Description
The Honeywell RM7895D1011 is a microprocessor-based relay module used for primary burner control in single-burner gas, oil, or combination-fuel systems. It supports interrupted pilot operation with programmable purge timing and dynamic airflow check functionality.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Honeywell |
| Category |
|
| Part Number |
RM7895D1011 |
| Subcategory |
Burner Control |
| Series |
7800 Series |
| Product Type |
Relay Module |
| Application Type |
Single-burner gas/oil/combination fuel |
| Ignition Type |
Interrupted Pilot |
| Pilot Flame Establishing Period |
Selectable: 4 or 10 seconds |
| Main Flame Establishing Period |
10 seconds |
| Voltage Supply |
120 VAC |
| Frequency |
50/60 Hz |
| Pre-Ignition Purge |
Programmable |
| Airflow Check |
Dynamic airflow switch verification |
| LED Indicators |
5 sequence status LEDs |
| Display Compatibility |
S7800 Keyboard Display Module (optional) |
| Optional Interfaces |
Modbus, Remote Annunciator, First-Out Indicators |
| Contact Configuration |
Requires external amplifier and subbase |
| Weight |
2.30 lbs |
Information About RM7895D1011
The RM7895D1011 is a 7800 Series relay module from Honeywell, developed for managing the on-off firing sequence of industrial or commercial burners using gas, oil, or mixed fuels. It integrates programmable pre-purge cycles, a selectable 4- or 10-second pilot flame establishing period, and a fixed 10-second main flame trial. Operating on 120 VAC at 50/60 Hz, the controller includes features such as dynamic airflow switch check, selectable relight or lockout on flame loss, and history retention via non-volatile memory. The unit requires a separate subbase, amplifier, and prepurge timer for complete system integration and is compatible with Honeywell’s S7800 display and annunciator modules for extended diagnostics and monitoring.
Key Features:
- Automatic Burner Control: Manages sequencing, flame supervision, purge timing, and diagnostics.
- Interrupted Pilot Operation: Supports timed pilot ignition with a switch to main flame.
- Flame Failure Response Time: Configurable to 4 or 10 seconds for pilot; 10 seconds for main.
- Dynamic Airflow Check: Verifies combustion airflow conditions prior to ignition.
- Selectable Lockout Behavior: User can set relight or lockout upon flame loss.
- Status LEDs: Five onboard LEDs provide real-time sequence status indication.
- Plug-In Amplifier Support: Compatible with interchangeable flame amplifier modules.
- Optional S7800 Display: Allows local or remote annunciation of faults and operating status.
- Non-Volatile Memory: Maintains event logs and lockout state after power loss.
- Modular Design: Subbase, amplifier, and prepurge timer required for full operation.
The RM7895D1011 delivers advanced, modular, and configurable control for safe and efficient single-burner applications.
