Daikin EWYE019CZN-A1 handleiding
Handleiding
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EWYE-CZP – Pump low lift
Figure 14 - External pressure head of Low Lift Pump
External static pressure refers to unit equipped with hydronic kit, defined as difference between pump external static
pressure and evaporator and water filter pressure drop. Water flow range refer to pump only. For water flow limits of the
unit refer to water flow section.
Pump low lift
Model
Pump curve
EWYE019CZP-A1
A
EWYE022CZP-A1
A
EWYE025CZP-A1
A
EWYE030CZP-A1
B
EWYE035CZP-A1
B
EWYE050CZP-A2
C
EWYE060CZP-A2
C
EWYE070CZP-A2
D
Table 6 - Pump curve associated with each unit size
4.11 Operating stability and minimum water content in the system
For the correct functioning of the machines it is important to guarantee a minimum water content inside the system,
avoiding an excessive number of compressor startups and stops. In fact, every time the compressor starts working, an
excessive amount of oil from the compressor enters the circulation in the refrigerant circuit and at the same time there is
an increase in the temperature of the compressor stator, generated by the inrush current of the starting. In order to
prevent damage to the compressor, the control system will therefore permit no more than 10 startups per hour. The plant
where the unit is installed must therefore ensure that the overall water content allows constant operation of the unit and
consequently also greater environmental comfort.
4.11.1 Cooling Mode
The chilled water content of the systems should have a minimum water amount to avoid excessive stress (start and
stops) on the compressors.
Design considerations for water volume are the minimum cooling load, the water temperature setpoint differential and
the cycle time for the compressors.
As a general indication, the system water content should not be less than the values deriving from the following
formula:
Single circuit Unit → 5
𝒍𝒕
𝒌𝑾 𝒏𝒐𝒎𝒊𝒏𝒂𝒍
Dual circuit Unit → 3,5
𝒍𝒕
𝒌𝑾 𝒏𝒐𝒎𝒊𝒏𝒂𝒍
kWnominal = Cooling capacity at 12/7°C OAT=35°C
0,00
50,00
100,00
150,00
200,00
250,00
300,00
350,00
0,00 1,00 2,00 3,00 4,00 5,00 6,00 7,00
external head [kPa]
Water flow rate [L/s]
curva A
curva B
curva C
curva D
Bekijk gratis de handleiding van Daikin EWYE019CZN-A1, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWYE019CZN-A1 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 8033 MB |
