Pump stations and controls
Solar water heating controls
The Worcester Greenskies controls use a simple temperature difference to define when the pump runs. The temperature in the panel must be 8ºC higher than the store for the pump to start running. This will continue until the panel temperature gets to 4ºC above the store and then the pump will stop. This ensures that the pump is only running when the benefit from the solar panels is available.
There are 2 Worcester solar controllers available to complement both Greenskies evacuated tubes and flat plate.
The standard controller is the TDS100. The TDS100 features 3NTC sensor inlets and a clear LCD graphic display with a pictogram menu. The controller can also control the modulation of the pump station to save energy consumption.
The TDS300 is a multi-function, modulating controller which is suitable for use with a wide range of system configurations, including East/West splits and properties with swimming pools. It incorporates 8 NTC sensor inlets and a scrollable full text menu with 27 pre-figured systems with display pictograms. The TDS300 can also modulate the pump station to save energy consumption. The TDS300 can accommodate an additional cylinder sensor or additional panel sensors – also necessary for East/West split systems.
Boiler control integration
There are also control options available which will integrate the solar controller with a Worcester intelligent boiler controller. An ISM1 module is required in conjunction with either an FR110 or FW100 controller.
A special interface that enables the hot water system to take heat from the panels when the sun is shining and then bring the boiler back on when there is not enough sunshine available. Compatible with Greenstar system boilers with an integral diverter valve. ISM1 must be used with the FR110 or FW100 and negates the need for a specific solar controller.
FR110 and FW100
Part of the Worcester FX boiler control series. Either of these boiler controls can be used with the ISM1 to optimise the combination of the boiler and solar. Please see the Worcester Controls series Technical and Specification brochure for more information.
Solar water heating pump stations
There are 3 pump station categories to choose from – the AGSe single line pumps, the AGS twin line pumps and the AGS controller integrated pumps. All 3 pump stations are compatible with evacuated tubes and flat plate panels.
AGS5e Single Line Pump Station
AGS5e: Ideal for where space is limited (i.e. airing cupboards) or to minimise the use of pipe work when the cylinder is sited far away from the pump station. The AGS5e is a basic single line pump station which can be modulated when combined with either the TDS100 or TDS300 controller. It features a 6 bar pressure relief valve and 15mm connections. It can also be used with an AGS twin line pump station for an East West split*. The AGS5e is a cost-effective solution that can accommodate up to 5 flat plate collectors and 24 tubes.
AGS10e: As per the AGS5e, except it has 22mm connections and can save costs accommodating between 6 and 10 flat plate collectors and 30 to 60 tubes.
AGS5 Twin Line Pump Station
AGS5: Standard pump station with integrated air separator to aid commissioning and maintenance. The AGS5 pump station also can be modulated when combined with either the TDS100 or TDS300 controller. It features a 6 bar pressure relief valve and 15mm connections. It can also be used with an AGSe twin line pump station for an East West split*. The AGS5 can accommodate up to 5 flat plate collectors and 24 tubes.
AGS10: As per the AGS5, except it has 22mm connections and can accommodate between 6 and 10 flat plate collectors and 30 to 60 tubes.
Also requires a TDS300 controller.
AGS controller integrated twin line pump station
AGS5/TDS100: twin line pump station with TDS100 controller for space saving and installation ease. Pump station features a 6 bar pressure relief valve and 15mm connections and can accommodate up to 5 flat plate collectors and 24 tubes.