Honeywell Resideo Gas MMG810.1Mod.33 Combustion Controller
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The Honeywell Resideo Gas MMG810.1Mod.33 is a microprocessor-based combustion controller designed for the management and supervision of forced draught gas burners in commercial and industrial applications. It ensures safe and efficient burner operation by continuously monitoring the flame status and controlling the burner sequence.
**Technical Parameters:**
* **Supply Voltage:** 100-240V AC, 50/60 Hz.
* **Power Consumption:** Typically 6 VA.
* **Outputs:**
* Gas Valve Outputs: Two safety shut-off valves (MV1, MV2).
* Fan/Combustion Air Damper Output: 1 x 5A, 250V AC resistive.
* Alarm Relay Output: 1 changeover contact, 5A, 250V AC.
* **Flame Detection:**
* Principle: Ultraviolet (UV) flame detection via a UV cell.
* Flame Signal Strength: Adjustable sensitivity.
* Response Time: Typically less than 4 seconds during trial for ignition.
* **Safety Features:**
* Safety Classification: According to relevant standards (e.g., EN 298).
* Lockout: Automatic lockout in case of flame failure or other fault conditions during start-up or operation. Manual reset is required after a lockout.
* Self-Check: Comprehensive self-diagnostic routine upon power-up and during operation.
* Pre-Purge and Post-Purge: Programmed sequences to ensure the combustion chamber is cleared of unburned gases before ignition and after burner shutdown.
* **Operating Conditions:**
* Ambient Temperature Range: Typically -10°C to +55°C.
* Storage Temperature Range: -20°C to +70°C.
* Relative Humidity: Up to 93%, non-condensing.
* **Protection Rating:** The controller itself is typically designed for mounting in a control panel. The enclosure protection rating depends on the specific panel design.
* **Approvals and Compliance:** Designed to meet applicable European and international standards for gas burner controls.
**Description:**
This controller represents a complete combustion management system. It automates the entire burner start-up, operation, and shutdown sequence. The control cycle begins with a pre-purge phase, where the fan operates to clear the combustion chamber. This is followed by a trial for ignition period
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