WarmFlow B-Series B70, Owner'S Manual

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Page 47
5.1.1 Installation of a Low Level Balanced Flue (BF-R)
. Make a suitable sized hole in the wall for the flue. For the dimensions of the boiler,
see the Dimensions Section of this manual. For the dimensions of the flue system,
see the Flue Kits & Dimensions Section of this manual.
Note : The cavities around the opening must be sealed and protected by a non-
combustible sleeve.
2. Remove the conventional flue ring, ensuring all the silicone sealant is removed from
the top of the boiler. If installing a 70 or 90 output non-combi model, also remove
the service access door.
3. Carefully fit the inner and outer seals to the flue starter piece and smear them with
soap or an appropriate lubricant (suitable for use with silicone flue seals).
4. If installing a U70, UP70, U90 or UP90 model, remove the lower casing panel
knockout from the appropriate side or rear panel. This is best done with a pair of tin
snips. If installing a U20 or UP20 model, remove the upper knockout.
Push the boiler into position against the wall, correctly locate the gasket on the boiler
then install the flue starter piece, securing it in position using the fasteners provided.
5. If installing extension pieces, ensure the seals are correctly fitted and lubricated
before pushing through the wall and into the starter piece.
Note : Any combination of short (300mm) or long (600mm) extension pieces for the
BF-R can be used up to a maximum total length of 200mm.
6. Slide the flue terminal into position with a twisting movement ensuring that it
protrudes through the wall by a minimum of 75mm and a maximum of 225mm.
7. Seal the gap between the flue and the wall both inside and outside, then fit the
terminal guard (basket) over the flue terminal. Use the cardboard mounting template
supplied with the flue kit to locate and drill the necessary screw holes in the wall.
8. Remove the air inlet cover from the burner then fit the intake adaptor spigot and
gasket. Connect one end of the air duct / hose to the flue and the other end to the
adaptor spigot and secure.
5.1.2 Installation of a High Level Balanced Flue (HLBF)
The ‘Easy Fit’ High Level Balanced Flue (HLBF) can only be used with the 20
Output Models (B20, U20 & UP20) when fired at the factory setting (0.85 gal
nozzle). It CANNOT be used when fired with a .00 gal nozzle.
Install as per the above instructions noting that there are no flue seals to fit, the flue
is not telescopic and there are no extension pieces available for this flue type.