Parallel Positioning Boiler Control
Automatic firing rate control for new or existing steam boilers using parallel positioning combustion control with both Oxygen trim and variable speed fan combustion air flow control- Separate controller outputs are provided for each fuel flow control valve, air control damper and Variable Speed Drive (VSD)
- Fuel/air ratio is established and adjusted by use of a “soft” function curve of fuel valve position vs. air fan speed and damper position
- Cross Limiting using VSD and actuator position feedbacks is employed for safety and to prevent combustibles or smoke during load changes
Steam System
- Steam drum pressure is maintained using local PID setpoint control
- Minimum fuel usage – Flue gas oxygen is used to continuously adjust (trim) the fuel/air ratio
- Minimum fan power usage – Fan speed control minimizes damper pressure drop related to fan power usage
- Real time boiler efficiency display to allow the boiler operator to instantly identify inefficiencies and potential operational problems
- Safety – Flue gas temperature and Oxygen are monitored. Warning alarms and burner safety shutdown interlocks are available. VSD speed and actuator position feedbacks are continuously monitored and the burner trips if any are out of position.
Hot Water System
- Hot water temperature is maintained using local PID setpoint control
- Minimum fuel usage – Flue gas oxygen is used to continuously adjust (trim) the fuel/air ratio
- Minimum fan power usage – Fan speed control minimizes damper pressure drop related to fan power usage
- Real time boiler efficiency display to allow the boiler operator to instantly identify inefficiencies and potential operational problems
- Safety – Flue gas temperature and Oxygen are monitored. Warning alarms and burner safety shutdown interlocks are available. VSD speed and actuator position feedbacks are continuously monitored and the burner trips if any are out of position.
Specifications
BurnerMate Panel |
|
|
Controller: Input Power: |
PCC-III-GZS0 120 Vac (+/- 15%) |
Inputs |
|
|
Drum Pressure / Water Temperature: Flue Gas Temperature: Flue Gas Oxygen: Plant Master: Fuel Gas Actuator Feedback: Fuel Oil Actuator Feedback: Air Actuator Feedback: VSD Speed Feedback: |
4-20 mAdc T/C (Option “-ZP”) ZP Probe (Option “-ZP”) 4-20 mAdc* Potentiometer* Potentiometer* Potentiometer 4-20 mAdc (Option “-VSD”) |
Outputs |
|
|
Boiler Efficiency: Fuel Gas Valve Actuator: Fuel Oil Valve Actuator: Air Damper Actuator: VSD Speed Demand: |
4-20 mAdc Triac* Triac* Triac 4-20 mAdc (Optional “-VSD”) |
*These features are standard, but their use is selectable at time of start-up.
Ordering Information
Steam System
| Description | Catalog Number |
|---|---|
| Steam Boiler Control | BM-STPPT |
| Order Sensors Separately (Optional) |
Catalog Number |
| Steam Pressure Transmitter, 4-20 mAdc, 0 to 200 psi, NEMA 4, Smart with single valve manifold |
Consult Factory |
Hot Water
| Description | Catalog Number |
|---|---|
| Hot Water Boiler Control | BM-HWPPT |
| Order Sensors Separately (Optional) |
Catalog Number |
| Hot Water Transmitter, 4-20 mAdc. 0 to 500 F, NEMA 4, with 4.5" depth |
Consult Factory |
| Thermowell, SS, 4.5" x 1/2 NPT | Consult Factory |
Additional Ordering Information
- Specify Model ZP In-Situ Oxygen Sensor
- Specify Variable Speed Drive (VSD)
- Specify Rotary Actuator
- Consult factory for low fire change over, VSD bypass or pnuematic actuators