .
When installing the waste pipe f om the toilet to the unit, the following should be
conside ed:-
1) The pipe should be eithe 45 ° o ve tical (if composting unit is di ectly below
toilet), o at a 2-3 ° angle (1/8”-1/4” o 3-13mm d op pe foot maximum) so that
the waste t avels with the liquid.
2) Pipe should not slope upwa ds at any point.
3) Connections should be snug so that waste does not cause blockage.
4) It is ecommended that the waste pipe be no longe than 15 feet (460cm)
without installing a clea out po t(a Y fitting with sc ew on end cap) nea the
toilet to p ovide easy access should it be equi ed.
5) Use a soft sealant, such as silicone fo the connection of the waste pipe to the
unit so that the unit can be moved fo se vicing o othe easons should this
eve be equi ed.
6) Insulate pipe if unit is to be used du ing the winte .
7) Fo longe installations of waste pipe, ensu e the waste pipe is suppo ted
to p event sagging.
1) Make su e the cente of the floo flange is at least
11 inches (280mm) f om the back wall.
2) When Installing a new floo flange, ensu e that the
toilet mounting bolts align p ope ly with ult a low
flush toilet mounting patte n.
3) Secu e flange to floo using flat head sc ews
th ough counte -sunk holes in flange. Inse t bolts
into slotted holes in flange(Fig. A)
4) Position floo seal by p essing the floo bolts up
th ough the holes in the seal.
5) Set toilet in place with bolts p ot uding up th ough
mounting holes in base (Fig C).
6) Install washe s and hex nuts p ovided with toilet.
Tighten nuts down equally with standa d 7/16”
(12mm) open end w ench.
7) Connect wate supply line to wate valve (1/2” o
13mm MPT) inlet using app op iate fittings (Fig D)
8) Tu n on wate supply and flush toilet to test fo
leaks.
9) Attach pedestal and pedal cove s to toilet base.
See inst uctions below.

Initial Sta t Up and Use
These steps a e only used when sta ting up you CENTREX 3000 toilet fo the fi st
time o when you have emptied the d um and need to e-sta t the compost.
Afte installation is completed do the following:
Step 1 : Sp ay Compost Quick: Remove the finishing d awe
and sp ay the whole inne floo of the unit unde the
finishing d awe . Sp ay Compost Quick into the patented
bio-d um and the inside of the finishing d awe .
Step 2: Pou 1 bag of Compost Su e Blue into a bucket and add 2 qua ts of
wa m wate . Add 1/2 of the Mic obe Mix packet to the bucket. Allow
the Compost Su e Blue to abso b the wate (about an hou ).
Step 3: Scoop the Compost Su e Blue mixtu e into the patented Bio-D um
th ough the access doo on the CENTREX 3000. Rotate the d um
to mix. The opening in the d um must emain open unde the waste pipe.
The CENTREX 3000 toilet is now eady fo use.
Step 4: Fo elect ic units only. The fan will un continuously 24 hou s
pe day.
120 Volt Use: Plug it in to a th ee p ong elect ical outlet.
240 Volt Use: The unit must use a mains plug with an ea th
connection. Replacement of elect ical components (including the
powe co d and mains plug)must be pe fo med by a qualified pe son
to avoid haza d.
When you fi st sta t up the CENTREX 3000, it will take app oximately 6 weeks at optimum tempe atu es (70-90 ° F)
befo e you will have sufficient quantities of mic obes in the d um to actually achieve good compost. Du ing this time, the
contents of the patented bio-d um sta t out as Compost Su e Blue and waste. Ove the fi st 6 weeks, you will notice that
the compost will hold moistu e and will become mo e unifo mly da k in colo .
Du ing the fi st six weeks, you may notice that some Compost Su e Blue has fallen th ough the d um sc een onto the
evapo ation chambe to the left of the finishing d awe . This should be aked out and emoved with the ake tool p ovided
with the unit.
