ASTEC PHOENIX Talon, Operation And Service Manual

Page: 11 / 31

PHOENIX Talon - Operation and Service Manual
11
Adjustments
WARNING!
Because all combustion systems are inherently dangerous only qualified and experienced personnel
should attempt to start-up and adjust PHOENIX burner systems.
Qualified personnel are defined as those trained by the ASTEC Burner Systems Group, or ASTEC
Service Department.
Experienced personnel are defined as those who have previously fired an ASTEC Phoenix Burner, under
the supervision of the ASTEC Burner Systems Group, or ASTEC Service Department.
NOTE:
The fuel valves, fuel profile and air profile are pre-set at the factory to simplify burner and process set-up.
However, some adjustment will be required for operation.
1. See the complete Burner Performance Data Sheets for flows, operating pressures, and valve
positions. Data sheets are located inside the burner junction box. If data sheets are missing contact
ASTC Burner Group for a copy.
2. Set the fuel pressure, at the entrance of the burner fuel train, and the atomizing (compressed) air
pressure at the pressure listed on the Burner Performance Data Sheets.
3. Check the linkage settings (if applicable) to make sure they comply with the Burner Performance Data
Sheets. Adjust them if necessary.
4.
Check the flue gas readings for O2 and CO.
a.
On a DOUBLE BARREL

drum where there are minimal amounts of air leaking into the exhaust
system, a typical O2 level in the exhaust stack is 10.5 % at high fire.
b.
The amount of CO should be less than 500 PPM referenced to 3% O2.
c.
Higher CO can be caused by having either too much or too little combustion air (or a problem with
the combustion zone flighting).
5. Altering the fuel / air ratio of the burner requires care and expertise to prevent a dangerously rich
condition.
6. The best way to alter the fuel / air ratio is to alter either the air or fuel profile within the burner control
system.
7.
A less preferred alternative is to vary the fuel pressure slightly.
8.
Record any changes prior to running, on the Burner Adjustment Sheet found in Section-U, and retain
it in your records.
9. The spin vanes affect both flame shape and fuel mixing.
a.
The spin vanes are preset at the factory, and are optimized for most situations.
b.
The spin vanes are not designed to be field adjustable.
NOTE:
Take the flue gas measurements, during the adjustment process, to verify complete combustion.