burner control units
Legacy Burner Management Systems
Legacy Honeywell Combustion Controls Burner Mangement Systems
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Overview
Legacy Honeywell burner controls including RA890. ST795, and R7140. You can find available materials and technical literature for the Legacy Burner Management Systems here.
Specifications
Standards & Certifications
- Approvals
- R7140 - UL/CSA/IRI (status pending at publication)
- RA890F - UL (120 V models), CSA, FM, AGA (model‑dependent)
Processing & Performance Metrics
- User Interface
- Local only (no web or network UI)(RA890F), Optional local keyboard/display module (R7140) inch
Overview
- Technology
- Microprocessor‑based safety control (R7140)
- Product Type
- Legacy Honeywell burner controls including RA890 - Flame Safeguard Primary Control, ST795 - Solid‑State Plug‑In Purge Timer and R7140 - Universal Plug‑In Replacement Control
Electrical Specifications
- Supply Voltage
- 100 to 240 VAC, 50/60 Hz (model‑dependent) (RA890F)
- Power Consumption
- ~7 to 8.5 W max (frequency‑dependent) (RA890F) Watt
Safety, Protection & Reliability
- Safety Switch Timing
- 15 or 30 s (as ordered) (RA890F)
Control, Logic & System Behavior
- Purge Timing
- External timer required (ST7800A)
Software, Configuration & Cyber
- Integration
- Panel‑wired, point‑to‑point
Control, Logic & Functional Behavior
- Functions
- Pre‑purge timing (ST795A)
Fuel, Gas & Media Specifications
- Fuel Type
- Gas, oil, or combination gas‑oil (RA890F)
Ignition, Flame & Supervision Specifications
- Flame Failure Response Time (FFRT)
- 0.8 or 3 seconds (as ordered) (RA890F)
- Flame Detection
- Rectification (flame rod), photocell, UV (C7012A/C) (RA890F)
- Via R78xx flame amplifiers (R7140)
Standards & Certifications
- Approvals
- R7140 - UL/CSA/IRI (status pending at publication)
- RA890F - UL (120 V models), CSA, FM, AGA (model‑dependent)
Processing & Performance Metrics
- User Interface
- Local only (no web or network UI)(RA890F), Optional local keyboard/display module (R7140) inch
Overview
- Technology
- Microprocessor‑based safety control (R7140)
- Product Type
- Legacy Honeywell burner controls including RA890 - Flame Safeguard Primary Control, ST795 - Solid‑State Plug‑In Purge Timer and R7140 - Universal Plug‑In Replacement Control
Electrical Specifications
- Supply Voltage
- 100 to 240 VAC, 50/60 Hz (model‑dependent) (RA890F)
- Power Consumption
- ~7 to 8.5 W max (frequency‑dependent) (RA890F) Watt
Safety, Protection & Reliability
- Safety Switch Timing
- 15 or 30 s (as ordered) (RA890F)
Control, Logic & System Behavior
- Purge Timing
- External timer required (ST7800A)
Software, Configuration & Cyber
- Integration
- Panel‑wired, point‑to‑point
Control, Logic & Functional Behavior
- Functions
- Pre‑purge timing (ST795A)
Fuel, Gas & Media Specifications
- Fuel Type
- Gas, oil, or combination gas‑oil (RA890F)
Ignition, Flame & Supervision Specifications
- Flame Failure Response Time (FFRT)
- 0.8 or 3 seconds (as ordered) (RA890F)
- Flame Detection
- Rectification (flame rod), photocell, UV (C7012A/C) (RA890F)
- Via R78xx flame amplifiers (R7140)
- Approvals : R7140 - UL/CSA/IRI (status pending at publication)|RA890F - UL (120 V models), CSA, FM, AGA (model‑dependent)
- User Interface : Local only (no web or network UI)(RA890F), Optional local keyboard/display module (R7140) inch
- Technology : Microprocessor‑based safety control (R7140)
- Supply Voltage : 100 to 240 VAC, 50/60 Hz (model‑dependent) (RA890F)
- Safety Switch Timing : 15 or 30 s (as ordered) (RA890F)
- Purge Timing : External timer required (ST7800A)
- Product Type : Legacy Honeywell burner controls including RA890 - Flame Safeguard Primary Control, ST795 - Solid‑State Plug‑In Purge Timer and R7140 - Universal Plug‑In Replacement Control
- Power Consumption : ~7 to 8.5 W max (frequency‑dependent) (RA890F) Watt
- Integration : Panel‑wired, point‑to‑point
- Functions : Pre‑purge timing (ST795A)
- Fuel Type : Gas, oil, or combination gas‑oil (RA890F)
- Flame Failure Response Time (FFRT) : 0.8 or 3 seconds (as ordered) (RA890F)
- Flame Detection : Rectification (flame rod), photocell, UV (C7012A/C) (RA890F)|Via R78xx flame amplifiers (R7140)
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36661/0021/X
CLAMP
36661/0021/X
CLAMP
DSP3956/U
CONFIG TOOL KIT
DSP3956/U
CONFIG TOOL KIT
Q520A1170/U
3 SIDED PROPRIETARY TO CLEAVER BROOKS
Q520A1170/U
3 SIDED PROPRIETARY TO CLEAVER BROOKS
Q795A1012/U
PLASTIC SUBBASE FOR PANEL MOUNTING APPL
Q795A1012/U
PLASTIC SUBBASE FOR PANEL MOUNTING APPL
R7428B1005
Constant RH & Temp Controller with Modbus
R7428B1005
Constant RH & Temp Controller with Modbus
RA890K1260/U
Replacement Kit for RA890G1260/U
RA890K1260/U
Replacement Kit for RA890G1260/U
ST71A1026/U
60 SEC TIMING.
ST71A1026/U
60 SEC TIMING.
ST71A1042/U
PREPURGE TIMER
ST71A1042/U
PREPURGE TIMER
