31
Henrad SE FF
- Installation
SERVICING
50 SERVICING SCHEDULE
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 step 6 but see note above.
6. Clean the main burner.
7. Clean the heat exchanger. Note.
This must be done with
the heat exchanger and deposits in a dry condition. Refer
to Frame 55.
8. Check the main injector for blockage or damage.
9. Wherever possible remove and clean the condensate
siphon (refer to Frame 74) and check the drain for blockage.
10. Check that the flue terminal is unobstructed and that the
flue system is sealed correctly.
The servicing procedures are covered more fully in Frames
51 to 57 and MUST be carried out in sequence.
Note.
In order to carry out either servicing or replacement of
components the boiler front panel and sealing panel must be
removed. Refer to Frames 12 and 52.
WARNING. Always turn off the gas supply at the gas
service cock, and switch off and disconnect the
electricity supply to the appliance before servicing.
IMPORTANT.
1. After completing the servicing or exchange of components
always test for gas soundness and carry out functional
checks as appropriate.
2. When work is complete the sealing panel MUST be correctly
refitted, ensuring that a good seal is made.
DO NOT OPERATE THE BOILER IF THE SEALING
PANEL IS NOT FITTED.
To ensure the continued safe and efficient operation of the
appliance it is recommended that it is checked at regular intervals
and serviced as necessary. The frequency of servicing will depend
upon the installation condition and usage but should be carried
out at least annually. It is the law that any service work must be
carried out by a registered CORGI installer.
As the installer you may wish to undertake the service contract
yourself or, alternatively, offer to the customer the benefits of the
Henrad Care Scheme, details of which are outlined in the
Householder pack supplied with this boiler.
Note.
Some aluminium oxide build-up on the heat exchanger fins is
quite usual with this type of condensing boiler. Though removal
is recommended annually, the heat exchanger MUST be
inspected and cleaned after a MAXIMUM of two years operation.
1. Remove the boiler bottom panel. Refer to Frame 59,
step 4.
2. Light the boiler and carry out a pre-service check, noting any
operational faults.
3. Check the operation of the pressure switch. Refer to Frame
51.
4. Relight the boiler and operate for at least 20 minutes. Check
the gas consumption.
5. Connect a suitable gas analyser to the sampling point on top
of the boiler . Refer to Frame 51 (optional test).
For correct boiler operation the CO/CO
2
content of the flue
gas should not be greater than 0.004 ratio.
SER
VICING
2. Remove boiler front panel as described in Frame 12.
3. Release the 3 retaining clips on the right hand side of the
panel.
4. Swing the panel open to the left and disengage it from
the boiler.
3. With the boiler running, blow gently into the tube. The
burner should shut down and the 'Burner on' neon
extinguish. The fan should continue to run. If this does
not occur replace the pressure switch. Refer to Frame 71.
4. Remove the flexible tube and refit the boiler bottom panel.
Note.
The pressure switch tapping does not have a cap or
sealing screw and MUST be left open to atmosphere.
51 PRESSURE SWITCH OPERATION
1. Remove the bottom panel. Refer to Frame 13.
2. Connect a flexible tube to the pressure switch tapping,
located at the bottom of the boiler, behind the control box.
Retaining clips
52 BOILER SEALING PANEL REMOVAL
1. Turn off the gas supply at the gas service cock and
disconnect the electricity supply.
Pressure
switch tapping
Flexible
tube
Control box
Flue gas
sampling point
Содержание Henrad SE 30 FF
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