Q: I am looking to buy an unvented cylinder and wondered whether it would come complete with expansion vessel and control devices?
 
  A: Tornado and Tempest unvented cylinders are supplied with all necessary components, an expansion vessel and control devices.
 
Q: Where can I find details of reheat times for your various cylinders?
 
  A: 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.
 
Q: Do you produce a thermal store capable of running an under floor heating system and be connected to a solar system?
 
  A: A. Yes - please ask for further details.
 
Q: Do you supply horizontal unvented hot water cylinders?
 
  A: Yes we do, available in a limited range of sizes both direct and indirect patterns.
 
Q: I have been asked if I can carry out maintenance on a Tornado stainless steel indirect unvented cylinder, what procedures would this entail?
 
  A: 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.
 
Q: Does the Tornado stainless direct unvented unit have 1 or 2 immersion elements?
 
  A: The Tornado and Tempest direct models are supplied with two immersion heaters.
 
Q: What type and size of cylinder is the best to buy?
 
  A: There are many variables affecting the choice of cylinder, try our on-line cylinder guide.
 
Q: Can I use your cylinders with an Aga/Raeburn range?
 
  A: Yes – with the correct type and model, contact us for further details. Not on unvented.
 
Q: I cannot get sufficient pressure/flow rate, what can I do?
 
  A: If you have a vented cylinder fed from a header tank, you could consider installing an unvented mains pressure cylinder or thermal store.