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Hot Water Tanks
Indirect and Direct Cylinders
Combination Copper Cylinders
Economy 7 Copper Cylinders
Economy 7 Combi Water Cylinders
AGA Cylinders
Primatic Copper hot water cylinders
Gledhill Sunspeed Solar Cylinder
British Standard Water Cylinders
CondenCyl Water Cylinders
ShowerCyl gravity with mains
Horizontal Water Cylinders
Twin Water Cylinders
Cylinders Explained
Bespoke cylinders
Design your own
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AGA Cylinders
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AGA hot
water cylinders
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Hot water
copper cylinders for use with an unpumped heat
source |
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Domestic
hot water cylinders to be used with
AGA,
Rayburn,
Wood Burning Stoves
and similar unpumped heat
sources
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Gravity boiler coil - large bore
suitable for an unpumped heat source
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An 'indirect' cylinder is
designed to be heated by a remote heat source. The typical
modern gas boiler produces a pumped circuit of hot water that
will heat both cylinder and radiators. There are however devices
that can produce a circuit of hot water that is unpumped, relying
instead on 'thermo-siphoning' or 'gravity circulation' to move
the water around the system. It is important to
match the type of cylinder to the heat source - pumped (as it would be
from a typical modern boiler) or unpumped (the sort of heat source
one might expect to get from a solid fuel or wood burning stove, an AGA or
Rayburn stove). The cylinder should also be a vented type*.
* Note:
Unvented cylinders (the pressurised type that provide mains pressure hot
water - e.g. Megaflo, Stainless Lite) should not be connected to a heat source that cannot be
fully controlled - the risk of explosion exists. Mains pressure
hot water can however be achieved in conjunction with a gravity
heat source by using a device such as a
Thermal Store or a
Torrent Multifuel. For more
info please click on the links or feel free to
contact our office and we will be
more than happy to explain.
How an AGA cylinder differs
An AGA (for example) will produce
an 'unpumped' circuit of hot water relying on the
principle of
thermosiphoning (hot water rising and cooler water falling) to
create 'gravity circulation' within the system. A cylinder that
will happily accept an unpumped heat source is subtly different
from a standard cylinder in so far as the heat exchanger has a
larger diameter bore (28mm) and bigger tappings (the in and out
connections) which are spaced slightly wider apart improving the
thermal dynamics and therefore the flow.
Choose the correct cylinder for
AGA, Rayburn and Wood burning stoves
Do not connect a cylinder designed
for a fully pumped system to an unpumped system. The smaller
bore heat exchanger in a cylinder suitable only for a pumped
system would create a bottleneck and constrict the flow of a gravity system. This could
have significant implications as heat dissipation becomes strangled. Please ensure
you mention the heat source/s you intend to connect when
ordering to ensure you get the right advice and the correct
product. |
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28mm big bore boiler coil gives better gravity
flow |
28mm boiler connections facilitating larger
flow and return pipework |
22mm connections
for cold water 'feed' and hot water 'out' |
Tappings to suit
You can specify position
of connections if required
(Sketch recommended) |
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Immersion Heater side or top
Top or side mounted
immersion heater boss if and as required (please state)
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Fully
Insulated
All cylinders are supplied
insulated and fully compliant with Part L. |
Please note, the
thickness of insulation (*allow
50mm) whilst included is not stated in the dimensions.
Please ensure the cylinder will fit the space you have
available. |
Insulation upgrade
Insulation may be upgraded
to 75mm or 100mm for a small additional cost. Please
remember to add 150 and 200mm respectively when
calculating finished diameter. |
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INDIRECT Copper
Cylinders for use with AGA, Rayburn, Wood Burners and unpumped
(gravity flow)
indirect heat sources |
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Prices as of January 2013
Size and Price
list
Open vented
cylinder with large bore heat exchanger for use
with gravity flow heat source
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Gas Appliance
Guide -
Still bringing you the
BEST prices in the UK!
Somebody offered to price match?
Click here to read more..... |
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Systems that generate a a gravity heat
source are often deemed 'uncontrollable' as they cannot be turned
up/down or on/off as required (For example: Wood burning stoves). With
this type of heat source provision should be made to
'bypass', 'dump' or 'leak' heat away from the cylinder or the heat source to
prevent the risk of overheat/boiling/evaporation. One way to achieve
this is by utilising a bypass valve and heat leak radiator.
