8 Installation Instructions ACF-NT, ACF-NT V0309 42/23-571 EN Rev. 5Chapter 1 Installation PreparationInstallation Site RequirementsShort Gas Paths The analyzer cabinet should be installed as close as possible to the sampling site.A short sample gas line results in brief lead times. The sample gas line length islimited to 60 meters with 230 VAC power supply and to 40 meters with 120 VACpower supply on account of pressure drop build-up in the line and the requiredelectrical fusing. The air purifier and the test gas cylinders should be installed asclose as possible to the analyzer cabinet.Protection fromAdverse ConditionsProtect the analyzer cabinet against Water spray Contact with chemicals Strong sunlight and heat radiation Strong air currents Heavy dust Corrosive atmospheres VibrationThe analyzer system is intended for indoor use only. Ambient temperature for storage and shipping –25 to +65 °C Ambient temperature during operation In air conditioned rooms +20 to +25 °C With air conditioning unit (optional) +5 to +40 °C Relative humidity Year-round average max. 75 % Short-term max. 95 %EnvironmentalConditions Occasional slight condensation is permitted, provided theanalyzer system is turned on and the FTIR spectrometer is purgedInstallation LocationAltitudeThe maximum installation altitude is 800 m above sea level (for sample gas linelength with probe = 10 m).Remark: The minimum inlet pressure at the analyzer cabinet is defined to 900 hPa.This results in a maximum altitude above 800 m; however, the pressure drop alongthe probe (15 hPa for a new, dust-free probe) and the heated line must be consid-ered. Higher altitudes would result in no gas flow through the system. Loweringthe pressure set points of the ACF-NT is not allowed as this directly reduces thesensitivity of the FTIR spectrometer. Thus, the measurement accuracy accordingto QAL1 and QAL2 for components with low concentrations cannot be warranted. Right side 1 m for gas lines, air purifier and air conditioning unit (optional) Left side 0.5 m for electrical lines Front 1 m to open the door (hinged at left)Space Requirement Top 0.5 m with air conditioning unit (optional) to prevent heat buildupFloor The installation site floor must be plane and capable of supporting the cabinetsweight (approx. 300 kg).