The range of Solar Heat Bank Thermal Store units has been specifically designed to provide high performance and quality hot water and central heating services, while making the best use of modern solar technology.  

Heat Bank Thermal Stores, factory-fitted with all the necessary system controls, allow builders and local authorities to specify the type of system they would like, safe in the knowledge that the entire system is supplied fully assembled, wired and tested, and backed by years of experience in system design.  

Heat Bank Thermal Stores are manufactured with the installer in mind, the aim being to reduce the amount of on-site labour to a minimum.  Units are supplied with comprehensive installation instructions, as well as installation check lists to ensure that the final system is put together and working perfectly.  The use of a pre-fabricated system also enables end-users and service engineers to obtain technical information and servicing backup from a central source. 

The addition of solar capability to the existing Heat Bank Thermal Store system allows householder to take full advantage of free energy provided by the Sun.  The Heat Bank Thermal Stores are designed for connection to virtually any type of solar panel on the market, storing thermal energy within the Heat Bank Thermal Store to provide hot water when required. 

Where solar is not required, we believe that it is important to have the capability to add it at a later date without removal of the existing system.  Therefore, we have designed the Solar Heat Bank Thermal Stores in such a way that the unit can be supplied without the solar controls, but with the coil, connections, and wiring to enable solar to be added whenever desired. The cost to the end user of installing solar is greatly reduced, making it economically viable, especially when considering the large reductions in energy bills that will result.
The Solar Heat Bank Thermal Stores have been designed to run with any panels, either flat plate or evacuated tube. 

Following extensive research into the systems on offer, we have chosen the NEG SUNTUBES as our preferred 'performance' panel, made by the same company, NEG, that probably manufactured the vacuum tube for the screen you are looking at. The tubes carry a full FIVE year guarantee, however a life span of 25 years is reasonable to expect.

As an alternative we can offer an AES Flat Plate Collector.  This panel provides a more cost-effective solution, costing less than the SunTubes, while still providing good solar performance.

DeltaPro.jpg (46543 Byte) The system is supplied with the latest Resol solar controller allowing the use of either flat plate or evacuated tube collectors, while providing the ancillary functions required for a host of solar system layouts, including twin panel or even twin store systems.

The following table summarises the standard units.  

Unit Code

Capacity
(litres)

Diameter
(mm)

Height
(mm)

No. of Heat
Exchangers

Hot Water
Flow Rate
(ltr/min @ 42C)

Fitted Solar
Controls

J1097-210-1

210

450

1850

1

30

Yes

J1097-210-2

210

450

1850

2

45

Yes

J1097-250

250

450

2050

2

45

Yes

J1097-210-1-B

210

450

1750

1

30

No

J1097-210-2-B

210

450

1750

2

45

No

J1097-250-B

250

450

1950

2

45

No

 

Note: All controls are fitted and wired unless otherwise stated.

Store:

Made to BS2870, BS1845, BS864 Pt II, BS1566
Feed & Expansion Tank with anti-evaporation plate
Fitted Ball Valve to BSS 1212 Part II
Overflow Connection (supplied loose)
Mains supply to Ball Valve with Isolating Valve
Plastic Lid with straps
40mm Insulation 
Drain-Off Cock

Hot Water:

Plate Heat Exchangers to provide instantaneous heating of mains water to give potable hot water supplies without the need for cold water storage (see table)
Thermostatic Blending Valve (22mm)
Heat Exchanger Pump (Grundfos UPS15-50, 3 speed, 5 metre head)
Tectite Gravity Flow Switch (22mm)
2" Backup 3kW Incaloy Immersion Heater 
Scalemate Magnetic In-Line Scale Inhibitor (supplied loose)
Y-Pattern Strainer (supplied loose)
Hot water recovery controlled by Danfoss CP715 (see primary controls)

Primary Controls:

Primary Heating Coil
Danfoss CP715 Programmer - 2 channels (hot water & heating)
Primary Circulating Pump (Grundfos UPS15-60, 3 speed, 6 metre head) with 28mm isolating valves.
Danfoss 22mm Zone Valve for Hot Water
Danfoss 28mm Zone Valve for Heating
Automatic Air Vent on flow to primary coil
Balancing Valve (22mm) on flow to primary coil
By-Pass (22mm) between boiler flow and return
All primary pipework in 28mm except flow and return to primary coil
Danfoss ATC Cylinder Thermostat
Danfoss RMT230 Room Thermostat (supplied loose)
PCB Wiring Centre

Solar Controls:

Solar Heating Coil with 1m2 surface area to be connected to Solar Panels
Solar Circulating Pump (Grundfos UPS15-60, 3 speed, 6 metre head)
Flow Meter / Balancing Valve
Non-Return Valve
Automatic Air Vent on coil
Filling Loop
3 Bar Pressure Relief Valve with Pressure Gauge
8 litre Expansion Vessel
Resol Delta PRO Solar Controller
Solar Cylinder Thermostats
Solar Panel Thermostats (supplied loose)
Spare connections (3/4" FI) for solar heat dump or second solar store


The Solar Heating Coil is situated in the lowest part of the Heat Bank Thermal Store, to enable the Solar Panels to contribute heat to the entire volume of store water. Two thermostats fitted onto the side of the Heat Bank Thermal Store, in conjunction with a thermostat fitted onto the panel, tell the Solar Controller when the panel is hot enough to contribute heat to the store water. If conditions are suitable, the controller will switch on the Solar Pump, circulating water through the solar system pipework. Heat will be transferred from the panel into the store water via the solar coil.

The Heat Bank Thermal Store is fitted with a Primary Heating Coil which is connected to a remote boiler. This will provide the top-up of heat to bring the water in the upper half of the Heat Bank Thermal Store up to 80C. The boiler is also used to provide central heating as required. Zone valves divert the flow from the boiler either to the heating coil, the radiator circuit, or both, depending upon the system demands as set by the Programmer.

The Heat Bank Thermal Store is fitted with a 3kW Immersion Heater to act as a backup. This will require site wiring with heat resistant cabling.

The Heat Bank Thermal Store cylinder itself is fully vented, with its own Feed & Expansion Tank. The water in the Heat Bank Thermal Store does not mix with the Solar System Water, the Primary Water, or the Domestic Mains Water. 

A Thermostatic Blending Valve allows the temperature of the hot mains supply to be limited to a pre-determined temperature between 30 and 65C as set by the installer/occupier. The setting may be locked to prevent tampering.

A 22mm Y-Pattern Strainer is supplied loose for site fitting close to, and down line of, a Mains Isolating Valve. A Magnetic Scale Inhibitor is supplied loose, and should be installed immediately following the Y-Pattern Strainer, and no closer than 1 metre from the connection to the Heat Bank Thermal Store. The Mains Isolating Valve, Strainer & Scale Inhibitor must be fitted in an accessible and clearly visible location within the cylinder cupboard.