Honeywell RM7895B1013 Burner Control Modules
Configured for intermittent burner management and flame safety safeguarding in commercial combustion equipment, the Honeywell RM7895B1013, also cataloged as the RM7895B1013 Burner Control Unit, operates as a microprocessor-based relay module for 120 VAC 50/60 Hz burner applications.
Suffix Breakdown & Model Matrix
- RM7895B1013: Base model designation for the 7800 Series relay module featuring intermittent pilot operation, dynamic airflow checking, and selectable interlock configurations.
- 7800 Series: Honeywell microprocessor-based burner control platform supporting plug-in programmer modules, dust covers, and keyboard display interfaces.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RM7895B1013 |
| Brand | Honeywell |
| Origin | USA / Global Manufacturing Facility |
| Weight | 2.00 lbs (0.91 kg) |
| Dimensions | 5.0 in x 5.0 in x 5.0 in (standard 7800 chassis form factor) |
| Operating Temp | -40 deg C to +60 deg C |
| Power Consumption | 10 W max |
| Operating Voltage | 120 VAC (+10%, -15%), 50/60 Hz |
| Flame Establishing Period | 4 s to 10 s pilot flame establishing period |
| Diagnostic Features | Dynamic airflow check and nonvolatile fault storage |
Relay Module Safety Execution and Interlock Logic
The module governs burner sequencing operations through internal microcontroller supervision, executing dynamic airflow checks during pre-ignition and operating cycles. Safety interlock loops are continuously monitored to ensure immediate fail-safe state execution, shutting down fuel valves within milliseconds upon detecting airflow loss or flame signal disappearance. The intermittent pilot configuration maintains energization of the pilot valve throughout the main burner firing cycle, while nonvolatile memory logs fault history codes for diagnostic tracking.
Frequently Asked Questions
Q: Can the Honeywell RM7895B1013 module be replaced while the burner subbase is live?
A: No. Main electrical power feeding the burner control subbase must be completely disconnected and locked out prior to removing or inserting the relay module to prevent electrical shock or relay chatter damage.
Q: How is the pilot flame establishing period configured on this module?
A: The pilot flame establishing period is fixed or field-selectable within the 4 to 10 second window depending on installed programming keys and subbase jumper configurations.
Q: What action does the dynamic airflow check perform?
A: The dynamic airflow check verifies that air proving switches transition correctly between open and closed states during pre-purge and run cycles, preventing burner ignition if switch contacts are welded or faulty.
Field Installation Guidelines
- Power Isolation: Shut off all primary 120 VAC power sources supplying the burner management panel before servicing or installing the control module.
- Static Protection: Wear an approved anti-static wrist strap connected to cabinet earth ground while handling the electronic chassis card.
- Subbase Seating: Align the RM7895B1013 module guide pins precisely with the wiring subbase slots and press downward evenly until the plug-in connector pins seat completely. Secure the front mounting screw.
- Grounding and Shielding: Verify that the subbase chassis is securely bonded to a low-impedance earth ground to maintain electrical noise immunity and stable flame detector operation.
Honeywell RM7895B1013 Burner Control Modules
Honeywell RM7895B1013 Burner Control Modules
Configured for intermittent burner management and flame safety safeguarding in commercial combustion equipment, the Honeywell RM7895B1013, also cataloged as the RM7895B1013 Burner Control Unit, operates as a microprocessor-based relay module for 120 VAC 50/60 Hz burner applications.
Suffix Breakdown & Model Matrix
- RM7895B1013: Base model designation for the 7800 Series relay module featuring intermittent pilot operation, dynamic airflow checking, and selectable interlock configurations.
- 7800 Series: Honeywell microprocessor-based burner control platform supporting plug-in programmer modules, dust covers, and keyboard display interfaces.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RM7895B1013 |
| Brand | Honeywell |
| Origin | USA / Global Manufacturing Facility |
| Weight | 2.00 lbs (0.91 kg) |
| Dimensions | 5.0 in x 5.0 in x 5.0 in (standard 7800 chassis form factor) |
| Operating Temp | -40 deg C to +60 deg C |
| Power Consumption | 10 W max |
| Operating Voltage | 120 VAC (+10%, -15%), 50/60 Hz |
| Flame Establishing Period | 4 s to 10 s pilot flame establishing period |
| Diagnostic Features | Dynamic airflow check and nonvolatile fault storage |
Relay Module Safety Execution and Interlock Logic
The module governs burner sequencing operations through internal microcontroller supervision, executing dynamic airflow checks during pre-ignition and operating cycles. Safety interlock loops are continuously monitored to ensure immediate fail-safe state execution, shutting down fuel valves within milliseconds upon detecting airflow loss or flame signal disappearance. The intermittent pilot configuration maintains energization of the pilot valve throughout the main burner firing cycle, while nonvolatile memory logs fault history codes for diagnostic tracking.
Frequently Asked Questions
Q: Can the Honeywell RM7895B1013 module be replaced while the burner subbase is live?
A: No. Main electrical power feeding the burner control subbase must be completely disconnected and locked out prior to removing or inserting the relay module to prevent electrical shock or relay chatter damage.
Q: How is the pilot flame establishing period configured on this module?
A: The pilot flame establishing period is fixed or field-selectable within the 4 to 10 second window depending on installed programming keys and subbase jumper configurations.
Q: What action does the dynamic airflow check perform?
A: The dynamic airflow check verifies that air proving switches transition correctly between open and closed states during pre-purge and run cycles, preventing burner ignition if switch contacts are welded or faulty.
Field Installation Guidelines
- Power Isolation: Shut off all primary 120 VAC power sources supplying the burner management panel before servicing or installing the control module.
- Static Protection: Wear an approved anti-static wrist strap connected to cabinet earth ground while handling the electronic chassis card.
- Subbase Seating: Align the RM7895B1013 module guide pins precisely with the wiring subbase slots and press downward evenly until the plug-in connector pins seat completely. Secure the front mounting screw.
- Grounding and Shielding: Verify that the subbase chassis is securely bonded to a low-impedance earth ground to maintain electrical noise immunity and stable flame detector operation.
