... c. Suitable for different types of gas,rated gas pressure(Pa),LPG-2800,NG-2000,COAL GAS-1000;d. Environment friendly,CO(a ... heat efficiency.f. 10 protection functions;g. Remote controller and room temperature thermostat is optionalh. The main integrated controllern is compatible ... heating and ventilation system including radiators, floor heating, fan coil wall mounted gas room heating boiler