Worcester Greenstyle Hanbury 4 Installation, Servicing And User Instructions Manual page 19

INSTALLATION
FACTORY BUILT CHIMNEY
When a metal prefabricated chimney is used, the manufacturer's
installation instructions must be followed. You must also purchase
(from the same manufacturer) and install the ceiling support
package or wall pass-through and "T" section package, firestops
6720819898 A 05/2016
51mm
(where needed), insulation shield, roof flashing, chimney cap,
etc. Maintain proper clearance to the structure as recommended
by the manufacturer. The chimney must be the required height
above the roof or other obstructions for safety and proper draught
operation.
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