41
It is recommended that the following inspections be
carried out on the boiler at least once a year:
1.
Visually check the appliance for correct installation;
2.
Check the appliance for the correct operation;
3.
Check the flue and flue installation for correct siting,
installation and that it is in good condition.;
4.
Remove the casing as described in Section 7.2;
5.
Check the operation of the safety devices:
- Air Pressure Switch;
- Overheat Thermostat;
- Safety Valve;
- Pump Pressure Switch;
- Ionisation (Flame Detection);
6.
Drain the boiler and check the pressure in the
expansion vessel, ensuring it is 0.7 bar;
7.
Remove the diverter valve motor and clean the
actuators, replacing any damaged seals as
necessary (see Exploded View on Pages 63 & 64
for more details);
8.
Remove, clean and refill the condensate trap and
condensate hoses (see Section 6.3.10), check the
drain system for correct discharge of condensate
and clean if necessary;
9.
Remove and clean the DHW flow switch;
10. Remove and clean the fan;
11. Remove and clean the electrodes with an emery
cloth;
12. Remove and clean the burner;
13. Check and clean the primary heat exchanger as
necessary;
14. Refill the boiler and check the following;
15. Check gas inlet pressure and correct working
pressure;
17. Check the gas rate;
18. Check the correct operations of the timeclock and
room thermostat;
19. Check the DHW flow rates;
20. Advise the customer on the correct use of the
appliance (clock setting and operation, repressurising
etc.);
21. Complete the Service Interval Record (Section 12,
page 69).
5.
MAINTENANCE
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