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    SKU: SMC-3000 A/F 240
    Centrex 3000 A/F 240 — the largest electric waterless underfloor split system in the range, built for high seasonal demand and medium residential use with maximum compost volume.

    Choose the Product options below

    *

    Please select the primary pedestal (toilet fixture) option you would like to accompany your composting system.

    Note; that the Urine-Diversion (UD) pedestal option is most suitable where there is high use in peek or large family gatherings.

    Note; that with Urine Diversion, it is recommended that the compost mass is kept wet to avoid the pile drying out. Consider getting the hand-held bidet sprayer accessory for facilitating the hydration of compost.

    A hardwearing Nano-Ceramic Non-Stick Coating is applied onto the inner side of the Pedestal (toilet fixture) for maximum cleanliness.

    Note; basic cleaning will still be required.

    Note; non-stick is hydrophobic and repels liquids only.

    Add a wind-driven vent to create redundancy. The wind-driven vent will assist the fan under heavy wind conditions, keeping the system operational in the event of a power outage or fan failure.
    2 colours: white or black.

    Select this reducing collar to adapt the vent from 150mm to 100mm.

    Select this reducing collar adaptor to reduce the pipe further, from 100mm to 50mm. Compatible with this system.

    Note: to reduce to 50mm, the 100mm adaptor above is also required - leave selected.

    Note: systems with 50mm piping will require a mounting stay (not supplied).

    Select this reducing collar to adapt the vent from 150mm to 100mm.

    Select this reducing collar adaptor to reduce the pipe further, from 100mm to 50mm. Compatible with this system.
    Note: to reduce to 50mm, the 100mm adaptor above is also required - leave selected.
    Note: systems with 50mm piping will require a mounting stay (not supplied).

    Extend your soft connection leachate drainpipe to reach your hard connection leachate drainpipe or soak-pit/trench.

    Soft connections allow for flexible placement of the composting tank in relation to a hard connection or drain.

    The system is packed with 1 meter of 25mm leachate drainpipe as a standard.

    Extend your leachate drain via in-ground hard connection to reach your soak-pit/trench (soak-away).

    Most soak-aways should be installed 3 meters away from the foundations of the structure but this remains circumstantial to the site.

    Run your leachate drain into a soak pit (vertical soak-away) or into a trench (horizontal soak-away).

    Availability: Availability - on backorder and will be dispatched once in stock (Special order – ready in approx. 3–4 months (non-stock item sourced specially from our supplier)).
    $10,037.61 excl GST
    excluding shipping
    Estimated delivery time: Approx. 1–2 weeks (NZ-wide)
    i h
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    Availability: Special Order — enquire with WCTNZ® about current procurement timeframes.
    Sun-Mar™ largest powered waterless Centrex system

    Sun-Mar™ | Centrex 3000 — Air Flow 240

    A high-capacity powered underfloor composting system for medium-to-heavy seasonal use and medium residential waterless installations.

    The Centrex 3000 Air Flow 240 combines the longer continuous-flow BioDrum™ with a straight-fall waterless pedestal, powered heating and active ventilation.

    Holiday use
    Up to 11
    Stated seasonal capacity
    Residential
    Up to 4
    Stated residential capacity
    Heater
    370W
    Thermostatically controlled
    Fan
    30W
    Sun-Mar™ turbofan
    Product background

    Maximum Centrex capacity with a waterless pedestal

    The longer Centrex 3000 chamber provides greater compost volume for larger holiday houses, cabins and medium residential applications.

    How it works

    Receive, progress and collect

    Stage 1 Receive

    Waste falls directly from the waterless pedestal into the longer Centrex 3000 BioDrum™ below the floor.

    Stage 2 Compost & progress

    Rotation mixes the compost and progressively moves it along the drum while the 370W heater and 30W fan support airflow and evaporation.

    Stage 3 Collect

    Material reaches the auto-drop end of the drum and falls into the separate collection housing for removal.

    Core product details

    Powered evaporation and continuous-flow composting

    • 370W thermostatically controlled heater.
    • 30W Sun-Mar™ turbofan.
    • 2-inch vent stack.
    • Waterless straight-fall pedestal pathway.
    • Continuous-flow 3000-series BioDrum™.
    • 1-inch drain hose provides overflow protection.
    Air Flow note: the waterless pedestal must be positioned correctly above the Centrex chamber because waste enters by gravity.
    Certification

    NSF, electrical and AS/NZS certification evidence

    NSF/ANSI 41 — Non-Liquid Saturated Treatment Systems

    The supplied Sun-Mar™ information identifies the applicable NSF performance pathway.

    Electrical features are identified as CSA certified under file number LR55925.

    AS/NZS 1546.2:2008 — Waterless composting toilets

    SAI Global Licence Number: SMKH25591

    NSF: What you need to know about composting toilets

    NSF composting toilet information

    WCTNZ® is an authorised New Zealand supplier of Sun-Mar™ composting toilet systems. Local support is available for system selection, installation information, consumables and after-sales requirements.

    Air Flow or Micro Flush?

    Choose Air Flow where a fully waterless straight-fall pedestal suits the building. Choose Micro Flush where greater pedestal-position flexibility is required.

    Before you choose, think:

    1. Your place — tiny home, bach, family home, RV, or public site

    2. Your building — whether it suits a self-contained or split composting toilet system

    3. Your needs — user numbers, maintenance preferences, and how off-grid you want to be

    To narrow it down properly, start with the Composting Toilet Guide.

    Open the WCTNZ® Selector Guide »