NOTE: Regula toilet pape may be used. Toilet pape is a good sou ce of ca bon fo you compost so it may be
added to the Bio-D um™
- 10 –

Ongoing Toilet Maintenance
Once you CENTREX 3000 toilet is installed and you have gone th ough the initial sta t-up p ocedu e,
follow the steps outlined below to keep you composting toilet wo king optimally.
CAUTION
1) Do NOT add o clean the toilet bowl line with chemicals. Chemicals will kill the bacte ia. INSTEAD, clean the bowl
line with Compost Quick.
2) Do NOT add plastic, glass, metal, cleaning fluids, ciga ettes. Add only waste and bulking mate ial.
3) Kitchen o ga den waste, a e NOT ecommended.
4) Do NOT add baby wipes, diape s o feminine pape as they will not compost.
- 11 -
Add one cup of
Compost Su e Blue
pe pe son pe day of
use
Sp ay Compost Quick
on the su face of the
compost
Tu n the handle
clockwise eve y
second day to mix the
compost
Make su e that the
opening in the d um
is cente ed unde the
waste pipe.
Eve y two weeks
Eve y th ee months
Twice pe yea
Pe iodic maintenance
Even if you only use the toilet fo u ination then at least one cup of
Compost Su e Blue should be added pe pe son pe day of use. Add
the Compost Su e Blue th ough the access doo CENTREX 3000
toilet. The Compost Su e Blue should be added to the composting
unit, just p io to tu ning the d um.
Eve y second day befo e tu ning the handle, sp ay 3-4 sp ays of
Compost Quick on the su face of the compost. Compost Quick is an
enzyme that will speed up the composting p ocess.
Tu n the handle in a clockwise di ection to mix and ae ate the
compost. When mixing, ensu e that the d um otates 10 complete
evolutions (70 tu ns of the handle).
The hole in the d um must be open unde the waste pipe, eady to
eceive waste.
Add one scoop of Mic obe Mix to the patented bio-d um to ‘ echa ge’
the pile. This will help to ensu e you mic obe colony stays constant
and healthy.
Rake the evapo ation chambe : Remove the finishing d awe . Rake
any solid deb is f om the floo of the unit unde the d awe
(evapo ation chambe ), paying ext a attention to the left co ne s of
the unit as this is whe e deb is may accumulate. Remove the solid
deb is.
Clean the d um sc een. Sp ay the d um sc een with Compost Quick
and let sit fo 15 minutes (this will help to loosen the deb is if the
sc een is not too enc usted). Sc ub the sc een vigo ously with the
wi e b ush. If b ushing the sc een does not clea it and liquid is still
not d aining th ough the sc een, you may have to eso t to having to
use a sc ewd ive o nail to punctu e each hole in the d um sc een.
Empty the collection chambe .

Seasonal Use and Sp ingtime Sta t Up
Rake
Remove the finishing d awe and access panel completely and use the ake tool to ake any loose mate ial f om the floo
of the unit. Ca eful attention should be paid, to the left two co ne s of the unit (nea the safety d ain) to ensu e that you
d ains do not get clogged.
Add Wate & Mic obe Mix
Add some wa m wate to the emaining compost, enough to ensu e that it is quite moist. Also, add some Sun-Ma
Mic obe Mix (two of scoops) to give the compost pile a “kick-sta t” and otate the d um seve al times to mix. If you
composting toilet is elect ic, plug it in and use fo anothe season.
Winte Use
No Winte Use
Just add wate , lots of wate . Soak the compost in the d um to p event it f om d ying out befo e Sp ing. Make su e to
unplug the unit if elect ic. If you have a non-elect ic unit, it may be a good idea to place something ove the diffuso to
p event animals (who a e looking fo a home at this time of yea ) f om getting in.
Occasional Winte Use
If the unit will be used fo 3-4 weekends th oughout the winte season then it is conside ed occasional use. All of the same
conside ations should be taken with these units to winte ize them. When the tempe atu e dips below 55 ° F (13 ° C),
composting activity will dec ease d amatically. These units do not need to be kept wa m and will act only as a holding tank
du ing the winte months until they wa m up enough in the sp ing to begin composting again. Du ing the winte , the
compost will f eeze into a solid mass so the d um should not be tu ned as it may damage the composting toilet. With this
in mind, it is a good idea to emove enough compost befo e it gets too cold to make oom in the d um fo winte use.
