Low-emission and Energy-saving Gas-fired Calorific-Value Heating Devices
These Basic Criteria apply to gas-fired calorific-value appliances
a) according to DIN 4702, Part 6, with a nominal thermal output of up to and including 70 kW designed for the use of natural gas the exhaust gases of which are discharged via an over-roof exhaust-gas system according to DIN 181601) approved by the building inspection authorities.
b) according to DIN 3368, Parts 7 and 8, with a nominal thermal output of up to and including 70kW designed for the use of natural gas the exhaust gases of which are discharged via an over-roof exhaust-gas system approved by the building inspection authorities or via an exhaust-gas pipe tested together with the appliance.
c) according to DIN EN 677 with a nominal heat load of up to and including 70kW designed for the use of natural gas the exhaust gases of which are discharged via an over-roof exhaust-gas system approved by the building inspection authorities or via an exhaust-gas pipe tested together with the appliance.
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