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To ensure best performance on the installation site, the following precautions and instructions must be followed:
− Avoid air flow recirculation.
− Make sure that there are no obstacles to hamper air flow.
− Make sure to provide a strong and solid foundation to reduce noise and vibrations.
− Avoid installation in particularly dusty environments, in order to reduce soiling of condensers coils.
− The water in the system must be particularly clean and all traces of oil and rust must be removed. A mechanical water
filter must be installed on the unit's inlet piping.
3.5
Minimum space requirements
It is fundamental to respect minimum distances on all units in order to ensure optimum ventilation to the condenser. Limited
installation space could reduce the normal air flow, thus significantly reducing the machine's performance and considerably
increasing consumption of electrical energy.
When deciding where to position the machine and to ensure a proper air flow, the following factors must be taken into
consideration: avoid any warm air recirculation and insufficient air supply to the air-cooled condenser.
Both these conditions can cause an increase of condensing pressure, which leads to a reduction in energy efficiency and
refrigerating capacity. Thanks to the geometry of their air-cooled condensers, the units are less affected by poor air
circulation conditions.
Also, the software has particularly the ability to compute the machine's operating conditions to optimise the load under
abnormal operating circumstances.
Every side of the machine must be accessible for post-installation maintenance operations. Figure 4 shows the minimum
space required.
Vertical air discharge must not be obstructed as this would significantly reduce capacity and efficiency.
If the machine is surrounded by walls or obstacles of the same height as the machine, it must be installed at a distance of
at least 2500 mm. If these obstacles are higher, the machine must be installed at a distance of at least 3000 mm.
Should the machine be installed without observing the recommended minimum distances from walls and/or vertical
obstacles, there could be a combination of warm air recirculation and/or insufficient supply to the air-cooled condenser
which could cause a reduction of capacity and efficiency.
In any case, the microprocessor will allow the machine to adapt itself to new operating conditions and deliver the maximum
capacity available under any given circumstances, even if the lateral distance is lower than recommended.
When two or more machines are positioned side by side, a distance of at least 3600 mm between the respective condenser
banks is recommended.
For further solutions, please consult Daikin technicians.
Fig. 5 - Minimum clearance requirements for machine maintenance
D–EIMHP01201-18_06EN - 14/27
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