Lacunza Silver 800/1000 Zero Clearance Box Assembly Instructions
June 12, 2022
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Step 3: Fitting the Flue
3.1
The flue should be raised off the top of the Zero Clearance Box, using the 2 x Flue Brackets.
The Flue Brackets are fixed to the 200mm Flue (Inner Casing), and the upper folded u-
shaped hook is fixed to the 300mm Flue (Outer Casing). You will need 3 x Self Tapping
Screws for each Flue Bracket (A total of 6 x Self Tapping Screws). The 200mm Flue slides
through the top of the Zero Clearance Box and sits above the heater resting on the Flue
Brackets. The 200mm Flue must be sealed with a flexible sealant around the top of the
Zero Clearance Box, to stop heater air from coming into the chimney chase cavity. The
300mm Flue must sit 65mm above the top of the Zero Clearance Box.
