The HOTTAP can handle a bit of wind - after all it's designed to be used outside! However if it's very windy the flame inside the HOTTAP can be blown around a bit, the flame sensor will recognise this and step in to shut the unit off (you don't want gas being pumped into the unit with no flame lit!). When it's extremely windy, the best advice is to shield the top 1/3 of the HOTTAP as best you can - with some sort of awning, or better yet, enclosure which is well ventilated.
Flipping Top Vent
Now, there are times where it seems the HOTTAP keeps going out in the slightest of breezes. In our experience, this comes down to the way it's being used and where it's hanging, or being mounted.
What can happen when you have the HOTTAP hanging or mounted against a large flat surface, is that the wind can get caught against the flat surface and be directed straight down into the unit. This would amplify the effects of even a small breeze - and cause the flame to move around and the flame sensor to kick in.
The top vent of the HOTTAP has louvers facing down into the unit - which can 'catch' wind and direct it straight down into the gas burner. We can take the top vent and flip it around (by simply removing the 4 screws that hold it in place) you'll find the louvers are now facing upwards and act to push oncoming wind 'up and away' from the unit, significantly improving wind performance.
Default - Top Vent
After flipping the top vent around, the louvers are facing upwards to deflect wind away.
Blocking Side Holes:
One thing we've also found is that by blocking the side ventilation holes, we can help to mitigate the wind effects. We have tested the unit and it does not hinder the performance in any way by blocking this vents totally.
Here we have used Aluminium tape to block the vents from the inside, but you can just as effectively block them from the external side.