Water source heat pump (90,130,160kw)Modular type R407C, R22,the master units could work independently or ... with max 7 slave unit Modular Water source heat pumpCooling Capacity: 90kw-720kw, 130kw-1040kw 160kw ... maintenance cost thanks to reliable microprocessor system.Wide application as hotel, apartment, villa, factory, shopping center, office building, school, etc. ...