The HEATBANK PANDORA

From Heatweb Wiki
Jump to: navigation, search

With thousands sold to local authorities and house builders, the HEATBANK® PANDORA is our most successful product to date. Its ability to deliver mains pressure hot water without discharge pipes or annual safety checks, together with the range of pre-fabricated options makes it a dream to install, just about anywhere.

  • Mains pressure domestic hot water
  • No discharge pipes
  • Unpressurised storage
  • Maintenance free

There are always circumstances where stored heat is required in a property, be it to reduce load on the primary supplies, deliver exceptional hot water loading, or provide electric backup of hot water using an immersion heater.

The HEATBANK® PANDORA Thermal Store is a patented thermal store with a unique benefit - it has no need for a discharge pipe for either hot water or heating. This makes the system perfect for high rise developments where the routing of discharges is an issue.

There are various configurations available with the simplest using electric immersion elements to drive both hot water and central heating. An unvented version is available to allow heat input from a local boiler, or there is the HEATBANK® PANDORA DISTRICT which can be connected to a district heating network.

HEATBANK® PANDORA Electric

The HEATBANK® PANDORA...Plug-n-play, mains pressure hot water without discharge pipes or annual safety checks

HEATBANK® PANDORA HB2000

The HEATBANK® PANDORA HB2000, Heating with mains pressure hot water without discharge pipes or annual safety checks

The HB2000 was originally used by local authorities connecting properties to the Economy 2000 Tariff from Scottish Power, and the system was one of the very first approved for use with the tariff.

It provided for the majority of hot water and central heating to be run with a cheap rate tariff available, but with enough storage to carry the load through periods of peak rate, or even no electricity.

Various immersion heater options are available to cover differing heat inputs, as well as the usual range of central heating control options, and the HB2000 can be combined with other systems such as wood burners (using a HEATBANK® XCEL) to act as a backup to the primary heat source.

HEATBANK® PANDORA Indirect

The HEATBANK® PANDORA Indirect, Indirectly heated through a primary coil with mains pressure hot water without discharge pipes or annual safety checks

The HB2000 was originally used by local authorities connecting properties to the Economy 2000 Tariff from Scottish Power, and the system was one of the very first approved for use with the tariff.

It provided for the majority of hot water and central heating to be run with a cheap rate tariff available, but with enough storage to carry the load through periods of peak rate, or even no electricity.

Various immersion heater options are available to cover differing heat inputs, as well as the usual range of central heating control options, and the HB2000 can be combined with other systems such as wood burners (using a HEATBANK® XCEL) to act as a backup to the primary heat source.

HEATBANK® PANDORA District

The HEATBANK® PANDORA District...District heating connected, mains pressure hot water without discharge pipes or annual safety checks

Originally developed for two major projects, the HEATBANK® PANDORA District opens up the option of connecting stored water to a district heating system. This makes it suitable for multi-occupancy dwellings such as student halls, or high end apartments where outstanding performance is expected for high-powered shower installations.

Various options are available including immersion heaters for back-up heat, heat and water meters together with our Node-HIU system for monitoring the performance and settings remotely.

Adobe-pdf-icon.jpg

HEATBANK PANDORA District Case study

Plate Heat Exchanger Versus Coil for DHW Performance

Plate heat exchangers (P.H.E’s) give a huge performance benefit to the Thermal Integration HEATBANK®. The following graph shows the output of a HEATBANK® compared to a well-known make of coil type thermal store.

Upload 5682 Compare.png

The graph demonstrates two key differences between plate heat exchangers and coils and details the temperature of water provided over time, with taps running at 18 litres per minute (a good bath tap).

The first is how the output temperature from a coil type thermal store drops as the thermal store cools down. The performance of hot water coils is usually quoted for the initial draw off, when the store is at full temperature, and it is important to know that this is not the true picture.

At 18 litres per minute, the coil delivers approximately 90 litres before performance drops off.

By comparison, the Heat Bank draws water from the top of the store, returning it cold to the bottom, and hot water temperatures are maintained until nearly all the stored heat is utilised resulting in 200 litres of hot water from the same size 180 litre store.

The Heat Bank will generate hot water to taps in only a few minutes from cold start. A coil type store has to wait until the majority of the store is heated.

Plate heat exchangers have far more power to generate hot water. The standard exchanger on the HEATBANK® Xcel is capable of generating over 100kW of mains hot water, over 40 litres per minute, and at pressures up to 10 bar. In order to get anywhere near that level of performance, a coil would need to be so large that the cylinder itself would need reinforcing to carry the weight of it!

Another big disadvantage of coils is limescale. In hard water areas coils scale up rapidly, becoming unusable within a year in some instances. This is a result of the coil constantly sitting in hot water and the fact that the mains water inside the coil heats up to store temperatures. At these temperatures limescale rapidly deposits and if not serviced will result in the coil becoming unusable and the cylinder may have to be changed. On a HEATBANK® however, the heat exchanger sits externally to the store and is not submerged in hot water. It is still possible for a plate heat exchanger to scale up, but it is far more gradual and far easier to service.


  • Plate heat exchangers can produce approximately twice as much hot water from the same size store fitted with a hot water coil.
  • Plate heat exchangers can generate higher flow rates at higher pressures,
  • Plate heat exchangers function to full performance with only small volumes of the store heated, allowing the use of an economy mode, and providing hot water within minutes of a cold start up.
  • Coil type stores suffer badly from limescale depositing within the coil.


The following image sums up some key differences. The coil type store (on the left) stops working once the store has cooled a reasonable amount, and tap temperatures become luke warm. By comparison, the HEATBANK® system (on the right) will still drive full load at full temperature, and pulls far more heat from the stored water.


Coilhxcompare.png

Pandora Vs Unvented

Adobe-pdf-icon.jpg

Pandora Vs Unvented Cylinder
The Pro's and Con's of a HEATBANK® Pandora against an Unvented cylinder

Installation Instructions

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric ANA

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric ABBAA

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric ABKAA

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric ABCDA

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric ABLAB

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric ABKAB

Pandora OandM Manual Cover.jpg

Installation Instructions for the Pandora Electric APA