Key specifications
| Flame detection method | ionisation electrode |
|---|---|
| Application type | central control unit |
| Modulation actuator drive | fan speed and valve control |
| Air pressure switch sensing | air pressure switch |
| NTC sensor input | temperature sensors |
| Function | conventional burner control (flame safeguard) |
111.06EUR
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Description
This control board (SKU SM11444U) is a central control unit for wall-hung gas boilers. It performs conventional burner control (flame safeguard), detecting flame via an ionisation electrode. It reads an air pressure switch and accepts NTC temperature sensors, and it controls modulation through fan speed and valve control. It is designed for use in Baxi Main 24 Fi, Baxi Main 24i, Baxi Quasar Plus 24 Fi, and Baxi Quasar Plus 24i.
Further details
| Application | modern wall-hung boilers and similar heating appliances |
|---|---|
| Application type | electronic control board for wall-hung boilers and heating appliances |
| Control Functions | orchestration of the ignition and safety sequence |
| Flame Failure Behavior | board locks out and signals a fault |
| Mounting pattern | base or plug mounting pattern variants |
Choosing and fitting
Control boards of this type are selected by matching the exact series and type designation of the original, along with supply voltage, safety and pre-purge times, and flame detection method. The physical mounting pattern (base or plug) also varies. Before ordering, verify that the manufacturer code and catalogue number on the existing board match exactly. Boards from different series within the same brand are normally not interchangeable if these parameters differ.
Signs of failure
During operation, the board initiates the fan for pre-purge, reads the air pressure switch, and checks flame via the ionisation electrode. If flame is not proven within the programmed safety time, the board locks out and signals a fault.
Fits equipment
Baxi Main 24 FiBaxi Main 24 IBaxi Quasar Plus 24 FiBaxi Quasar Plus 24 I
All specifications
| Flame detection method | ionisation electrode |
|---|---|
| Application type | central control unit |
| Modulation actuator drive | fan speed and valve control |
| Air pressure switch sensing | air pressure switch |
| NTC sensor input | temperature sensors |
| Function | conventional burner control (flame safeguard) |
Part numbers
| SKU | SM11444U |
|---|---|
| Additional article | 534.568.702 |
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