Dont know what the regs are in Portugal, but you couldn't install it legally in GB. - Best bet is to contact Ravenheat fot the appropriate parts and get a qualified engineer to install it, if its legal to do so in Portugal.
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.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local