KA IMO 2021 6 V2.1

10 systemair
Intended use and application options
• KA air handling units are designed to transport and treat air in a temperature range from -20 ºC to +80 ºC.
• At altitudes up to 1,000 m above sea level, the normal operating range of the fans and their electric motors is up to
+40 ºC.
• Units for comfort ventilation (KA HS ...)ofpremisessuchasofces,classrooms,hotels,shops,apartmentsandsimilar
locations where a high level of comfort is required.
• Hygienic-type air handling units (KA HH ...) for the ventilation of clean rooms such as operating theatres and similar
premises in health care facilities, rooms in the pharmaceutical industry and the electronics manufacturing industry,
and other rooms with similar requirements.
• Explosion-proof air handling unit versions (KA HS … Ex or KA HH … Ex) for the ventilation of rooms with an explosive
atmosphere. In case of such unit, separate additional guidelines are added.
• Indoor air handling unit versions (KA HSI…;KAHHI…)forinstallationindoors–ontheoor,onaplatformorunder
the ceiling.
• Outdoor air handling unit versions (KA HSO…;KAHHO …) for installation outdoors.
Uses other than the intended use
Caution
In the event the unit needs to operate at temperatures exceeding +40 ºC or at altitudes exceeding 1000
mabovesealevel,suchmustbespeciedintheorder.Similarly,anyotherconditionsdeviatingfromthe
conditionsofintendedusemustalsobespeciedintheorder.
• At altitudes above 1000 m above sea level and at temperatures in the range from +40 ºC to +60 ºC, a reduction
intheelectricmotorcapacityshouldbetakenintoaccount,inaccordancewiththeinstructionsofthemotor
manufacturer.
• In cases where the air temperature exceeds +60 ºC, special versions of the fans and its electric motors should be
applied.
• When so requested, air handling units suitable for air temperatures up to +100 ºC are also available.
• Indoor versions of air handling units designed for indoor installation cannot be installed outdoors.
• Standard and hygienic air handling unit versions cannot be used in environments requiring corrosion protection levels
exceedingthoseprovidedbythematerialsspeciedasstandardanddeterminedinaccordancewiththeminimum
requirementsoftherelevantstandards,orbythematerialsandsolutionsspeciedbythecustomeratthetimeof
ordering the unit.
• Explosion-proof versions of air handling units may not be used in such environments and for such purposes that
donotcorrespondtotheexplosion-protectionlevelspeciedontheunitnameplate.Incaseofsuchunit,separate
additional guidelines are added.
• The unit’s inside-outside pressure differential may not exceed 2000 Pa.
• Prior to commissioning the unit, all the ducts must be installed and all the guards and protection devices must be in
place to prevent access to the rotating parts of the fans.
• Duringoperation,alltheservicedoorsmustbeclosedandlocked.
• Donotoperatetheunitwithoutinstallinglters.
• Do not operate the unit when external dampers are in closed position.