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Sun-Mar CENTREX 2000 - User Manual

Sun-Mar CENTREX 2000
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PO-MANU0-0609XX
February 2009
Rev D6
Serial
#
________________
CENTREX 2000 FAMILY
OWNER’S MANUAL
Product Info: (905) 332-1314 Fax: (905) 332-1315 Tech. Service: (888) 341-0782
E-mail: compost@sun-mar.com 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

Questions and Answers

  • J
    Julie BennettAug 16, 2025
    What to do if Sun-Mar Toilets drum is too full?
    • T
      Tammy GibsonAug 17, 2025
      If the drum of your Sun-Mar toilet is too full, it might be because the compost wasn't emptied into the finishing drawer promptly, or kitchen/garden waste was added. Remove compost until the drum is half full or less. Rotate compost thoroughly to aerate, and add compost accelerant (Compost Quick and Microbe Mix) if available. It's also recommended to avoid adding kitchen or garden scraps.
  • A
    Amy RobinsonAug 19, 2025
    Why is waste not breaking down in my Sun-Mar Toilets?
    • R
      Richard WestAug 19, 2025
      If waste isn't breaking down in your Sun-Mar toilet, causing the drum to fill up quickly, it could be due to insufficient moisture in the compost, insufficient microbes, or the room temperature being too low. Try adding water to the bio-drum, introducing Sun-Mar Microbe Mix, and ensuring the room temperature is constantly above 55°F/13°C.
  • L
    Laurie BrownAug 22, 2025
    How to eliminate flies in Sun-Mar Toilets?
    • B
      Brent HinesAug 22, 2025
      To eliminate flies in your Sun-Mar toilet, you can use any pesticide that is used on your garden, as these are safe for your compost because they aren't anti-bacterial. Alternatively, you can completely clean out the toilet and wash the inside with soap and water.
  • M
    Michael ThompsonAug 25, 2025
    What to do if compost is too wet in Sun-Mar Toilets?
    • P
      Paige LarsonAug 26, 2025
      If the compost in your Sun-Mar toilet is too wet, it may be due to poor compost porosity or a clogged drum screen. Change the bulking material to Compost Sure Blue. You can also spray the drum screen with Compost Quick and scrub it with a wire brush.
  • N
    Nancy TranAug 27, 2025
    What to do if there are large lumps in compost in Sun-Mar Toilets?
    • A
      Andrew BridgesAug 27, 2025
      If you find large lumps in the compost of your Sun-Mar toilet, it's likely that the compost is too dry. Add 1/2 to 1 gallon of warm water to the compost to reach the appropriate moisture level. Remove or break apart any lumps you find.
  • K
    kellykingAug 30, 2025
    Why is the compost in my Sun-Mar Plumbing Product too wet?
    • K
      Kevin FrederickAug 30, 2025
      If your Sun-Mar Plumbing Product's compost is too wet, it could be due to poor compost porosity, often caused by using too much peat moss. This compacts the compost, prevents drainage, and reduces airflow. Immediately improve porosity by adding about 1/2 gallon (2 liters) of wood shavings (not anti-bacterial). For ongoing maintenance, switch to Compost Sure Blue or 100% wood shavings as your bulking material.
  • M
    Marie LeeSep 2, 2025
    How to get rid of flies in my Sun-Mar Plumbing Product?
    • D
      David SanfordSep 2, 2025
      If flies are present in your Sun-Mar Plumbing Product, it may be because the compost is too dry. Keep the compost moist. To determine the correct moisture level, shine a flashlight into the drum; the compost should have a slight gloss or shine. Another reason may be that the compost is anaerobic. If the compost smells, refer to 'Compost Remediation'. Anaerobic compost will attract flies and reduce the performance of your composting unit.
  • R
    Ronald BenitezSep 4, 2025
    Why is the compost in my Sun-Mar Plumbing Product too dry?
    • D
      Dr. Brenda FergusonSep 4, 2025
      If the compost in your Sun-Mar Plumbing Product is too dry, it could be due to several reasons. It may be that moisture isn't being added periodically, especially in cottage units, or the toilet isn't being used for urination. Insufficient microbes or a room temperature below 60F/15C can also cause dryness. Insufficient bulking material or not enough peat moss may also be the cause. Add 1/2 to 1 gallon (2-4 liters) of warm water to bring it up to the appropriate moisture level. Add Sun-Mar Microbe Mix. Install a heat source to increase the temperature above 55-60F/15C if the toilet is used regularly. Use the toilet for urination and add the correct bulking material.
  • A
    Ana SnyderSep 7, 2025
    How to handle effluent from my Sun-Mar Plumbing Product?
    • M
      Michael DavisSep 7, 2025
      To handle effluent from your Sun-Mar Plumbing Product, you can use a container that is emptied periodically, such as a water jug or small barrel, to ensure a closed-loop system. Alternatively, you can feed the effluent into a lined pit filled with gravel and sand, creating a recycling bed that also ensures a closed-loop system. Other options include feeding it into a small cesspit or 'french drain', or plumbing it into an existing septic or holding tank line, following local regulations.
  • J
    James CisnerosSep 10, 2025
    What to do if the vent stack of my Sun-Mar Plumbing Product has too many bends?
    • P
      pamelahowellSep 12, 2025
      If the 2” vent stack of your Sun-Mar Plumbing Product has too many bends or horizontal lengths, re-install the vent stack to reduce the number of bends or eliminate horizontal lengths. You can also install fresh air intakes on any competing appliances. To check ventilation, hold a lighter up to the air intake holes on the back of the unit; air should be drawn in. If not, check the venting and provide more ventilation to the room. Install the vent with minimal bends (total bends should equal no more than 360 degrees) and NO horizontal or downward slopes.

