... control,energy saving, 3.temperature displayer, 4.used for room heating and hot water Model JLG18JLG20JLG24JLG30JLG40Rated heat inputkW1820243040Heating efficiency%90%90 ... and multi-functional diagnostic function c. Suitable for different types of gas,rated gas pressure(Pa),LPG-2800,NG-2000,COAL ... GAS-1000;d. Environment friendly,CO(a=1)exaust-0.017%e. Heat efficiency and energy-saving, ...