Daikin EWYT021CZI-A1, Руководство по установке и обслуживанию

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D-EIMHP01505-22_00EN 6/59
32. During transport, always secure the unit to the bed of the vehicle to prevent it from moving about and overturning.
33. The machine must be transported according to the regulations in force considering the characteristics of the fluids
in the machine and the description of these on the safety data sheet.
34. Inappropriate transport can cause damage to the machine and even leaking of the refrigerant fluid. Before start-up,
the machine must be checked for leaks and repaired accordingly.
35. The accidental discharge of refrigerant in a closed area can cause a lack of oxygen and, therefore, the risk of
asphyxiation: install the machinery in a well-ventilated environment according to EN 378-3 / ISO 5149-3 and the
local regulations in force.
36. The installation must comply with the requirements of EN 378-3 / ISO 5149-3 and the local regulations in force.
1.2. General description
The unit purchased is a Heat Pump, that is a machine designed to cool/heat the water within certain limits which will be
listed below. The unit operates based on the compression, condensation, and evaporation of the coolant gas as per the
Carnot cycle and is composed mainly of the following parts depending on the Mode of Operation.
The unit is in
“split” configuration, which means it is made up of two main parts:
▪
The Indoor Unit, which will be installed in an enclosed space and contains the water circuit and the plate heat
exchanger
▪
The Outdoor Unit, which will be installed in the open air and contains the compressor, the coil and the fans.
The two units will be connected through the refrigerant piping system built in the structure.
To ensure the correct operation of the heat pump, the outdoor and indoor units shall be electrically connected (refer to the
wiring diagram supplied with the units).
Cooling or Conditioning Mode:
▪
One or more scroll compressors which increase the pressure of the refrigerant gas from evaporation pressure to
condensation pressure.
▪
A condenser where the refrigerant gas condenses under high pressure and transfers heat to the air.
▪
An expansion valve which allows the pressure of condensed liquid refrigerant to be reduced from condensation
pressure to evaporation pressure.
▪
An evaporator, where the low-pressure liquid refrigerant evaporates and chills the water.
Heating Mode or Heat Pump:
▪
One or more scroll compressors which increase the pressure of the refrigerant gas from evaporation pressure to
condensation pressure.
▪
A condenser where the refrigerant gas condenses under high pressure and transfers heat to the water.
▪
An expansion valve which allows the pressure of condensed liquid refrigerant to be reduced from condensation
pressure to evaporation pressure.
▪
An evaporator, where the low-pressure liquid refrigerant evaporates.
▪
The operation of the heat exchangers can be inverted using the 4way valve, with which the use of the
heating/cooling unit can be seasonally inverted.
All units are fully assembled in the factory and tested before shipping. The EWYT~CZ(I/O) range consists of models with
a single cooling circuit and models with two cooling circuits.
The machine uses R32 refrigerant fluid suitable for the entire field of application of the machine.
The controller is prewired, set up and tested at the factory. Only normal field connections such as piping, electrical
connections and pump interlocks are required, simplifying installation, and increasing reliability. All safety and operation
control systems are installed at the factory in the control panel.
The instructions in this manual are applicable to all models in this series unless otherwise specified.