Heavy o Residential Winte Use
These units should be kept in a heated a ea and all winte ization tips should be followed, including the following:
1) Vent Pipe - elect ic models; all 2" vent pipe should be insulated if they a e exposed to the outside o in an unheated
a ea. If you a e in an a ea that expe iences ext eme winte conditions, we ecommend that heat tape should be applied
to the exposed vent pipe to p event ice blockages.
2) Safety D ain - all models; we ecommend that the safety d ain should be installed and insulated above the f ost line.
The e will be less evapo ation in the winte so this will help with any excess liquid. If possible, heat tape can be applied
to the safety d ain to p event ice blockage.
3) Keep it wa m; If the composting toilet is used f equently in the winte then the composting pa t of the unit should be
kept in a wa m place. Below 55 ° F (13 ° C), composting actions slows d amatically so if it is in a place that falls below
this tempe atu e, a sou ce of heat should be p ovided fo the unit so that it can keep up with constant use.
Wa ning: The wate valve must be d ained (o emoved) if the ult a low flush toilet is installed
in an a ea whe e f eezing tempe atu es a e anticipated to p event f eezing and c acking of
valve.
- 12 –

Compost T oubleshooting
- 14 –
- 13 –
Symptom Cause Remedial Action P evention
Compost
Too Wet
Waste not
B eaking
Down at all
(the d um
will fill up
quickly)
La ge
Lumps
in
Compost
D um Too
Full
Flies
P esent
Compost po osity
is poo .
D um sc een
clogged
Insufficient
moistu e in
compost
Insufficient
Mic obes
Room
Tempe atu e
Unde 55 ° F /13 °C
Compost Too D y
Compost Bio-
D um not otated
enough
Kitchen/Ga den
Waste added
-compost too
d y
-compost
anae obic
-fo eign mate ial
added
Change bulking mate ial to Compost Su e
Blue.
Sp ay the d um sc een with Compost
Quick. Sc ub the d um sc een with wi e
b ush.
A moistu e content of 40-60% is ideal fo
ae obic mic obes to th ive.
Add Sun-Ma Mic obe Mix.
Install heat sou ce to inc ease tempe atu e.
Tempe atu e should be kept above 55 °
F /13 °C constantly to ensu e the composting
action does not stop completely.
Add 1/2 to 1 gallon of wa m wate to
compost in o de to b ing it up to
app op iate moistu e level.
Remove lumps o b eak them apa t.
Remove compost until d um is only half full
o less. Rotate compost tho oughly to
ae ate, and add compost accele ant,
(Compost Quick and Mic obe Mix) if
available.
We do not ecommend adding kitchen o
ga den sc aps.
1)To eliminate flies, you can use any
pesticide that is used on you ga den.
Pesticides used fo ga den use a e not
anti-bacte ial so a e safe to use on you
compost.
2) The alte native to using pesticides is to
completely clean the toilet out, wash the
inside with soap and wate
IMPORTANT:
Application of a pesticide in a SUN-MAR
toilet is not a health conce n because all
SUN-MAR units a e vented.
If using pesticides, avoid spilling on the
oute shell of the composte
Use Sun-Ma Compost Su e
Blue
Add wate to patented bio-
d um
Be su e to add mic obe packet
at sta t up.
Install unit in wa m a ea. The
wa me the a ea, the bette
you compost will be!
Use p ope bulking mate ial
and add wa m wate if
necessa y.
Rotate the d um, 10 full
evolutions, eve y othe day.
Do NOT let d um get above
1/2 full. This will lead to lack
of ae ation, and anae obic
compost.
Do Not add kitchen o ga den
waste.
1) Keep compost moist. In
o de to dete mine a good
level of moistu e, shine a
flashlight into the d um. The
compost should have a slight
gloss o shine. If it does not,
add wa m wate to it until it
eaches this consistency.
