Daikin EWAD270TZ-PR [68/75] Installation notes

INSTALLATION NOTES

Warning Installation and maintenance of the unit must to be performed only by qualified personnel who have knowledge with local

codes and regulations, and experience with this type of equipment. Must be avoided the unit installation in places that could be

considered dangerous for all the maintenance operations.

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 frame. Never allow the unit to fall during unloading or moving as this may result in serious damage. To

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

condenser coil or unit cabinet.

Location The 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.

Space requirements The units are air-cooled, then it is important to respect 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.

Moreover the unique microprocessor has the ability to calculate the operating environment of the air cooled 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 and Fig.2' 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 follow the

minimum recommended clearance requirements shown in 'Fig.3 and Fig.4'. In the event the obstacles are higher than the units, the

minimum recommended clearance requirements are shown in 'Fig.5 and Fig.6'. Units installed closer than the minimum 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 efficiency reductions. The microprocessor control is proactive in response “of design condition”. In the

case of single or compounded influences restricting airflow to the unit, the microprocessor will act to keep the compressor(s) running

(at reduced capacity) rather than allowing a shut-off on high discharge pressure.

When two or more units are positioned side by side it is recommended that the condenser coils are at a minimum distance from one

another as shown in 'Fig.7 and Fig.8'; strong wind could be the cause of air warm recirculation.

For other installation solutions, consult our technicians.

The above recommended information are representative of general installation. A specific evaluation should be done by contractor

depending on the case.

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