Heating Systems
Accumulator Tanks
These are necessary for the boiler to operate to optimum efficiency by carrying out the
following three functions:-
1. To act as a heat store allowing the boiler to run for longer periods whilst charging the
tank as these are the ideal operating conditions for biomass boilers.

2. The tank absorbs heat from the boiler when in stand by mode e.g. 25kW will give off 5
kW/h and the tank will absorb this even when fully charged.

3. The tank acts as a thermal store between the boiler and the heating system. This allows us to
undersize the boiler so when the heating and/or hot water heating is turned on
and is drawing more heat than the boiler can supply the heat that is stored in the tank can
be slowly used up and then replenished later – perhaps overnight.

It is very important to maintain the layering of the hot water inside the tank –
‘stratification’. This means a distinct layer between very hot and warm water and this is
achieved by the Laddomat thermoregulator when filling the tank.


For more details on these tanks please look at their website www.dzd.cz/en

Please click here to download a leaflet about this product(PDF files)




Accumulator Tanks - Akvaterm


We also have a distribution agreement with Akvaterm for their accumulator tanks.

Akvaterm tanks have seamless polyurethane insulation which gives extremely low heat loss
They are excellent choice for maintaining heat store when the accumulator tank has to be housed in a garage or an out house where you want to keep heat loss to a minimum. If you were to use thermal imaging when the tank was full of your primary hot water the only heat loss would be with the guide pipes coming to and from the tank.

They can offer tanks from 300 litres to 5000 litres. It is possible to have 2 pressure ratings either 1.5 Bar or 3.0 Bar depending on your installation. An excellent feature is that you can have a DHW coil tested to 10 Bar which can produce 35 litres per minute hot water without any need for an expansion tank on the hot water circuit.

There is the facility to include immersion heaters if required in either 3kW, 6Kw or 10kW depending on the tank capacity.

It is also possible to include a pre-heat coil at the bottom of the tank that can be plumbed to a back up heat source (oil,gas,solar).

The guide pipes are on the side of the tank reduces the height required for installation.

There are also space saving cylinders 810mm that can fit through a standard 850mm doorway and oblong tanks that can be used where there is a height restriction but a good capacity of thermal store is required.

For more details on these tanks please look at their website www.akvaterm.fi



Please click here to download their brochure(PDF files)


Operating and instruction manual (PDF file)


For futher installation instructions on installing an Akvaterm accumulator tank on an open or closed system please see the following (PDF file)




   
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