Firewall for hot water heating

The utility model relates to a firewall with a natural circulation hot water heating system. The firewall is organically combined with a heatable brick bed and a natural circulation hot water heating system, and mainly comprises a firewall, a heatable brick bed, a heat collector, a water expansion tank, a radiator, a drain valve and so on. The firewall is arranged on one side of the heatable brick bed, and the height of the firewall is smaller than that of the heatable brick bed. The firewall has an independent combustion chamber, and the smoke exhaust is connected with the heatable brick bed or directly connected with a chimney. The heat collector is arranged inside the combustion chamber of the firewall. When in use, the firewall is heated directly, and the heat collector serve as a heat source to form a heating system. The heating system has high thermal efficiency, and can rapidly and durably keep the indoor temperature, thereby improving the comfort of the heatable brick bed. The firewall and the heatabl