INSTALLATION INSTRUCTIONS
TR05A153.B1107
34
4.8.10 Flue diaphragm installation – Twin pipe flues
The adjustable flue diaphragms MUST ONLY be installed on the top of the boiler.
They MUST NOT be installed elsewhere in the flue system.
The adjustable flue diaphragms of a twin pipe system MUST be installed on the AIR INTAKE.
Installation Instructions (see Figure 31):
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Remove the air intake cover;
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Clean the top surface of the boiler and of the boiler flue spigot;
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Mount the two neoprene gaskets, lining up the holes with those on the flue spigot and around the air intake;
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Push the flared end of the Ø60mm aluminium collar onto the plastic inner pipe of the flue exhaust starter piece,
then fit the starter piece to the boiler passing the screws (provided with the flue kit) through the flange and
gasket then screwing them into the flue spigot;
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Place the lower diaphragm (with the numbered scale) onto the air intake gasket;
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Place the upper diaphragm (with the pointer) onto the lower diaphragm;
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Fit the air intake starter piece onto the boiler, passing the screws (provided with the flue kit) through the flange,
the top and bottom diaphragms and the gasket then screwing them into the top of the boiler;
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Establish the total flue system length then adjust the flue diaphragms following the guidelines in Section 4.8.11;
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ONLY WHEN THE DIAPHRAGMS HAVE BEEN ADJUSTED, tighten the screws to secure the diaphragms.
Before firing, DOUBLE CHECK that the screws have been tightened!
Ø80
VERTICAL CONNECTION
EXHAUST
NEOPRENE SEALING GASKET
ALUMINIUM COLLAR Ø 60
Figure 31: Twin pipe flue diaphragm installation
