PEX Pipe on solid fuel boiler

[Orkatec]

Hi
I have just got a new Solid Fuel Cooker Boiler.
I would plumb this using copper but with the price of pipe and fittings I am thinking of using PEX Pipe and fittings. How far from the boiler should I run the Copper before using the PEX.
Any related advice would also be welcome.
TA

[stoneyboy]

Orkatec,
Stick with copper for the whole primary circuit, you cannot predict the temperatures involved with a solid fuel boiler.
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