Vaillant ecoTEC plus Instructions For Installation And Servicing page 32

8 Inspection and maintenance
Overview of the inspection and maintenance tasks
No. Activity
1 Check the air/ gas flue system and ensure it is not blocked, damaged and is fitted correctly.
2 Measure the gas rate during operation (see table 5.1. inside section 5 commissioning part I). If
the gas rate is lower than the minimum gas rate, follow the maintenance schedule in column
2.
3 Check combustion by measuring CO and CO 2 values, compare to table 9.1. If the measurement
is outside the tolerances follow the maintenance schedule in column 2. If a flue gas analyser
is not available check the ignition and burner flame picture through the viewing window if
incomplete combustion is evident perform the maintenance schedule in column 2.
4 Isolate the appliance from the electrical mains supply, close the gas service valve.
5 Visually inspect the general heat exchanger area for signs of corrosion, sooting or other
forms of damage. If damage is evident perform the tasks in the maintenance schedule in
column 2.
6 Remove the burner module (as described in section 8.1.6.) if maintenance schedule is required
from steps 2, 3 or 5 above. Clean the primary heat exchanger. Fit new burner door seal
kit (observe the assembly instructions enclosed with the kit). Refit the burner module and
tighten the nuts.
7 Check all appliance electrical connections and make adjustments, if necessary.
8 If applicable check/re-pressurise system expansion vessel as necessary.
9 Check the appliance generally, check for dirt/dust and clean if necessary.
10 Check and clean condensate trap and flexible condensate hose.
11 Perform a test operation of the appliance including the heating and hot water systems and
bleed thew system if necessary.
12 Measure the gas rate during operation and ensure it is inside the tolerances specified (see
table 5.1 inside section 5 commissioning part I).
13 Re-check combustion by measuring CO and CO 2 values, compare to table 9.1. Ensure the
measurement is within the tolerances. If a flue gas analyser is not available check the ignition
and burner flame picture visually. through the viewing window.
14 Check boiler for leaks of any kind, rectify as necessary.
15 Complete gas boiler commissioning checklist (Benchmark).
Table 8.1 Inspection and maintenance steps
32
Column 1 Column 2
Inspection Maintenance
must be
carried out
once a year
x
x
x
x
x
x
x x
x x
x x
x x
x x
x
x
x x
x x
Installation and Servicing ecoTEC plus