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THERMAFLOW LTD | THERMAFLOW® ELECTRIC COMBINATION BOILER |
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2.7.5 Heating system commissioning
Make sure the boiler and heating system is completely full of water. (SEE ABOVE SECTION 7.2)
Turn on both 24Hr & Interrupted power supplies. Allow approximately 120 - 300 minutes to bring the
boiler up to temperature (depending on model). Check that all external controls, are calling for heat.
Fully open all thermostatic and lock shield valves on each radiator.
The aqua stat, positioned at the bottom of the boiler is pre-set to
25ºC
(
It must remain at this setting
)
Allow this system to reach maximum temperature then switch off both electrical supplies at the isolators.
Drain the system rapidly while still hot.
Fill and vent the system as described in section 7.2 “Filling the central heating circuit” Add inhibitor as
required refer to section 3.8 “Corrosion Inhibitor”
Set to the initial cold fill design pressure, using the external draining tap. Refer to table 1, and section 3.9
NOTE:
The system fill pressure may require to be recharged once or twice in the first two to
three weeks after the initial commissioning of the boiler due to oxygen and air content in the
system being expelled through the automatic air eliminator.
There should be no further need to re-pressurise the system after this period. If the system
requires continuous re-pressurisation, there may be a leak in the installation.
2.7.6 Completion
Set any external heating control to the desired settings.
2.7.7 INSTRUCT THE USER
Instruct and demonstrate the isolating switches then advise the user of the efficient and safe operation of
the boiler.
Instruct and demonstrate the operation of any heating system controls.
Advise the user on the use and maintenance of any scale reducer or water softener and pass on any
relevant instructional documents.
Advise the user that to ensure continued efficient and safe operation of the appliance, it is
recommended
that it is checked and serviced at regular intervals. The frequency of servicing will depend
on the particular installation and usage, but in general once a year should be enough.
Any servicing should be carried out by a person competent to do so.
Advise the user of the precautions necessary to prevent damage to the system and building in the event
of the heating system being out of use during frost and freezing conditions.
Reminder- leave these instructions with the user.
Advise the user that the logbook should be completed by the engineer on completion of commissioning.
Failure to do so will invalidate the warranty
. The user must sign the log book and retain it for future
reference.