14
Mexico Super CF 3/100, 3/125, 3/140 -
Installation
1.
Separate flow and return connections are used for
each service. All possible configurations are given
in Frame 7 and
ONLY those shown should be
used.
2.
The schematic pipework graph is based on the
assumption that NO MORE than 8 elbows are
used in the gravity loop, including entry to the
boiler.
3.
For each extra elbow in excess of 8, (R) MUST be
reduced by 300 mm (12") or (H) increased by 100
mm (4")
4.
Whatever value is selected for (R), the value of (H)
MUST be at least that indicated by the graph
11 GRAVITY HOT WATER & PUMPED CENTRAL HEATING
INST
ALLA
TION
INSTALLATION
12 FLUE CONNECTION
Connect the flue pipe to the flue outlet.
The flue pipe spigot and socket connections should be sealed
with fibreglass rope, or similar, and suitable fireclay cement.
Notes.
a.
The boiler flue connection outlet size is suitable for flue pipe
conforming to BS 567.
If sheet steel flue pipe is fitted, a suitable adaptor must be
used.
b.
To facilitate installation and subsequent disconnection it is
recommended that a slip or split socket be included in the
flue installation, adjacent to the boiler flue outlet connection.
c.
A minimum of 600mm (2') of vertical flue directly above the
boiler should be provided.
(R)
=
the horizontal distance between the centre line
of the cylinder and the boiler tappings used -
measured along the pipe run
(H)
=
the vertical distance between the top of the
boiler and the base of the cylinder
CF 3/140 ONLY
Cylinder capacity:
160 litres minimum
360 litres maximum
Notes.
a.
Flow and return pipes should rise vertically on
leaving the boiler.
b.
Horizontal pipes should be ABOVE ceiling level
and as short as possible.
c.
A MINIMUM inclination of 25 mm per 3 m run
(1" per 10') is required to avoid air locks.
If the above conditions cannot be met then
pumped primaries should be used.
Summary of Contents for CF#/125
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