Amazon HXINUV, Installation Instructions A1, 28th June 2019
Commissioning
Having completed the installation of the cylinder as per the manufacturers instructions, and filled it, the set up of the temperature and
flow controls can be undertaken as follows:
1. The two cylinder thermostats should be set as follows:
Dual thermostat on cylinder: 50C
ICT thermostat teed off heat exchanger: 55C
2. Next, refer to either Tables A or B to establish the correct flow rate adjustment for the DHW flow on the DHW flow setter - this will
be dependent on the available power from the connected boiler or primary heat source; It is assumed that an appropriately sized
heat source is being connected to the cylinder being installed - if in doubt, contact your cylinder supplier.
The standard 50KW version of the cylinder uses a RAVK valve, whilst the 100KW version uses a AVTB valve for thermostatic
control of the DHW temperature being produced see attached data sheets for further identification.
The calculated temperature rise across the plate heat exchanger assumes a cold mains water inlet of 10 degrees and a DHW
output to the cylinders of 60 degrees. NOTE: The stated flow rate described in Tables A & B is the total flow from the plate heat
exchanger into the cylinder. In a twin cylinder installation, this flow must be divided equally between the two cylinders - e.g: for
a 35KW boiler, required flow rate is 10 Litres/min. Therefore each flow setter to be set to 5 Litres/min.
Turn the DHW timer / programmer to create a demand for DHW from the cylinder and set the correct flow rate on the flow
setter:
Adjustment of the Taconova Flow Setters.
The flow measurement is based on the principle of a baffle float with return spring. The flowmeter is built into the housing. The
balancing can be carried out with a screwdriver at the adjusting screw. The reading position is the bottom line of the baffle
float."
3. The DHW temperature control valve (RAVK or AVTB) is to be set such that 60C is observed at the DHW outlet from the heat
exchanger (where the capillary tube from the valve is fitted), and entering the cylinder. This equates to a setting on the adjustment
knob of between 4 and 5. Final checking should be done using a suitable temperature sensor / probe on the pipework above the
flowsetter.
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