Carrier launches new water-to-water heat pump

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Published: 10 July 2019


Carrier has launched a new water-to-water heat pump for harnessing energy from rivers, lakes and industrial process applications that can deliver high temperature water up to 65 degrees Celsius for sanitary use or radiator heating.

The Eurovent-approved Carrier AquaSnap 61WG monobloc water-to-water heat pump is available in six sizes with heating capacities ranging from 29kW to 235kW at typical water conditions of 30/35 degrees Celsius, or 26kW to 200kW at higher temperature water conditions of 55/65 degrees Celsius.
Carrier says it is designed for medium to large commercial applications requiring high temperature sanitary hot water, such as hotels, hospitals, universities and leisure facilities. Alternatively, it can be used for heating with traditional radiators appropriately sized for up to 50 degrees Celsius, in line with current industry best practice guidance.

The heat pump is designed to replace or augment traditional gas boilers, or for use off-grid where buildings are currently reliant on oil-fired or electric heating. The system has a Seasonal Coefficient of Performance (SCOP) of up to 5.05 (at 55 Celsius). This means that over a typical operating season, it can deliver more than five times the electrical power it consumes in the form of heating energy as a result of harnessing and upgrading low level waste heat.

Easy installation
David Dunn, Carrier UK managing director of sales, said: "There are many opportunities in the UK for harnessing energy contained in natural water sources or from output from industrial processes. However, it is technically challenging to ensure the low level heat from these sources can be upgraded sufficiently to high temperature hot water for safe use in sanitary applications. The new Carrier heat pump achieves this and opens the way for large-capacity, commercial-scale renewable projects that weren't previously possible. This is obviously good for the environment and at the same time can potentially save building owners and end users on running costs.

"In addition, because the new heat pump is based on a compact all-in-one monobloc design with a built-in hydronic module, installation is quick and easy, making life straightforward for the installer on site."

The heat pump is controlled via Carrier’s Touch Pilot Junior, which has an intuitive colour touchscreen interface, and includes advanced communication technology, including web connectivity and alarm notification via email as standard.

For even greater efficiency, the heat pumps can be equipped with one or two variable-speed pumps to save up to two-thirds of the pumping energy costs during part-load operation and stand-by periods.

Other options include soft start, for use on sites where electrical power is limited, a low noise version for use in sensitive applications such as healthcare and universities, and an external temperature sensor for use in weather compensation set-point control for even greater efficiency.

The AquaSnap 61WG is optimised for high temperature heating and hot water applications (above 50 degrees Celsius). For lower temperature applications, such as underfloor heating (around 35 degrees Celsius), the Carrier AquaSnap 30WG heat pump is also Eurovent certified.