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EWAPC11AJYNN
Технические данные Страница: 36

Daikin EWAPC11AJYNN [36/41] Installation

• Chillers • R-407C • EWAP-AJYNN

• Hydronic Systems • Chillers

8 Installation

8 - 1 Installation method

EWAP-AJYNN

Handling

Care should be taken to avoid rough handling or shock due to dropping the unit. Do not push or pull the unit from anything other than the base, and

block the pushing vehicle away from the unit to prevent damage to the cabinet. Never allow the unit fall during unloading or moving as this may result

in serious damage. To lift the unit, holes are provided in the base of the unit. Spreader bar and cables should be arranged to prevent damage to the

condenser coil or unit cabinet.

Location

EWAP-AJYNN units are produced for outside installation on roofs, floors or below ground level on condition that the area is free from obstacles for the

passage of the condenser air. The unit should be positioned on solid foundations and perfectly level; in the case of installation on roofs or floors, it may

be advisable to arrange the use of suitable weight distribution beams. When the units are installed on the ground, a concrete base at least 250 mm wider

and longer than the unit’s footprint should be laid. Furthermore, this base should withstand the unit weight mentioned in the technical data table. When

the units are positioned in areas which are easily accessible by persons or animals, it is advisable to fit guards to protect the condenser coil guards and,

when necessary, also guards to protect the evaporator area.

Space requirements

EWAP-AJYNN units are air-cooled, hence it is important to observe the minimum distances which guarantee the best ventilation of the condenser coils.

Limitations of space reducing the air flow could cause significant reductions in cooling capacity and an increase in electricity consumption.

To determinate unit placement, careful consideration must be given to assure a sufficient air flow across the condenser heat transfer surface. Two

conditions must be avoided to achieve the best performance: warm air recirculation and coil starvation.

Both these conditions cause an increase of condensing pressures that results in reductions in unit efficiency and capacity. EWAP-AJYNN chiller

performance is less affected in poor air flow situations because of its special condensing coil geometry.

Moreover DAIKIN’s unique microprocessor has the ability to calculate the operating environment of the chiller and the capacity to optimize its

performance staying on-line during abnormal conditions.

Each side of the unit must be accessible after installation for periodic service. Fig.1 shows you minimum recommended clearance requirements.

Vertical condenser air discharge must be unobstructed because the unit would have its capacity and efficiency significantly reduced.

If the units are positioned in places surrounded by walls or obstacles of the same height as the units, the units should be at least 2500 mm from obstacles

(fig.2). In the event the obstacles are higher than the units, the units should be at least 3000 mm from the obstacle (fig.4). Units installed closer than the

minimun recommended distance to a wall or other vertical riser may experience a combination of coil starvation and warm air recirculation, thus causing

reduction in unit capacity and efficienty reductions. Once again, the microprocessor will allow the chiller to stay on line, producing the maximum available

capacity, even at less than recommended lateral clearances.

When two or more units are positioned side by side it is recommended that the condenser coils are at least 3600 mm distance from one another (fig.3);

stong wind could be the cause of air warm recirculation.

For other installation solutions, consult DAIKIN technicians.

Acoustic protection

The low noise levels of the EWAP-AJYNN units means that they meet the most restrictive regulations, thanks to the availability of four versions with

different sound levels. When the noise level must meet special requirements it will be necessary to pay the maximum attention to ensure the perfect

insulation of the unit from the support base by applying appropriate vibration-dampening devices, applying vibration-dampening mounts on the water

pipes and on the electrical connections.

18001800

1500 3500

fig. 1

2500 2500

fig. 2

3600

fig. 3

3000

fig. 4

Daikin EWAPC11AJYNN [36/41] Installation

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