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Commissioning
Filling
First you must ensure that the pressure in the expansion vessel is the same as the setting of the pressure
reducing valve i.e. 3 bar (45PSI). The valve is of the Schrader car tyre type. Check all the connections for
water tightness including any factory made connections such as the immersion heater and the temperature
and pressure relief valve. Prior to filling, open the hot tap furthest away from the cylinder to expel air. Open
the cold main isolation valve and allow the unit to fill.
Once the cylinder has been fully commissioned it should be heated to its normal operating temperature.
Draw off secondary hot water to each outlet and allow hot water to flow from each outlet for at least 30 sec-
onds to remove any flux residue from the pipe work within the secondary hot water system. Then fully drain
the cylinder and re-fill to ensure that all flux residues are removed from the system.
Indirect Units
Fill the primary circuit according to the boiler manufacturers’ commissioning instructions. Any additives
used in the heating system water circulating through the cylinder coil must be compatible for use with stain-
less steel cylinders.
Ensure the lever on the two port valve is set to the filling position. When full, move the lever back. Switch
the programmer to Domestic Hot Water (DHW) and allow the unit to start to heat. Adjust the dial of the dual
thermostat to between 30°C and 70°C as required.
Storage Temperature
60-65°C is the recommended storage temperature for both direct and indirect cylinders. In hard water are-
as consideration should be given to reducing this to 50-55°C. In many healthcare applications the guidance
on Legionella control and safe water delivery temperatures will require storing the water at 60-65°C, distrib-
uting at 50- 55°C and using thermostatic mixing valves to control the final temperature. For details consult
the NHS Estates Guidance on safe hot water temperatures.
WEEE Declaration
Disposal of Waste Equipment by Users in Private Household in the European Union.
This symbol on the product indicates that this product must not be
disposed of with your other household waste. Instead, it is your
responsibility to dispose of your waste equipment by handing it over to a desig-
nated collection point for the recycling of waste electrical equipment.
The separate collection and recycling of your waste equipment at the time of dis-
posal will help to conserve natural resources and ensure that it is recycled in a
manner that protects human health and the environment.
For more information about where you can drop off your waste equipment for
recycling, please contact your local city office, your household waste disposal
service or the company where this product was purchased.
