AHI Carrier Catalog | Page 435

AIR-TO-WATER HEAT PUMPS  30RQ 017-040 Features and advantages Easy and fast installation ■■ Increased energy efficiency at part load -- Eurovent energy efficiency class A and B (in accordance with EN14511-3:2013) in cooling and heating mode. The exceptionally high energy efficiency of the AquaSnap unit is the result of a long qualification and optimisation process. ■■ Reduced maintenance costs -- Maintenance-free scroll compressors -- Fast diagnosis of possible incidents and their history via the Pro-Dialog+ control -- R410A refrigerant is easier to use than other refrigerant blends Environmentally balanced ■■ Non-ozone depleting R410A refrigerant -- Chlorine-free refrigerant of the HFC group with zero ozone depletion potential -- Very efficient - gives an increased energy efficiency ratio (EER) ■■ Leak-tight refrigerant circuit -- Brazed refrigerant connections for increased leak-­ tightness -- Verification of pressure transducers and temperature sensors without transferring refrigerant charge Superior reliability ■■ State-of-the-art concept -- Cooperation with specialist laboratories and use of limit simulation tools (finite element calculations) for the design of the critical components, e.g. motor supports, suction/discharge piping etc. ■■ Auto-adaptive control -- Control a lgorithm prevents excessive compressor cycling and permits reduction of the water quantity in the hydronic circuit (Carrier patent) ■■ Exceptional endurance tests -- Corrosion resistance tests in salt mist in the laboratory -- Accelerated ageing test on components that are submitted to continuous operation: compressor piping, fan supports -- Transport simulation test in the laboratory on a vibrating table. CONTROLS ■■ Integrated hydronic module -- High-pressure centrifugal water pump -- Water filter protecting the water pump against circulating debris -- High-capacity membrane expansion tank ensures pressurisation of the water circuit -- Overpressure valve, set to 4 bar -- Pressure gauge to measure the system pressure. -- Automatic purge valve positioned at the highest point of the hydronic module to remove air from the system. -- Thermal insulation and frost protection down to -10°C, using an electric resistance heater and pump cycling. -- Integrated water fill system to ensure correct water pressure (option) ■■ Physical features -- With its small footprint the unit blends in with any architectural styles. -- The unit is enclosed by easily removable panels, covering all components (except air heat exchanger and fans). ■■ Simplified electrical connections -- A single power supply point (power supply without neutral available as an option and in standard for units size 40kW) -- Main disconnect switch with high trip capacity -- Transformer for safe 24 V control circuit supply included ■■ Fast commissioning -- Systematic factory operation test before shipment -- Quick-test function for step-by-step verification of the instruments, electrical components and motors. Economical operation HEATING ■■ Compressors -- Low-noise scroll compressors with low vibration levels -- The compressor assembly is supported by anti-­ vibration mountings ■■ Air heat exchanger section -- Vertical air heat exchanger coils -- The latest-generation low-noise fans are now even quieter and do not generate intrusive low-frequency noise -- Rigid fan installation for reduced start-up noise. AIR TREATMENT Quiet operation C A R R I E R 2 0 1 6 / 2 0 1 7 435