PHAM NEWS | JUNE 2025 Light Commercial Heating Delivering uninterrupted service


Armstrong has introduced new larger sizes of the Design Envelope Tango, a compact, low-carbon dual pump that has been designed to provide uninterrupted service, even during maintenance. The Design Envelope Tango includes two motors and two impeller assemblies in a single casing. Integrated valves can isolate one side of the pump for service, without interrupting flow or affecting occupant comfort. New sizes are now available with motors ranging from 15 to 40 horsepower and are capable of serving applications up to 120 L/s. Design Envelope Tango is a compact


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Last amended by: RW


Last amended on: 28 April 2025 4:07 pm Deadline: Stage: Colour: Size:


AW CMYK


patented parallel sensorless operation, increased flow turn-down and also


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solution that combines built-in parallel pumping with reduced installation costs. Because the two rotating devices share a single casing, installation requires less piping. In addition, the vertical in-line orientation means the pump is installed in the piping and does not require an inertia base. Design Envelope technology includes


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provides built-in flow metering for superior flow control. The energy-efficient design of the Tango is said to reduce operating costs by up to 80% and lifecycle costs by up to 40%. As it provides an effective alternative to full duty standby, it can also reduce embodied carbon. Users can also take advantage of Pump


Manager, a cloud-based service that provides smart analytics, diagnostics, and alerts to support HVAC system efficiency. ◼ phamnews.co.uk/625/34


HIU proves its performance under test conditions


Hydronic solutions specialist, Altecnic Ltd, part of the Caleffi Group, has revealed that its SATK32107 Heat Interface Unit (HIU) has delivered industry-leading results in the latest BESA UK HIU Test Regime. The BESA test highlights which modules


have been completed and how each unit performs against both baseline and best practice criteria. Altecnic’s HIU passed all four indirect modules and recorded eight best practice outcomes, the highest to date among all tested HIUs in the UK market. These outcomes demonstrate the


unit’s performance under real-world conditions and its alignment with the CIBSE CP1 (2020) and HNTAS standards. The results confirm that the SATK32107 not only meets today’s expectations but is futureproofed for evolving UK performance benchmarks. The HIU demonstrated excellent


Michon Limited. Tel: 0115 933 1000 michoncreative.co.uk


space heating and DHW performance with VWARTs as low as 27°C and rapid hot water response times, plus proven compatibility with low-temperature systems and heat pump-ready networks, achieving VWARTs down to 30°C.


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By reducing return temperatures and


optimising energy use, the SATK32107 reduces heat loss, enhances network efficiency, and supports the UK’s wider net zero decarbonisation strategy. MD Gary Perry comments: “This


result reflects our long-term investment in quality, standards, and transparent benchmarking. As the industry shifts toward lower temperature and heat pump-ready networks, this is the kind of independently verified performance the market needs to provide reliable, efficient and future-proofed solutions.” ◼ phamnews.co.uk/625/35


INTRODUCTORY OFFER


Commissioning included*


The new Quinta Ace


It’s the Quinta-ssential commercial boiler range www.baxi.co.uk/quinta


*


Available for products purchased, installed, and commissioned from 11/04/25 – 31/07/25. Available in UK and ROI. Terms and conditions apply.


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