
57
ENG
Checks before commissioning
g0300122EN rel. 1.0 - 01.12.2021
11.3.4
B
urner calibration at maximum output
Force the burner to operate at maximum output by setting the fan to the maximum speed and analysing the fl ue gas.
UG45/90/180
UG150/300/450
A
B
A
B
Fig. 11.c
Fig. 11.d
Procedure:
After opening the front door and identifying the fan-valve assembly:
using a T25 Torx screwdriver:
• adjust the screw (B - Fig. 11.c) and check that the CO and CO2 values corre-
spond to those in the emissions table;
• to increase the CO2 value, turn the hex key anticlockwise; to decrease it, turn
the key clockwise.
using a 4 mm hex key:
• adjust the screw (B - Fig. 11.d) and check that the CO and
CO2 values correspond to those in the emissions table;
• to increase the CO2 value, turn the screw clockwise; to
decrease it, turn it anticlockwise .
UG45/90/180
UG150/300/450
Fig. 11.e
Fig. 11.f
EMISSIONS TABLE
Gas
CO2 (%)
CO (ppm)
min
max
G20-G25
8.3 ±0.3
9.3 ±0.3
< 80
G30-G31
9.9 ±0.3
10.5 ±0.3
Tab. 11.b