Vaillant ecoTEC plus 418 - Page 91

ecoTEC
plus 418
9.1+0.2-
0.5
9.3+0.2-
0.5
<0.0026
10.1+0.0-
1.0
10.3+0.0-
1.0
5 turns
<0.0026
ecoTEC
plus 428
9.1+0.2-
0.5
9.3+0.2-
0.5
<0.0026
10.5+0.3-
0.8
10.7+0.3-
0.8
5 turns
<0.0026
ecoTEC
plus 438
8.8+0.2-
0.5
9.0+0.2-
0.5
<0.0026
9.8+0.2-0
.8
10.0+0.2-
0.8
8 turns
<0.0026
● If required, using a screwdriver, adjust the “A” throt-tle to obtain correct value. (rotating
anti-clockwise to increase). Appliance will remain in this mode for 15 minutes or exit by
pressing “ i ” and “+” simultaneously.
● Repeat the process above and select “P.2” for min rate.
● Press “ i ” to operate appliance in this mode.
● Allow appliance to stabilise.
● Check CO2 value (for case off) as stated in table 9.1 for the boiler installed.
● If required, using a 2mm Allen key, adjust the “B” off-set to obtain correct value (rotating
clockwise to in-crease). When complete repeat the P1 Max rate setting to ensure it is
correct following this.
● After checking the combustion, exit by pressing “ i ” and “+” simultaneously
● Refit the chassis panel and the inner case. (Note the CO2 will increase slightly).
Fig. 9.2 Gas control valve
NOTE:
Only for natural gas: