Heaters; Room heaters; Furnaces (other than for laboratory use); Furnaces for central heating; Furnaces, other than for laboratory use; Apparatus for heating; Appliances for heating; Central heating apparatus; Domestic central heating appliances; Domestic heating apparatus; Domestic heating appliances; Heating apparatus; Heating apparatus for solid, liquid or gaseous fuels; Heating apparatus for use in the home; Heating furnaces, other than for laboratory experiments; Heating installations; Heating units; Home heating installations; Installations for central heating; Installations for heating; Non-electric central heating installations; Residential heating units; Combustion apparatus; Combustion furnaces; Domestic combustion appliances; Control devices (thermostatic valves) for heating installations; Control units (thermostatic valves) for heating installations; Instruments for temperature control in central heating installations (thermostatic valves); Temperature control apparatus (thermostatic valves) for central heating installations; Burners; Cast metal fireplaces; Fireplaces (domestic); Central heating installations