① Heating system: heating cycle, boiler mixed flow, temperature mixed flow, intermittent heating, exhaust gas heat recovery, mixed circuit;
② Air conditioning system: chilled water circulation;
③ Water supply system: filtration and transportation, pipeline pressurization;
④ Industrial production: flushing and cleaning systems, boiler feedwater, cooling water circulation, water treatment systems, equipment supporting systems;
⑤ Fire protection system.
