The top plate, top clamp and top sleeve cw rain cap pack is used to support the weight of the chimney liner at the top of the chimney stack. Use this pack where you intend to remove the chimney pot, or there is no chimney pot, and install the liner without using a traditional chimney pot.
Place the top plate over the chimney recess at the top of the chimney stack. The flue liner should protrude throught the top plate hole by approximately 100mm. Insert the top insert sleeve cw rain cap into the flue liner. Now place the top clamp over the flue liner and tighten the two nuts and bolts until the flue liner is secure againts top insert sleeve cm rain cap. Now apply a suitable acid resistant cement as a seal and weather proof render.