Product details
Product Overview
RA890G1245 Protectorelay™ Primary Control by Honeywell. A compact flame safeguard control for commercial and industrial burners. It combines safety switch timing, flame response, and alarm contacts in one unit. Designed for 220V, 50/60 Hz systems. Offers reliable operation in demanding environments. Easy to mount on Q270A universal subbase.
Key Features
- Safety Switch Timing: 15 seconds nominal lockout. Prevents unsafe fuel flow.
- Flame Response: 0.8 seconds flame failure response. Ensures fast shutdown.
- Alarm Contacts: SPDT isolated alarm contacts. Provides remote alert capability.
- Versatile Input: Line or low voltage controller compatible. Jumper T-T for line voltage use.
- Flame Detector: Works with C7027, C7035, or C7044 UV scanners.
- Dual Transformer Design: TR1 and TR2 for reliable power separation.
Technical Specifications
- Brand: Honeywell
- Model: RA890G1245
- Voltage & Frequency: 220V, 50/60 Hz
- Power Consumption (60 Hz): 14 VA max, 12 VA standby
- Power Consumption (50 Hz): 18 VA max, 17 VA standby
- Flame Failure Response: 0.8 seconds
- Safety Switch Timing: 15 seconds (nominal)
- Ambient Temperature Range: -20°F to 125°F (-29°C to 52°C) for models without alarm contacts
- Dimensions: 5 x 5 x 5 inches (127 x 127 x 127 mm) including subbase
- Mounting: Q270A Universal Subbase (ordered separately)
Installation & Compatibility
- Controller Wiring: Connect line voltage controller between limit control and terminal 6. Jumper T-T for line voltage operation.
- Parallel Detectors: Follow flame detector instructions when paralleling two detectors.
- Compatible Detectors: C7027, C7035, C7044 Ultraviolet Flame Detectors.
- Subbase: Uses Q270A universal mounting base for flexible installation.
Maintenance & Troubleshooting
- Reset: Manual reset pushbutton on cover.
- Flame Current Test Jack: Easy access for measuring flame signal.
- Visual Indicators: Load relay and flame relay status visible.
Certifications & Compliance
- UL listed for gas groups 6, 6A and oil group 8.
- Safety switch timing tested per UL standards.
- Ambient ratings verified for industrial use.
Package Includes
- RA890G1245 control with cover and thumbscrew.
- Female quick-connects for alarm terminals.
- Installation instructions (not included, available online).
Warranty: 12 months against manufacturing defects.
Shipping: Ships within 12-24 hours via FedEx, UPS, or DHL.
Expert Review
“The RA890G1245 offers a balanced blend of safety and simplicity. Its 15-second safety switch timing and 0.8-second flame response provide solid protection for commercial burners. The SPDT alarm contacts add value for remote monitoring. A dependable choice for HVAC and boiler controls.”
Manager’s Insight
“For facility managers, this control reduces downtime with fast flame failure response. The manual reset ensures operator intervention after lockout. Its wide ambient range makes it suitable for boiler rooms and outdoor enclosures.”
Applications
- Industrial gas and oil burners
- Commercial HVAC systems
- Boiler flame safeguard
- Process heating equipment
Frequently Asked Questions
- What is the safety switch timing?
- 15 seconds nominal. Under extreme voltage or temperature, it may reach 50 seconds per UL.
- Can I use a line voltage controller?
- Yes. Connect it between the limit control and terminal 6, and jumper T-T.
- What flame detectors are compatible?
- C7027, C7035, and C7044 ultraviolet flame detectors.
- Does it include a subbase?
- No. The Q270A universal subbase is ordered separately.
- What is the ambient temperature limit?
- Models without alarm contacts: -20°F to 125°F (-29°C to 52°C).
- How do I reset after lockout?
- Press the reset pushbutton on the cover.
- Is there a test point for flame current?
- Yes. A test jack is provided on the base.
- What are the alarm contact ratings?
- SPDT isolated contacts. Male quick-connects with female connectors included.
- Can I parallel two flame detectors?
- Yes. Follow the detector instructions for parallel wiring.
- What is the power consumption?
- 60 Hz: 14 VA max, 12 VA standby. 50 Hz: 18 VA max, 17 VA standby.
Selection Guide
- Choose this model for 220V, 50/60 Hz systems requiring 15-second safety timing.
- For applications needing alarm contacts, this model includes SPDT isolated contacts.
- Ensure ambient temperature stays within -20°F to 125°F for reliable operation.
- Order Q270A subbase separately for complete mounting.
- Pair with C7027, C7035, or C7044 UV detectors for optimal flame sensing.
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