Lync, a Fort Worth, Texas (U.S.)-based brand launched in April by Watts Water Technologies has unveiled CO2 (R744) heat pump water heaters for new and retrofit commercial applications, among the few such water heaters available in North America.
The Aegis-branded units are designed for new and retrofit multifamily housing and gyms, as well as industrial, hospitality, education and healthcare applications.
Aegis A is an air-sourced model that produces hot water up to 185°F at air temperatures as low as -4°F (-20°C). Aegis W is a water-sourced model that also produces hot water up to 185°F, but at air temperatures down to 14°F (-10°C). Neither model requires supplemental heat.
“By using a natural refrigerant (CO2), Aegis provides an important, cost-effective and timely solution for domestic hot water systems that easily meet increasingly stringent decarbonization and environmental protection initiatives across the nation,” says Andrew Macaluso, Product Manager at Lync.
Other CO2 heat pump water heaters available in North America include units from Japanese manufacturer Mayekawa, which can produce hot water up to 194°F, and units from ECO₂ Systems, which can deliver hot water up to 150°F (65°C). The Mayekawa units are used by the Alaska SeaLife Center in Seward, Alaska (U.S.) while the ECO2 Systems units are employed by apartment buildings and homeowners throughout the U.S.
Wide operating range
The Aegis heat pumps operate over a wide range of ambient conditions – from -4°F (-20°C) to 113°F (45°C) – providing a broader operating range than HFC-based systems, said Lync, adding that the Aegis units offers a Coefficient of Performance (COP) of 3.0 – 5.0 on average year-round. The Aegis A unit also has a “cool recovery” option to simultaneously produce cold and hot water, further increasing COP.
The Aegis heat pump water heaters also provide higher capacities and take up less space than most commercial heat pump water heaters, said Lync.
Remote operation of the Aegis heat pump water heaters is available through a building automation system (BAS). Facility managers can monitor unit status in real time, record operational data, check for faults, and change set point and operating modes through the BAS.
The Aegis A model offers an advanced defrost cycle with electric coil, eliminating the need for reverse operation to defrost. Additionally, an optional coil coating is available to meet environmental regulations for coastal areas.
The Aegis W model can utilize source water from a cooling system, increasing the performance of both systems.
By using a natural refrigerant (CO2), Aegis provides an important, cost-effective and timely solution for domestic hot water systems that easily meet increasingly stringent decarbonization and environmental protection initiatives across the nation.
“By using a natural refrigerant (CO2), Aegis provides an important, cost-effective and timely solution for domestic hot water systems that easily meet increasingly stringent decarbonization and environmental protection initiatives across the nation.”
Andrew Macaluso, Lync
