Table of Contents
Advertisement
CHEMICAL FLUSHING PROCEDURE USING HYPERFLUSH
1. Switch on the Clearflow pump.
2. Whilst re-circulating water through the pump and the
heating system, slowly add 500ml of HYPERFLUSH to
the Clearflow tank, sufficient for 10-12 radiator
system, (unless it was added on a prior visit), and
ensure thorough distribution around the system.
3. Switch on the boiler, if fitted, and in safe working
order. Allow the system water to reach 50°C, and then
switch boiler off.
4. Circulate throughout the complete system for half to
one hour, reversing the flow direction regularly, and
monitoring the system for leaks.
5. Close off all radiators (one valve only), and allow the
full flow to go through the coil in the hot water
cylinder (if present in the system).
6. Reverse the flow regularly.
7. Divert the full flow to the radiator circuit, in
preparation to putting the full flow of the pump
through each radiator in turn.
8. Fully open both valves of the nearest radiator, on the
ground floor, to the flushing pump.
9. Flush this radiator, reversing the flow regularly, until all
cold spots have disappeared, and the temperature
across the radiator is consistent. Close the radiator
valves.
Note: If your initial system check identified cold or
partially blocked radiators, commence the individual
radiator flushing procedure with the worst radiator
first, progressing to less problematic radiators. This
ensures that the strongest concentration of chemical
is directed at the worst areas of the system.
Issue: May 2023
10. Open the valves on the next radiator, and repeat the
11. Work through the rest of the radiators in turn, so that
12. When you have flushed the last radiator, and it has an
13. With only this radiator open, and the pump set to
14. Go back to the previous radiator that you had flushed,
15. Work your way back around the house in the
16. With the pump still set to dump direct the flow
17. If you have a TDS meter (Total Dissolved Solids) it is
18. Return the flushing pump into normal re-circulation
19. NOTE: When using HYPERFLUSH there is no
Section B – Using the Clearflow pump
procedure.
you have flushed every radiator individually, including
upstairs radiators.
even temperature across the surface, switch the
pump into dumping mode, as previously.
dump, run until the water leaving the dump hose is
completely clear. Now operate the flow reverser and
change the valves to dump in the opposite direction
until clear. When water is clear, close radiator valve.
ensure both valves are open, and repeat the dumping
procedure on this one radiator, alternating the
direction of flow in each direction as you dump. Close
radiator valve.
opposite direction to previously, until you have
dumped on every radiator individually.
through the cylinder coil until it runs clear. Dump in
the other direction until clear.
useful to test the water at this stage.
The reading should be compared with a mains water
sample reading, and the dumping process continued
until both readings are within 5-10% of each other.
mode, re-open all radiator valves, and the cylinder
coil, and move to page B.10.
requirement to neutralise after the flushing process.
Page B.9
Advertisement
Table of Contents
