GENERAL INSTALLATION
COLD MAINS PIPEWORK
Run the cold main through the building to where the
Greenstore cylinder is to be installed. Take care not to run the cold
pipe near hot water or heating pipe work to minimize heat pick up.
Identify the cold water supply pipe and fit an isolating valve (not
supplied)
A 22mm BS1010 stopcock can typically be used but a 22mm
quarter turn full bore valve is preferred as it does not restrict the
flow as much. Do not use “screwdriver slot” or similar valves.
Position the inlet control just ABOVE the Temperature & Pressure
Relief Valve (TPRV) mounted on the top of the cylinder. This
ensures that the cylinder does not have to be drained down in
order to service the inlet control set.
Check that the arrow points in the direction of the water flow.
Mount the expansion vessel in a suitable position on the wall using
the bracket provided. Use the hose to connect to the inlet control
group.
Ensure that the top of the vessel is accessible for servicing.
BALANCED COLD CONNECTION
Where there are showers, bidets or monobloc taps in the
installation then a balanced cold supply is necessary.
There is a 22mm balanced connection on the inlet control set.
Another method is to split the inlet control set on to two parts.
Site the pressure reducing valve immediately after the incoming
cold mains stopcock (typically under the kitchen sink.) All outlets in
the house will be at 3 bar and thus automatically balanced.
The expansion relief valve section must still be mounted just above
the TPRV on the cylinder. A 3/4”F-22mm compression adaptor
will be needed (not supplied)
HOT WATER PIPEWORK
Run the first part of the hot water distribution pipework in 22mm.
This can be reduced to 15mm and 10mm as appropriate for the
type of tap etc. Your aim should be to reduce the volume of the hot
draw-off pipework to a practical minimum so that the time taken for
the hot water is as quick as possible.
Do not use monobloc mixer taps or showers if the balanced cold
connection is not used. The unit will back pressurize the cylinder
and result in discharge.
PRIMARY COIL CONNECTIONS
Connect the primary connections (Indirect only) using the
compression fittings provided for connection to the Worcester
Heat Pump only.
It is preferred that the primary circuit is a sealed system with a
maximum pressure of 2.5 bar. An additional expansion vessel and
safety valve would be required in this case.
The supplementary coil is for use with Worcester Solar Systems
exclusively that are equipped with Worcester solar controls.
Please refer to the installation manuals, Greenstore System
Installation manual and Worcester Greenskies Solar literature:
NOTE:
The relief valve connection should not be used for any
other purposes.
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GENERAL INSTALLATION
Worcester Bosch Grrenstore
