Honeywell RM7890B1014/U On-Off Primary Control
Specifications
Manufacturer: Honeywell
Product No.: RM7890B1014/U
Condition： 10 Items in Stock
Product Type: Burner Controls
Product Origin: USA
Payment:T/T, Western Union
Weight: 800g
Shipping port: Xiamen
Warranty: 12 months
Product details
Description
The Honeywell RM7890B1014/U is a microprocessor-based integrated primary burner control designed for automatically fired gas, oil, or combination fuel single burner applications. It provides advanced flame supervision, automatic burner sequencing, and built-in self-diagnostics, incorporating nonvolatile memory to retain history files and sequencing status following power interruptions.
System Requirements and Operational Architecture
Operation of the controller requires a compatible Q7800A or Q7800B universal wiring subbase alongside an interchangeable plug-in flame signal amplifier, such as the R7847, R7848, R7849, R7851, R7852, R7861, or R7886 series. Five onboard LEDs provide immediate sequence status, while optional accessories support remote annunciation, PC interfacing, and keyboard display modules.
Safety and Configuration Features
The unit supports selectable relight or lockout modes upon flame loss and includes built-in shutter drive capability for dynamic self-check applications. It is engineered to operate under standard 120 VAC line power across both 50 Hz and 60 Hz frequencies while maintaining compliance with major industrial safety and emissions approvals.
| Parameter | Specification |
|---|---|
| Model | RM7890B1014/U |
| Brand | Honeywell |
| Product Type | On-Off Primary Control |
| Voltage | 120 VAC (+10, -15%) |
| Frequency | 50 Hz or 60 Hz (±10%) |
| Dimensions (with Q7800A Subbase) | 5 in wide x 5 in high x 5.25 in deep (127 mm x 127 mm x 133 mm) |
| Dimensions (with Q7800B Subbase) | 5 in wide x 5 in high x 6.09 in deep (127 mm x 127 mm x 155 mm) |
| Weight | 1 lb 13 oz (0.8 kg) |
| Vibration Tolerance | 0.5 G environment |
| Storage Temperature Range | -40 deg F to +140 deg F (-40 deg C to +60 deg C) |
| Required Subbases | Q7800A, Q7800B Universal Wiring Subbases |
| Required Amplifiers | R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier |
| Approvals and Certifications | UL Component Recognized (File No. MP268), CSA Certified (File No. LR95329-3), FCC Part 15 Class B, Factory Mutual (Report No. OX4A5.AF), Swiss RE |
Frequently Asked Questions
Q: What core components are required for the RM7890B1014/U to function?
A: The controller requires a Q7800A or Q7800B universal wiring subbase and a compatible Honeywell plug-in flame signal amplifier.
Q: Can the unit be configured for either relight or lockout on flame failure?
A: Yes, it features selectable relight or lockout behavior upon loss of flame during active burner operation.
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