ISPK Modular compact heat pumps Recommendations for the cooling connection, for split version In split version, the outdoor module and indoor module must follow some recommendations Outdoor unit top Outdoor unit bottom Maximum equivalent length of the cooling line: 50 metres Maximum equivalent length of the cooling line: 30 metres For longer lenghts an oil separator must be user SPK outdoor module L: liquid line L: liquid line G:gas line G:gas line Siphon in gas line for every Siphon in gas line for every 3 metres of drop 3 metres of drop SPK indoor module SPK outdoor module L G GL SPK indoor module Note: when the unit is supplied for split version with the outdoor and indoor modules, can include optionally filling and service valves for the circuit connections and the charge of refrigerant until 7 m of distance. Additional load of R-410A refrigerant Additional load per linear metre of piping for equivalent maximum lengths exceeding 7 metres: Nominal diameter (inches) 1/4” 3/8” 1/2” 5/8” 3/4” 7/8” 1” 1 1/8” Interior section (cm)2 0,149 0,444 0,900 1,505 2,282 3,120 4,290 5,346 Liquid line charge (g/m) 19,3 57,0 115,0 193,5 292,3 404,1 550,3 685,7 Gas line charge (g/m) -- 0,2 0,4 0,7 1,0 1,4 2,0 2,5 276 276 CATALOGUE 2021 m 04 thgieh cirtemoeg mumixaMm 6 thgieh mumixaM