Johnson & Starley Ltd.
Rhosili Road, Brackmills, Northampton NN4 7LZ

Tel: 01604 762881   Fax: 01604 767408

Heat Bank Thermal Store SYSTEMS
Specification 1780-1
Copyright DPS 21/08/00

Heat Bank Thermal Store System  
Everest combination unit  
Twin heat exchangers (45 ltr/min)  
Indirect  
35mm Foam Insulation  
High duty primary coil  
All fitted controls are wired  
Thermostatic Blending Valve 1''  
Additional 6m Finned Coil  
Backup Immersion Heater  

Unit Code

1780.1.1

Capacity [litres]

250

Base Diameter [mm]

450

Overall Diameter [mm]

520

Height [mm]

1980

1   Integral Feed & Expansion Tank
2   Plate Heat Exchanger
3   Heat Exchanger Pump
4   Flow Switch
5   Thermostatic Blending Valve, Aquamix 1"
6   Manual Air Vent
8   Filling Vent
9   Feed to Ball Valve
10  Isolating Valve
11  Y-Pattern Strainer (supplied loose)
12  Overflow (supplied loose)
13  Cold Feed / Expansion
14  Immersion Heater 3kW Incaloy with Stat
16  Cold Mains In, 22mm
17  Hot Mains Out, 22mm
18  Drain Cock
21  Flow to Primary Coil
22  Return from Primary Coil
40  Tight Fitting Lid
42  Wiring Centre
44  Flow to Lower Coil, 22mm
45  Return from Lower Coil, 22mm

 
Notes..
The unit is fitted with two heat exchangers, and is capable of delivering 45 litres/minute @45°C (80°C storage).
The unit has two coils, a standard (upper) coil for connection to a boiler, and a finned (lower) coil for connection an Arga cooker.  Depending on the output of the Arga cooker and the length of connecting pipework, a circulating pump may be required.  It is worth noting that it is possible to connect an Arga directly to a Heat Bank Thermal Store, without the need for a coil - details upon request.
A Mains Water Isolating Lever Valve must be fitted within the cylinder cupboard, in clear view and easily accessible. A Strainer (supplied loose) must also be fitted, down stream of the isolating valve, to protect the flow switch [4].
It is advised that the mains water is tested for hardness. In areas of hard water, we advise the use of a scale inhibitor.
It is important that SENTINEL X100 Inhibitor is used to protect the Heat Bank Thermal Store.  Use 1 litre per 100 litres of stored water. Label the unit as protected with the label provided.
A suitable anti-freeze, such as X500, should also be added when there is a chance that the unit will be left filled and unheated in freezing conditions. Please note, however, that adding anti-freeze into the store will not protect mains water pipework from freezing - these should be protected separately (either by draining or by the application of trace heating).