Fungus gnats tend to be
att acted to a d y compost,
due to the fungus which
begins to fo m on the su face
when it d ies out. A good,
moist compost will not be
att active to flies.
2) Do not add topsoil f om the
g ound, composted matte , o
kitchen sc aps to the toilet.
Flies may be p esent in, o
att acted to these items.
3
)
Use “Compost Su e
Blue
”.

MECHANICAL TROUBLE SHOOTING
- 15 –
Symptom
Cause
Remedial Action
P evention
U ine Odo
in
Wash oom
Occasional
U ine Odo
Outside
St ong
Sewage
Odo
Fan Noisy
Ho izontal uns o
downwa d slopes
on vent pipe
Fan has failed
Downd aft
Competing
appliances
(CENTREX 3000 NE)
1) Vent stack not
installed above
peak of oof.
2) If vent stack is
installed above
oof line, natu al
obst uctions, such
as tall t ees, being
located in a valley
o close to a hill
may be causing
downd aft.
Compost is
anae obic
Fan damaged in
shipping o
bea ings a e
beginning to wea .
Re-install the vent so the e a e no ho -
izontal o low points whe e condensation
can collect.
Have you se ial numbe eady and call
SUN-MAR fo a eplacement. Inst uctions
a e included with the eplacement fan.
If you believe that the e may be a down-
d aft outside of the building, it may be a
good idea to emove you fan assembly
p io to installation and set the fan gate to
‘0’ to p event u ine odo in the bath oom.
(elect ic)
Wood stoves o fu naces installed in a
tightly sealed oom with the composting
toilet may d aw ai in causing a vacuum in
the oom. This will d aw ai down the vent
pipe.
1) Check that the vent is installed above
the peak of the oof. If not, extend the
vent. Guide wi es may be necessa y.
2) Add lime to the evapo ation chambe –
as much as you think necessa y. You
will have to ake mo e often if you do
this.
3) SUN-MAR has a filte box available
which will filte the ammonia out of the
vented ai in a downd aft situation. Call
SUN-MAR fo details.
Begin following: “Compost t oubleshooting”
suggestions.
1) If it is attling, it may need to be cleaned
o the bea ings a e wo n and the fan
needs to be eplaced.
2) A hum is the no mal sound the fan will
make. If you a e in a ve y quiet setting it
will be mo e noticeable. If this is the
case, conside pu chasing a fan speed
cont ol so that the fan may be tu ned
down.
Install wall b ackets on vent
pipe to p event settling. DO
NOT install ho izontal uns
as liquid will collect and
block ventilation, causing
odo .
The fan is a constantly
moving pa t and has a finite
se vice life.
Downd aft is dependent on
wind di ection as well as
natu al obst uctions etc.
Initially, install the vent
above the peak of the oof.
If symptoms occu , add lime
o a filte box.
Follow “Ongoing Main-
tenance” and use p ope
bulking mate ial.
Clean the fan with a small
b ush and/o comp essed
ai nozzle once a yea .
This will p event wea and
lengthen the life of you fan.

- 16 –
Symptom Cause Remedial Action P evention
Fan Not
Wo king
Liquid
Build up/
Lack of
Evapo at-
ion
Liquid
Ove flow
Deb is in fan o
mechanical failu e.
Inc eased usage.
Climactic
conditions
Mine al salts may
have accumulated
in the evapo ation
chambe ove time,
educing
evapo ation ates.
D ains Blocked
Ove flow d ain not
hooked up
Unit tipped fo wa d
Remove the fan assembly f om the unit and
vacuum any dust out of the fan blades.
Check the powe sou ce. If this does not
emedy the p oblem, have you se ial
numbe eady and call SUN-MAR
The amount of liquid va ies substantially
between installations. The ove flow d ain
needs to be installed.
Evapo ation ates va y substantially with
climatic conditions. Expect faste
evapo ation ates du ing wa m d y weathe .
To emove these, fill the evapo ation
chambe with ve y hot wate and 1/3 bottle
of “Compost Quick” enzyme liquid. Leave
ove night.
