Yes - all connections on the Tornado / Tempest range are 22mm diameter, being the required diameter to achieve flow rates to gain the best performance from the cylinder.

Yes - all unvented mains pressure cylinders require an annual service and should be installed by a suitably qualified person. Records supporting this information will be required should the guarantee be called into effect, and the booklet should be completed by the plumber/heating engineer carrying out the work.

Tornado and Tempest unvented cylinders are supplied with all necessary components, an expansion vessel and control devices as a package.

No we don’t but you can find your nearest stockist by using our on-line guide.

Yes, we produce twin coil versions of our vented and unvented cylinders with dimensions to suit many requirements.

To ensure a supply of hot water whenever it is required leave the immersion heater switched on.

There are many variables affecting the choice of cylinder, try our on-line cylinder guide within the home and family section.

Yes – with the correct type and model, contact us for further details.

If you have a vented cylinder fed from a header tank, you could consider installing an unvented mains pressure cylinder or thermal store.

Yes - all connections on the Tornado / Tempest range are 22mm diameter, being the required diameter to achieve flow rates to gain the best performance from the cylinder.

Yes - all unvented mains pressure cylinders require an annual service and should be installed by a suitably qualified person. Records supporting this information will be required should the guarantee be called into effect, and the booklet should be completed by the plumber/heating engineer carrying out the work.

Tornado and Tempest unvented cylinders are supplied with all necessary components, an expansion vessel and control devices as a package.

No we don’t but you can find your nearest stockist by using our on-line guide.

Yes, we produce twin coil versions of our vented and unvented cylinders with dimensions to suit many requirements.

To ensure a supply of hot water whenever it is required leave the immersion heater switched on.

There are many variables affecting the choice of cylinder, try our on-line cylinder guide within the home and family section.

Yes – with the correct type and model, contact us for further details.

If you have a vented cylinder fed from a header tank, you could consider installing an unvented mains pressure cylinder or thermal store.

We accept all types of payment including cash, cheque, credit or debit card and for regular customers you could try and apply for a credit account. The standard lead time on vented domestic copper cylinders is 7 to 10 working days and on advanced products 10 to 12 working days for delivery on UK mainland. Lead times will vary at holiday periods.

Send an e-mail to enquiries@telford-group.com, call 01952 257963 or fax 01 952 253452 Customer Services or write to us at Customer Services, Telford Copper Cylinders Ltd., Unit 22, Furrows Business Park, Haygate Road, Wellington, Shropshire, TF1 2FE.

The Tornado and Tempest cylinders have the same performance and efficiency characteristics and share the same stainless steel cylinder body. The Tornado is supplied with the expansion vessel fitted and the whole assembly encased in a white mild steel outer. The Tempest is supplied with the expansion vessel loose for on-site fitting and the main unit is shorter than the equivalent capacity Tornado.

There are three ‘Grades’ of vented cylinder G1, G2, G3 all are built to the same manufacturing standard, the principle difference between the three grades is the gauge of the copper sheet used. To determine the grade required measure the distance from the waterline in the header (or feed and expansion) tank serving the cylinder and the base of the cylinder. This measurement is known as the ‘working head’ and determines the grade of cylinder to be used.

Grade 1 for a working head of up to 25 metres (2.5bar pressure)
Grade 2 for a working head of up to 15 metres (1.5 bar pressure)
Grade 3 for a working head of up to 10 metres (1.0 bar pressure)

A vented cylinder is serviced from a feed and expansion tank typically sited in the roof space above the cylinder. As water is drawn from the cylinder it is replaced by water from the F&E tank. When the water in the cylinder is heated it expands and this expansion is taken up and into the F&E tank.

An unvented cylinder is typically fed from the cold mains. On unvented cylinders the dynamics of expansion and contraction of the water as it heats and cools are controlled by an expansion vessel fitted to the cylinder. Unvented cylinders are designed to work with hot water under pressure and are subject to Building Regulations governing the installation and maintenance of the cylinder.

The traditional hot water cylinder, that most of us are familiar with, uses an energy source to heat the water in the cylinder which is drawn off to feed the hot water taps and appliances. In a Thermal store the body of water in the cylinder is heated in a similar fashion but instead of the store water being used, cold water from the mains supply is passed through a coil in the cylinder. Heat from the store is transferred to the water as passes through the coil. The water from the coil is then cooled to a safe useable temperature by blending with cold water before being supplied to the hot water taps and appliances in the system.

The principle advantage of a Thermal store is the provision of hot water at mains pressure without using a mains pressure cylinder to a maximum of 3 bar.

Thermal stores are increasingly the cylinder of choice in flats and small apartments.

Tornado and Tempest unvented cylinders are supplied with all necessary components, an expansion vessel and control devices.

The current BSS standard requires that an indirect cylinder will recover, after a 70% draw off, within 30 minutes. To satisfy this requirement the installation must be capable of operating under the following conditions: The system must be fully pumped, the boiler thermostat set at 80OC with an incoming water temperature in excess of 12OC and the cylinder thermostat set at 60OC the boiler must also be correctly sized. All of our cylinders meet this requirement under BSS 1566/2002. High recovery cylinders (Typhoon Range) have a greater coil facility and are therefore capable of an even recovery time under the same conditions. (See product details for more information).

Unvented Indirect Cylinders Our range of indirect units are fitted with coils that meet the above standard and the same conditions apply. In some sizes the recovery time is further reduced. (See product details). Thermal Stores are required to maintain a store temperature of 70/75OC at all times. The size (capacity) of the unit indicates the level of blended hot water that is available from the product, this applies to either boiler heated applications or electrically heated applications by means of immersion heaters on Standard or Economy Tariff. Direct Pattern Cylinders (all types) The recovery of Direct Pattern Cylinders depends on the amount of power supplied to the cylinder by means of immersion heater(s). Direct pattern vented cylinders are supplied with one immersion heater boss.

Direct pattern 'Economy 7' (Maxistore) vented cylinders are supplied with two immersion heater bosses. Direct pattern unvented cylinders are supplied with two immersion heaters fitted. 'All Electric' Thermal Stores are supplied with two immersion heaters fitted, dual source or hot water only models are supplied with one immersion heater fitted. Under normal conditions using electricity as the only power source will increase the recovery time.

Yes - please ask for further details.

Yes we do, available in a limited range of sizes both direct and indirect patterns.

Full details of the maintenance requirements for the Tempest and Tornado Stainless Steel cylinders are contained in the installation and user guide supplied with every cylinder. Extra copies are available from us. IMPORTANT - you should be aware that Building Regulations require that the installation and maintenance of unvented (mains pressure) cylinders be carried out by a competent person who holds a recognised unvented cylinder qualification.

The Tornado and Tempest direct models are supplied with two immersion heaters.

There are many variables affecting the choice of cylinder, try our on-line cylinder guide.

Yes – with the correct type and model, contact us for further details. Not on unvented.

If you have a vented cylinder fed from a header tank, you could consider installing an unvented mains pressure cylinder or thermal store.