Potterton Prorile Prima 30e Installation And Servicing Instructions page 12

INSTALLATION INSTRUCTIONS - Page 12
FIG. 10a SIDE FLUE
1. Measure from outside face of wall to the side of boiler
casing reference line (dimension 'x').
2. Take air/flue duct assembly and measuring from the
flanged end, mark and cut the outer duct and inner flue
duct to dimension 'x' plus 20mm. Ensure that both
ducts are cut squarely.
FIG. 11 AIR/FLUE DUCT ASSEMBLY
1. Slide rope sealing ring on to air duct.
2. Engage the terminal on to the ends of the inner flue
duct and outer air duct with its discharge vanes
arranged to deflect the flue products in the desired
direction. Press terminal fully home.
FIG. 12 SECTIONAL VIEW OF AIR/FLUE DUCT ASSY
THROUGH WALL
FIG. l0b REAR FLUE
1. Measure wall thickness (dimension 'Y').
2. Take air/flue duct assembly and measuring from the
flanged end, mark and cut the outer air duct and inner
flue duct to dimension 'Y', plus 45 mm. Ensure that
both ducts are cut squarely.
NOTE
Cutting length remains the same for minimum or
maximum clearance at the rear of the boiler.
3. Engage four screws from accessory pack 'C' into the
pre-drilled holes in the terminal and screw fully home.
These screws which are self drilling will pierce the air
duct and secure the terminal to air duct.
4. Protect duct where it is likely to come into contact with
mortar by using adhesive tape provided (accessory
pack E).
5. Insert the assembly into the wall sliding the rope
sealing ring along the air duct into the flue sealing
collar. Bend the six tabs on flue sealing collar inwards
to retain the rope sealing ring. Ensure air duct flange
studs do not obstruct lifting of boiler onto mounting
bracket.