"nazivna izhodna moč (izražena v kW)": maksimalna toplotna moč, za katero proizvajalec navede in zagotavlja, da jo je mogoče ob doseganju izkoristka, ki ga navede, doseči med neprekinjenim delovanjem;
"effective rated output (expressed in kW)": the maximum calorific output specified and guaranteed by the manufacturer as being deliverable during continuous operation while complying with the useful efficiency indicated by the manufacturer;