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Siemens Building Technologies Electronic Air / Fuel Ratio Control System CC1P7873.1en
HVAC Products 4 Product range overview 15.10.2002
Additional units required for controlling the burner
Burner controls LAL1..., LAL2...
LGK16..., LOK16...
LFL1..., LEC1...
Actuators SQM54..., SQM30...¹), SQN31...¹)
Single potentiometer for use with actuators SQM..., SQN...90° / 1000 W ASZ12.803
Single potentiometer 135° / 1000 W ASZ12.833
Double potentiometer 90° / 1000 W ASZ22.803
Double potentiometer 135° / 1000 W ASZ22.833
Load controller RWF40...
¹) After a certain number of operating hours, the backlash of the geartrain of these actuators
can reach levels that do not allow the RVW2... to achieve precise positioning, especially in
the case of constant loads with the nominal torque or in heavy duty environments.
In that case, shutdown can occur, requiring the actuators to be replaced.
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