Design Envelope 4312 Twin Pumps

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Design Envelope 4312 Twin Pumps

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Design Envelope 4312 Isometric View
Design Envelope 312 Front

  • Summary
  • Applications

    HVAC-system pumping; general purpose pumping; industrial/process pumping (water or glycol based)

  • Description

    Pipe-mounted 2-pump unit with integrated intelligent controls for space-saving installation, superior energy performance, and full redundancy during operation. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations.

  • Materials
    • Cast iron or ductile iron casing
    • Cast iron or bronze impeller
  • Configuration

    On-board Intelligent Variable Speed controls with Sensorless control. Controls enclosure UL type 12 or UL type 4X (outdoor applications). High-efficiency NEMA premium motors available. Inside single-spring mechanical seals.

  • Performance Range

    Up to 80 L/s (1250 USgpm) flow and 75 m (250 ft) head 

  • Temperature

    121oC (250oF)

  • Power

    0.75 kW to 30 kW (1 hp to 40 hp)

  • Size

    50 mm to 150 mm (2" to 6”)

Lowest installed cost

  • Vertical In-line design eliminates the need for inertia bases, housekeeping pads, and flex connectors and reduces piping requirement
  • 2-pump casing for reduced footprint
  • Integrated intelligent controls eliminate procurement, installation (incl. wiring), calibration and upkeep of differential pressure sensors
  • Superior energy performance qualifies for significant cost recovery under utility and government rebate programs
Design Envelope

Lowest installed cost. Lowest operating cost.

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Lowest operating cost

  • Integrated intelligent controls – combined with perfect component match-up and tuning – for up to 75% in energy savings over traditional constant speed and variable frequency operated pumping installations
  • Advanced seal design for zero lubrication and seal adjustments
  • Shorter pipe runs for reduced system friction
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Lowest environmental cost

  • 75% decrease in energy consumption reduces operational greenhouse gas emissions at equal ratio
  • Elimination of inertia bases, housekeeping pads, flex connectors and superfluous piping avoids all procurement related environmental impacts (material, energy, carbon)
  • Equipment downsizing mitigates environmental impacts associated with procuring unnecessarily large equipment
  • Integrated Twin design packs and ships more economically for less packaging waste compared to loose component shipping and assembly

Sustainability

Sustainability

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Lowest project and operating risk

  • Integrated intelligent controls for fast and easy commissioning as well as reduced radio frequency interference/ improved electromagnetic compatibility
  • Advanced seal design for zero lubrication and seal adjustments
  • Single source-responsibility for optimum design and field support
  • Twin design for full redundancy in case of emergency or routine servicing



Sainsbury's

Case study: Storing food, moving heat

Sainsbury's is saving 30% on heating and cooling costs using a geothermal heat exchange system.
»

Learn More

(PDFs)

Design Envelope Pumps - solution outline

Design Envelope Twin Pumps - solution outline

Armstrong Design Envelope - FAQs

Variable frequency drives and the use of bypasses - fact sheet

ECOnomics - brochure

ECOnomics - brochure

Energy Audit - brochure (India)


Submittals

(PDF)



Installation & Operating Instructions

(PDF)

Replacement parts

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