25SU3-5166 Flame Amplifier | Fireye 120/230VAC DPDT Relay Burner Control

Product Overview

Fireye 25SU3-5166 is a flame amplifier for industrial burner control systems. It operates on 120 or 230 V AC power. This unit provides flame relay outputs for safe burner management. It works with Fireye 45-series scanners for reliable flame detection.

Key Features

• Supply voltage: 120/230 V AC (50/60 Hz)
• Selectable FFRT: 1, 2, or 3 seconds
• Relay output: DPDT, 125 VA pilot duty
• Compatible scanners: 45RM1, 45RM2, 45RM4, 45FS1, 45UV series
• Power consumption: 13 VA (with one scanner)
• Shutter cycle: 0.5 sec closed, 4.5 sec open
• Operating temp: 0..+60°C
• Storage temp: -40..+85°C

Technical Specifications (Hierarchical)

• General
  • Brand: Fireye
  • Model: 25SU3-5166
  • Type: Flame Amplifier
  • Shipping weight: 2.7 kg (6 lb)
• Electrical
  • Supply voltage: 120/230 V AC (+10%, -15%)
  • Frequency: 50/60 Hz
  • Power consumption: 13 VA (one scanner), 20 VA (two scanners + meter)
  • Power factor: 70%
  • Inrush current: 2.5 A peak
  • Flame relay output: DPDT
  • Relay rating: 125 VA pilot duty (terminals 7-8-9, 10-11-12)
• Timing
  • FFRT: Selectable 1, 2, or 3 seconds
  • Shutter closed: 0.5 seconds
  • Shutter open: 4.5 seconds
• Environmental
  • Operating temp: 0..+60°C (32..140°F)
  • Storage temp: -40..+85°C (-40..185°F)
  • Humidity: Max 85% RH (non-condensing)
  • IP rating: 00 (IP20 with dust cover Part 60-2223)
• Compatible Scanners
  • 45RM1, 45RM2, 45RM4
  • 45FS1, 45UVFS1
  • 45UV5-1101, 45UV5-1010, 45UV5-1000

Expert Review

“25SU3-5166 offers reliable flame detection for industrial burners. The selectable FFRT provides flexibility for different fuels. DPDT relay outputs simplify integration with burner management systems. We recommend it for boiler and furnace applications.”

Manager’s Insight

“This amplifier delivers dependable performance at a competitive price. The wide voltage range (120/230V) suits global installations. With 12-month warranty and fast shipping, it is a practical choice for burner upgrade projects.”

Applications & Compatible Devices

• Burners: Gas-fired, oil-fired, and combination burners
• Scanners: Fireye 45RM1, 45RM2, 45RM4, 45FS1, 45UV series
• Industries: Power generation, chemical plants, refineries, HVAC
• Use cases: Flame monitoring, burner management systems, safety shutdown

Installation & Configuration

• Mounting: Install in suitable electrical cabinet (IP00 rating)
• Wiring: Connect scanner to appropriate terminals
• FFRT selection: Set jumper for 1, 2, or 3 seconds
• Relay outputs: DPDT contacts for pilot duty loads
• Dust cover: Order Part 60-2223 for IP20 upgrade

Frequently Asked Questions

• Q: What does FFRT mean?
  Flame Failure Response Time. Selectable 1, 2, or 3 seconds.
• Q: Which scanners work with this amplifier?
  45RM1, 45RM2, 45RM4, 45FS1, and 45UV series scanners.
• Q: What is the power consumption?
  13 VA with one scanner. 20 VA with two scanners and remote meter.
• Q: Can I upgrade the IP rating?
  Yes. Order dust cover Part 60-2223 for IP20 protection.
• Q: What is the relay contact rating?
  125 VA pilot duty for both DPDT relay sets.

Experience-based Q&A

• Q: The amplifier does not detect flame. What should I check?
  Verify scanner alignment and wiring. Check the FFRT setting.
• Q: How to select the FFRT?
  Use the internal jumper. Set to 1, 2, or 3 seconds as needed.
• Q: The relay chatters. What is wrong?
  Check the flame signal strength. Adjust scanner position or sensitivity.

Selection Guide

• For gas-fired burners, use with 45FS1 or 45RM series scanners.
• For oil-fired burners, use with 45UV series scanners (UV detection).
• For fast response, select 1 second FFRT.
• For dusty environments, order IP20 dust cover (Part 60-2223).
• For global installations, 120/230V operation covers most regions.

Comparison with Similar Models

• 25SU3-5166 – Standard model, DPDT relay, selectable FFRT.
• 25SU3-5168 – Similar but with different FFRT options.
• 25SU5-5166 – Higher relay contact rating.

Package Contents

• 25SU3-5166 flame amplifier (1 unit)
• Mounting hardware
• Quick start guide
• Warranty card (12 months)

Shipping & Delivery

• Dispatch: 12–24 hours after order
• Carriers: FedEx, UPS, DHL (express worldwide)
• Tracking: Provided within 24 hours

Contact Information

For inquiries, contact our sales team:

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

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