Adjusting The Air/Fuel Ratio Curves; Fuel Burner Settings - Curve-Points - Unigas HTP2000 Installation Manual

9 ADJUSTING THE AIR/FUEL RATIO CURVES

ATTENTION: when burners are provided with VSD, before setting the air/fuel ratio curves, the Standardization of the motor
speed must be performed (see chapter "Standardization").
1st level 2nd level
Params & Display
RatioControl
9.1

Fuel burner settings - curve-points

Two curve points are factory set (default settings) corresponding to a hypothetic low flame stage
Note: points P1 and P2, are temporally mentioned 10% and 100% load, independently from the actual load. The operator can name the load on each point,
without respecting the actual load value in that point. LMV5x will order those points automatically according to the load values set by the operator.
120
P 1
100
80
60
40
20
0
0
With this setting, by closing the thermostat series, the burner drives to minimum load position P1, after ignition. Then it drives to position P2 without
increasing the output, as both the points are set with actuators minimum opening.
ATTENTION: For burners with FGR and LMV52.400, the parameter is set to "deactivated".
3rd level 4th level
GasSettings
OilSettings
CurveParams
Factory set curve-points
20 40
5th level
60 80
Load [%]
26
6th level Description
Menu level for making the
parameter settings
Parameter settings for fuel/
air ratio control
Parameter settings for firing
on gas or on oil
P 2
100 120
Fuel
AIR
AUX3
VSD