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Replies: 3
Views: 411
Posted By flatcrank

QAC4 Siemens Outdoor Temp Sensor

Thank you for the responses, confirms my thinking and gives me the confidence to play with all this.

The current system does use a Tekmar switching relay for the three zones controlled by...
Replies: 3
Views: 411
Posted By flatcrank

New Combi Boiler, old installation had an add on return line Acquastat?

I have replaced an old Baxi combi boiler with a new Baxi Duotec 40GA. The old unit worked well with an old cast iron radiator system,
but when an addition was put on with two radiant floor loops...
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