a modern gas boiler for natural gas, installed in a boiler room lined with ceramic tiles, visible 120 liter hot water tank and und

120 automatic boiler boiling box burner ceramic circulation clutch collector control copper coupling energy equipment floor fuel gas gauge glandless heat heater heating hot house hydraulic installed lined liter manifold modern motor natural pipe pipeline pipes plumbing pressure pump room sensor softener steam switchboard synchronous tank temperature thermal thermostat tiles tube underfloor valve visible warm water