Unlock Your Boiler’s Potential


All of the above features can be enabled without any additional modules or hardware (except for emissions monitoring, which requires EGA).



boiler schematic animation gif

pdf-icon Sales Handout   pdf-icon Mk8Controller Sales Brochure

The Mk8 MM Controller is a Micro-Modulating system that offers comprehensive control over industrial and commercial boiler/burners.

  • Manage virtually all boiler processes from a single 12.1” multi-touch screen interface without any added modules.
  • Ideal for steam and water boilers (watertube or firetube), kilns and steam generators. Designed for oil, natural gas or both fuels.
  • Linkageless servomotor system and automated flame safeguard create conditions for unmanned boilerhouse.
  • Modbus connectivity allows for remote monitoring and management.

Control more with software unlocks
Access codes unlock advanced features without the inconvenience of hardware changes or added modules:
✓ Autoflame water level management
✓ Analogue water level (requires Autoflame water level)
✓ TDS/Top blowdown
✓ Bottom blowdown
✓ Draught control
✓ Direct Modbus connectivity
✓ First out annunciation
✓ Fully metered, cross-limited control
✓ Steam flow & water flow metering

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FeatureMk8 MM
FeatureMk8 MM Controller
Screen size12.1" (24.5x18.5cm)
TouchscreenMulti-touch capacitive
Flame safeguard

Air/fuel ratio control

IBS/lead-lag sequencing



VSD management


FGR (Flue Gas Recirculation)

Channels4 servos/2 VSD (5th servo via software access code)
Lockout loggingMost recent 128 lockouts
Error loggingMost recent 128 errors
Number of fuel curves4
VPS (Gas Valve Proving)

Outside temperature

Login security

Back up commissioning data via IR port

Boiler log entries1000
Dual fuel support

Air pressure monitoring & proving

Oil pressure monitoring & proving

Fuel flow metering

Commissioning points (not including Open, Closed, FGR & Golden Start)20
Customisable graphics

Flame rod/UV change over optionDual IR and/or UV
Multi language displayEnglish (UK)
English (US)
(More coming)
Deaerator Control

Multi-burner synchronisation on a single boilerUp to ten burners: 1 master, 9 slaves. Conditional fault response. One Mk8 MM Controller is required for each burner.
Download Manager for viewing & troubleshooting MM configuration & performance through a PCAdvanced graphing & table interface
Self-diagnostics for identifying electrical and temperature changes to the MM

UL/CE/AGA approvals

On-board technical manual

Modbus connectivityUnlock with software access code or use DTI
Autoflame water level monitoringUnlock with software access code
Analogue water level monitoringUnlock with software access code. Also requires Autoflame water level monitoring access code.
Feedwater managementUnlock with software access code
Steam/heat flow meteringUnlock with software access code
Top blowdown/TDSUnlock with software access code
Bottom blowdownUnlock with software access code
Draft controlUnlock with software access code
Fully metered, cross-limited combustion controlUnlock with software access code
First out annunciationUnlock with software access code
O2 trimRequires O2 Module
3 parameter (O2, CO2, CO) trimRequires EGA
Emissions monitoring & reportingRequires EGA


Autoflame Mk8 MM Compared to PLC Boiler Control

The Mk8 MM Controller compares extremely favourably across a wide variety of variables to traditional PLC boiler management systems.

 Autoflame Mk8 MMCustom Programmable Logic Control (PLC)
SecurityFundamental system logic can not be compromised by end user. Software is designed to ensure safe operation. With correct access code the end user can modify system logic, which can create unsafe boiler conditions.
IntegrationVirtually all boiler operations can be controlled from a single screen. Servos, probes, valves and other equipment are manufactured by Autoflame to ensure compatibility. 40 years of experience and a fully dedicated R&D team ensures carefully thought out integration. PLC may be configured using proprietary or third party servos, probes and valves. The integration of these components with the PLC is only as good as the technicians configuring it.
Flame safeguard functionality is an integral function of the Autoflame system. Flame safeguard is typically a third-party component that requires careful configuration to operate in concert with the PLC.
SimplicityUsers can quickly access advanced reports and controls through a single, consistent 12.1” capacitive touchscreen interface. PLC configuration and operation is customised. As such, principles for simplifying Graphic User Interface may not be followed.
Multi-languageNative onscreen support in Chinese, Spanish, German & other languages. Most PLC’s only support English.
UpgradeableAdvanced functions are mostly standard, and those that are not can be quickly enabled via software access code. Expanded functionality may be available with additional programming, hardware and wiring.
QualityAll controls are designed and manufactured onsite in UK headquarters, ensuring complete quality control. Touchscreen incorporates a chemically toughened anti-scratch and UV resistant glass, packaged within a steel powder-coated enclosure, providing a NEMA4/IP65 enclosure. System is rigorously tested to UL, CE, and AGA standards, and in compliance with the NFPA 85 safety standards. PLC is typically a PC that is not manufactured for boiler room environments and does not meet UL and CE testing.
CostWhen factoring in complete functionality, integrated touchscreen, and total cost of ownership over product lifetime, Autoflame is typically the lowest cost, highest quality solution. Because of the highly customised nature of each PLC system, they tend to be much more expensive than an off-the-shelf Mk8 MM. When adding the cost of a touchscreen to match the Autoflame spec, the PLC becomes an even worse value.