HEATING
Features and advantages
Low sound level
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Coil section with fixed speed fans ( 30RQM models ): --
Coils in V-shape with an open angle , allowing quieter air flow across the coil
-Low-noise -
4 th generation Flying Bird fans , made of a composite material ( Carrier patent )
-- Rigid fan installation for reduced noise ( Carrier patent ).
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Coil section with Greenspeed ® variable-speed fans ( 30RQP models recommended by Carrier for even quieter operation ):
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Exceptional acoustic signature during part-load operation through smooth fan speed variation .
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Specific control functions or features to reduce noise level during night or unoccupied periods :
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Night time sound control with capacity and fan speed limitation
-- Low-noise scroll compressors with low vibration level
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The compressor assembly is installed on an independent chassis and supported by flexible anti-vibration mountings .
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Dynamic suction and discharge piping support , minimising vibration transmission ( Carrier patent )
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Acoustic compressor enclosure , reducing radiated noise emissions ( option ).
Fast and easy installation
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Compact design --
The AquaSnap units are designed to offer compact dimensions and low weight for easy installation .
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Integrated hydronic module ( option ) --
Low or high-pressure water pump ( as required )
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Single or dual pump ( as required ) with operating time balancing and automatic changeover to the back-up pump if a fault develops
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Water filter protecting the water pump against circulating debris
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Pressure transducers for direct numerical display of the water flow rate and water pressures
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Thermal insulation and frost protection down to -20 ° C , using an electric resistance heater ( option )
-- High-capacity membrane expansion tank ( option ).
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Integrated hydronic module with Greenspeed ® variable-speed pump ( option recommended by Carrier )
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Easy and fast electronic setting of the nominal water flow at unit commissioning thus eliminating the water flow control valve adjustment
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Automatic control of the pump speed based on constant speed , constant pressure difference or constant temperature difference .
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Simplified electrical connections --
A single power supply point without neutral
-- Main disconnect switch with high trip capacity
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24 V control circuit without risk from a transformer included .
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Fast unit commissioning --
Systematic factory test before shipment
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Quick-test function for step-by-step verification of the instruments , electrical components and motor .
Reduced installation costs
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Optional Greenspeed ® variable-speed pump with hydronic module ( option recommended by Carrier )
-- Elimination of the water flow control valve cost
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Water system design with variable primary flow ( VPF ) can provide significant installation cost savings compared with traditional constant primary-variable secondary systems ; elimination of the secondary distribution pump , etc .
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Water system design with fan coils fitted with 2-way valves instead of 3-way valves .
Environmental responsibility
■■ Non-ozone depleting R410A refrigerant
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Reduced direct warming potential ( 10 % of total equivalent warming impact ):
-- Low R410-A refrigerant charge
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Leak-tight refrigerant circuit with minimum brazed refrigerant connections
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Qualified Carrier service people for refrigerant servicing
-- ISO 14001 manufacturing site .
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Reduced indirect warming potential ( 90 % of total equivalent warming impact ):
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Reduced unit energy use ( high full- and part-load efficiency )
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Pumping energy use can be reduced up to 2 / 3 using Greenspeed ® variable-speed pump .
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