In general, but only as a rule of thumb,
it is considered that an 'entry level' cylinder in such a system should
contain at least 140 litres of water. This figure may be
different according to your hardware. Please refer to your system
specification or stove manufacturer before placing an order. |
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Capacity (litres) |
inches |
Price inc vat |
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1200 x 400 |
136 |
48 x 16 |
£300.58 |
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1500 x 400 |
170 |
60 x 16 |
£377.83 |
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1050 x 450 |
144 |
42 x 18 |
£293.54 |
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1200 x 450 |
166 |
48 x 18 |
£321.79 |
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1500 x 450 |
222 |
60 x 18 |
£413.57 |
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1800 x 450 |
268 |
72 x 18 |
£525.78 |
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1200 x 500 |
193 |
48 x 20 |
£674.87 |
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1270 x 500 |
218 |
50 x 20 |
£666.90 |
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1500 x 500 |
248 |
60 x 20 |
£681.80 |
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1800 x 500 |
276 |
72 x 20 |
£808.16 |
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1200 x 600 |
305 |
48 x 24 |
£849.03 |
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1500 x 600 |
385 |
60 x 24 |
£1,018.38 |
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1800 x 600 |
454 |
72 x 24 |
£1,187.73 |
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Upgrades and Extras |
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Immersion heater |
Incalloy type |
optional extra |
£32.00 |
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75mm Insulation |
(upgrade) |
optional extra |
£68.00 |
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100mm Insulation |
(upgrade) |
optional extra |
£132.00 |
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Additional tappings |
(i.e. shower take-off, secondary return, etc) |
Please
ask |
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Extras and additions
(please add where appropriate to prices above) |
£ inc VAT |
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Immersion Heater |
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Cylinder boss included if required, 3kW
Incalloy Immersion heater
additional extra |
£32.00 ea |
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Insulation |
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Standard foam insulation
(approx 50mm) exceeding Part L heat loss |
Included |
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Upgrade insulation to 75mm
thickness |
£68.00 |
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Upgrade insulation to
100mm thickness |
£132.00 |
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Cylinder connections |
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Drain valve (drain
cock) [Drain tapping included, if required, in
cylinder price] |
7.50 |
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High recovery boiler coil
(improves cylinder reheat time given sufficient input) |
45.00 |
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Power shower take-off |
17.50 |
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Secondary return |
12.00 |
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Compression fittings
(instead of male or female threaded bosses) |
12.00 |
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For cylinder with gravity
coil (for AGA, Rayburn, Woodburner etc) |
click
here |
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Configuring the position
of connections (please
refer to guide) |
No additional cost |
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For other modifications
please don't hesitate to
ask |
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The following represents
the full range of cylinders available with 'gravity' heat exchangers. As
mentioned, please check with your hardware manufacturer for the
recommended minimum size of cylinder for your installation. These may be
suitable for systems where the heat source has a low output. |
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900 x 300 |
55 |
36 x 12 |
POA |
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1050 x 300 |
65 |
42 x 12 |
POA |
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1200 x 300 |
75 |
48 x 12 |
POA |
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1500 x 300 |
96 |
60 x 12 |
POA |
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1800 x 300 |
114 |
72 x 12 |
POA |
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900 x 350 |
74 |
36 x 14 |
POA |
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1050 x 350 |
90 |
42 x 14 |
POA |
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1200 x 350 |
103 |
48 x 14 |
POA |
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900 x 375 |
87 |
36 x 15 |
POA |
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1050 x 375 |
103 |
42 x 15 |
POA |
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1200 x 375 |
118 |
48 x 15 |
POA |
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750 x 400 |
80 |
30 x 16 |
POA |
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825 x 400 |
89 |
33 x 16 |
POA |
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900 x 400 |
96 |
36 x 16 |
POA |
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1050 x 400 |
114 |
42 x 16 |
POA |
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675 x 450 |
86 |
26 x 18 |
POA |
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750 x 450 |
95 |
30 x 18 |
POA |
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825 x 450 |
109 |
33 x 18 |
POA |
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900 x 450 |
117 |
36 x 18 |
POA |
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All
cylinders are compliant with Part L Building Regulations. |
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