17 | P a g e
For 90° and 45° bends the corners must be
insulated.
For a 90˚ bend with a minimum bend radius is
150mm. Cut the insulation diagonally into 3 pieces
in a cone shape.
On the heater connection end - Fit clamp loosely &
apply silicon inside the pipes. Apply an 8mm silicon
bead fully around the inside of the flue and on the
heater spigot. Smear the silicon around the spigot
and pipe.
Recommended Silicon Non-acetic, neutral cure
200°C or higher temperature rated. Bostik RTV 922
or similar
Slide flue onto connection spigot fully. Tighten
clamp fully. Wipe excess silicon, visually check
connection to ensure connection is fully sealed.
Repeat above with air intake flue pipe to heater
connection.
Clip flues as required to provide adequate support.
42mm
112mm
42mm
112mm
42mm
112mm
42mm
112mm
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