Renaissance RUMFORD 1500, Manual

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Figure 13 General Chimney Installation
CANADA ONLY:
A flexible radiation shield tube (RM-12RRSF) must be installed around the
chimney when it is enclosed. This includes an outside chase. In the fireplace
enclosure the flexible radiation shield tube is not required.
The radiation shield (RM-12RRS2) must be used with its ring at the first ceiling
above the fireplace. All subsequent floors require a radiation shield without the
ring installed.
Once a radiation shield is installed to pass through a floor, install a length of
chimney and then insert a flexible radiation shield tube over it. The ends of the
flexible radiation shield tube are not the same size. The smaller end goes
towards the floor while the larger end goes towards the ceiling. Make sure to
insert the flexible radiation shield tube in the appropriate orientation around