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. |
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 |
Diameter |
Height |
No. of Heat |
Hot Water |
Fitted Solar |
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) | |
2¼" 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 80°C. 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 65°C 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.