5.2 Wire the Immersion Heater to a suitable switched supply, fused rated to 16 amp.

5.3 Check the Immersion Heater Thermostat is set to 80°C.

6 FILLING.

6.1 IMPORTANT: SYSTEMS SHOULD BE FLUSHED AND PROTECTED IN ACCORDANCE WITH BS7593-1992. Please check Boiler and other Primary Equipment's Installation Instructions prior to filling.

6.2 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. Contact Betz Dearborn direct for method statements on 0151 424 5351 Alternatively contact Fernox on 01799 550811.

6.3 IMPORTANT: The Primary System should be fully flushed and an inhibitor, suitable for the purpose, used to protect both the primary and the Heat Bank Thermal Store systems. Betz Dearborn SENTINEL X300 should be used to flush the Primary System prior to filling new systems. Use SENTINEL X400 for existing systems. Please contact Betz Dearborn direct for method statements on 0151 424 5351, or alternatively contact Fernox on 01799 550811.

6.4 Stowaway Heat Bank Thermal Stores are filled using the Filling Loop provided.

6.4.1 Connect a short length of hose from the Manual Water Level Test/ Drain [56] into a bucket.  Open the Manual Water Level Test/ Drain [56] Connect the Filling Loop [54] to the Filling Point [9] Open the Manual Air Vent [6] - during filling, this should be shut if water is expelled. Slowly Open the Isolating Valve on the Filling Loop, and the unit will start to fill.  Fill until water is discharged via the Manual Water Level Test/ Drain [56].

6.4.2 Excess water should be drained off via the Manual Water Level Test / Drain. Any water discharged into the Overflow Chamber [8] should be drained off from drain [66]. Disconnect and cap the Filling Loop [54].

6.5 Check that all air locks in the Primary System are cleared properly, and all Radiators bled.

7 COMMISSIONING.

7.1 Set the Heat Bank Thermal Store Pump to speed 2.

7.2 Turn on the electrical supply.

7.3 Bleed all pumps as described.

7.4 Run through the operation of the system as follows:

7.4.1 Set the programmer to Hot Water ON.

7.4.2 The boiler should fire, and the primary pump turn on. Within a short time (3 minutes) the flow from the boiler should feel hot to the touch. Check that the pipework to the primary coil is also hot. The flow to the central heating should not be hot at this stage.

7.4.3 Set the Programmer to Heating ON. The flow to the heating circuit should now get hot.

7.4.4 Turn off both the Hot Water and Heating on the Programmer. The Boiler should stop firing, and the primary pump stop - on systems where the boiler uses a pump over-run, the pump may not turn off for a few minutes.