2.3.2 The Model Water Bye-laws, the local Water Undertaking Bye-laws and the I.E.E. Wiring Regulations.

2.4 Installation should only be carried out by suitably qualified installers. There is no requirement for approved training in regard to the installation of pressurised or unvented storage cylinders.

2.5 Do not attempt to lift the unit using the pre-fabricated pipework.

2.6 All pre-made connections should be checked & tightened if required prior to installation.

2.7 Pre-Fitted Pumps may need repositioning by installer and inlet connections made watertight. Ensure that access can be made to the Pump Isolating Valves.

2.8 The domestic hot water operates at mains pressure, therefore all pipework and fittings must be suitable for the maximum pressure and temperature duty. Please check that the maximum supply pressure does not exceed 5 bar, and if necessary a Pressure Reducing Valve should be fitted onto the incoming mains. The Heat Bank Thermal Store remains unpressurized at all times.

2.9 Connections in 22mm to the Heat Bank Thermal Store are provided by metric compression bosses, supplied with nuts and olives for direct connection to pipework. BSP fittings should not be used. Spare Nuts are available upon request.

2.10 The stored water in the Heat Bank Thermal Store must be protected with a suitable chemical scale & corrosion inhibitor. See Section 6.

2.11 The cylinder must be installed to allow access to all fitted components for maintenance purposes. This will include the removal and replacement of the Immersion Heater(s).

2.12 Push Fit Connections

2.13 Certain pipework connections are made using push-fit fittings. A Disconnecting Tool will be required to disconnect push-fit joints. Disconnecting Tools & more information can be obtained via our spares departement.

2.13.1 When connecting to a push-fit fitting:

2.13.1.1 Any soldered joints in adjoining pipework should be made prior to connection to the push-fit fitting.

2.13.1.2 Cut tube square using a rotary pipe cutter - do not use a hacksaw to cut the tube.

2.13.1.3 Check that the end of the tube is free from burrs and sharp edges or damage will occur to the O-Ring in the push-fit fitting.

2.13.1.4 Allow 27mm of pipe for insertion into the fitting plus 10mm of pipe to allow use of a disconnecting tool.

2.13.1.5 Insert the tube through the release collar of the fitting to rest against the grab ring.

2.13.1.6 Push the tube in firmly until it reaches the tube stop with a positive 'click'.

3 COLD MAINS SUPPLY.

3.1 The Cold Mains supply should not exceed 5 bar pressure, or a flow rate of 30 litres per minute.

3.2 IMPORTANT: A Mains Isolating Valve must be fitted onto the incoming mains within the cylinder cupboard within clear view of the house-holder.

3.3 IMPORTANT: A Y-Pattern Strainer (supplied loose) must be fitted onto the incoming mains. The Y-Pattern Strainer should be fitted down-flow of the Isolating Valve in a position to enable servicing.

3.4 In areas of hard water it is recommended that a In-Line Scale Inhibitor be fitted on the incoming mains supply, and installed as per manufacturers instructions.

3.5 In areas where hard water is known to be a problem, it is recommended that an Electronic Scale Inhibitor be fitted on the incoming mains supply. Details available upon request

4 CONNECTIONS TO Heat Bank Thermal Store.

4.1 Cold Mains In.

4.2 Hot Water Out.

4.3 Flow from Boiler.

4.4 Return to Boiler

4.5 Flow to Heating Circuit

4.6 Return from Heating Circuit

5 WIRING