▶ Follow the instructions listed here and observe any legal
directives and local regulations on condensate discharge.
▶ Use PVC or another material that is suitable for draining
the non-neutralised condensate.
▶ If you cannot guarantee that the materials from which
the drain lines are made are suitable, install a system for
neutralising the condensate.
▶ Ensure that the connection between the condensate
drain pipework and the drain hose is not air-tight.
Note
The condensate drain pipework must have a
continuous fall (45 mm per metre) and should
whenever possible terminate at a suitable
drain point within the heated envelope of the
building that will remain frost free under long
periods of low external temperatures.
▶ Connect the condensate siphon (1). Use the supplied
drain hose (2) for this.
▶ Connect condensate drain pipework (21.5 mm, not in-
cluded in the scope of delivery) (3) to the drain hose (2).
▶ During installation remove all burs from inside of cut pipe
work and avoid excessive adhesive which may trap small
pockets of water close to the pipe wall which can freeze
and build into a larger ice plug.
▶ As with other pipe work insulate the condensate dis-
charge pipe to minimise any risk of freezing and beware
when crossing cavities that the fall is maintained and the
pipe sleeved.
You can find further information in BS 6789: "Specification
for installing and maintaining gas-fired boilers with a nominal
heat loading less than 70 kW".
5.5 Connecting the drain cock
▶ Connect a hose to the drain cock (1) and guide the free
end of the hose to a suitable outflow location.
5.6 Flue gas installation
5.6.1 Installing the air/flue pipe
Caution.
Risk of poisoning due to escaping flue
gas.
Mineral-oil-based greases can damage the
seals.
▶ Instead of grease, use only water or com-
mercially available soft soap to aid install-
ation.
1. Ensure that there is a minimum downward gradient
of 5% between the elbow and the terminal on the
air/flue pipe so that the condensate can flow back to the
product.
2. Install the flue gas pipe in accordance with the installa-
tion instructions that are included in the scope of deliv-
ery for the air/flue pipe.
3. You can find out which air/flue pipes may be used by
consulting the enclosed air/flue pipe installation manual.
4. Install the flue gas pipe in accordance with the installa-
tion instructions that are included in the scope of deliv-
ery for the air/flue pipe.
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