Kromschröder CM222 Burner Control Modules: CM222-0003,

Technical Dossier

Product Details And Specifications

Kromschröder CM222 Series: Comprehensive Module Range and Technical Overview

The Kromschröder CM222 series represents a core product line within Elster Group's industrial combustion control portfolio, deployed extensively across global heavy industry sectors including petrochemical refineries, chemical processing plants, power generation facilities, and industrial furnace operations. Manufactured in Germany to DIN EN 298 and EN 230 standards, the CM222 family provides programmable burner sequence control with integrated flame supervision, making it a reference-class component in process burner management systems (BMS). Installations of CM222 units are documented in facilities across Europe, the Middle East, and Asia-Pacific, where long equipment lifecycles (15–25 years) create sustained demand for spare parts and replacement modules.

The Evolution of CM222 Architecture

The CM222 series was developed as a successor to earlier Kromschröder electromechanical burner controllers, transitioning the product line to microprocessor-based logic with deterministic timing sequences. Early variants in the CM2xx family used fixed-program EPROM logic with discrete relay outputs. The CM222 generation introduced configurable timing parameters, expanded fault code diagnostics via integrated LED indicators, and improved EMC compliance to meet evolving CE directives. The series operates on 230 V AC supply with standardized DIN rail or panel-mount form factors, ensuring backward compatibility with existing control cabinet wiring harnesses. As the CM222 series has entered its mature/end-of-life phase — with Kromschröder (now part of Honeywell/Elster) transitioning customers toward the BCU (Burner Control Unit) 400/500 series — long-term maintenance support for installed CM222 bases has become a critical procurement requirement. Replacement units are no longer available through standard distribution channels, making specialist suppliers the primary source for both new-old-stock (NOS) and tested-refurbished modules.

CM222 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Kromschröder CM222 burner control series, classified by functional variant and output configuration:

CM222-0003: Standard single-stage burner controller, 230 V AC, integrated ionization flame detector input, DIN rail mount.
CM222-0001: Base variant, fixed pre-purge/safety time sequence, relay output for gas valve and ignition transformer.
CM222-0002: Extended lockout reset variant with remote reset input terminal.
CM222-0004: Two-stage burner control, dual gas valve outputs, extended post-purge timing.
CM222-0005: High/low flame modulation variant, analog setpoint input 0–10 V DC.
CM222-0006: Oil burner variant, photocell (UV/IR) flame detector input, pump relay output.
CM222-0007: Dual-fuel (gas/oil) switchover control, manual/auto fuel selection input.
CM222-0008: Extended safety time variant (TSA = 5 s), for high-capacity industrial burners.
CM222-0009: Compact panel-mount version, IP54 enclosure, for harsh environment installations.
CM222-0010: ATEX-rated variant for Zone 2 hazardous area installations.
CM222-0011: BACnet/Modbus RTU communication interface variant for BMS integration.
CM222-0012: Redundant flame supervision variant, dual detector inputs with cross-monitoring logic.
CM222-0013: Low-voltage 24 V DC supply variant for battery-backed control panel applications.
CM222-0014: Extended diagnostic variant, 7-segment fault code display, serial data output.
CM222-0015: OEM-configured variant for specific boiler manufacturer integration (Viessmann/Weishaupt platforms).
CM222-0016: High-temperature rated variant, operating range –20 °C to +70 °C, for foundry and kiln applications.
CM222-0017: Multi-burner sequencing variant, up to 4 burner zone outputs, master/slave topology.

Sourcing Hard-to-Find & Obsolete CM222 Parts

DriveKNMS maintains a dedicated inventory program for discontinued Kromschröder CM222 modules. As the CM222 series has been formally discontinued by Elster/Honeywell, procurement through OEM channels is no longer possible. DriveKNMS sources CM222 units through controlled secondary market channels, including decommissioned plant equipment, authorized surplus dealers, and direct factory-adjacent stock. All units are catalogued by part number, firmware revision, and production date code. For facilities operating CM222-based BMS under long-term service agreements (LTSA), DriveKNMS provides multi-unit buffer stock programs with guaranteed availability windows. Customers requiring cross-reference to current Honeywell/Elster BCU 400 or BCU 500 series equivalents can request a compatibility assessment. Emergency same-day dispatch is available for critical process outage situations.

Quality Control for the CM222 Range

Each CM222 unit processed by DriveKNMS undergoes a structured functional verification protocol prior to dispatch. Testing covers: supply voltage tolerance verification (207–253 V AC); pre-purge, ignition, and safety time sequence validation against OEM timing specifications; flame signal simulation using calibrated ionization current source (1–10 µA range) and UV photocell simulator; relay output contact resistance measurement (100 MΩ). Units exhibiting timing drift, relay contact wear, or EPROM data corruption are quarantined and not offered for resale. Refurbished units are supplied with a test report and 12-month functional warranty. All packaging includes ESD protection and desiccant for long-term storage compatibility.