In Tro Duc Tion - Liebert Challenger Plus CP20A U Technical Data Manual

Challenger Plus - Technical Data Manual

In tro duc tion

Pre ci sion en vi ron mental con trol may be de fined as the
si mul ta ne ous con trol of air tem pera ture, hu mid ity,
dis tri bu tion and clean li ness on a con tin ual, around- the- clock
ba sis.
Con ven tional build ing or 'co mfort' sys tems, as they are
called, are not de signed for this 24- hour, year- round us age;
they lack the abil ity to pro vide the pre ci sion and re li abil ity or
'close con trol' that is so criti cal to many ap pli ca tions.
The Lie bert Chal lenger Plus is a new se ries of air
con di tion ers de signed by Lie bert to meet the re quire ments of
data proc ess ing cen ters and other small and me dium sized
criti cal ar eas.
The Challenger Plus se ries com prises both di rect ex pan sion
units and chilled wa ter units. Cool ing ca paci ties range from
20 to 70 kW, for a to tal of 54 mod els. Di rect ex pan sion units
are equipped with com pli ant scroll com pres sors. The de sign
of the scroll com pres sor, en sures a con stant re frig er ant
pres sure, thus im prov ing re li abil ity, en ergy con sump tion and
sound emis sion.
Liebert technology and energy
efficiency
Lie bert has be c o m e a world leader in pre ci sion
en vi ron mental con trol sys tems by pro vid ing maxi mum
en ergy ef fi ciency with out com pro mis ing pre ci sion and
re li abil ity.
Lie bert takes a no- compromise ap proach to en vi ron mental
con trol sys tem de sign. All en hance ments to en ergy
ef fi ciency are de signed to re duce op er at ing time of key
com po nents. This is ac com plished by tak ing ad van tage of
al ter nate sources of cool ing when avail able or, by re duc ing
com pres sor work load when the heat load in the criti cal space
is lower.
Applications
The Chal lenger Plus unit is ide ally suited for pre ci sion close
con trol of the fol low ing types of en vi ron ment:
• Data processing centers
• Telecommunications
• Industrial applications
The de sign of the Chal lenger Plus unit can vary de pend ing on
the ap pli ca tion, con sult the Lie bert Ap pli ca tions En gi neer ing
De part ment for spe cific de tails.
2
Manufacture
All units are built in ac cor dance Euro pean di rec tives
98/37/CE (89/392/CEE; 91/368/CEE; 93/68/CEE),
89/336/CEE; 73/23/CEE. The Lie bert Air Con di tion ing
Qual ity Sys tem is ap proved by LRQA in ac cor dance with the
stan dards UNI EN ISO 9001: 1994.
Each unit is sup plied com plete with a Test Cer tifi cate and
Dec la ra tion of Con formity.
All Chal lenger Plus units carry the "CE" mark and fully
com ply with Euro pean Di rec tives con cern ing me chani cal,
elec tri cal and elec tro mag netic safety.
Features
• New fan sec tion - sin gle inlet, radial cen trifu gal fans (plug
fans) with back ward curved blades. Variable speed motor
with external rotor. Avail able static pres sure up to 350 Pa,
stan dard con figu ra tion
• High COP (Co-efficient Of Performance)
• High SHR (Sensible Heat Ratio)
• Low energy consumption; High EER (Energy Efficiency
Ratio)
• Low operating cost
• All materials used in the unit are fully recyclable
• Low internal air-side pressure drop
• High efficiency filtration, up to EU8 available
• Modular construction
• Sandwich construction of panels with non-flammable -
Class 0 (ISO 1182.2) insulation
SLE CP TDM E.1 (06/99)