Step 2: Dry Run; Step 3: Combustion Air Check - Eclipse Linnox SP CCS-LS Installation Manual

Step 2:
Dry run
Step 3:
Combustion air check
14
6. Check the setting of the maximum gas pressure switch and
the minimum air pressure switch. The maximum gas pressure
switch is adjusted 20% higher than the maximum gas pressure
on the burner. The minimum air pressure switch is adjusted to
approx. 20% of the maximum air pressure.
The air pressure depends on the selected combustion air
blower. Please refer to the related project documentation.
1. Ensure that the process air blower is running.
2. Ensure that the manual isolating ball valve is closed.
3. Initiate the electrical supply to start the operating sequence.
The combustion air blower will start running. If the sequence
is operating correctly, the programmer will run through to
the point of ignition, the safety shut-off valves will open and,
in absence of a flame, will proceed to a lockout condition.
Danger:
If simulated limits or simulated flame failures do
not shut down the fuel system within the required
response time, immediately correct the problem
before proceeding.
Note:
On multiple burner systems with a central combustion air
blower, one should remember that the combustion air pressure
will change, depending on the total air demand.
If one burner is adjusted, it is advised to set the combustion
air of all other burners to at least 50% of the maximum
capacity if not in operation. This will prevent flame failures or
inability to reach the high fire capacity when the installation is
switched to normal operation.
Low fire air adjustment procedure:
1. Start the combustion air blower.
2. Drive control motor to low fire position (activate the manual
switch or lock first).
3. Measure air differential pressure between tap (Pa) and the
process tap (Pp).
4. Adjust low fire air if necessary.
Note:
The slot at the end of the BV (air damper) shaft indicates the
position of the BV. The BV is closed when the shaft slot is
perpendicular to the direction of air flow through the BV.
For adjustment of the BV, adjust the lever mechanism.
Eclipse Linnox Model CCS-LS, Installation Guide 159, 2/20/04