1
st
stage airflow adjustment cam
(orange)
2
nd
stage airflow adjustment cam
(red)
1
st
stage to 2
nd
stage transition cam
(to be adjusted to a position 10-15
o
lower than that of the 2
nd
stage
airflow adjustment cam)
(black)
15
COMBUSTION AIRFLOW ADJUSTMENT BY DAMPER MOTOR
The combustion air enters in the burner via air suction chamber. A flap in the air
suction chamber adjusts this airflow. The air damper actuator in two stage burners
operates this air flap. The system consists of a 1
st
stage airflow adjustment cam,
2
nd
stage airflow adjustment cam and 1
st
stage to 2
nd
stage transition cam. The
stroke of LKS 160 air damper actuator is 90
o
and it takes 5 seconds to complete a
full stroke.
LKS 160 - 39 A5 - 5 S4
Circuit version
Drive time for 90°
Type of drive shaft
Direction of rotation
Model
Series
Figure 19