Daikin EWAH620TZ-XSB2 [17/102] Options

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OPTIONS

Thanks to the saving on pumping cost, the payback time for the Inverter Kit is approximately one year.

High ambient kit (opt. code 142) - Opt. incompatibility 99a-42-08.

The high ambient kit allows the operation of the unit for ambient temperature above 46°C. The set-up of the

units with High ambient kit are the follows:

SILVER series: includes oversized electrical equipment, enhanced ventilation for the electrical box,

sunshield, 6 poles AC fans (fans speed 900 RPM).

Note: the performance will differ from the standard unit. Refer to selection software for performances.

GOLD & PLATINUM series: oversized electrical equipment, enhanced ventilation for the electrical box,

sunshield, EC fans (fans speed up to 900 RPM).

Note: Opt. 142 is not compatible with opt. 08 Brine

Variable Primary Flow (opt. code 143)

By selecting opt. 143 the chiller can manage the Variable Primary water flow according to the differential

pressure measured in a specific point of the plant, selected by the plant designer. The differential pressure

transducer, is available as option from the factory (opt. code 144). Once placed on the plant the differential

pressure transducer must be connected to the unit. As alternative the unit controller can receive directly the

differential pressure value from an external BMS communicating with the standards communications protocols

(eg. MODBUS).

A bypass line (field supply) needs to be installed which guarantees that at all times the minimum water flow of

the chiller is supplied (refer to the “Operating limit” chapter for indication on minimum water flow). The bypass

valve will be an ON/OFF normally closed valve controlled by the chiller. In case the minimum water flow allowed

is not reached, the chiller will open the bypass line restoring the water flow above the minimum value.

In case of multiple units installations in a primary only plant, to control the pump speed ICM is required.