Baxi LUNA HT 1.450 Installation And Servicing Instructions page 18

WARNING
All concentric venting must be fastened together using screws.
Note:
Dual flue venting is not to be fastened with screws. This procedure only pertains to concentric venting.
Concentric Vent Screw Placement
Two screws must be fastened through the outer intake
pipe behind the gaskets at equal distances approx.
180º apart. Please note the screws used should be no
larger than No. 8 - ½" sheet metal screws and must be
zinc coated. The length of this screws should be 0.75 in
(19.0 mm).
WARNING
Before securing the screws ensure the pipe has been pushed in a minimum of 1 3/4" (45 mm) into the gasketed
end of the other pipe.
IMPORTANT
To insert the pipes use only silicone grease supplied with the exhaust pipes. The silicone grease has to be used only
in the smaller seal of the exhaust pipes. Do not use other types of grease. Do not apply to large seal.
INSTALLATION AND SERVICING INSTRUCTIONS
18
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7110242.02 - en