Commissioning - Panasonic Aquarea Tank Duo GH 200 Design, Installation & Servicing Instructions

Connections can come loose in transit, and all should be checked before installation.
Ensure that the immersion heater achieves a temperature of at least 60°C in the store
and that the wiring is in accordance with the diagram.
Check the pressure on the air side of the expansion vessel = 3 bar. This must be done
when the water in the cylinder is free to expand in atmospheric pressure or the cylinder
and relevant pipe work is empty.
Check that the drain cock is closed, and open all the cold and hot water taps and other
terminal fittings. Allow the system to fill with water, and to run until there is no air left
in the system. Close the taps and inspect the system closely for leaks.
Manually open the Relief Valves one by one and check that water is discharged and
run freely through the tundish and out at the discharge point. The pipework should
accept full bore discharge without overflowing at the tundish, and the valve should
seat satisfactorily.
In line with good plumbing practice, use of excessive flux should be avoided.
When soldering above the cylinder, ensure flux/solder does not contaminate the
cylinder below, since this can cause corrosion, Flushing should be done performed
as per BS EN 806:4 2010 section 6.2
Allow the cylinder to heat to normal working temperature, then thoroughly flush the
domestic hot and cold water pipework through each tap.
NOTE: If this appliance is to be installed in other than a single domestic dwelling ie. in
an apartment block or student flats etc., the hot and cold water system will need to be
disinfected in accordance with BS EN 806:4 2010 section 6.3 and the Water Regulations.
Because the Aquarea appliance is stainless steel, the use of chlorine as the disinfection
agent can cause damage unless the appliance is adequately flushed and refilled with
the mains water immediately on completion of the disinfection procedure. Damage
caused through a failure to do this adequately will not be covered by the warranty.
For the above reasons we recommend the use of a non chlorine dased disinfectant
such as Fernox LP Sterox as manufactured by Cookson Electronics when carrying out
disinfection of systems incorporating these appliances.
IMPORTANT - DRAIN DOWN PROCEDURE
1 Switch off both the heat pump and the immersion heater
2 Open the nearest hot tap and run all hot water until cold
3 Close the incoming cold main at the stop tap
4 Hold open the pressure and temperature relief valve until water stops
discharging into the tundish
5 Open all the taps in the property
6 Open the drain cock and immediately hold open the pressure and
temperature relief valve again until the cylinder is empty
Remove the filter from the combination inlet group clean and replace. Refill the
system and open all hot taps until there is no air in the pipe work. ENSURE CYLINDER
INSTALLATION
IS DRAINED PRIOR TO CHECKING OR
REMOVING FILTER FROM THE COMBINATION
INLET GROUP.
Allow the cylinder to heat to normal working
temperature with whatever heat source is to be
used, and check again for leaks. The Pressure
Relief Valve should not operate during the
heating cycle.
The heat pump/heating systems should be
filled and commissioned in accordance with
good practice following the guidance in BS
7593:2006/the heat pump manufacturers
instructions. This includes adequately flushing
the system to remove any debris that may
have been introduced during installation/
maintenance.
NOTE
At the time of commissioning, complete all
relevant sections of the Benchmark Checklist
located on the inside back pages of this
document.
This must be completed during commissioning
and left with the product to meet the Warranty
conditions offered by Aquarea.
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COMMISSIONING