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    Help OFTEC engineers

    Hello all Just got back from an oil boiler serviced 2 weeks ago customer complained burning sooty went back changed nozzle did another analysis 12% co2 the sooty exhaust gone but the only thing that concerns me is the flue exhaust temp got up to 400 C is this the soot burning off ? The...
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    Water Pump

    If your fusebox has an rcd main fuse you are protected yeah if you hooked it up to the immersion heater circuit it is probably high on 16 amp probably if able change to 6 amp but if not don't worry you are safe enough
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    Heating Controls recommendations (RF & wired)

    im pretty sure the wireless stats have 9 volt batteries
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    Water Pump

    Earth cable connected from where does it come from fusebox or is it cross bonding and is there an rcd on your fusebox and does the circuit you wired the pump to on the rcd side
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    boiler problem

    Hello all I have a oil boiler open vented 4 pipe system with gravity hot water and pumped heating. The boiler started making a pinking sound or boiling sound i think you call it kettling well to me sounded like poor circulation so i changed the pump and success noise gone now 3 weeks later...
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    milwaukee power tools

    Get the V28 thats the best bought one drill and then replaced all my stuff with V28
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    best CORE DRILL for speed,accuracy,reliability, any ideas ?

    MILWAUKEE are some of the best tools i have used replaced all my stuff with milwaukee. http://cgi.ebay.co.uk/Milwaukee-DD2160XE-Diamond-Core-Drill-DD2-160XE-240V_W0QQitemZ190115348396QQcmdZViewItemQQptZUK_Home_Garden_PowerTools_SM?hash=item2c43c1ffac
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    help with replacing a 2gang switch

    The two way put the red in the ( com ) on the top of switch and the yellow and blue in ( L1 ) and ( L2 ) either way doent matter.
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    Neutralizer or thermal store

    Hello All I have a customer that wants a wood burner and oil boiler link up yet wants mains pressure hot water i have been told that you are not allowed to have an unvented cylinder with a neutralizer yet dunsley have diagrams for this...
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    Automatic bypass valve?

    Hello I am a bit of a novice plumber I have plumbed a new build and have put underfloor heating downstairs and radiators upstairs and my question is when the only thing calling for heat is the underfloor heating will this put pressure on the pump in the boiler ( sealed system ) and was...
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