10.x Heating circuit Rk1 Heating circuit Rk2 DHW heating
11.x Heating circuit Rk1 – DHW heating Rk2
12.x Primary heat exchanger
circuit Rk1 + supplemen-
tary heating circuit Rk3
– DHW heating Rk2
13.x Heating circuit Rk1 Supplementary heat. circuit Rk3 DHW heating Rk2
21.x Heating circuit Rk1 Heating circuit Rk3 DHW heating Rk2
25.0 Heating circuit Rk1 Heating circuit Rk2 Heating circuit Rk3
162 EB 5579 EN
Appendix