Are you reading something different to what I'm reading?Are you deliberately ignoring what D_Hailsham wrote? Or just arguing with someone that nobody else can see, because nobody posted what you're disagreeing with?
The max consumption, according to the data in the Installation Manual, is 1.8 m3/hr. It looks as if they are quoting net figures.An impossibility for OUTPUT rating to exceed INPUT rating.
So we have an appliance on max rate consuming 1.7 m3/hr of gas although actually burning 1.8 m3/hr???
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local