Combustion Analysis - Rendamax R3 EVO Serie Manual De Uso E Instalación

Commissioning

Combustion analysis

-
3
EN -
Operation and Installation manual
Combustion check at full load
Start the boiler in controller stop mode
and go to 50% load. Now the boiler
operates at 50% load. Allow the boiler to
stabilise the combustion for 3 minutes.
Then increase the boiler load step by
step up to 100%.
First check the combustion values of the
pilot burner using the measuring tube on
the back of the boiler (3). The values can
be corrected with the adjustment screw
on the pilot gas valve (2).
Then check the combustion values of the
main burner using a measuring point in
the flue (4). The values can be corrected
with the adjustment screw on the main
gas valve (5).
Attention: When changing between gas
types G20/G25/G31 the main burner full
load adjustment is done on the butterfly
valve (1).
The adjustment is very sensitive, make
tiny adjustments! Lower number on the
butterfly means more gas, higher num-
ber means less gas.
Combustion check at minimum load
Switch the boiler to minimum load (0%)
Check the combustion settings the
same way as described for full load. The
combustion settings for the pilot burner
can be adjusted using the adjustment
screw on the pilot gas valve (6). The
- +
combustion settings for the main burner
can be adjusted using the adjustment
screw on the main gas valve (7).
Combustion check at 50% load
An additional reference check of
combustion values at 50% load is
recommended in order to check if the
gas valve is set in such way, that the
modulating behaviour is normal. The CO
value should be in between the settings
of full load and minumum load. CO value
should be equal to full load and minimum
load values.
Make sure that the boiler is set to
automatic operation and controller stop
mode is disabled after the combustion
test is finished.
4
Pilot burner
Combustion settings
for natural gas G20 / G25
CO max %
2
CO max ppm
CO min %
2
CO min ppm
Pilot burner
Combustion settings
for LPG G31
CO max %
2
CO max ppm
CO min %
2
CO min ppm
.
Main burner
Combustion settings
for natural gas G20 / G25
CO max %
2
CO max ppm
CO min %
2
CO min ppm
Main burner
Combustion settings
for LPG G31
2 CO max %
2
CO max ppm
CO min %
2
CO min ppm
All boilers
10.0 ± 0.2
< 1000
10.2 ± 0.2
< 1000
All boilers
11.0 ± 0.2
< 1000
11.2 ± 0.2
< 1000
All boilers
10.0 ± 0.2
< 30
9.3 ± 0.2
< 30
All boilers
11.0 ± 0.2
< 30
11.0 ± 0.2
< 30
37