Crown Boiler BWC225 - Manual (Page 6)

4
WARNING
Failure to ensure that the chimney is clean, leak tight, water tight, and structurally sound could result in severe
corrosion damage to the boiler, damage to the vent system, restriction of combustion air supply, or the entry of flue
products into the structure which in turn could cause unreliable operation, property damage, personal injury, or loss of
life.
Installation of this kit will require an opening at the base of the chimney (at the level of the horizontal vent connection) that is 4)
approximately 7” wide and 12” tall. A slightly smaller, or significantly larger opening may be required depending on the chimney
wall thickness. Before attempting to install this kit, make sure that such an opening either exists, or can be made, without
compromising the structural integrity of the chimney (much of this opening will be re-closed later in the installation process).
Maximum distance from center of chimney chase to outside surface of chimney base is 23” (Figure 1.2). 5)
Verify that there are no offsets in the chimney that will cause the PPs Flex Liner to bend more than 45 degrees. 6)
Verify that it will be possible to maintain a 5/8in per ft. pitch towards the boiler in all horizontal piping between the boiler and the 7)
elbow at the base of the chimney chase.
PPs Flex Liner and the hardware needed for a single PPs Flex Liner installation are sold separately. All hardware is included in a 8)
“PPs Flex Installation kit”. Table 1.1 shows the Crown part numbers for these kits and the PPs Flex Liner itself.