Technical information

36
Drain the entire system rapidly whilst hot, using
the drain tap at the lowest part of the system. Fill
and vent the system as described previously in
section 10.2
Lock or remove the handles from controls valve
‘A’ and bypass valve ‘B’ to prevent unauthorised
adjustment.
10.11 Completion
Adjust the boiler temperature control and any
system controls to their required settings.
For IE, it is necessary to complete a “Declaration
of Conformity” to indicate compliance to I.S.813.
An example of this is given in the current edition
of I.S.813.
Testing Flue Gases: If any doubt exists that the flue
products are not exhausting correctly, investigate
by use of a gas analyser (FGA).
COMMISSIONING -
INSTRUCTIONS TO THE USER
10.7 User Controls and Options
The mains reset switch is used to restart the
boiler after a fault condition has occurred, i.e.
ignition failure.
The water temperature control knob allows the
user to set the desired temperature.
Temperature Display
The digtal display normally shows the operating
temperature of the unit.
10.8 Pump Exercise Program
After a power cut or every 24 hour in frost setting/
summer mode the pump will run for one minute to
prevent it from sticking. This will also occur during
normal operating if there is no demand for more
than 24 hours
10.9 Frost Protection
The boiler has a built in frost protection programme
as long as the electricity and gas are left switched
on.
This device operates the burner and system
pump when the temperature inside the boiler
falls to 3°C.
When the temperature inside the appliance
reaches 10°C the burner will shut down and after
a short period the pump will stop.
This device primarily protects the boiler. Any other
exposed areas of the system should be protected
by a separate frost thermostat.
10.10 Instruct the User
Instruct and demonstrate the lighting procedure
and advise the user on the safe and efficient
operation of the boiler.
Instruct on and demonstrate the operation of any
heating system controls.
Advise the user on the use and maintenance
of any scale reducer and pass on any relevant
instructional documents.
Advise that to ensure the continued efficient and
safe operation of the boiler it is recommended
that it is checked and serviced at regular intervals.
The frequency of servicing will depend upon the
installation conditions and usage, but in general,
once a year should be enough.
Draw attention, if applicable, to the current issue of
the Gas Safety (Installation and Use) Regulations,
Section 35, which imposes a duty of care on all
persons who let out any property containing a
gas appliance.
The user shall not interfere with or adjust sealed
components.
It is the Law that any servicing is carried out by a
competent person.
Advise the user that, like all condensing boilers this
appliance will produce a plume of condensation
from the flue terminal in cool weather. This is
due to the high efficiency and hence low flue gas
temperature of the boiler.