28
BOXER
combination boiler -
Installation and Servicing
SERVICING
40 SAMPLING POINT
39 SERVICING SCHEDULE
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.
1.
Light the boiler and operate for at least 10 minutes. Check
the gas consumption (refer to table 2).
2.
Connect a suitable gas analyser to the sampling point on
the flue turret.
For correct boiler operation, the CO/CO
2
content of the flue
gas should not be greater than 0.004 ratio.
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 3 but see note above.
3.
Switch OFF the electrical supply.
4.
Remove the casing (refer to frame 41).
5.
Remove the expansion vessel and vertical protection
shield (refer to frame 43).
6.
Clean the main burner (refer to frame 46).
7.
Clean the heat exchanger (refer to frame 47).
8.
Check the main injector for blockage or damage (refer to
frame 52).
9.
Check that the flue terminal is unobstructed and that the
flue system is sealed correctly. Reassemble in the reverse
order.
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.
10.
After completing the servicing or exchange of components
always test for gas soundness and carry out functional
checks in 2 and 3 above.
11.
When work is complete the sealing panel MUST be
correctly refitted, ensuring that a good seal is made.
12.
Complete the service section in the Benchmark log book.
Flue sample
point
Air sample
point
SER
VICING
