Technical data

12.0 Servicing the Boiler
33
12.1 Annual Servicing
IMPORTANT: When servicing ensure that both the
gas and electrical supplies to the boiler are isolated
before any work is started.
Hazardous materials are not used in the
construction of Baxi products, however reasonable
care during service is recommended.
1. For reasons of safety and economy, it is
recommended that the boiler is serviced annually.
2. After servicing, complete the relevant section
of the “Benchmark” Installation, Commissioning
and Service Record Log Book. This should be in
the possession of the user.
3. Ensure that the boiler is cool.
4. Ensure that both the gas and electrical
supplies to the boiler are isolated.
5. Remove the outercase and lower door panel.
6. Release the four
1
/
4
turn screws securing the
air box door panel and remove the door (Fig. 51).
7. Disconnect the three lead terminals from the
combustion box door taking note of their positions
(Fig. 51).
8. Undo the four screws securing the combustion
box door and remove the door (Fig. 52).
9. Visually check for debris/damage and clean or
replace if necessary the following:
a) Burner (Fragile - handle with care).
b) Heat exchanger fins.
c) Fan compartment (Check also for condensate leaks).
d) Insulation.
e) Door seals.
f) Electrodes.
g) Check condensate trap for debris. NOTE: If
necessary remove the trap drain plug and
place a vessel underneath to catch the
condensate (care should be taken as this
could be hot). Clean the trap and refit the
drain plug.
h) Top of heat exchanger.
NOTE: General cleaning can be undertaken
using a vacuum. However debris should
only be gently blown off the burner skin
due to its fragile nature.
10. Check system pressure is between 1 and 2.5
bar.
Flue Elbow
Lead Terminals
Fig. 51
Air Box
Door Panel
Fig. 52
Combustion Box
Door Panel