LG PRHR040 Brochure page 48

61799 LG Multi V Catalogue
Sirocco fans designed to withstand high building wind speeds
Building wind and reverse wind effect are stronger at higher floor levels, which can cause
discharge air to short cycle back to the induction side affecting system control. It can also
cause damage to the fans, which in turn will considerably reduce system performance.
However,
overcome this problem. This makes
applications.
Conventional
4m/s
No interference from the discharge air between units or between floors
Because of the symmetrical design characteristics of conventional VRF systems, high rise
installation is not always recommended (due to heat columns affecting system control on
higher floors).
air discharge fans which throw the air outwards rather than upwards, allowing high rise
installation with no control problems on the upper floors.
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Air conditioning system
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Design
therefore keeping the building interior safe from strong winds associated with high rise buildings.
is designed to generate very strong airflow (7m/s or more) to
Hot air
Building wind
4m/s
Air guide
Outdoor unit
solves such installation problems using powerful left and right
Sirocco fan
has applied frontal induction and discharge method for the first time on a VRF unit,
ideal for use in such high rise
7m/s
Right outoor unit
Conventional
Hot air
Building wind
7m/s
Left outoor unit