RM7897A1002 Honeywell Primary Control

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.