Code 4.103 Central heating system with boiler and domestic hot water production with storage and solar integration Discover
Code 4.104 Central heating system with boiler and solar integration (without domestic hot water production at the central unit) Discover
Code 4.101 System with traditional boiler, domestic hot water production and storage with solar integration Discover
Code 4.102 System with traditional wall-mounted boiler, domestic hot water production with solar integration Discover
Code 4.303 Hybrid system with solid fuel and gas-fired boilers <35 kW, inertial tank with built-in cylinder Discover
Code 4.304 Hybrid system with solid fuel and gas-fired boilers, <35 kW domestic hot water production with storage Discover