Liebert Challenger Plus CP20A U Technical Data Manual page 18

Challenger Plus - Technical Data Manual
Op tional fea tures - all mod els (con tin ued)
Filter clog switch
An ad just able dif fer en tial pres sure switch can be fit ted to
ini ti ate a change fil ter alarm when a pre- selected pres sure
drop across the fil ter bank is ex ceeded.
Water detection sensors
A wa ter de tec tion sensor, con tain ing an iso lated switch that
closes when wa ter (or other con duc tive liq uid) is de tected by
the sen sor probes may be or dered as an op tion. The sen sor is
her meti cally sealed, ro bust and should be fit ted in the
lo ca tion where wa ter prob lems might oc cur.
Smoke alarm
A smoke de tec tor/alarm is avail able as an op tion. The smoke
de tec tor will ac ti vate the alarm and stop the unit if smoke is
de tected in the re turn air. The sen sor is an op tic smoke
de tec tor (Tyn dall ef fect) which is in sen si tive to light or air
move ment.
Firestat
A firestat/alarm is avail able as an op tion. The firestat
de ac ti vates the unit when the re turn air tem pera ture is too
high. The firestat can be mounted in the unit or re motely,
con sult Ap pli ca tions En gi neers for de tails. The de tec tor is
com plete with an NTC ther mis tor.
Environmental Alarm Package
The Elec tronic En vi ron men tal Alarm Pack age (EEAP) is a
re mote tem pera ture and rela tive hu mid ity sen sor (ad di tional
to the in ter nal sen sor) con nected to the unit con trol ler.
The sen sor can be in stalled up to 20m from the unit and
gen er ates an alarm if the tem pera ture or the rela tive hu mid ity
ex ceeds one of the 4 user- set lim its:
• HighTemperature Limit
(Adjustable from 10°C to 50°C)
• Low Temperature Limit
(Adjustable from 0°C to 30°C)
• High Humidity Limit
(Adjustable from 30% to 99%)
• Low Humidity Limit
(Adjustable from 10% to 70%).
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Fresh air kit
The fresh air in take kit is rec om mended for use where the
con di tioned space is con tinu ously occupied. The kit con sists
of a cy lin dri cal EU3 fil ter mounted in the unit which
con nects to a 100mm di ame ter duct (the flexi ble duct can
also be sup plied if the length is speci fied).
The fresh air is then mixed with the dis charge air from the
unit through a slot on the in take side of the fan.
Floorstand
Floor stands are avail able in a range of heights, 300mm,
500mm and 800mm. Each height of floorstand is fit ted with
ad just able legs (± 25mm). The floor stands per mit in stal la tion
and con nec tion of the sys tem prior to in stal la tion of the raised
floor.
Turning vane
A fac tory in stalled turn ing vane may be speci fied to di rect the
air as re quired within the floor stand.
Fig ure 13 - Floorstand
SLE CP TDM E.1 (06/99)