Design Envelope 4372 Tango Pumps

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Summary
Applications
HVAC-system pumping and control; general purpose pumping; industrial/process pumping and control (water or glycol based)
Description
Pipe-mounted 2-pump unit with integrated intelligent controls for space-saving installation, superior energy performance, and parallel-pumping or full redundancy operation. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations. Remote services through internet to enhance reliability and sustain optimal performance over life of pumps.
Materials
- Ductile iron e-coated casing
- Stainless steel impeller
- Sintered silicon carbide mechanical seal
Configuration
On-board Intelligent Variable Speed controls with Sensorless control. Controls enclosure UL type 12 or UL type 4X for outdoor applications. 1-10hp range standard with DEPM motors that reduce losses by more than 20% over NEMA Premium efficiency. Network capable for remote performance management services.
Performance range
Up to 900 USgpm (56 L/s) in parallel flow and 160 ft (48 m) head (composite curves available)
Temperature
250^oF (121^oC)
Power Range
0.25 hp to 10 hp (0.19 kW to 7.5 kW)
Size
1" to 3" (25 mm to 80 mm)

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Vertical In-line design eliminates the need for inertia bases, housekeeping pads, and flex connectors and reduces piping requirements
2-pump casing for reduced footprint
Integrated intelligent controls eliminate separate mounting of variable frequency drive (VFD) as well as procurement, installation (incl. wiring), calibration and upkeep of differential pressure sensor
Superior energy performance qualifies for significant cost recovery under utility and government rebate programs
Design Envelope selections frequently recommend a smaller motor and/or pump which reduces installed cost.

Controls enclosure rated for UL type 4x. Equipped with overhead weather shield to prevent icing in cold weather or overheating in direct sunlight.

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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 pump installations
Standard with Parallel Sensorless control (patent pending) to provide best-efficiency staging of both pumps for additional energy savings
Shorter pipe runs reduce system friction

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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 design packs and ships more economically for less packaging waste compared to loose component shipping and assembly

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Integrated intelligent controls for fast and easy commissioning as well as reduced radio frequency interference/ improved electromagnetic compatibility
Optional performance management for early warnings, online trending and analysis, and reports and summaries
Optional sediment filters or separators for extended seal life in contaminated systems
Single-source responsibility for optimum design and field support
Independent operation through embedded Sensorless control or in conjunction with a building automation system (BAS)
ETL Listed - conforms to UL STD 778
Certified to CSA STD C22.2 NO.108