Eljen Mantis M5 Series Installation And System Design Manual

Wastewater systems
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TM
System Design & Installation Manual
Vermont
November 2015
CORPORATION
www.eljen.com
Innovative Environmental Products & Solutions Since 1970

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Summary of Contents for Eljen Mantis M5 Series

  • Page 1 System Design & Installation Manual Vermont November 2015 CORPORATION www.eljen.com Innovative Environmental Products & Solutions Since 1970...
  • Page 2: Table Of Contents

    Fig. 10 Mantis M Series Pressure Distribution – Orifice Layout Fig. 11 Mantis Series Venting Diagram Fig. 12 Mantis Series 2” By-Pass Line Fig. 13 Mantis Series 2” By-Pass Line, Close Up 2015 Vermont Mantis M Design & Installation Manual Page 2 www.eljen.com...
  • Page 3: Glossary Of Terms

    This can be accomplished by using a mechanical or hand methods. Specified Sand between the modules must be stabilized using a tamping rod. Please contact Eljen Corporations Technical Services Department if more information is needed.
  • Page 4: Mantis M 5 Series General Description

    Mantis M General Description Note: To receive design standards for specially engineered dosing systems or commercial systems, contact Eljen’s Technical Resource Department at 1-800-444-1359. Mantis M series systems must be designed and constructed according to this Design & Installation Manual and the State of Vermont Environmental Protection Rules, Chapter 1, effective September 29, 2007 (hereinafter the Regulations).
  • Page 5: Table 2 Mantis M 5 Trench Sizing Table

    5.1 units, divide by 10 ft² per unit and round up to the nearest whole number of units. 5. The minimum number of bedrooms for residential designs shall be 2 bedrooms unless otherwise dictated by the regulations. 2015 Vermont Mantis M Design & Installation Manual Page 5 www.eljen.com...
  • Page 6 5.1 units, divide by 10 ft² per unit and round up to the nearest whole number of units. 5. The minimum number of bedrooms for residential designs shall be 2 bedrooms unless otherwise dictated by the regulations. 2015 Vermont Mantis M Design & Installation Manual Page 6 www.eljen.com...
  • Page 7: General System Information

    Please refer to the Vermont Wastewater System & Potable Water Supply Rules for more information. 1.2 NON-RESIDENTIAL BUILDINGS & RESIDENTIAL INSTITUTIONS: Commercial systems require different sizing and design criteria as compared to residential systems. Please contact Eljen’s Technical Resource Department at 1-800-444- 1359 for more information on commercial systems.
  • Page 8 State regulations require that the system is upsized by 25% NOTE: Eljen recommends the use of septic tank outlet effluent filters on all systems, especially on those systems that a garbage disposal is installed, even if the tanks design capacity has been increased. Filters with higher filtration are recommended for systems with garbage disposals.
  • Page 9 6" SPECIFIED SAND 12" 24" 24" 36" 6" MIN 6" MIN FIGURE 3: MANTIS M PLAN VIEW MANTIS 5.2 MANTIS 5.1 60" 8" 4" 60" 8" 4" 24" 12" 2015 Vermont Mantis M Design & Installation Manual Page 9 www.eljen.com...
  • Page 10: Systems For Level Sites

    The minimum separation shall be 4’ of naturally occurring, undisturbed soil between 3.2 TRENCH ROW SPACING: adjacent absorption trenches. The Mantis M units and Specified Sand must be installed level at their design elevations. 2015 Vermont Mantis M Design & Installation Manual Page 10 www.eljen.com...
  • Page 11: Trench Installation Guidance

    Divert surface runoff with diversion ditches or berms. Finish grade to prevent surface ponding. Seed or sod excavated areas to protect against erosion. Do not drive or pave over the absorption area. 2015 Vermont Mantis M Design & Installation Manual Page 11 www.eljen.com...
  • Page 12 SPECIFIED SAND SPECIFIED SAND 6" 6" 24" 12" FIGURE 5: MANTIS M MULTIPLE TRENCH PLAN VIEW SPECIFIED SAND DISTRIBUTION BOX SEPTIC TANK 6" PER DESIGN NATIVE SOIL PER DESIGN 2015 Vermont Mantis M Design & Installation Manual Page 12 www.eljen.com...
  • Page 13: Bed Systems Installation Guidance

    Divert surface runoff with diversion ditches or berms. Finish grade to prevent surface ponding. Seed or sod excavated areas to protect against erosion. Do not drive or pave over the absorption area. 2015 Vermont Mantis M Design & Installation Manual Page 13 www.eljen.com...
  • Page 14 FIGURE 7: MANTIS M BED SYSTEM PLAN VIEW SPECIFIED SAND D-BOX PER DESIGN 6" PER DESIGN Note: Units distal ends should not be tied together for sloped bed configurations. 2015 Vermont Mantis M Design & Installation Manual Page 14 www.eljen.com...
  • Page 15: Mound System Installation Guidance

    10. Begin placing Specified Sand between the Filter Support Modules and to the sides of the units. Specified Sand must be placed lightly and may be accomplished with a backhoe or other suitable equipment. DO NOT dump full loads of Specified Sand directly on the units. 2015 Vermont Mantis M Design & Installation Manual Page 15 www.eljen.com...
  • Page 16 Divert surface runoff with diversion ditches or berms. Finish grade to prevent surface ponding. Seed or sod excavated areas to protect against erosion. Do not drive or pave over the absorption area. 2015 Vermont Mantis M Design & Installation Manual Page 16 www.eljen.com...
  • Page 17: Table 3 Mantis M 5 Bed Sizing Table

    PLOW OR "TILL" NATIVE MATERIAL PER STEP 4 12" MIN OF MOUND INSTALLTION GUIDELINES PER CODE NOTE: Elevated mound systems require a minimum of 12 inches of Specified Sand below the units. 2015 Vermont Mantis M Design & Installation Manual Page 17 www.eljen.com...
  • Page 18: Pumped System Guidance

    4" DIAMETER PERFORATED PIPE HOLES ARE AT 12, 5 & 7 O'CLOCK ENSURE LPP ORIFICE IS NOT POINTING DIRECTLY INTO A 12 O'CLOCK HOLE LOW PRESSURE PIPE (SIZE PER DESIGN) 2015 Vermont Mantis M Design & Installation Manual Page 18 www.eljen.com...
  • Page 19: System Ventilation Guidance

    D-box back to a knockout or riser on the septic tank or pump chamber. This maintains the continuity of airflow from the field. FIGURE 11: MANTIS M SERIES VENTING DIAGRAM SHRUB MOUNDED BACKFILL OVER UNITS CLEAN BACKFILL FINISHED GRADE 2015 Vermont Mantis M Design & Installation Manual Page 19 www.eljen.com...
  • Page 20 OR SEPTIC TANK 6" PER DESIGN SERIES 2” BY-PASS LINE, CLOSE UP FIGURE 13: MANTIS M MIN 2" DIA BY- PASS AIR LINE PUMP D-BOX OUT TO SYSTEM TANK SEPTIC TANK 2015 Vermont Mantis M Design & Installation Manual Page 20 www.eljen.com...
  • Page 21: Recommended Notes On Design Plans

    Pumped systems shall have an oversized distribution box utilizing a velocity reduction tee or baffle.  Eljen mandates venting when the system will have more than 18” of cover material as measured from the top of the unit to finished grade.
  • Page 24 In the mid-1980s, we introduced our Geotextile Sand Filter products for the passive advanced treatment of onsite wastewater in both residential and commercial applications. Today, Eljen is a global leader in providing innovative products and solutions for protecting our environment and public health.

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