joule Thermalstore 1.0, Installation Manual

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Thermalstore
50
When installing an open vent heating system, it is recommended to use copper
pipe with a minimum diameter of 22mm on standard boilers and a minimum of
28mm copper pipe on solid fuel boilers. Temperatures in the vent pipe from the
open v
ent systems can exceed 90°C so ensure that the pipework used is suitable for
high temper ature applications. It is recommended to use copper fl oats, brass ball
valves, metal overfl ow tanks and copper pipework in all open vent applications.
When installing a solid fuel appliance a heat leak radiator on the gravity circuit of
the pipework should be installed.
A high limit sta t should also be fi tted to automatically turn on a zone valve and
corresponding circulating pump. This should be set to 85°C. Provide a system lock
out where a second heat source is installed to prevent both appliances from
delivering excess heat into the Thermalstore. Details can be found in the installation
schematics of this manual to show how this can be achieved.