Plug the top and bottom of the test area, using a drain plug or inflatable drain bag., Fill all the appliance traps with water, allowing a small amount of water to enter the pipework and therefore cover the bottom plug., Attach one of the three rubber tubes to the test nipple on the top plug., Attach the tee piece to the other end of this first rubber tube., Then attach the other two lengths of rubber tube to the tee piece, which in turn connects to the pump and manometer., Gently squeeze the pump until the manometer measure is 38mm., At that point, turn the inlet valve off so no air can escape through the pump, The 38mm test pressure should remain for three minutes, with no drop in pressure, If there is a drop in pressure, the leak needs to be found and the system re-tested

Soundness testing

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