D ain all Liquid th ough the ove flow d ain
by tipping the unit up (make su e ove flow
is hooked up fi st)
1) Rake peat moss away f om the safety
d ains. This is the “build up” a ea. If
d ains a e still clogged, p oceed to step
3.
2) Check d ain line fo kinks, blockages o
Upwa d bends. Remove and flush if
blockages p esent, un-kink if bent and
ensu e that the d ain pipe is sloping
downwa d. If you d ain pipe is in o de ,
p oceed to step 3.
3) Use a wi e to poke blockage out of the
d ain assembly. A b own spot will be
visible th ough the opaque assembly.
Connect ove flow safety d ain
Check and ensu e that the unit is level.
The fan is a continuously
moving pa t which will
eventually have to be
changed. Do Not tu n on
and off daily.
Install the ove flow d ain.
Rake evapo ating chambe
at sp ing sta t ups fo
cottage use, and once
eve y othe month fo
esidential use.
1) A clogged d ain is not
ve y likely to happen if
evapo ating chambe is
aked eve y 3-4 months.
2) Use p emium 1”ID hose
fo the d ain line. A good
hose will be less likely to
kink. Use elbows o
fittings a ound bends to
p event kinks.
3) Use Compost Su e Blue
as a bulking mate ial.
Evapo ation will slow du ing
damp weathe , make su e
d ain hose is installed.

- 18 -
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- 17 -
Symptom Cause Remedial Action P evention
Heating
System Not
Wo king
Liquid in
Finishing
D awe
D um Will
Not
Tu n
D um Doo
Not
Opening/
Closing
P ope ly
Test to dete mine
whethe failu e has
occu ed
The mostat Failu e
Heating Element
Failu e
Blown fuse
(some 230V units
ONLY)
D um Sc een
Clogged
Set sc ew secu ing
handle to shaft has
b oken
Steel oll-pin
secu ing gea
wheel to shaft has
b oken
D um too full
Hinges Stuck
Pull finishing d awe out and put you hand
in the evapo ation chambe (NOT in the
liquid). If the e is no wa mth ising f om the
floo of the unit, you heating system is not
wo king. It is most commonly the
the mostat that has failed. If you notice a
lack of evapo ation, but the e is still wa mth
in the heating chambe , see “Liquid Build
up” fo solutions.
Have you se ial numbe eady and call
SUN-MAR fo a eplacement. (Detailed
inst uctions a e included with the
eplacement pa t)
If the insulation behind the elect ic box is
moist o discolo ed, o heating does not
wo k afte the new the mostat has been
connected, then the heating element has
failed.
Have you se ial numbe eady and call
SUN-MAR fo a eplacement. (Detailed
inst uctions a e included with the
eplacement pa t) Check fuse located on
the elect ic box to ensu e that it is
functioning co ectly, if the wi e in the fuse
is cha ed o b oken, eplace the fuse.
Remove the finishing d awe . The d um
sc een is located on the bottom of the
patented Bio-d um, to the left of the d awe
opening. Sc ub d um sc een with a wi e
b ush.
D ill out set sc ew and eplace, o have
you se ial numbe eady and call SUN-
MAR fo a handle eplacement kit
(inst uctions included).
Have you se ial numbe eady and call
SUN-MAR fo a eplacement small gea kit.
Sp ay hinges with Compost Quick. Sc ub
hinges with toothb ush o othe soft nylon
b istled b ush.
A g ound fault inte upte
ci cuit is ecommended to
p otect you CENTREX
3000 Toilet f om powe
su ges that could cause
you heating system to
malfunction.
You the mostat and fan a e
the two constantly moving
pa ts on the unit, and so a e
the most likely to fail.
Both a e easy to eplace.
If you eve emove the unit
fo cleaning, DO NOT use a
wate hose a ound the base
of the unit.
Powe su ges can cause
the fuse to blow. If this is a
possibility in you a ea, a
su ge p otecto is e-
commended.
Sc ub d um sc een with a
wi e b ush.
D um should neve be mo e
than ½ full.

