NF D35-323:1991 Heating. Gas. Liquid fuel, solid fuel. Gas hurning appliances for instantaneous production of hot water for domestic use, intended to be connected to a mechanical installation for the evacuation of combustion products.
1991NF D35-323:1991 Heating. Gas. Liquid fuel, solid fuel. Gas hurning appliances for instantaneous production of hot water for domestic use, intended to be connected to a mechanical installation for the evacuation of combustion products.