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I had a quick look in section 7, it doesn't specify IP requirements for outside of zone 2. However it seems fairly logical that you'd want something splash proof and something that won't get damaged by steam over time. Because the water part of the IP code (second digit) generally seems to refer to jets of water, then to submersion, it's a bit hard to interpret what would suit best, but in my mind, IP65 which is dust tight and protected against low pressure jets from all directions seems fairly sensible.
It’s outside of zone 2. So technically it’s ok. No protection against water doesn’t sound ideal though.