LTA Oxygen Trim Control
Benefits
- Complete Oxygen Trim Package
- Minimum Fuel Usage
- Real Time Boiler Efficiency Display
- Interfaces With Existing Flame Safeguard
The LTA Oxygen Trim System provides easy to install Oxygen Trim Control for single point positioning (jackshaft) burners. The LTA (Link Trim Actuator) is an integral part of the link (rod) that connects the fan lever arm to the jackshaft lever arm. The LTA movement “Lengthens” or “shortens” the fan linkage in order to add or subtract air flow and to keep the Oxygen at setpoint.
Complete Oxygen Trim Package
- LTA Actuator, PCC-III Controller, Firing Rate Sensor, and ZP Oxygen Analyzer provide complete Oxygen Trim control package for a Jackshaft Burner
Minimum Fuel Usage
- Flue Gas Oxygen is used to continuously adjust (trim) the air/fuel ratio.
- Oxygen trim saves fuel by fine tuning the burner to operate safely and reliably at reduced excess air levels throughout the burner firing range.
Real Time Boiler Efficiency Display
- Allows the boiler operator to instantly identify inefficiencies and potential operational problems
Safety
- Flue gas temperature and Oxygen are monitored.
- Low flue gas Oxygen trips the burner after an adjustable time delay.
- High flue gas temperature warning messages and trips are available.
Direct Interface
- Directly Interfaces with Shaft Position Sensor (SPS), potentiometer firing rate sensor or 4-20 mAdc from combustion controls.
Interfaces with Existing Flame Safeguard
- It permits automatic operation
Features
- Manual air trim capability with automatic adaptive gain
- Continuous cell impedance checking for cell health prediction
- Oxygen trim delayed (adjustable) after light off to allow stack oxygen to stabilize
- Simple Auto/Manual control on the front of the controller to allow Automatic or Manual control of the flue gas oxygen trim
- Easy commissioning using “Learn mode”
- Automated purge & light-off under flame safeguard system direction
- RS-485 MODBUS interface is available for off-site monitoring and control
Specifications
LTA Oxygen Controller |
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Controller: Input Power: Actuator Power: |
PCC-III-ZG00 (Click here for a complete hardware specifications) 120 Vac (+/- 15%) 24Vac (transformer shipped loose) |
Inputs |
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Firing Rate: Flue Gas Temp: Flue Gas Oxygen: LTA Feedback: |
Potentiometer or 4-20 mAdc T/C ZP Probe Potentiometer |
Outputs |
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Boiler Efficiency: LTA Actuator: |
4-20 mAdc Triac |
In-Situ Oxygen Sensor, Model ZP |
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Insertion Length: Flange: |
20, 30, 45, 65 or 90" Probe 3" 125 lb |
Thermocouple Assembly |
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T/C: |
Flue Gas Temperature Assembly, 104087D |
Link Trim Actuator |
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Operating Thrust: Stroke: |
22 to 76 lbs, Stroke Dependant 0.15" to 0.75", Field Adjustable |
Firing Rate Sensor, SPS (Optional) |
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Stroke: Output: Enclosure: Linkage Rod: Connection: |
45 to 160 degree 1K Potentiometer NEMA 12 5/16" x 3 ft. linkage Swivel Joint ¼ - 20 threaded |
Standard Equipment |
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Optional Equipment |
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Ordering Information
Additional ZP In-Situ Oxygen Sensor Information
| Order Sensors Separately (Optional) |
Catalog Number |
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| Firing Rate Sensor | SPS |
| Control Panel (Shipped Loose) |
Consult Factory |