Summary

Introduction

How Your Composting Toilet Works

Explains the overall process of composting toilets and their three-chamber design.

The Composting Chamber

Details the function and operation of the primary composting chamber, including mixing and aeration.

Compost Finishing Drawer

Describes the secondary chamber where compost is isolated to finish composting.

Evaporating Chamber

Explains the chamber where excess liquid evaporates into water vapor.

Winter Use

Provides guidance on operating the unit during cold weather and preventing freezing.

Wiring Diagram

Inspection

Inspecting the unit for damage

Procedure for checking the unit for damage upon delivery before signing shipping papers.

Check Carton Contents and Familiarize Yourself with the Centrex 2000

Verifying included parts and performing initial operational checks on the unit.

Placement of Unit

Guidance on selecting an appropriate location for the composting unit, ensuring weather protection.

Installation

Rough In Dimensions

Provides key measurements for planning the installation space for the composting unit.

Included In Your Kit

Lists all components provided with the composting unit for installation.

Installing the 1 Pint Low Flush Toilet

Step-by-step instructions for installing the toilet fixture to the unit.

Pedestal and Pedal Cover Installation

Covers the assembly of the toilet's base and pedal mechanisms.

Installation Considerations for the waste pipe

Guidelines for proper waste pipe installation, slope, and length.

The 3 Waste Inlet

Details the installation of the 3-inch waste inlet assembly for compost flow.

Drain Installation

Instructions for connecting the unit's safety drains for liquid removal.

Handling Effluent

Options for managing the liquid produced by the composting process.

Vent Piping Location

Advice on positioning the vent pipe to prevent odors and ensure proper airflow.

Adjusting the fan gate(Electric and AC;DC)

How to adjust the fan gate for optimal airflow and odor control.

Vent Piping Installation

Technical guidance for installing the vent piping system, including angles and material.

Leading the vent through the roof

Instructions for safely routing the vent pipe through the roof with proper sealing.

The Diffusor

Explains the function and installation of the vent pipe diffusor for improved updraft.

Electrical Considerations (Electric and AC;DC)

Recommendations for safe electrical connections, GFI protection, and wiring.

12 Volt Fan Installation (AC;DC and NE)

Steps for installing the 12-volt fan in the vent stack for improved ventilation.

Start Up and Use

Initial System Start Up

Step-by-step guide for the initial setup and operation of the unit to establish composting.

Annual Start Up (seasonal units only)

Procedure for starting the unit at the beginning of a seasonal use period.

Periodic Check Up

Regular checks to ensure optimal performance, moisture levels, and cleanliness.

Ongoing Toilet Maintenance

Routine procedures for keeping the compost healthy, aerated, and moist.

Compost Troubleshooting

Aerobic Compost Requirements

Necessary conditions for aerobic bacteria to effectively break down waste: oxygen, moisture, carbon, warmth.

Moisture

Explains the importance of proper moisture levels (40-60%) for composting activity.

Warmth

Details how temperature affects composting activity, with slowing below 55-60 degrees F.

Characteristics of a Bad Compost

Lists signs of poor compost quality, such as lumps, muddy texture, or bad smells.

Mechanical Troubleshooting

Urine Odor Around Unit

Addresses causes and solutions for urine odor issues, often related to vent pipe condensate.

Fan has failed (110 volt) (Electric and AC;DC)

Steps for troubleshooting a failed 110-volt fan, including replacement advice.

Room where unit is located is airtight.

Discusses how an airtight room can affect unit performance and ventilation.

Occasional Urine Odor Outside

Addresses odor issues occurring outside the unit, often linked to vent stack installation.

Strong Sewage Odor Present when drum turns

Troubleshooting strong odors associated with drum rotation, usually due to anaerobic conditions.

Fan Noisy (Electric and AC;DC)

Diagnosing and resolving noisy fan issues, including rattling or vibration.

Fan Not Working (Electric and AC;DC)

Steps for diagnosing a non-functional fan, checking for debris or mechanical failure.

Liquid Buildup; Lack of Evaporation

Addresses issues of excess liquid and poor evaporation, possibly due to usage or system failure.

Overflowing Liquid From Drawer Opening

Solutions for liquid overflowing from the drawer opening, often caused by blocked drains.

Heating System Not Working (Electric and AC;DC)

Troubleshooting steps for a non-functional heating system, checking thermostat and element.

Drum Will Not Stay Vertical

Solutions for the drum not remaining in its upright position, often related to the drum locker.

Drum Will Not Turn

Troubleshooting steps when the drum cannot be rotated, due to set screw or gear issues.

Drum Door Not Opening; Closing Properly

Resolving issues with the drum door's movement, often caused by caked compost.

Waste Not Exiting Waste Pipe or Gas Bubbles at Toilet

Diagnosing and fixing problems with waste pipe blockage or gas bubbles.

Accessory Items For Composting

Warranty

Basic Maintenance Instructions

Three times a week weekly maintenance (every second day)

Routine tasks performed every second day for unit upkeep, including adding compost mix.

Monthly maintenance and emptying cycle

Procedures for monthly checks, cleaning the drum screen, and emptying components.

Getting Ready for Winter

No Winter Use

Instructions for storing the unit during periods of no winter usage, focusing on preventing drying.

Occasional Winter Use

Guidance for using the unit intermittently during winter, treating it as a holding tank.

Heavy or Residential Winter Use

Recommendations for continuous winter operation, including vent pipe insulation and heat.

Sun-Mar CENTREX 2000 Specifications

General IconGeneral
BrandSun-Mar
ModelCENTREX 2000
CategoryPlumbing Product
LanguageEnglish

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