METHOD STATEMENT FOR POWERFLUSHING A ......the TF1 system fi lter or fi lling loop. METHOD...

Equipment needed: Fernox Powerflow Flushing Machine MKIII; Fernox Powerflushing Filter; Fernox Protector F1; Fernox Cleaner F3 or Fernox Cleaner F5. 1. Turn off all electrical controls and electrically isolate the system. 2. Fully open all wheel-head valves and TRVs to ensure maximum flow through the valve. (Note the setting of each valve, so that the system can be re-instated after flushing.) 3. Set diverter or zone valves to manual. 4. Anti-gravity valves (non-return valves) if fitted should be bridged, by-passed or temporarily removed. 5. For open-vented systems, cap-off or temporarily join together the open-vent and cold-feed to the filling and expansion tank. 6. Connect the Fernox Powerflushing Machine MKIII to the heating system using either a Powerflow Pump Head Adapter or a TF1 Flushing Adapter. Connect the Powerflushing Filter on the return to the Powerflushing Machine MKIII. 7. Open the flow and return valves and allow the unit to run for ten minutes with the system operational and all radiator valves open. Reverse the flow and check and clean the Powerflushing Filter regularly. 8. If the water remains dirty, dump the dirty water to drain whilst adding clean water to the reservoir tank until the water appears clearer. 9. Add Fernox Cleaner F3 / Cleaner F5 to the Powerflushing Machine MKIII via the chemical addition port. 10. Allow the unit to run for a minimum of one hour reversing the flow and checking and cleaning the Powerflushing Filter regularly. During this time, check each radiator is emitting heat correctly with a ‘touch test’. Turn off the boiler. 11. Close off the flow to all of the radiator valves except one by closing the wheel-head valve or TRV. Allow the unit to pump through this radiator and out to drain for two to five minutes whilst maintaining the water level by adding fresh water to the tank. Reverse the flow during this time. 12. Close the flow on the radiator and then move to the next radiator. Open the valves and repeat radiator fl ush. Continue until all of the radiators have been individually flushed. Open up the valves on all radiators and dynamically flush for a further ten minutes or until the difference in TDS measurements between the mains and the system drain water are within 10% of each other. 13. Close the mains water supply and switch off the Powerflushing Machine MKIII. Close the system circulator isolation valves and disconnect the Powerflushing Machine MKIII and Powerflushing Filter from the heating system. 14. Drain down the system as necessary and install a filter from the Fernox TF1 range and protect the system by adding Fernox Protector F1 either via a radiator, the TF1 system filter or filling loop. www.fernox.com METHOD STATEMENT FOR POWERFLUSHING A CENTRAL HEATING SYSTEM Procedure FERNOX RECOMMENDS: Fernox Cleaner F3; Fernox Powerflushing Cleaner F5; Fernox TDS Meter; Fernox Cleaner F3/F5 Test Kit; Fernox Protector F1; Fernox Protector Test Kit; Fernox Powerflushing Machine MKlll, Fernox Powerflushing Filter. Re-commissioning the system Re-connect the system circulator and restore the electrical supply. Remove any temporary connections or caps and reset the valves to their operational positions.

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Transcript of METHOD STATEMENT FOR POWERFLUSHING A ......the TF1 system fi lter or fi lling loop. METHOD...

Page 1: METHOD STATEMENT FOR POWERFLUSHING A ......the TF1 system fi lter or fi lling loop. METHOD STATEMENT FOR POWERFLUSHING A CENTRAL HEATING SYSTEM Procedure FERNOX RECOMMENDS: …

Equipment needed: Fernox Powerfl ow Flushing Machine MKIII; Fernox Powerfl ushing Filter;Fernox Protector F1; Fernox Cleaner F3 or Fernox Cleaner F5.

1. Turn off all electrical controls and electrically isolate the system.

2. Fully open all wheel-head valves and TRVs to ensure maximum fl ow through the valve. (Note the setting of each valve, so that the system can be re-instated after fl ushing.)

3. Set diverter or zone valves to manual.

4. Anti-gravity valves (non-return valves) if fi tted should be bridged, by-passed or temporarily removed.

5. For open-vented systems, cap-off or temporarily join together the open-vent and cold-feed to the fi lling and expansion tank.

6. Connect the Fernox Powerfl ushing Machine MKIII to the heating system using either a Powerfl ow Pump Head Adapter or a TF1 Flushing Adapter.

Connect the Powerfl ushing Filter on the return to the Powerfl ushing Machine MKIII.

7. Open the fl ow and return valves and allow the unit to run for ten minutes with the system operational and all radiator valves open. Reverse the fl ow and check and clean the Powerfl ushing Filter regularly.

8. If the water remains dirty, dump the dirty water to drain whilst adding clean water to the reservoir tank until the water appears clearer.

9. Add Fernox Cleaner F3 /Cleaner F5 to the Powerfl ushing Machine MKIII via the chemical addition port.

10. Allow the unit to run for a minimum of one hour reversing the fl ow and checking and cleaning the

Powerfl ushing Filter regularly. During this time, check each radiator is emitting heat correctly with a ‘touch test’. Turn off the boiler.

11. Close off the fl ow to all of the radiator valves except one by closing the wheel-head valve or TRV. Allow the unit to pump through this radiator and out to drain for two to fi ve minutes whilst maintaining the water level by adding fresh water to the tank. Reverse the fl ow during this time.

12. Close the fl ow on the radiator and then move to the next radiator. Open the valves and repeat radiator fl ush. Continue until all of the radiators have been individually fl ushed. Open up the valves on all radiators and

dynamically fl ush for a further ten minutes or until the difference in TDS measurements between the mains and the system drain water are within 10% of each other.

13. Close the mains water supply and switch off the Powerfl ushing Machine MKIII. Close the system circulator isolation valves and disconnect the Powerfl ushing Machine MKIII and Powerfl ushing Filter from the heating system.

14. Drain down the system as necessary and install a fi lter from the Fernox TF1 range and protect the system by adding Fernox Protector F1 either via a radiator, the TF1 system fi lter or fi lling loop.

www.fernox.com

METHOD STATEMENT FOR POWERFLUSHING A CENTRAL HEATING SYSTEM

Procedure

FERNOX RECOMMENDS: Fernox Cleaner F3; Fernox Powerfl ushing Cleaner F5; Fernox TDS Meter; Fernox Cleaner F3/F5 Test Kit; Fernox Protector F1; Fernox Protector Test Kit; Fernox Powerfl ushing Machine MKlll, Fernox Powerfl ushing Filter.

Re-commissioning the systemRe-connect the system circulator and restore the electrical supply. Remove any temporary connections or caps and reset the valves to their operational positions.