Honeywell Flame Amplifier Cross Reference (Legacy to 7800 Series)
The amplifier is the most commonly replaced component in a Honeywell flame safeguard system — and the most commonly mis-ordered, because the amplifier, detector, and control have to match as a set. This cross-reference maps discontinued Honeywell amplifiers to their current 7800 Series equivalents (R7847, R7848, R7849, R7861, R7852 families) and flags the combinations that don’t carry over.
The critical rule from Honeywell’s own documentation: 7800 Series amplifiers only work with 7800 Series controls, and several legacy detectors are incompatible with the 7800 platform entirely — a C7020 or C554A sensor means the detector gets replaced along with the amplifier. The tables below list each obsolete amplifier, its replacement, the detector families each supports, and self-check (Dynamic Self-Check) equivalents for C7012E/F ultraviolet applications.
If your control is also obsolete, start with our programmer and primary control cross-references instead — the amplifier follows from the control you land on, not the other way around.
We keep the common 7800 Series amplifiers on the shelf, including the R7849A1023 UV amplifier ($275, typically same-day). Send us your amplifier and scanner model numbers together and we’ll confirm the matched pair.
Table of Contents
1. Flame Amplifier Modernization Rules
The 7800 Series platform (e.g., RM7800, RM7840) utilizes a plug-in amplifier module architecture, allowing you to select the precise amplifier type (Flame Rod, UV, IR) for your specific burner application. The tables below map the legacy amplifiers found in older, integrated chassis or previous-generation systems to the modern 7800 Series plug-in equivalents.
Crucial compatibility note: 7800 Series amplifiers are strictly designed for use only within 7800 Series burner control chassis. You cannot install an R7847 or R7849 amplifier into an older R4140 or BC7000 control.
2. Rectification & Flame Rod Amplifiers
| Legacy Amplifier | 7800 Series Replacement | Compatible Detectors | Notes |
|---|---|---|---|
| R7247A / R7247B | Honeywell R7847A1025 / R7847B1023 | Flame Rod, C7012A, C7012C | Flame response times differ. B version includes Dynamic AMPLI-CHECK. |
| R7247C | Honeywell R7847C1005 | C7012E, C7012F | Dynamic Self-Check amplifier. Ensure control chassis supports self-checking logic. |
3. Ultraviolet (UV) Flame Amplifiers
| Legacy Amplifier | 7800 Series Replacement | Compatible Detectors | Notes |
|---|---|---|---|
| R7249A | Honeywell R7849A1023 | C7027A, C7035A, C7044A | Standard UV amplifier. (In stock: $275). |
| R7249B | Honeywell R7849B1021 | C7027A, C7035A, C7044A | Dynamic AMPLI-CHECK UV amplifier. |
4. Infrared (IR) Flame Amplifiers
| Legacy Amplifier | 7800 Series Replacement | Compatible Detectors | Notes |
|---|---|---|---|
| R7248A | Honeywell R7848A1008 | C7015A | Standard IR amplifier. Check scanner alignment during commissioning. |
| R7248B | Honeywell R7848B1006 | C7015A | Dynamic AMPLI-CHECK IR amplifier. |
5. Optical & Solid State Amplifiers
| Legacy Amplifier | 7800 Series Replacement | Compatible Detectors | Notes |
|---|---|---|---|
| R7321 / R7259 | Honeywell R7861A1026 | C7061A, C7061M | Dynamic Self-Check UV amplifier. Ensure correct C7061 scanner polarity. |
| R7452 | Honeywell R7852A1001 / R7852B1009 | Solid State sensors (e.g. C7927, C7962) | B version includes Dynamic AMPLI-CHECK. |
6. Source Reference Documents & Resources
Source Reference Documents:
Related Resources & Categories:
- Honeywell Product Category
- Honeywell R7849A1023 Product Page
- Fireye Programmer to Honeywell 7800 Series Cross Reference
- Fireye to Honeywell Wiring Cross Reference
7. Source Your Conversion Hardware From TCI Supply
We ship these products worldwide! Delivery is normally stock. Request a Quote now or call us at 1-800-755-2883 for expert assistance.
Cross-references are provided as a selection aid. Not all listed replacements are exact drop-in matches — verify voltage, timing, mounting, and wiring requirements against the original before ordering, or call us and we’ll verify it with you.