RM7897A1002 Honeywell Primary Control
$820.00
The Honeywell RM7897A1002 Primary Control is an advanced automatic burner control designed for single-burner applications fired by gas, oil, or combination fuels. Operating on 120 VAC, this unit provides a programmable post-purge cycle, pre-ignition sequencing, and a selectable pilot flame establishing period of 4 or 10 seconds.
Engineered for reliability, it features non-volatile memory to retain data after power loss, blinking LED fault annunciation for fast diagnostics, and configurable safety interlocks. With a wide -40°F to 140°F ambient temperature rating, the RM7897A1002 adapts to tough industrial environments. Additional options include recycle or lockout modes upon airflow/flame loss and a shutter drive output for enhanced burner performance.
2 in stock
UPC: 85267261685
RM7897A1002 Honeywell Primary Control Data Sheet
RM7897A1002 Honeywell Primary Control Installation Guide
RM7897A1002 Honeywell Primary Control Checkout Sheet
RM7897A1002 Honeywell Primary Control
The Honeywell RM7897A1002 Primary Control delivers advanced safety, diagnostics, and flexible control for modern burners fired by gas, oil, or combination fuels. Designed for demanding environments, it’s engineered to reliably manage ignition sequences, flame detection, and post-burn purge cycles—helping improve performance, safety, and compliance in industrial or commercial heating systems.
Key Features & Benefits
Comprehensive Burner Sequencing: Manages every stage of burner operation—from pre-ignition through main firing to post-purge—so you get clean ignition and efficient burner cycles.
Intelligent Diagnostics & Fault Codes: Integrated LEDs blink out fault codes and status, letting technicians troubleshoot quickly without guesswork.
Non-Volatile Memory: Maintains critical settings and operational history even after power loss, easing recovery and reducing downtime.
Flexible Interlocks & Safety Options: Selectable safety options, airflow/flame loss response, optional remote reset, optional PC interface—all configurable to meet your system’s needs.
Typical Applications
Oil, gas or dual-fuel single burner systems
Commercial boiler rooms, heating plants, and industrial process heating
Retrofit projects requiring modern safety upgrades
Situations with remote monitoring, diagnostics, or extended maintenance cycles
Overview
Microprocessor-based integrated full-function primary burner control for automatically fired gas, oil, or combination fuel single burner applications. Programmable Post Purge. Requires S7800A1142 Display to program post purge feature.
Features
- Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting.
- Subbase, amplifier and purge card are required for operation.
- Options include PC interface, keyboard display module, DATA CONTROLBUS™ Module, remote display module, first-out expanded annunciator, and COMBUSTION SYSTEM MANAGER™ software.
- Five LEDs provide sequence information. Power LED blinks fault code on Safety Shutdown.
- Interchangeable plug-in flame amplifiers.
- Local or remote annunciation of operation and fault information.
- Nonvolatile memory retains history files and sequencing status after power loss.
- Optional remote reset capability.
- Optional report generation.
- Selectable recycle or lockout on loss of airflow or flame.
- Shutter drive output.
- Airflow switch check.
- Delayed main valve.
- Programmable post purge using S7800A1142 Keyboard Display (not provided).
Product Specifications
| Application | On-Off Primary Control with Pre and Programmable Post purge |
| Dimensions (in.) | 5 in. wide x 5 in. high x 5 1/4 in. deep with Q7800A Subbase x 6 3/32 in. deep with Q7800B Subbase |
| Dimensions (mm) | 127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B Subbase |
| Used With | 7800 Series Amplifiers |
| Weight (lb) | 1 lb 15 oz |
| Weight (kg) | 0.9 kg |
| Comments | Includes blinking LED fault annunciation feature |
| Frequency | 50 Hz; 60 Hz (±10%) |
| Approvals, Underwriters Laboratories Inc. | Component Recognized, File No. MP268; Guide No. MCCZ. |
| Approvals, Canadian Standards Association | Certified, File No. LR95329-3. |
| Voltage | 120 Vac (+10, -15%) |
| Shipping and Storage Temperature Range (F) | -40 F to +140 F |
| Shipping and Storage Temperature Range (C) | -40 C to +60 C |
| Approvals, Federal Communications Commission | FCC Part 15, Class B, Emissions. |
| Flame Establishing Period – Pilot | 4 sec or 10 sec |
| Interlocks | Selectable |
| Preignition | Yes |
| PrePurge | Determined by ST7800A Purge Timer Card |
| PostPurge | programmed with S7800A1142 display |
| Required Components | Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card. |
| Pilot Type | selectable |
| Vibration | 0.5 G environment |
| Approvals, Control Safety Devices | Acceptable: CSD-1 |
| Approvals, Swiss RE | Acceptable |
| Approvals, Factory Mutual | Report No. OX4A5.AF. |
| Weight | 4 lbs |
|---|---|
| Dimensions | 9 × 9 × 9 in |
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