Honeywell R7842A Flame Rod Relay

Honeywell R7842A Flame Rod Relay — Flame Safeguard Control for Saudi Industrial and Commercial Burners

The Honeywell R7842A is a flame safeguard relay designed for industrial and commercial burner applications across Saudi Arabia. From small water heaters in Jeddah hotels to large package boilers in SEC power plants, the R7842A provides proven, reliable flame monitoring that prevents dangerous burner firing without flame presence.

Saudi Aramco and SABIC engineering standards require flame safeguard systems on all burners above a certain firing rate. The R7842A's flame rod input provides an economical, simple flame detection solution for gas-fired burners — meeting regulatory requirements while keeping system cost down for price-sensitive applications.

Key Features

Flame Rod Input: Compatible with standard flame rods (ceramic electrodes) — cost-effective flame detection for natural gas and refinery gas burners.

Relay Outputs: Main fuel valve output, pilot valve output, and alarm output — all required control functions for a complete burner management system.

Permanent Ignition: Continuous ignition transformer during run — provides spark ignition confirmation for flame establishment.

Lockout on Flame Loss: Automatic lockout within 3 seconds of flame loss — prevents fuel accumulation in furnace, complying with Saudi Aramco safety requirements.

Applications in Saudi Arabia

SEC Power Plant Auxiliary Burners: R7842A monitors boiler ignition pilots and main burners — required flame safeguard for SEC's Jeddah and Riyadh power generation units.

Jeddah Hotel Steam Boiler: Commercial steam boiler flame safeguard — required by Saudi Civil Defense for boiler licensing in commercial buildings.

Technical Specifications

Frequently Asked Questions

Q1: Can R7842A be used with oil burners? R7842A with flame rod is designed primarily for gas flame detection. For oil burners, Honeywell recommends the R7847 UV scanner instead — the flame rod's reliability decreases with oil flames due to soot accumulation on the electrode.

Q2: What is the Honeywell R7842A price in Saudi Arabia? Contact RAZZ at sales@razz.sa for competitive pricing. RAZZ also supplies matching flame rods, ignition transformers, and ultraviolet flame scanners as a complete flame safeguard system.