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Direct
and Indirect Economy 7 cylinders with combined cold water
compartment
An Economy 7 cylinder is designed to exploit 'off-peak'
electricity, typically available through the night.
An E7 Combination cylinder combines a cold
water header compartment at the top of the cylinder (removing the need
for a separate header tank) and heats the water in the main body using electrical
immersion heaters.
A feature of an E7
cylinder or tank is the addition of a second immersion heater (unlike a
standard direct cylinder that only has one). The lower of the two
elements is typically connected to the economy supply/tariff, the upper
heater is usually used as a boost element and operated manually when
demand for hot water exceeds that stored. Our cylinders are supplied with the two
immersion heater bosses (the bit you screw the heater into) but
immersion heaters are sold separately. Please enquire.
Because you are
heating your cylinder overnight it is important to not to loose the stored
heat by the morning. Economy 7 cylinders are therefore fitted with an extra thick jacket of
insulation - typically 60mm thick, as opposed to the 30mm jacket on a
standard cylinder.
The insulation, known as Envirofoam,
Exceeds the expectations of Part L of the Building Regulations.
Furthermore, because it is biodegradable it will cause no future harm to
the environment.
And
the cost? You be delighted to know that our cylinders are not only
cheaper to buy, the high performance insulation contributes towards a
cylinder that's cheaper to run.
Value, Quality, Efficiency and Discount !
PLEASE NOTE:
Economy 7 cylinders have approx 60mm thick insulating jacket for enhanced
performance. You must add 120mm to the diameter shown for the overall dimension
of the finished cylinder.
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