CenCon
37
M-XM BURNER SETUP
Combustion setup may only be done using a
computer.
MAXITROL VALVE
Power the CenCon and enable the fan switch.
Connect computer to CenCon.
Set airflow as required. Confirm profile pressure
drop is within proper range. If using a Belimo gas
valve actuator, perform the
Ball Valve Actuator
Calibration
first.
Access the burner setup screen by pressing the
Right
arrow computer key.
Enable the heat switch.
Press
Service Mode
, then
High Fire
.
The burner will initiate the ignition sequence.
Adjust the service regulator to achieve design
manifold pressure. Clock the gas flow and adjust
as necessary.
Press
Low Fire
. Set low fire using the mechanical
bypass on the Maxitrol valve. The flame should be
as small as possible while still maintaining a stable
flame across the entire burner.
Press
Setup Complete
.
Return to the home screen and allow the unit to
operate independently.
GAS ACTUATOR CALIBRATION
m
WARNING:
If using a ball valve and actuator for gas it
must be pre-calibrated before attempting to
set combustion offsets. This is normally
completed at initial factory setup, but will
also need to be verified if the actuator is
replaced.
For field serviced, record all offset values,
and then set all values to zero for the gas
actuators. Enter calibration screen and
perform calibration setup. Return and re-set
offset values.
Press the
UP
arrow to enter the actuator
calibration screen.
Press:
Start Setup
, then
Closed (0%)
The gas actuator will move to fully closed (90°)
position, and read 2V. Set the ball valve to fully
closed mechanically, and tighten linkage. The
feedback must be at or very near 2V. Record the
feedback in the space provided.
Press in sequence from low to high fire. At each
stage enter the feedback values for the gas
actuator.
Once complete, press
Start Setup
to release, and
then press the
Down
arrow.
Enable the heat switch.
Press
Service Mode
, then
High Fire
.
The ball valve will move to 100% open. Adjust the
appliance regulator to achieve the design manifold
pressure. Clock the gas flow and adjust as
necessary.
Press
Low Fire
.
Set low fire by adjusting the gas offset valve next
to the Low Fire window, under
Gas Offsets
. The
flame should be as small as possible while still
maintaining a stable flame across the entire
burner.
Press:
Setup Complete.
Press to disable
Service Mode.
Return to the home screen by pressing the
Left
arrow key, and then press Save User Settings.
Burner setup is now complete.
