Vertiv Liebert PCW - Page 53

E - 4
Enclosure E - Accessories
Liebert PCW - UM - 273895 - 04.10.2018
E.10. Air Economizer
The Air Economizer comprises an extension hood 860 mm height
with a dampers system installable on top of the Downow units.
This system allows the free-cooling taking advantage of cool out-
door air to condition indoor space.
The Air Economizer system delivers high energy savings reducing
or eliminating the cost for pumping and chilling of the water.
To use the Air Economizer the building has to be equipped with
suitable air ducts and the dampers system modulating permits to
use di󰀨erent channel congurations.
E.11. Floor tiles support kit (Not Available for PH 025 - 030)
Floor tiles support kit can be supplied on request to support tiles
around Liebert PCW Downow Down, when installed with a raised
oor.
Floor tiles support is xed on the unit frame/fan module and allows
to support tiles until 40 mm thickness.
With a correct installation, the maximum admitted vertical distribut-
ed load on the perimeter is 180 kg/m.
I.e.: on the lateral side, 870mmlong, the maximum admitted distrib-
uted load is 157 kg.
Floor tiles support is earthed with the unit frame.
Follow local rules for system grounding.