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RM7897A2002 | Honeywell On-Off Primary Burner Control with Programmable Post-Purge
- Regular price
- $949.00
- Sale price
- $949.00
- Regular price
-
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Product Description P/N: RM7897A2002
Description
The Honeywell RM7897A2002 is an on-off primary burner control designed for single-burner systems using gas, oil, or combination fuel. Operating at 120 VAC, it provides supervised pre-purge and programmable post-purge sequencing for safe burner operation. The RM7897A2002 also supports selectable recycle or lockout responses on airflow or flame loss, improving system protection.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC |
| Part Number | RM7897A2002 |
| Subcategory | Burner Control |
| Application | On-Off Primary Control with Pre & Programmable Post Purge |
| Voltage | 120 VAC (+10%, –15%) |
| Frequency | 50/60 Hz (±10%) |
| Used With | 7800 Series Amplifiers |
| Prepurge | Determined by ST7800A purge timer card |
| Postpurge | Programmed with S7800A1142 display |
| Flame Establishing Period | 4 s or 10 s |
| Interlocks | Selectable |
| Preignition | Yes |
| Pilot Type | Selectable |
| Required Components | Q7800A/B subbases, R78xx amplifiers, ST7800A timer card |
| Vibration Rating | 0.5 G environment |
| Dimensions (in.) | 5 W × 5 H × 5¼ D (Q7800A); 6 3/32 D (Q7800B) |
| Dimensions (mm) | 127 W × 127 H × 133 D; 155 D (Q7800B) |
| Storage Temperature (F) | –40°F to +140°F |
| Storage Temperature (C) | –40°C to +60°C |
Information About RM7897A2002
The RM7897A2002 is part of Honeywell’s 7800 Series burner management platform, built to deliver standardized sequencing and flame supervision. Its modular design includes compatibility with Q7800A/B subbases, plug-in flame signal amplifiers, and purge timer cards for flexible system configuration. The control integrates easily into industrial burner systems, supporting serial accessories such as display modules for programming and status indication. Designed for reliable ignition and safe shutdown, it is widely used in commercial and industrial heating systems requiring automatic burner sequencing.
Key Features:
- On-off primary control: Provides supervised burner sequencing with integrated safety logic.
- Programmable post-purge: Adjustable via S7800A1142 display for application-specific purge timing.
- Selectable interlocks: Allows configuration of airflow and flame-loss responses as recycle or lockout.
- Modular component support: Compatible with 7800 Series subbases, amplifiers, and purge timer cards.
- Dual flame-establishing periods: Selectable 4-second or 10-second pilot ignition windows.
- Wide ambient rating: Operates from –40°F to 140°F for harsh industrial environments.
- LED status indication: Provides clear sequencing and diagnostic information.
- Nonvolatile memory: Retains operational history and status in the event of power loss.
The RM7897A2002 delivers the reliability and precision required for automated industrial burner management.
Description
The Honeywell RM7897A2002 is an on-off primary burner control designed for single-burner systems using gas, oil, or combination fuel. Operating at 120 VAC, it provides supervised pre-purge and programmable post-purge sequencing for safe burner operation. The RM7897A2002 also supports selectable recycle or lockout responses on airflow or flame loss, improving system protection.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC |
| Part Number | RM7897A2002 |
| Subcategory | Burner Control |
| Application | On-Off Primary Control with Pre & Programmable Post Purge |
| Voltage | 120 VAC (+10%, –15%) |
| Frequency | 50/60 Hz (±10%) |
| Used With | 7800 Series Amplifiers |
| Prepurge | Determined by ST7800A purge timer card |
| Postpurge | Programmed with S7800A1142 display |
| Flame Establishing Period | 4 s or 10 s |
| Interlocks | Selectable |
| Preignition | Yes |
| Pilot Type | Selectable |
| Required Components | Q7800A/B subbases, R78xx amplifiers, ST7800A timer card |
| Vibration Rating | 0.5 G environment |
| Dimensions (in.) | 5 W × 5 H × 5¼ D (Q7800A); 6 3/32 D (Q7800B) |
| Dimensions (mm) | 127 W × 127 H × 133 D; 155 D (Q7800B) |
| Storage Temperature (F) | –40°F to +140°F |
| Storage Temperature (C) | –40°C to +60°C |
Information About RM7897A2002
The RM7897A2002 is part of Honeywell’s 7800 Series burner management platform, built to deliver standardized sequencing and flame supervision. Its modular design includes compatibility with Q7800A/B subbases, plug-in flame signal amplifiers, and purge timer cards for flexible system configuration. The control integrates easily into industrial burner systems, supporting serial accessories such as display modules for programming and status indication. Designed for reliable ignition and safe shutdown, it is widely used in commercial and industrial heating systems requiring automatic burner sequencing.
Key Features:
- On-off primary control: Provides supervised burner sequencing with integrated safety logic.
- Programmable post-purge: Adjustable via S7800A1142 display for application-specific purge timing.
- Selectable interlocks: Allows configuration of airflow and flame-loss responses as recycle or lockout.
- Modular component support: Compatible with 7800 Series subbases, amplifiers, and purge timer cards.
- Dual flame-establishing periods: Selectable 4-second or 10-second pilot ignition windows.
- Wide ambient rating: Operates from –40°F to 140°F for harsh industrial environments.
- LED status indication: Provides clear sequencing and diagnostic information.
- Nonvolatile memory: Retains operational history and status in the event of power loss.
The RM7897A2002 delivers the reliability and precision required for automated industrial burner management.