18
12. Commissioning
IMPORTANT:
TURN ON THE ELECTRICAL POWER SUPPLY TO THE
BOILER. MAKE SURE THAT THE PROGRAMMER IS NOT
CALLING FOR HEAT AT THIS STAGE!
FILLING THE HOT WATER CIRCUT.
1. Check the pressure in the potable vessel is set to 3 Bar
2. Check that all plumbing connections are tight
3. Open the furthest away tap outlet
Note: Make sure that the lling loop is closed at this stage!
5. Turn on the mains water supply to the unit
6. It will take a few minutes to ll the cylinder, once the water
comes through the tap outlet let it run
7. Open the other hot water outlets and purge all air out of the
system
8. Once fully purged close all the outlets and further check for
leaks
FILLING THE PRIMARY HEATING CIRCUT.
THE PRIMARY CIRCUT MUST BE FLUSHED IN AC-
CORDANCE TO BS 7593
1. Connect the primary lling loop and tighten.
2. Make sure that all primary connections are tight before lling.
3. Open the lling loop and allow the system to start lling.
4. Press the right arrow key on the boiler control panel until the
A (bar) led is illuminated.
5. Fill the system to 2 bar, then start to purge the radiators until
all the air is out the system.
6. This will have to be repeated several times to fully purge the
system re-lling as you go.
System protection:
Failure to protect the system will invalidate the manufacturer’s
warranty.
1. Fill the system with cold mains water to the recommended
pressure 1.5 bar and check for leaks, then drain the system
thoroughly making sure all drain cocks are fully open and that
the system is completely drained.
2. Add Fernox F3 cleaner to the system at the furthest point from
the boiler, this is to allow the substance to fully dilute throughout
the system. If you are unsure of the correct dose rate, contact
Fernox on 03301007750 for advice.
3. Re-ll the system and circulate the F3 cleaner prior to the boiler
being red up. Commission the system in the normal way.
The cleansing agent must be in the system for a minimum 1
hour with the system running at normal operating temperature.
A longer period of time would be more benecial to the
cleansing process especially if excess ux was used or is
an old system. F3 cleaner can be left in the system for up to
a maximum of one week running on a normal heating cycle.
(We recommend that existing systems are power ushed as
per BS 7593 and PAS33 regulations)
4. Drain and ush the system thoroughly to remove the cleaning
agent and any debris or contaminants. This is a critical part
of the cleaning process and must be carried out correctly.
Use a rinse test meter (TDS), such as the Fernox CTM.
The reading must be within 10% of the mains ppm value.
5. After the system has been thoroughly ushed and TDS readings
are within 10% you can now add Fernox F1. This will protect
against the formation of scale, corrosion and microbiological
growths. It is crucial however, that for the protector to work
correctly, the system must be properly cleansed and ushed.
6. Now attach the label included within the Fernox F1 packaging
completed and attached adjacent to the boiler. We recommend
inhibitor levels are checked on an annual basis (usually
during the service) or sooner if the system content is lost.
This should be carried out using a Fernox inhibitor Test Kit.
Fernox Technical Service Helpline on 0870 870 0362 for further
assistance.
We recommend inhibitor levels are checked on an annual basis
(usually during the service) or sooner if the system content is lost.
This should be carried out using a Fernox inhibitor Test Kit.
Fernox Technical Service Help line on 0870 870 0362 for further
assistance.
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