Below you can find all models Fortress Boilers for which we have manuals available. Also view the frequenty asked questions at the bottom of the page for useful tips about your product. Is your model not on the list? Please contact us.
Is your product defective and the manual offers no solution? Go to a Repair Café for free repair services.
Frequently Asked Questions
Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.
What is the best place to install my boiler? VerifiedThe best place to install the boiler is close to the location where the most warm water will be used (ie: bathroom). This ensures a quick supply of warm water and minimal heat loss.
This was helpful (87)
My boiler will only produce lukewarm water, why is that? VerifiedThis probably means that the thermostat is broken. Contact the manufacturer for advice.
This was helpful (74)
Is it useful to switch off my boiler during absence or vacation? VerifiedMany modern boilers are very energy efficient. During an absence or vacation that lasts 1 week or less it will take more energy to heat the water again than to keep the water at the current temperature. During absences that last longer than 1 week it might save energy to switch off the boiler.
This was helpful (44)
There is water coming from the pressure relief valve, is that normal? VerifiedYes, a boiler is a pressure vessel. When pressure gets too high, the boiler will lower this by releasing water through the pressure relief valve. The installer of the boiler should have attached proper drainage.
This was helpful (21)
What is the difference between a boiler and a gas boiler? VerifiedA boiler heats the water before you want to use it. A gas boiler heats the water at the moment that it is needed. This means that with a regular boiler, you can run out of warm water when the reservoir is empty.
This was helpful (6)