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  1. C

    thermocouple test

    do you mean unscrew the tc from gas valve screew it into a spare gas valve heat tc up with a lighter and what next............
  2. C

    thermocouple test

    so when you say the positive connection goes to earth and negative to the tc where does the earth go and where would the negative lead go on the thermocouple
  3. C

    installing boilers on sub contracts

    well mate your being done we get 600 per fit and 300 a boiler swap
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