Daikin EWAD-TZSLB [10/20] D eimac00907 16en 10 20

D-EIMAC00907-16EN - 10/20

The minimum distances, reported above, ensure functionality

of the chiller in most applications. However, there are specific

situations which include multiple chiller installations: in this

case the following recommendations are to be followed:

Multiple chiller installed side by side in a free field with

dominant wind.

Considering an installation in areas with a dominant wind from

a specific direction (as shown in the Fig.5):

 Chiller N°1: is performing normally without any

ambient over-temperature

 Chiller N° 2: is working in a warmed ambient. The

first circuit (from the left) is working with air

recirculating from Chiller 1 and the second circuit to

the recirculating air from the chiller N°1 and

recirculation from itself.

 Chiller N° 3: circuit on the left is working in a over-

temperature ambient due to the recirculating air from

the other two chillers, circuit on the right is working

quite normally.

In order to avoid the hot air recirculation due to dominant

winds, the installation where all chillers are aligned to the

dominant wind is preferred (see figure below):

Multiple chiller installed side by side in a compound.

In case of compounds with walls of the same height of the

chillers or higher, the installation is not recommended. Chiller 2

and chiller 3 work with sensible higher temperature due to the

enhanced recirculation. In this case special precautions must

be taken in to account according to the specific installation (eg:

louvered walls, install the unit on base frame in order to

increase the height, ducts on the discharge of the fans, high lift

fans, etc).

All the above cases are even more sensitive in case of design

conditions close to the limits of the unit operating envelope.

NOTE: Daikin cannot be considered responsible in case of

malfunctions generated by hot air recirculation or insufficient

airflow as result of improper installation if the above

recommendations are ignored.

Figure 5 – Multiple Chiller Installation