Honeywell MMI811.1 mod.35 0621120 control box

Resideo MMI811.1 mod.35 0621120 gas burner safety control box for 2-stage forced draught and combi oil/ gas burners.

Possible flame detectors:

• Ionization probe
• Infrared flicker detector

Satronic MMI811.1 mod.35 control unit construction:

The automatic control device is housed in a removable, transparent, non-flammable plastic casing. The system includes a synchronous motor with speed reducers that drives the switching cam. The switching cam is equipped with a colorful display that shows program information. The device features a 12-position cam mechanism that controls the program sequence. Additionally, there are plug-in printed circuit boards with electronic components. The front panel of the control system contains essential control elements, including a backlit button for fault indication and reset, a colorful program display, and a central mounting screw.

Honeywell MMI811.1 mod.35 automatic gas firing device technical data:

• Waiting time at start-up: 9 s
• Max. reaction time for air proving switch: 6 s
• Pre-purge time: 24 s
• Pre-ignition time: 3 s
• T. ignition time: 8 s
• Safety time: 5 s
• Time delay term.6 / term.C: 10 s
• Operating voltage 220 / 240 V (-15… +10%) 50 Hz (50 – 60 Hz)
• Fuse rating: max. 10 A rapid, 6 A slow
• Power consumption: 10 VA
• Amplifier sensitivity: 1 µA
• Min. current from UV tube or ionisation probe: 5 µA
• Flame detector cable: max. 20 m cable length
• Air pressure monitor: working contact 4 A, 230 V
• Infrared flare detector: IRD 1020
• Weight incl. base: 350 g
• Mounting attitude: any
• Insulation standard: IP 44
• Permissable ambient temp.: -20° C… +60°C
• Classified acc. to EN 298: BTLLXN