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General| Display | LCD display |
|---|---|
| Control | Weather-compensated control |
| Type | Control unit |
| Compatibility | Viessmann boilers |
| Category | Heating System |
| Application | Residential and commercial heating |
| Control Type | Digital |
| Fuel Type | Gas, oil |
| Heating Output | Depends on connected boiler |
| Efficiency | Depends on connected boiler |
| Modulation Range | Depends on connected boiler |
| Operating Pressure | Depends on connected boiler |
| Temperature Range | Depends on connected boiler |
Immediate safety actions to take in case of gas leakage.
Safety actions for detecting flue gas and potential poisoning.
Procedure for safely isolating and working on the heating system.
Guidelines for safe repair using original spare parts.
Illustration of the bottom part of the control unit and its connections.
Adjustment to 100ºC (EGO) for the high limit safety cut-out.
Adjustment to 87ºC/95ºC for the control thermostat.
Procedure for inserting the boiler coding card into slot X7.
Diagram showing sensor connections and installation points for outside sensor.
Procedure for testing the high limit safety cut-out function.
Explanation of heating curves relating outside temp. to boiler/flow temp.
Procedure to scan and reset the maintenance message and fault indicator.
Procedure for finding and acknowledging faults displayed on the unit.
Troubleshooting steps for boiler cold, burner does not start issues.
Description of boiler water temperature regulation via burner start/stop.
Control of one heating circuit without mixer and one mixer circuit.
Operation and functions of the cylinder thermostat and time programs.
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