Optional variable-speed pump for economical operation - The control algorithm adjusts the water ﬂow rate based on the actual system requirements and obsoletes the need for the control valve at the unit outlet. Increased energy efficiency at part load - Eurovent energy efﬁciency class (in accordance with EN14511-3:2013) C and D in cooling mode and B and C in heating mode. - The refrigerant circuit includes several compressors connected in parallel. At part load, around 99% of the operating time, only the compressors that are absolutely necessary operate. At these conditions the compressors operating are more energy efﬁcient, as they use the total condenser and evaporator capacity. - The electronic expansion device (EXV) allows operation at a lower condensing pressure (EER, COP and ESEER optimisation). - Dynamic superheat management for better utilisation of the water heat exchanger surface. - Defrost cycle optimisation (30RQ). Reduced maintenance costs - Maintenance-free scroll compressors - Fast diagnosis of possible incidents and their history via the Touch Pilot Junior control - R410A refrigerant is easier to use than other refrigerant blends.
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 algorithm prevents excessive compressor cycling and permits reduction of the water quantity in the hydronic circuit (Carrier patent) - Hydronic module with integrated pressure transducers allowing measurement of the water pressure at two points, as well as measurement of the water ﬂow rate and detection of lack of water and pressure. This considerably reduces the risk of problems such as frost accumulation on the water heat exchanger. - Automatic compressor unloading in case of abnormally high condensing pressure. If an anomaly occurs (e.g. fouled air heat exchanger coil, fan failure) AquaSnap continues to operate, but at reduced capacity. 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.
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, COP and ESEER) Leak-tight refrigerant circuit - Brazed refrigerant connections for increased leaktightness - Reduction of leaks due to reduced vibration levels and elimination of capillary tubes (TXVs) - Veriﬁcation of pressure transducers and temperature sensors without transferring refrigerant charge.
Remote operating mode with volt-free contacts (standard)
A simple two-wire communication bus between the RS485 port of the AquaSnap and the Carrier Comfort Network offers multiple remote control, monitoring and diagnostic possibilities. Carrier offers a vast choice of control products, specially designed to control, manage and supervise the operation of an air conditioning system. Please consult your Carrier representative for more information on these products. - Start/stop: Opening of this contact will shut down the unit - Dual set point: Closing of this contact activates a second set point (example: unoccupied mode) - Water pump 1 and 2 control (contacts supplied with the hydronic module option)*: These outputs control the contactors of one or two water heat exchanger water pumps - Alarm indication: this volt-free contact indicates the presence of a major fault that has led to the shutdown of one or two refrigerant circuits - Demand limit 1 and 2: Closing of these contacts limits the maximum unit capacity to three predeﬁned values - User safety: This contact can be used for any customer safety loop, closing of the contact generates a speciﬁ