Overview
The Honeywell RA890G1260 Protectorelay is a solid-state primary control providing electronic flame safeguard protection for industrial and commercial single or dual fuel burners. This protectorelay features 15 second safety switch timing and 3 second flame failure response time. Operating at 120 VAC, it supports ultraviolet flame detection, provides SPDT alarm contacts, and performs a safe-start check with a 15-second safety timing and 3-second flame response for reliable burner protection.
Key Features
- Designed for interrupted ignition with intermittent pilot on gas burners, and interrupted or intermittent ignition on oil burners.
- Features SPDT alarm contacts, safe-start protection, and solid-state circuitry for dependable burner supervision and fast fault response.
- This solid-state controller continuously monitors the burner flame through an ultraviolet (UV) flame detection system, recycling operation if the flame signal is lost during the run cycle.
- Use with a C7027, C7035 or C7044 minipeeper ultraviolet flame detector for flame sensing.
- Includes built-in protection against ignition crossover in flame rod systems.
- The strong thermoplastic base, solid-state design, and self-checking circuitry enhance reliability, while captive mounting screws simplify installation and service.
Technical Specifications
- Input voltage: 120 VAC, 50/60 Hz
- Flame detection method: Ultraviolet (UV)
- Safety switch timing: 15 seconds
- Flame failure response time (FFTR): 3 seconds
- Alarm contacts: SPDT relay
- Circuit type: Solid-state electronic
- Mounting: Q270A1024 subbase compatible
- Operating temperature range: -20°F to +115°F
- Shipping weight: 3.0 lbs
Typical Applications
The RA890G1260 provides safeguard control for single or dual fuel burners in heating systems, boilers, and industrial combustion equipment. Designed for interrupted ignition with intermittent pilot on gas burners, and interrupted or intermittent ignition on oil burners. Common applications include commercial HVAC systems, industrial process heating, and commercial water heaters requiring reliable flame monitoring and lockout protection.
Compatibility & Replacements
Compatible With
- C7027 UV flame detector
- C7035 UV flame detector
- C7044 UV minipeeper flame detector
- Q270A1024 mounting subbase
- C7012A/C ultraviolet flame detector
Replaces / Drop-In Replacement For
- Replaces RA890E in most applications and mounts on same Q270A1024 Subbase.
- Can directly replace RA890E and mount on same Q270A Subbase.
- Note: RA890G1260 has been discontinued — suggested alternative is RM7890A1015 with additional components R7849A1023 and Q7800A1005
Works With
- Flame rod rectification circuits
- Rectifying photocell flame detection systems
- Standing pilot configurations (with jumper wire modification)
- Interrupted and intermittent ignition pilot circuits
