What is a Combination hot water
A combination cylinder (also known as
a Fortic Tank) is one
that incorporates a cold water header compartment that one would
normally associate with a separate header tank. The convenience of a
simple one-piece installation is clear and the design lends itself
to properties like flats or apartments where a lack of loft space
makes it difficult or impossible to site a header tank.
Drawbacks of combination type
hot water cylinders
Combination cylinders are not the best
solution to all installations. Resulting hot water pressure from a
combination cylinder is generally poor because the header section
(the bit that creates gravity pressure on the
cylinder) is at such a low height.
(note: the higher the header from the outlet point, the higher the
pressure due to gravity)
The low pressure associated with
combination cylinders can be frustrating. Mixer showers tend to
suffer noticeably. The temptation exists to install a booster pump
to improve performance, but consider carefully before you do so. The volume of cold water contained within the header can
often prove inadequate to keep up with the extreme demands of a
booster pump so you risk running your system dry fairly quickly.
This is not good for the booster pump and can cause damage.
All cylinders are fully insulated with a thermally
advanced and environmentally friendly jacket, offering continued
high performance throughout the life of the cylinder. At the end of it's
life the insulation decomposes so it's also environmentally friend too.
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