Ferroli 303: 304, Instructions For Use Manual

Page: 21 / 24

21
SAFETY
The law requires that any service work must be carried out by
a Gassafe Registered Engineer. In IE service work must be
carried out by a competent person.
WARNING.
Always turn off the gas supply at the gas service cock.
Switch off and disconnect the electricity supply to the
appliance and any external controls before servicing or
replacing components.
IMPORTANT
After completing the servicing or replacement of
components always:
Test for gas tightness
Test the burner manifold flanges for soundness.
This can be done with leak detection spray whilst
operating the boiler. The gas valve and controls must be
shielded from the spray.
Check the water system is correctly filled and free
of air. Air in the boiler could cause damage to the
heat exchanger. For this reason if an automatic air vent is
fitted it must never be shut off.
Check the inner front and outer jacket panels are correctly
fitted.
With the system hot examine all water connections for sound-
ness.
Check the gas rate and measure the combustion CO/CO2
content. Refer to page 19 for reference on how to force the
burner to maximum and minimum gas rates.
The CO/CO2 ratio of the flue gas on each module should not
be greater than 0.004 ratio. The CO2 values should be cor-
rect to the figures on page 20.
Carry out functional checks as appropriate.
HANDING OVER
ROUTINE OPERATION
Full instructions covering routine lighting and operation of the
boiler are given on the Lighting and Operation Instruction
section of this manual.
Draw the attention of the boiler owner or his representative to
the Lighting and Operating Instructions. Give a practical
demonstration of the lighting and shutting down of the boiler.
Describe the function of the boiler and system controls and
show how they are adjusted and used.
Hand these Installation and Servicing Instructions/User's
Instructions and Log book to the customer and request him to
keep them in a safe place for ready reference. For IE, it is
necessary to complete a "Declaration of Conformity" to indi-
cate compliance to the appropriate standard.
IMPORTANT
Point out to the owner that the boiler must have regular
maintenance and cleaning, at least annually, in order to
ensure reliable and efficient operation. Regular attention will
also prolong the life of the boiler and should preferably be
performed at the end of the heating season.
After servicing, complete the service section of the log book
and return to the owner or their representative.
Recommend that a contract for this work should be made
with the regional gas authority or a Gas Safe Registered
Engineer. In IE servicing work must be carried out by a
competent person.
SERVICING INSTRUCTIONS
To ensure the continued safe and efficient operation of the
appliance it is recommended that it is checked at regular in-
tervals and serviced as necessary. The frequency of servicing
will depend upon the installation condition and usage but
should be carried out at least annually.
Ferroli Ltd does not accept any liability resulting from the use
of unauthorised parts or the repair and servicing of appliances
not carried out in accordance with the Company's recommen-
dations and specifications.
Note.
Some aluminium oxide build-up within the heat exchanger
assembly is quite usual with this type of condensing boiler.
Though removal and cleaning is recommended annually, the
heat exchanger, sump and condensate trap must be inspect-
ed and cleaned after a maximum of 2 years operation.
Light the boiler and carry out function checks, noting any op-
erational faults.
Run the boiler for 10 minutes and then check the gas con-
sumption rate. Refer to Technical Data Table. To force the
burner to maximum and minimum rates refer to page 19.
For correct boiler operation the CO/CO ratio of the flue gas
should not be greater than 0.004 ratio and the CO2 values
should be correct to the figures given on page 20 of this man-
ual. If this is the case and the gas input is at least 90% of the
nominal, then no further action need be taken. If not proceed
to page19 for guidance.
Remove and inspect the fan/venturi assembly.
Remove the burner manifold and inspect the electrodes and
sight glass.
Remove and clean the burner.
Inspect the heat exchanger through the burner opening. Op-
tionally remove the inspection covers on the side of the heat
exchanger. If there are signs of aluminium oxide build up,
spray water down the flue ways taking care not to get water
on the gas valve and controls.
Clean the condensate trap.
Check that the flue terminal and air inlet are unobstructed and
that the flueing and ducting are correctly sealed.
Put the boiler back into normal operation.