HTS KS – IFD 244 Burner Control Unit

Overview

The Kromschroeder IFD 244 is an automatic burner control unit designed to ignite and monitor gas burners in continuous operation. It features ionization-based flame supervision and is suitable for directly ignited gas burners up to 350 kW. The unit is rated IP54 and is approved to FM and CSA standards, with EU certification per EN 298.

The IFD 244 incorporates a 2-digit 7-segment display for indicating program status, flame signal intensity, and coded fault messages. It is available in standard versions requiring an external ignition transformer, as well as integrated ignition variants (IFD 244..I) with a built-in ignition unit. DIN-rail snap-mount or screw-mount installation is supported in any mounting position.

Features & Benefits

• Series 200 ionization flame control — DC ionization signal greater than 2 μA required for flame detection, with a measuring range of 0–25 μA
• 2-digit 7-segment display — indicates program status, flame signal intensity, and coded fault messages (e.g., 02 = no flame) for fast diagnostics
• Automatic restart after flame failure — single restart attempt during operation reduces unnecessary lockouts
• Immediate lockout on failed start-up — safety time on start-up: 3, 5, or 10 seconds (model-dependent); safety time during operation: less than 1 or 2 seconds depending on version
• Integrated ignition option (IFD 244..I) — built-in ignition unit (22 kVpp, 25 mA) eliminates external transformer requirement
• PLC-compatible signal inputs — 80–122.5 V at 120 VAC or 160–253 V at 230 VAC for direct integration with control systems
• IP54 enclosure — suitable for dusty or splash-prone industrial environments
• Flexible mounting — DIN-rail snap-mount or screw-mount (M5), any mounting position
• FM and CSA approved — meets North American certification requirements; EU certified per EN 298

Technical Specifications

• Supply voltage: 120 VAC or 230 VAC, -15/+10%, 50/60 Hz
• Power consumption: approximately 9 VA; approximately 25 VA additional during ignition (IFD 244..I)
• Flame supervision: ionization, DC signal > 2 μA; measuring range 0–25 μA
• Start-up safety time: 3, 5, or 10 seconds (model-dependent)
• Safety time during operation: <1 second or <2 seconds depending on version
• Ignition time: approximately 2, 3, or 6 seconds depending on model
• Integrated ignition (IFD 244..I): 22 kVpp ignition voltage, 25 mA ignition current, spark gap 2–5 mm
• Ignition output: max 2 A
• Valve output: max 1 A
• Signaling contacts: max 2 A at 253 VAC
• Ionization cable: up to 75 m; ignition cable: up to 5 m (IFD 244) / 1 m (IFD 244..I)
• Burner capacity: directly ignited gas burners up to 350 kW
• Ambient temperature: -20 to +60 °C (-4 to +140 °F), no condensation
• Enclosure rating: IP54
• Overvoltage category: III
• Mounting: DIN-rail snap-mount or screw-mount (M5), any mounting position
• Approvals: EN 298, EU certified (Machinery Directive 2006/42/EC, Low Voltage Directive 2006/95/EC, EMC Directive 2004/108/EC), FM, CSA, AGA, UKCA

Applications

• Directly ignited gas burners up to 350 kW in continuous operation
• Industrial process heating equipment requiring ionization-based flame supervision
• Burner management systems requiring FM and CSA approval for North American installations
• Applications requiring EU certification and EN 298 compliance
• OEM burner assemblies integrating PLC-compatible control signals
• Installations requiring compact DIN-rail mounting in control panels

IFD 244 Accessories

• Refer to the IFD 244 Technical Information document and Operating Instructions for accessories, replacement parts, and compatible components listed by Kromschroeder.

Documentation