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9-19 Manor Green Road, Epsom, Surrey KT19 8RA
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Heat Bank Thermal Store
System Xcel Cylinder 28 Plate Heat Exchanger (45+ ltr/min) Directly heated from remote source 40mm Foam Insulation GX-Plan primary controls Double Cylinder Stat Arrangement Directly Pumped Heating Circuit Underfloor Primaries Fitted Primary Pump, 5m head All fitted controls are wired Thermostatic Blending Valve 1" Additional 6m Finned Coil Backup Immersion Heater Cased
2 Plate Heat Exchanger 3 Heat Exchanger Pump 4 Flow Switch 5 Thermostatic Blending Valve, Mixcall III 8 Vent 9 Store Filling Point 11 Y-Pattern Strainer (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 19 Flow From Boiler 20 Return to Boiler 23 Flow to U/F Heating Circuit 24 Return from U/F Heating Circuit 25 Flow to Radiator Heating Circuit 26 Return from Radiator Heating Circuit 27 Boiler Pump UPS 15/60 28 Heating Circuit Pump UPS 15/60 29 Heating Circuit Pump UPS 15/50 38 Cylinder Thermostat (with Immersion Pocket) 39 White Coated Steel Casing 41 Primary Blending Valve 42 Wiring Centre 44 Flow to Lower Coil, 22mm 45 Return from Lower Coil, 22mm 73 Sensor Points |
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The GXV Xcel a superb all-round performance system, originally
designed as a compact, high output hot water and heating system for
council properties. To obtain 100% useful input from the boiler, the store
is heated directly by the boiler - no coils. A feed and expansion tank
must be fitted above the highest point in the primary system. The main
advantages of the system are... No Motorised Valves for either hot water or heating - more reliable & easier to service. Very rapid recovery of store - hot water in under 3 minutes from cold. Large volumes of hot water from a small store. Maintains condensing boilers in condensing mode. Ability to bring central heating up to temperature extremely quickly (store recovered). Store acts as an ideal air separator. |
The unit is fitted with a Mixcall III Thermostatic Blending Valve, to control the hot water temperature, and prevent scalding. The graph shows the pressure drop across the valve for various hot water flow rates. The Valve is adjustable from 27°C to 67°C, and has a lockable head. |
The unit is fitted with two heat exchangers, and is capable of delivering 45 litres/minute @45°C (80°C storage). |
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. 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. |