Daikin EWAT290B-SRB1 [12/62] Options
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Daikin EWAT290B-SRB1 [12/62] Options

Daikin EWAT185B-XSA1 [12/62] Options
12/62
OPTIONS
High pressure side manometers (opt. code 63 – Mult-V units only)
Low pressure side manometers (opt. code 64 – Multi-V units only)
High and Low pressure side manometers (opt. code 127 – Single-V units only)
Double pressure relief valve with diverter (opt. code 91)
Hydronic kits:
• One centrifugal pump (Low lift) (opt. code 78)
• One centrifugal pump (high lift) (opt. code 79)
• Two centrifugal pump (Low lift) (opt. code 80)
• Two centrifugal pump (high lift) (opt. code 81)
• One centrifugal pump (Low lift) + water tank (opt. code 134)
• One centrifugal pump (high lift) + water tank (opt. code 135)
• Two centrifugal pump (Low lift) + water tank (opt. code 136)
• Two centrifugal pump (high lift) + water tank (opt. code 137)
Unit mounted hydronic kits are available with single and dual pumps.
The Low lift kits provides an average available head of 100 kPa at chiller standard conditions. The High lift kits
provides an average available head of 200 kPa at chiller standard conditions.
The kit is completed with pressure gauge, safety valve, drain valve. The motor pump is protected by a circuit
breaker installed in control panel. Pump motors are insulation class F, IP55 protected and supplied by the unit
with 400V/3ph/50Hz electric current. The kit is assembled and wired to the control panel. The pipe and pump
are protected from freezing with an additional electrical heater.
In case of unit equipped with hydronic kit on board selected to operate with glycol mixture, contact factory.
Water buffer tank volume (if selected), depends on unit model size – detailed informations available on section
“Options (technical data)” of this databook.
Refrigerant leak detection (opt. code 121 - Available only on units with compressors’ enclosure)
Automated permanent refrigerant leak detection system installed on board. The refrigerant sensors are installed
within the compressor enclosures and are specifically calibrated for R-32 refrigerant. When leaks above a certain
concentration are detected, the sensor provides a signal to the unit controller (a specific alarm is visualized on
the unit microprocessor). The automatic shut down and pump down of refrigerant into the condensing section
occurs on the detection of refrigerant leakage. The alarm threshold that triggers automatic pump down upon
detection of refrigerant is set to a maximum of 500ppm. Available only on units with compressors’ enclosure.
E-coating microchannel coils (opt. code 139)
A protection a layer of an epoxy polymer is added on the surface of the exchanger. The process consists in the
complete immersion of the exchanger in the epoxy polymer solution. An electric voltage applied to the exchanger
causes a difference with the electrical charge of the polymer molecules that, as result, are drawn to the metal.
The thickness of the coating is controlled by the applied voltage. The result is a uniform layer of epoxy polymers
applied all over the exchanger surface. A final UV top-coat treatment is applied on the coil surface. The treatment
is recommended in all application where high risk of corrosion exist (eg: high pollutted urban, costal, industrial
environments and their combinations). Opt. incompatibility 153.
Unit guards (to cover unit access) (opt. code 140)
Wire mesh that cover the access around the unit
Side panels on coil ends (opt. code 141 – Multi-V units only)
Protection panel on both side of each condensing module (sample image below).
Blue coat (opt. code 153 – Multi V units only)
An epoxy powder is sprayed and electrostatically fixed to the coil. Once the surface is completely covered by the
epoxy material, the coil is sent in to a furnace for the drying and curing phase. The result is a uniform and durable

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