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D-EIMAC01706-18EN- 18/32
𝑀 [𝑙] = 𝑚 [
𝑙
𝑘𝑊
] ∗ 𝐶𝐶 [𝑘𝑊]
where:
M = minimum water content per unit, expressed in liters [l];
CC = cooling capacity (Cooling Capacity), expressed in kiloWatt [kW];
m = specific water content [l/kW].
Model
m
EWATxxxB-XXA1
5 l/kW
EWATxxxB-XXA2 2.5 l/kW
Note:
The calculation formula described above takes into account several factors such as the compressor stop time and
the permissible temperature difference between turning off and restarting the last compressor. In this regard, the minimum
calculated water content refers to the operation of the machine in a normal air conditioning system. If greater stability of
operation is required, it is recommended to double the calculated water content. For the most accurate determination of
the amount of water, it is advisable to contact the system designer. In very simple systems, it may be necessary to insert
in the hydraulic circuit an inertial storage tank that allows to reach the minimum volume of water required. The insertion of
this component must guarantee the correct mixing of the water and therefore it is advisable to choose a tank that has inside
of the diaphragms dedicated for this purpose.
Anti-freeze protection for evaporator and recovery exchangers
All evaporators are supplied with a thermostatically controlled anti-freeze electrical resistance, which provides adequate
anti-freeze protection at temperatures as low as -20°C.
However, unless the heat exchangers are completely empty and cleaned with anti-freeze solution, additional methods
should also be used against freezing.
Two or more of below protection methods should be considered when designing the system as a whole:
Continuous water flow circulation inside piping and exchangers
Addition of an appropriate amount of glycol inside the water circuit
Additional heat insulation and heating of exposed piping
Emptying and cleaning of the heat exchanger during the winter season
It is the responsibility of the installer and/or of local maintenance personnel to ensure that described anti-freeze
methods are used. Make sure that appropriate anti-freeze protection is maintained at all times. Failing to follow the
instructions above could result in unit damage.
Damage caused by freezing is excluded from the warranty, therefore Daikin Applied Europe S.p.A
declines all responsibility
Electric connections
Provide an electrical circuit to connect the unit. It must be connected to the copper cables with an adequate section relative
to the plate absorption values and according to the current electrical standards.
Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection.
The connections to the terminals must be made with copper terminals and cables, otherwise
overheating or corrosion may occur at the connection points with the risk of damaging the unit. The
electrical connection must be carried out by qualified personnel, in compliance with the laws in force.
There is a risk of electric shock.
The power supply to the unit must be set up in such a way that it can be switched on or off independently from that of other
system components and other equipment in general, by means of a general switch.
The electrical connection of the panel must be carried out maintaining the correct sequence of the phases. Refer to the
specific wiring diagram for the unit you have bought. Should the wiring diagram not be on the unit or should it have been
lost, please contact your manufacturer representative, who will send you a copy. In case of discrepancy between wiring
diagram and electrical panel/cables, please contact the manufacturer representative.
Do not apply torque, tension or weight to the main switch terminals. Power line cables must be
supported by appropriate systems.
To avoid interference, all control wires must be connected separately from the power cables. To do this, use several
electrical passage ducts.