Basic Maintenance Inst uctions
Ult a low flush toilet and CENTREX 3000 Units
These inst uctions a e not to eplace the owne ’s manual, but a e intended as simple inst uctions fo
daily use.
USING THE TOILET
Deposit you toilet pape , step on the foot pedal to flush, close the lid and walk away…you job is
done. If you plan on making a mo e substantial deposit and would like mo e wate in the bowl, simply
lift the foot pedal up and the bowl will fill. When you have the desi ed amount of wate , let the pedal
d op back in place and do what you have to do.
EVERY OTHER DAY
Tu n the handle to mix and ae ate the compost. If the toilet is being used p edominantly fo u ination,
be su e to add at least one cup of bulking mixtu e (added at the composting unit) pe ave age amount
of use s pe day. At the composting unit (not the flush toilet), open the access po t to the d um. Add
Compost Su e at the ate of one cup pe pe son pe day, so, if the e a e two people staying, you
would add 4 cups of Compost Su e all at once (2 people x 2 days = 4cups). To avoid messy waste
pipe obst uctions, Compost Su e should always be added at the composting unit, not the flush toilet.
G asp the c ank handle and tu n in a clock-wise di ection fo 10 complete tu ns of the d um . Keep in
mind that one evolution of the d um = 7 complete tu ns of the handle. When the d um has been
tu ned the equi ed amount of tu ns, tu n the handle counte clockwise until you feel esistance on the
handle. THIS IS REALLY IMPORTANT! By tu ning the handle counte clockwise, you a e cente ing
the opening in the d um unde the waste pipe. To ensu e that the e a e no messy accidents, do not
skip this step!!
CHECK THE VOLUME OF THE BIO-DRUM™
To speed up composting, add one scoop of Mic obe Mix eve y second week, and ensu e that the
d um is not mo e than ½ full.
ATTENTION: the Cent ex 3000 elect ic model must emain plugged in to an
elect ical outlet continuously to function in an odo less fashion. If you will be
away f om the esidence whe e the composting toilet is installed fo longe than
th ee days, the powe may be disconnected while the composting toilet lays
do mant.
- 18 –

ACCESSORY ITEMS FOR THE CENTREX 3000 TOILET
SUN-MAR has developed a numbe of composting accesso y items ove the yea s in esponse to
f equent equests f om use s. These items may se ve to imp ove composting speeds unde some
ci cumstances.
Note: Use “Compost Sure Blue” for optimum results.
Name Desc iption Containe
“Compost
Quick”
Cleans and accele ates the composting action of you Sun-Ma
composting toilet. Compost Quick is a specially selected
natu al enzyme solution that also assists in the decomposition
of waste. 100% natu al and non-toxic. 500ml(16oz) Bottle
“Mic obe
Mix”
100% natu al p oduct combining a blend of mic obes and
enzymes designed to sta t and accele ate composting in all
Sun-Ma toilets. 500g (16oz) Ja
“Compost
Su e
Blue”
Fo use with all Sun-Ma low wate CENTREX systems.
Compost Su e Blue’s mix en iches compost with o ganic ca bon
and also p ovides d ainage of excess liquid ensu ing compost
emains ae obic and odo -f ee . 30 Lit e/8 Gallon Bag
DC Vent
Kit
Kit equi ed fo conve sion of elect ic units to also ope ate
without elect icity o 12 volt DC mode. Includes a 12 volt DC
fan.
AF
Wate less
Kit
Pu chase of a SUN-MAR d y toilet necessa y. This kit will adapt
a CENTREX 3000 fo use without wate . Ideal whe e wate
supply is limited o low output is desi ed.
AC Fan
Speed
Cont ol
Designed fo elect ic units only, the cont ol kit allows use s to
adjust the speed of the fan. Ideal fo installations whe e the
toilet is used in winte applications o in bunkies whe e the toilet
may be in close p oximity to sleeping qua te s.
12 Volt 2.4
Watt Fan
Designed fo use in the 4” non-elect ic vent only. This fan
inc eases the ai flow in non-elect ic units to help ove come
down d aft.