Ridge Flue Terminal Kit - 3
2. INSTALLATION
a. When the template is on the wall in the boiler position, continue the
vertical line from the centre of the flue hole up to the roof/ceiling
position. Mark the centre position of the flue hole from this line as
shown in Fig. 2.
b. Remove the telescopic section from the terminal and ensure it is
stored safely . Secure the two fixing ties to the underside of the
terminal - one either end, using the screws supplied.
c. If applicable, remove the existing ridge tile and the ridge tiles either
side then clean the area of any mortar. Refer to Fig. 3.
At the nominated position between the rafter spacings, cut the roofing
felt/boarding to allow for the penetration of the rectangular throat
section of the ridge flue terminal.
Test fit the terminal to determine how it sits in relation to adjacent roofing
materials. It may be necessary to trim the 'V' sections from the terminal
mortar bedding tray to obtain the best fit with certain roofing materials.
d. Lay cement mortar or a mortar substitute, e.g. Flexim, a flexible
mortar, at the ridge line where the Ridge terminal meets the tiles/
slates. Firmly push the ridge terminal into position allowing mortar to
penetrate the mortar bedding tray. Refer to Fig. 3.
Fig. 3
e. Secure the terminal to the roof structure via the two fixing ties. Refer to Fig. 3.
f. Complete the installation of the terminal using a cement mortar or mortar substitute to make good the joint area
between the terminal and adjacent ridge tiles.
Ensure the ridge terminal is clean and free from any blockages.
Note: Once installed the terminal design will allow rain and condensate to be discharged into the flue pipe. It is
essential to connect the ridge terminal to a completed flue system connected to the boiler. If left unconnected,
provision should be made to collect liquid from the terminal and to drain it away as necessary.
g. From inside the roof, locate the previously removed telescopic section over the throat of the terminal. Lubricate the
seal if necessary.
Note: Ensure that there is adequate engagement of this section, i.e. at least 50 mm (denoted by the textured zone).
h. Assemble the flue extensions together by locating the inner duct into the seal joint and secure each extension
together with the clamps supplied (three screws). Ensure that the clamps are positioned centrally over the joints.
Refer to Fig. 4.
Note: If it is required to cut an extension, DO NOT cut the end of the inner duct that incorporates the seal joint.
Ensure the inner duct end without the seal joint is cut so that it is 15 mm longer than the outer duct.
i. Connect the flue assembly to the telescopic section of the ridge terminal using the outer clamp supplied. Seal the
telescopic joint with the tape supplied.
Note: Ensure that the flue assembly is supported at roof level using suitable brackets.
Fig. 2
