CHS_LHS

31242827EN-03 23 LU-VE Exchangers is a trademark registered and owned by LU-VE Group. LU-VE Exchangers reserves the right to change specifications without prior notification. 5.18 Ammonia refrigerant The CSA, LSA range is suitable for operation with pumped NH3. there are two types of supply: pumped top feed PT (default) and pumped bottom feed PB. NH 3 PT default NH 3 PB optional If GB defrost option is selected, as default the connections shall be carried out by the customer. connections carried out by the customer connections carried out by the customer R IN R IN R OUT R OUT HOT GAS HOT GAS NH 3 PT default + GB NH 3 PB optional + GB On request: • connections done by LU-VE • connections done by LU-VE + non-return valve Follow the NH3 quantities indicated in the technical calculation to ensure correct supply to the unit cooler. Non-uniform defrosting inidicates that the quantity of NH3 is too low and should be increased. 5.19 CO2 refrigerant The presence of humidity in the CO2 circuit can be especially hazardous due to the creation of micro-grains of ice crystals that can cause the tube to break. It is advisable to use CO2 with a purity class of 4.5 or equivalent, or H2O < 5 ppm and to install properly sized and mainteined dehydrator filters in the cooling circuit.