CenCon
30
G-XM
For indirect heating appliances with DG, and DJ (X) style burners size 200 and above.
BASIC OPERATION
On a call for heating the combustion blower will be enabled and the air actuator will open to the prepurge
setpoint to purge the heat exchanger. Once the prepurge time has elapsed the gas and air actuators will move
to ignition position and then enable the ignition control to start and prove pilot flame, then open the main
safety valve (SSOV). Once the pilot flame has proven and the main flame is established, the G-XM will then
disable the pilot valve. The burner is allowed to operate to maintain the requested discharge air temperature
from the CenCon by modulating the gas and air actuators. If heating is not required the burner will be disabled
and the combustion blower will enter a post purge time, and then shut down.
