IS 769 ECN 4688
Page 9 of 13
Drain and flush all de-scaling agent from the tank completely as follows:
Unscrew the drain plug (beneath the grommet
– Fig 1 G) using a 24mm spanner to
hold the plug and a 21mm socket on a ratchet (Fig 3) to remove it from the bottom
of the tank. Drain all the water out.
Fig 3
Flush out the tank with clean water.
When empty, replace the drain plug and replace the grommet.
Replace the tank lid, ensuring the gasket seals the top of the tank correctly.
Refit the outer cover and turn the boiler on.
