Daikin EWYT215B-XSA2 [10/75] Mechanical options on request

Daikin EWYT350B-XLA2 [10/75] Mechanical options on request
10 | 75
OPTIONS
In order to operate in Master/Slave mode an additional probe (PT1000 or NTC10K) must be installed on the
common line of the plant and connected to the master unit. The additional probe is not provided by the factory.
Master/Slave can manage units selected with pump on board (fix speed pumps). Note: check valves must be
installed at the outlet of each unit.
Master/Slave can also manage the start and stop of external pumps (not provided by factory). In this case, the
power supply of external pumps is not provided by the unit.
Mechanical Options On request
Discharge line shut-off valve (opt. code 61 Double V Coil units only)
Installed on the common discharge pipe of the compressors to facilitate maintenance operation (one discharge
valve per refrigerant circuit).
Suction line shut-off valve (opt. code 62 Double V Coil units only)
Installed on the common suction pipe of the compressors to facilitate maintenance operation (one suction valve
per refrigerant circuit).
Fans circuit breakers (opt. code 96) Opt. incompatibility 99A
Safety devices that, added to the standard protection devices, protect fan motors against overload and
overcurrent.
Water filter (opt. code 115)
The water filter removes impurities from water by means of a fine physical barrier. It must be installed on the
water pipe connceted to the heat exchanger inlet. The filter is shipped loose together with two victaulic joints
and two counter pipes to be welded on the plants. NOTE: The installation of the filter is mandatory.
Partial Heat Recovery (opt. code 03A)
A plate to plate heat exchanger for each refrigerant circuit is installed in series to the Air Side Heat Exchanger
coil. There is no switch nor solenoid valve in the circuit, thus compressor discharged refrigerant is always flowing
through the heat recovery exchanger and hot water production is always available while the unit is providing
cooling. During the operation in heat recover the Air Side Heat Exchanger coils provides the sub-cooling ensuring
the right amount of liquid at the inlet of the expansion valve. The unit controller manages the condensing
temperature set point in order to maximize the cooling effect and amount of energy recovered.
The amount of heat recovered is about the 15/20% (according to the operating conditions) of the total heat
rejection of the unit. The unit performs the control on the recovery circuit, based on the return water
temperature to the unit. Heat recovery capability is subject to cooling load demand (if no cooling demand is
present then no heat recovery is available) - Opt. incompatibility 134, 135, 136, 137, 120e, 120f, 120g, 120h,
120i, 120j, 120k, 120l.
Brine Version (OP. code 08)
For operation with temperature at the outlet of the evaporator below +4°C the unit must operate with glycol
mixture (with ethylene or propylene glycol) and the Brine Version option must be selected.
Evaporator flange kit (opt. code 21) Opt. incompatibility 20
High pressure side manometers (opt. code 63)
Low pressure side manometers (opt. code 64)
Double pressure relief valve with diverter (opt. code 91)
Cu-Cu Condenser coil (opt. code 45)
To give better protection against corrosion by aggressive environments. Not available for parallel coil units - Opt.
incompatibility 46, 49, 117.
Cu-Cu-Sn Condenser coil (opt. code 46)
To give better protection against corrosion in aggressive environments and by salty air. Not available for parallel
coil units - Opt. incompatibility 45, 49, 117.
Blygold Coil Treatment (opt. code 117) - It is a Polyurethane coating impregnated with metallic pigment
which provides a long lasting corrosion protection to Air Side Heat Exchanger fins coils; it is UV resistant, flexible,
heat conductive, chemical resistant to aggressive environments. Opt. incompatibility 45, 46, 49.

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