JINCHW09 Rev A 12/05/14
If a common flow and return is used, these should
also be taken from diagonally opposite sides of
the boiler, and plugs inserted into the sockets not
used.
Systems using a common flow and return to the
boiler should incorporate an injector tee on the
primary return connection from the central
heating pump (see diagram).
A HIGH LIMIT thermostat should be fitted to the
gravity flow pipe close to the boiler and set at
90°C. This should override any pump control,
switching the pump on and dissipating any excess
heat around the radiator circuit.
To prevent boiler corrosion due to condensation it
is necessary to maintain the return water
temperature above 45°C. This can be achieved by
the use of a LOW LIMIT thermostat on the return
pipe from the hot water cylinder, close to the
boiler. The thermostat should make on
temperature rise, preventing the circulating pump
from operating until the gravity circuit is up to
temperature.
F
LUE
C
ONNECTION
N.B. An adjustable flue bend may be required for
some installations.
If connecting to a stainless liner,
a proprietary
single wall flue adaptor will be required. It is
recommended that a short length of flue pipe is
connected before the liner.
If connecting to an existing masonry
chimney it is
recommended that a flue forming pipe (short
length of flue pipe) is used and the void between
the flue forming pipe and the chimney is filled with
vermiculite concrete.
A suitable access hole will need to be made in the
chimney breast to allow the back filling to be
carried out and then filled and sealed once the
installation is complete.
Alternatively a connection can be made using a
register plate although it will be necessary to allow
access for fitting the flue pipe to the register plate,
infilling with vermiculite concrete and sealing all
joints.
R
E
-A
SSEMBLING
T
HE
S
TOVE
Refit all the internal parts by following the
‘removing internal components’ instructions in
reverse orders.
