9-19 Manor Green Road, Epsom, Surrey KT19 8RA

Heat Bank Thermal Store System  
Pressurised GX Cylinders 
28 Plate Heat Exchanger (45+ ltr/min) each
40mm Foam Insulation  
Danfoss VMV20 GX Control Valve  
Underfloor Primaries  
35mm Heating using UPS25-55  
Fitted Primary Pumps 
All fitted controls are wired  
Backup Immersion Heater  
Cased  

 

Unit Code	XC-250-4029-2A	XC-250-4029-2B
Capacity [litres]	210	210
Base Diameter [mm]	450	450
Overall Diameter [mm]	530	530
Height [mm]	1750 + 80	1750 + 80

Key to drawing:

2   Plate Heat Exchanger  L18-28
3   Heat Exchanger Pump UPS 15/60
4   Flow Switch
7   Automatic Air Vent
9   Store Filling Point
11  Y-Pattern Strainer (supplied loose)
14  Immersion Heater 3kW Incaloy with Stat
16  Cold Mains In, 22mm
17  Hot Mains Out, 22mm
18  Drain Cock
19  Return from Boiler, 28mm
20  Flow to Boiler, 28mm
21  Flow to Second Store 22mm
22  Return from Second Store 22mm
23  Flow to Radiator Circuit, 35mm
24  Return from Radiator Circuit, 35mm
25  Flow to Underfloor Circuit, 22mm
26  Return from Underfloor Circuit, 22mm
27  Boiler Pump UPS 15/60
28  Radiator Pump UPS 25/55
29  Underfloor Pump UPS 15/60
30  Boiler Return VMV20 Blending Valve
38  Cylinder Thermostats
41  Underfloor Blending Valve
42  Wiring Centre
54  Filling Loop (disconnect after use)
77  Pressure Limiting Valve, 1 Bar
78  Pressure and Temperature Gauge
79  Pressure + Temp Relief Valve  2.5 bar 90°C

A primary expansion vessel of at least 36 litres capacity, and with a 1 bar pre-charge pressure, must be connected to the return from the radiator circuit.  There must be no valves, either manual or automatic, between the store and the vessel.

Both units are fitted with an L18-28 plate heat exchanger for production of domestic hot water.  Each is capable of providing over 45 litres per minute of hot water, providing the mains water supply can keep up.  

Should the mains water supply be unable to keep up, then some form of mains booster kit will also be required.
  
Additional spare bosses, as well as additional forms of protection against low pressure and low water level may be specified at extra cost.

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. 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.