New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Mk7 Expansion PCB

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Features Existing Features Water Level Controls First out Annunciation Bottom Blowdown TDS Control Shunt Switch Philosophy Steam Flow metering New Features Draft Control 2 nd Low Probe Bottom Blowdown Time Reduction Continuous Modulating TDS

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Autoflame Draft Control Maintains ideal draft conditions regardless of changing firing rates and stack conditions Entered at each point during the commissioning process Stack pressure is controlled by Pressure sensor Stack Damper PI loop Increase in efficiency of heat transfer Slower combustion velocities

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Schematic

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Example – burner not firing Damper closes completely Keeping residual heat in the boiler Preventing induced draft from cooling the boiler

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Example – purge Damper opens fully To the commissioned “open” position

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Example – low fire Damper moves to commissioned position 30° Corresponds to a commissioned pressure ?mbar

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Example – increase in ambient pressure Damper moves to maintain commissioned pressure Maximum change of 20% Between ° Maintaining ?mbar

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Example – decrease in ambient pressure Damper moves to maintain commissioned pressure Maximum change of 20% Between ° Maintaining ?mbar

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Example – cannot maintain ideal draft Damper moves to maintain commissioned pressure, but cannot achieve commissioned pressure Maximum change of 20% 24° Message is flagged on the Mk7 controller

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Servo

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Draft Control Wiring

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB 7 th Channel Set during commissioning Changes are made to the damper position to set the ideal stack pressure

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB 2 nd Low Probe Certified low water cut off probe Internal relay self-checking Used with the Expansion PCB or standalone Stainless steel and PTFE construction Cut to length Quick Connect Lead Offsite status logging Different technology to capacitance probes

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB 2 nd Low Probe

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB 2 nd Low

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB 2 nd Low Wiring Power Terminals 4P- 4P+ Comms Terminals 5T+ 5T- RS485 Shared with Bottom Blowdown Comms Simple to install No commissioning required Just enable with Expansion Setup 37.1

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Bottom Blowdown Blowdown losses are minimised by reducing the blowdown time This is calculated based on the rate of steam generation as silt and sludge formation is always in ratio to work done (steam generation) assumes 3% of steam generation is lost in bottom blowdown management

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Blowdown Valve Fully stainless steel valve construction with PTFE end user replaceable sleeve seating No need for a compressed air supply Electronic proof of open/close end switches Quick servo disconnect facility for manual actuation Rotary operation ensures water tight shutoff Sealing design concept ensures no leaks (no glands)

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Blowdown Controller Guaranteed Closure on power failure Up to 4 timed Blowdowns over a 24 hour period 4-20mA valve control and position signals Electronic proof of open/close end switches With a Mk7 M, or stand alone Bottom Blowdown sequence logging Programmable via USB

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Bottom Blowdown

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Bottom Blowdown Wiring

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Continuous Modulating TDS Hardware Complete stainless steel assembly Pressure tested to 1000psi Self cleaning probe End user replaceable PTFE liner Software Timed pulsed TDS operation or Continuous modulating TDS Control and repeatability to 0.1° PI control for TDS target Easy to calibrate TDS reading and target values Polarization detection software Data Logging 24 hour TDS history graphs on the Mk.7 MM 2 year TDS history graphs on the Mk.7 DTI

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Continuous Modulating TDS – Above TDS target Target 2500ppm Actual 3000ppm Valve opens fully to reach the TDS target

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Continuous Modulating TDS – Reducing TDS level Target 2500ppm Actual 2750ppm As the TDS level drops, the valve modulates using a PI loop

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Continuous Modulating TDS – Target valve reached Target 2500ppm Actual 2500ppm As the TDS level drops further, the valve modulates to the closed position as the TDS target is reached

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Continuous Modulating TDS – Below TDS target Target 2500ppm Actual < 2500ppm Whenever the TDS level is below the target value, a sample is taken periodically User adjustable time period User adjustable position

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB TDS Probe Servo

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Modulating TDS Wiring

New Product Developments World Leaders in Combustion Management Solutions Mk7 Expansion PCB Thank you for listening