Daikin EWAPC11AJYNN [20/41] Chillers r 407c ewap ajynn
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Daikin EWAPC11AJYNN [20/41] Chillers r 407c ewap ajynn

Daikin EWAPC11AJYNN [20/41] Chillers r 407c ewap ajynn
• Chillers • R-407C • EWAP-AJYNN
1
4
• Hydronic Systems • Chillers
20
4 Options
OPTIONS
100% total heat recovery (R) - Produced with shell and tube heat exchangers to obtain hot water up to +55° C. The heat exchangers are installed on
the refrigerant circuits in parallel to the condenser coils, to remove all the condensation heat.
25% partial heat recovery (D) - Produced with plate to plate heat exchangers installed between the compressor discharge and the condenser coil. Hot
water can be produced up to a maximum temperature of +55°C.
Compressor thermal overload relays - Safety devices against compressor motor overloading in addition to the normal protection envisaged by the
electrical windings.
Ammeter and voltmeter - Digital meters of unit drawn amperes and voltage values, installed on the electrical control panel.
Absorbed Current Limit / Display - This options allows to monitor the chiller absorbed current with possibility to set a limit value. This option excludes
the Demand Limit.
Condenser power factor correction - Installed on the electrical control panel to ensure it conforms to the plant rules. (McQuay advices maximum 0,9).
100 Pa lift fans - For all the applications where a higher fans lift is required (not available for LN, XN, XXN versions and not compatible with fan speed
modulation options).
250 Pa lift fans - For all the applications where a higher fans lift is required (not available for LN, XN, XXN versions and not compatible with fan speed
modulation options).
Fan speed control device - This device allows the continuous variation of the fan speed, modifying the air flow according to the external temperature
conditions. It allows the unit working with air temperature down to -18°C.
Fan Silent Mode - The microprocessor clock switches the fan at low speed according to the client setting (i.e. Night & Day), providing that the ambient
temperature/condensing pressure is allowing the speed change. It allows a perfect condensing control down to -18°C
Speedtrol - Continous fan speed modulation on the first fan of each circuit. It allows the unit working with air temperature down to -20°C.
Condenser coil guards - Metal protection guards fixed on all the external surface of the condenser coils.
Evaporator area guards - Metal protection guards around evaporator area.
Cu-Cu condensing coils - To give better protection against corrosion by aggressive environments.
Cu-Cu-Sn condensing coils - To give better protection against corrosion in aggressive environments and by salty air.
Alucoat condensing coils - Fins are protected by a special acrylic paint with a high resistance to corrosion.
20mm thicked evaporator insulation - Useful in really heavy operating conditions.
Flow switch - Supplied separately to be wired and installed on the evaporator water piping (by the customer).
Suction line shut off valve - Suction shut-off valve installed on the suction port of the compressor to facilitate maintenance operation.
Spreader bars - Facilitate the lifting of the units keeping the ropes away from the unit's casing.
Rubber type antivibration mounts - Supplied separately. Ideal to reduce the vibrations when the unit is floor mounted.
Witness tests - The units are normally tested at the test bench prior to the shipment. On request, a second test can be carried out, at customer's
presence, in accordance with the procedures indicated on the test form. (Not available for units with Glycol mixtures).
Soft start - Electronic starting device to reduce inrush current. An overload protection is included (no need of compressors thermal relays).
Over / Under Voltage - Phase monitor to control the minimum and maximum voltage value.
Water circulation pump - The pump is unit mounted. Hydronic kit consists of: one centrifugal pump direct driven, expansion tank, water feed circuit
with pressure gauge, safety valve. The pump motor is protected by a circuit breaker installed in control panel. The kit is assembled and wired to the
control panel.
Two water circulation pumps - Pumps units are unit mounted. Hydronic kit consists of: two centrifugal pumps direct driven, expansion tank, water feed
circuit with pressure gauge, safety valve, check valves, shut-off valves. The pumps motors are protected by circuit breakers installed in control panel.
The kit is assembled and wired to the control panel.
NOTE
1 Spring type isolators (usually used with reciprocating chillers) are not recommended for EWAP-AJYNN chiller because screw compressors do not
generate low frequency vibrations.

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