Key specifications
| Flame detection method | ionisation |
|---|---|
| Application | modern wall-hung boilers |
| Safety feature | lockout on flame failure |
| Behaviour in the event of flame failure during operation | lockout |
| Replaces part numbers | 710825400 |
| Interchangeability | not interchangeable across different models |
| Sensing inputs | heat demand signal |
| Air pressure switch sensing | air pressure switch |
| NTC sensor input | NTC sensors |
| Actuator control | three-way valve, circulation pump |
| Modulation actuator drive | gas valve or air damper |
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117.90EUR
in stock · 3excl. VAT · import VAT and duties on delivery · shipping calculated at checkout
- Delivery to 97 countries
- Original manufacturer part
- Dispatch within 24 h for stocked items
Description
This printed circuit board is a control board for modern wall-hung boilers and is intended for Westen applications. It uses ionisation flame detection and performs a lockout on flame failure. The board reads the heat demand signal, checks the air pressure switch, and accepts NTC sensor inputs. It also controls a three-way valve, a circulation pump, and the gas valve or air damper for modulation. This board is not interchangeable across different models.
Further details
| Control Functions | ignition sequence, safety timing, modulation logic |
|---|
Choosing and fitting
Parts of this type are selected by exact series and type designation because they are matched to a specific boiler model. Before ordering, compare the supply voltage, safety time, pre-purge time, and flame detection method with the original. Verify the part number and the original boiler model, as two similar-looking boards may have different safety times. A mismatch is a safety hazard.
All specifications
| Flame detection method | ionisation |
|---|---|
| Application | modern wall-hung boilers |
| Safety feature | lockout on flame failure |
| Behaviour in the event of flame failure during operation | lockout |
| Replaces part numbers | 710825400 |
| Interchangeability | not interchangeable across different models |
| Sensing inputs | heat demand signal |
| Air pressure switch sensing | air pressure switch |
| NTC sensor input | NTC sensors |
| Actuator control | three-way valve, circulation pump |
| Modulation actuator drive | gas valve or air damper |
Part numbers
| SKU | SM11470U |
|---|---|
| Additional article | 534.568.721 |
| Model | SM11470 |
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