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FAQ - Frequently Asked Questions
ErP September 2015
All topic questions
Prevent limescale from damaging your boiler
What causes limescale?
What can limescale do to my boiler?
How can I reduce buildup of limescale in my boiler?
How do ACV Tank-in-Tank water heaters reduce the buildup of limescale?
How can I find out if I live in a hard water area or not?
How do I get rid of scale in my boiler if it has built up?
All topic questions
ACV History
What does ACV stand for?
When was ACV established?
How did WWII affect ACV?
How has ACV grown over the years?
Is ACV a family business?
Which countries sell ACV Products?
When did ACV join Groupe Atlantic?
All topic questions
Browse our FAQs by topic
Electric boilers
What is the electrification of heat?
How are we seeing electric boilers being used?
How do our customers use electric boilers?
Accurately sizing a domestic hot water system
Why is it important to correctly size a domestic hot water system?
What guides and methods are currently used for sizing domestic hot water systems?
What are loading units?
What are the issues with the existing methods for sizing domestic hot water systems?
What data is there to back this up?
What is the best way to accurately size domestic hot water systems?
What are the benefits of a dynamic DHW system?
What is an example of a dynamic system design?
Want to know more?
Tank-in-Tank Technology
Tank-in-Tank: what is it?
The benefits of the “Tank-in-Tank" system
The “Tank-in-Tank" type combined boiler and water heater: what is it?
The “Tank-in-Tank" type combined boiler and water heater: how does it work?
What is an unvented kit and flow through expansion vessel?
What is an unvented hot water system?
What are the benefits of an unvented system?
What is an unvented kit?
Which unvented kits are available from ACV?
What are expansion vessels?
How do expansion vessels work?
What are flow through expansion vessels?
What are the benefits of flow through expansion vessels for unvented kits?
What materials are used in expansion vessels?
Which expansion vessels are available from ACV?
KIWA and UK Water Regulations
Which regulations cover water systems and components?
What tests must a product pass to be certified as meeting regulations?
Which certification will tell me that a product has passed the relevant tests?
What is KIWA?
How does Kiwa KUKreg4 work?
Is WRAS also a mandatory requirement?
Which ACV component products are KIWA approved?
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