Plumbing and Heating
Combination
Boiler
If you don't have a heavy demand for hot water in your home,
but like the idea of having an endless supply of hot water
available on tap, then a combination boiler could be the answer.
A combination boiler heats the water instantaneously providing
heating and hot water from one unit. They produce hot water
upon the turn of a tap, so there is no requirement for roof
tanks or for hot water cylinders. This helps to save on running
costs and reduces the need for space, as you don’t need
a cylinder to store hot water until it’s needed.
Consideration needs to be given to many aspects of the installation
of new and replacement boilers. Among the most important are
ventilation and flueing. Ventilation requirements depend on
many factors, is the boiler open flued or room sealed, in
a compartment or in the garage? Different installations require
different amounts of ventilation. It is essential that the
correct ventilation be provided.
The flue from a boiler and especially its termination are
also important considerations. Many restrictions apply as
to exactly where a flue can terminate.
 What
is a System Boiler?
System boilers work in conjunction with hot water cylinders
by heating the water that is to be stored within the cylinder
and feeding the central heating system from one energy efficient
source.
An expansion tank and pump are built inside the appliance.
By building in components, which most other boilers situate
outside the unit, system boilers can provide a very neat and
attractive installation, and a feed and expansion tank in
the roof is no longer needed.
They can be either floor standing or wall mounted with a
large range of flueing options. More commonly gas boilers
are wall hung with fan-assisted flues.
Hot
Water Cylinder
Boilers with a storage tank (hot water cylinder) are more
capable of coping with the demands of multiple use and can
deliver water at a high temperature and at a high flow rate
too and remove the need for separate cold water storage in
the roof. Unvented tanks allow mains pressure water delivery,
rather than relying on gravity as traditional open vented
systems do, and the possibility of contamination or corrosion
is seriously diminished due to system being “sealed”
off to the open air.
The advantage with this type of system is that central heating
and hot water can be provided simultaneously. Hot water is
stored in the cylinder until required, and then drawn off
for use around the home. The drawback with this system is
that once all the hot water has been used up, it takes time
to heat more.
Additional information
If you cannot find what you are looking for or need further
assistance on bathroom layouts, please contact
us.
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