1 Overview and Benefits
22.05.2017 Mk8 MM End User Guide Page 1
1 OVERVIEW AND BENEFITS
1.1 Features and Benefits
Micro-Modulation (MM) / Flame Safeguard
Fuel/ air ratio control
Full colour touch screen
120V or 230V standard operation 50/60Hz
Controls up to 5 servomotors and 2 variable speed drives (VSD/ VFD)
4 independent fuel programmes
Fully adjustable PID load control for temperature or pressure
Internal flame safeguard – full flame supervision with self-check UV or IR
Dual flame scanner operation (IR and UV scanners)
Gas valve train leak supervision and high/low gas pressure monitoring
Air pressure proving and monitoring
128 lockouts, errors, alarms and warnings stored with date, time, phase and reset
1000 entry system log stored with date, time and status
Online diagnostics showing system electronics information
Single point change for adding, removing and adjusting fuel/air positions on fuel-air curve
Golden start position for optimum ignition position
Flue gas recirculation start position
Variable servomotor travel speed
Burner control safety times user selectable
External voltage/current load control and setpoint adjustment
Outside temperature compensation of boiler setpoint
Second setpoint and run times scheduling
Hand/auto/low flame hold firing modes
Various boiler load detectors available
Fuel flow metering capability – instantaneous and totalised
Fuel flow feedback
Multi-burner capability with synchronised firing rate up to 10 MMs
4-20mA (0-20mA) / 0-10V (2-10V) input for external modulation
4-20mA (0-20mA) / 0-10V (2-10V) output confirming firing rate
Fully metered combustion control for commissioning based on equivalence ratio and excess air
Draft control to maintain stack pressure
Password protection of all safety related functions
Infra-red port for upload/download of commission data