Daikin EWLQ025KCW1N, Инструкция по установке, эксплуатации и обслуживанию

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pressures and temperatures of the system, it must also be resistant to the used glycol in the water.
The external surface of the water pipes must be adequately protected against corrosion.
10.2 Water charge, flow and quality
To assure proper operation of the unit a minimum water volume is required in the system and the water flow through the
evaporator must be within the operation range as specified in the table below.
Table 6-Water flow operation range
Minimum
water volume (l)
Minimum
water flow
Maximum
water flow
EWWQ014 62 31 l/min 75 l/min
EWWQ025 134 53 l/min 123 l/min
EWWQ033 155 76 l/min 186 l/min
EWWQ049 205 101 l/min 247 l/min
EWWQ064 311 152 l/min 373 l/min
10.3 Water piping insulation
The complete water circuit, inclusive all piping, must be insulated to prevent condensation and reduction of the cooling
capacity.
10.4 Refrigerant piping insulation
To prevent burning injuries by accidental touching the hot (max
135°C
) discharge pipe, it must be insulated thoroughly.
A minimum of insulation to protect the liquid pipe from damage is advisable.
10.5 Antifreeze protection for BPHE and recovery exchangers
If the exchangers are completely empty and cleaned with antifreeze solution, additional methods can be used against
freezing.
The following protection methods must be considered when designing the system as a whole:
1. continuous water flow circulation inside piping and exchangers.
2. addition of an appropriate amount of glycol inside the water circuit or, as alternative, an additional heat
insulation and heating of exposed piping (internal and external to the unit).
3. if the unit does not work during the winter season, emptying and cleaning of the heat exchanger.
It is the responsibility of the installer and/or of local maintenance personnel to ensure that described antifreeze meth ods
are used.
Make sure that appropriate antifreeze protection is always maintained. 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.