Hi
All I can tell you is that the system was installed in 1978, the first grundfoss pump was changed in 2003 and second grundfoss one is still going strong, I have drained system probably about 4 times and never had any problems either draining or refilling.
Mick
All I can tell you is that the system was installed in 1978, the first grundfoss pump was changed in 2003 and second grundfoss one is still going strong, I have drained system probably about 4 times and never had any problems either draining or refilling.
Mick
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