14
13
The flue length is measured from the centreline of the
appliance flue outlet to the inside of the external wall-
sealing ring. In most cases it will be possible to achieve
the required flue length without cutting the ducts, however
where necessary the plain ends of the extension ducts
may be cut. Never cut the swaged end, and always
ensure that the cut is square and free of burrs or debris.
NOTE IT IS ESSENTIAL THA
T THE TERMINAL
IS FITTED THE CORRECT WAY UP
See flue kit Instructions (i.e. rain shield at the top).
MEASURING THE EXACT FLUE LENGTH
14
4.8
AIR / FLUE DUCT INSTALLATION
For cor
rect flue installation please refer to the installation
instructions that are provided with the individual flue kits as
described in section 2.5.
Measure the required flue length as shown in Fig. 14.
Refer to section 2.5 to determine whether any extension kits are
required. Installations using only the standard ducts or standard
ducts with straight extensions are described in this section.
Installation instructions for all other flue systems are included in
the various flue kits.
IMPOR
TANT:
Ensur
e the flue seal supplied in the fittings bag is
fitted to the flue outlet at the top of the boiler (recuperator).
a)
Ensur
e that all (inner and outer tube) sealing rings are provided
and assemble the air/flue ducts as shown in the flue instructions.
b)
Constr
uct the correct flue length by building the flue outside the
appliance.
Ensur
e that the flue and air seals are correctly fitted
before assembly and that each section is fully
engaged, and that the flue seal supplied in the fittings
bag is fitted to the flue outlet at the top of the boiler
(recuperator).
4.7
PRESSURE RELIEF VALVE CONNECTION
Refer to Figur
e 12.
The pr
essure relief valve and discharge pipe is located at the
bottom RHS of the appliance. Continue the discharge pipe
provided using no less than 15mm diameter copper pipe to the
outlet. The pipe outlet should be positioned so that the discharge
of water or steam can be noticed, but cannot create a hazard to
the occupants of the premises or damage electrical components
or wiring.
