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Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3629
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
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We have a Potterton Promax 15 SE boiler which we are very

Customer Question

We have a Potterton Promax 15 SE boiler which we are very pleased with but whenever there is a heavy storm rain water gets into the boiler from the flue on the outside of the property which floods it and it stops working. Is there something that can prevent this happening
Submitted: 2 years ago.
Category: UK Plumbing
Expert:  Andrew Smith replied 2 years ago.

Here is a link to the instructions;

Expert:  Andrew Smith replied 2 years ago.

Page 19 shows the plume management kit, these are normally used to discharge products of combustion away from building openings.

These can also be used to turn the flue away from the prevailing wind and driving rain.

Expert:  Andrew Smith replied 2 years ago.

I hope this helps

Customer: replied 2 years ago.
Looking at page 19 in the manual, the water is getting in through the air inlet. The top section of the displacement kit has been turned 90 degrees to face away from wind and rain but the air inlet is facing the elements head on. We've had this problem 3 times in the last 3 months. Any money we have saved in having an efficient boiler is being spent on call-out charges to our gas engineer
Expert:  Andrew Smith replied 2 years ago.

You could put a shield in front of it if you can get to it, but it would have to be on legs from the wall so you have at leat 100mm between the air inlet and the back of the shield.

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