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How to fit an auxiliary header tank if necessary
For installations where the upper coil connection is above the level of the engine's
water filling point.
1.
Blank the existing header tank by
using a flat cap that does not
obstruct the overflow pipe.
2.
Fit a new expansion tank nearby, at
a height just above the top of the C-
Warm water storage heater coil.
Connect it to the overflow outlet on
the original header tank, using a
suitable pressure hose (see diagram)
The expansion tank for a car radiator
is suitable for engine cooling systems
up to about 200 litres in total volume.
3.
Fit an air bleed close to the top coil
connection of the water storage
heater. On filling the system with
water, ensure that all the air in the
cooling circuit escapes via this bleed
or from the engine.
4.
On starting the engine check for loss
of liquid and for air locks in the
extended cooling circuit.
6
4
7
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