A. With domestic hot water and one radiator / Underfloor heating furnace circulating system

① Stove    ② Primary side high level water tank      ③ Softener      ④ Primary side circulation pump       ⑤ Plate heat exchanger
⑥ Secondary side expansion tank      ⑦ Secondary side circulation pump (Heating)    ⑧ Secondary side safety valve      ⑨ Secondary side circulation pump (Hot water)     ⑩ Water-storage tank

⑪ Hot water circulation pumps     ⑫ Hot water booster pumps      ⑬ Silicon phosphate crystal water softening device

B. Furnace circulating system with one set of radiators / Underfloor heating

① Stove      ② Primary side high level water tank      ③ Softener      ④ Primary side circulation pump      ⑤ Plate heat exchanger

⑥ Secondary side expansion tank      ⑦ Secondary side circulation pump (Heating)    ⑧ Secondary side safety valve

C. Heating cycles with radiators and underfloor heating

① Stove      ② High water tank      ③ Softener      ④ Primary side circulation pump      ⑤ Plate heat exchanger

⑥ Secondary side expansion tank      ⑦ Secondary side circulation pump      ⑧ Secondary side safety valve      ⑨ Circulation pump

D. Multiple boilers with a set of radiators in the heating furnace circulation system

① Stove      ② High water tank      ③ Softener      ④ Primary side circulation pump      ⑤ Plate heat exchanger

⑥ Secondary side expansion tank      ⑦ Secondary side circulation pump      ⑧ Secondary side safety valve