Ua ntej yuav txhim kho lub rhaub dej, nws yog ib qho tsim nyog yuav tsum tau khaws chaw thiab qhov chaw flue, thiab dai phab ntsa-dai boiler lub cev yuav tsum yog.
Sim tsis txhob siv cov yeeb nkab sib txuas hnyav hauv qab ntawm boiler.
Nruab lub rhaub dej kub tswj kev hloov vaj huam sib luag raws li cov lus qhia, thiab lub ntsuas hluav taws xob hloov kub yuav tsum tau nruab rau hauv qhov cua sov ua haujlwm thaj chaw kom tswj tau.