Scheme 408b (WDC20) - Solid fuel boiler, gas boiler, mixing circuit, d. h. w. storage tank
Shema 408b (WDC20) - Kotel na trdo kurivo, plinski kotel, mešalni krog, grelnik sanitarne vode,
Scheme 409 (WDC20) - Heat accumulator, oil boiler, mixing circuit, d. h. w. storage tank
Schema 409 (WDC20) - Wärmespeicher, Ölkessel, Mischerheizkreis, Brauchwassererwärmer
150