Kelvinator Air Conditioning Outdoor unit installation 11Outdoor unit installationRefrigerant pipe connectionNOTE:• The connectors used to join the indoor and outdoorrefrigeration pipes must be located outside. They cannot belocated inside or within a wall cavity where refrigerant maybuild up in the case of a leak.• Refrigeration pipe length will affect the capacity and energyefficiency of the unit. The nominal efficiency is tested based onthe pipe length of 5 meters.• If the installation requires pipe length greater than thestandard 5m, then add additional refrigerant according to thebelow table, which also indicates the maximum pipe lengthand maximum height difference between indoor and outdoorunits.• Please also refer to the below table for discharge and suctionpipe diameter.ModelDischargepipediameterSuction pipediameterStandardlength(m)Maximumlength(m)Maximumheight(m)Additonalrefrigerant(g/m)KSV25CRG ø 6.35 (1/4") ø 9.52 (3/8") 5 25 10 15KSV35CRG ø 6.35 (1/4") ø 12.7 (1/2") 5 25 10 15KSV70CRG ø 9.52 (3/8") ø 15.9 (5/8") 5 50 25 30KSV25HRG ø 6.35 (1/4") ø 9.52 (3/8") 5 25 10 15KSV35HRG ø 6.35 (1/4") ø 12.7 (1/2") 5 25 10 15KSV50HRG ø 6.35 (1/4") ø 12.7 (1/2") 5 30 20 15KSV70HRG ø 9.52 (3/8") ø 15.9 (5/8") 5 50 25 30KSV80HRG ø 9.52 (3/8") ø 15.9 (5/8") 5 50 25 30KSD25HRG ø 6.35 (1/4") ø 9.52 (3/8") 5 25 10 15KSD35HRG ø 6.35 (1/4") ø 12.7 (1/2") 5 25 10 15KSD50HRG ø 6.35 (1/4") ø 12.7 (1/2") 5 30 20 15KSD70HRG ø 9.52 (3/8") ø 15.9 (5/8") 5 50 25 30KSD80HRG ø 9.52 (3/8") ø 15.9 (5/8") 5 50 25 30