Hi, we have a rental property and wish to install a shower cubicle adajcent to the boiler cupboard where the sink is ( bath will be removed, sink removed and resited) The cupboard to the right of the attached pic houses a combi boiler. Can we install the cubicle next to this cupboard? I am unsure about how zones apply if there is a cupboard around the boiler. Thanks in advance for any info!

