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15.2
Checklist for annual inspection and maintenance
▶ Use this form to guide you through the service and maintenance
procedure. Fill out each step according to the findings and work
performed.
Date
1
Latest fault code from service function 6.A ( page 65).
2
Fresh water inlet filter (Combi boiler KWB appliances only)
( page 65).
3
Visual inspection of the combustion air pipes and vent pipes.
4
Dynamic gas pressure ( page 64).
5
Gas-air ratio at min./max. nominal output
( page 63).
6
Gas and water-side leak test ( page 44).
7
Inspect electrodes ( page 67).
8
Inspect heat exchanger block ( page 68).
9
Check burner ( page 67).
10
Inspect diaphragm in mixer unit ( page 70).
11
Clean condensate trap ( page 69).
12
With the system depressurized, check the
expansion vessel pre-charge pressure vs. the
static head of the heating system.
13
Check the heating system filling pressure.
14
Inspect electrical wiring for damage.
15
Check settings of the heating control.
16
Check set service functions according to commissioning report
( page 78).
Table 26 Maintenance and inspection checklist
Greenstar FS
inches W.C.
(mbar)
min. %
max. %
psi (bar)
psi (bar)
Inspection and maintenance | 71
6 720 810 590 (2015/05)
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