GENERAL GUIDANCE ON APPLICATIONS
Frame 10 is intended to provide basic information only on the
application of the Ideal Concord Super boiler. British Gas
approval has not been sought in the matter.
It is impossible to cover all applications and installers are
recommended to contact Ideal Boilers if advice on a specic
application is required.
It is essential that the water ow rates given in Table 1 &
2 be maintained within the limits stated - therefore any
compensating devices must not be connected to Ideal
Concord Super boilers directly but may be used in
conjunction with a mixing header. The mixing header must
be sized at least one pipe size larger than the boiler ow and
return manifold size. This will avoid hydraulic interference
between the boiler primary pump and system zone pumps.
The use of a mixing header means that compensating
controls can be used to operate mixing valves on a variable
temperature circuit, without affecting the water ow rate
through the boiler.
10 GUIDE TO MINIMUM REQUIREMENTS FOR OPEN VENT - Feed / Expansion Tank
Height and Boiler Primary Circuit
1. Roof top or single storey applications.
2. Ground oor or basement applications.
1. Cold Feed
(sizes MUST comply
with BS. 6644).
2. Open vent.
(sizes MUST comply
with BS. 6644).
3. Safety valve.
4. Water ow switch.
5. Dual primary pumps.
6. Mixing header
- see note above.
7. Feed and expansion tank.
8. Mixing valve.
9. Highest point in the system.
All dimensions in millimetres (inches)
LEGEND
GENERAL
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