EC7850A1072
Legacy 220–240 VAC, 50 Hz microprocessor relay module for automatic burner sequencing, flame supervision, diagnostics and status indication. Confirm the exact installed configuration and revision before replacement.
Scope note: Supplied as a model-specific industrial component; system engineering, accessories and site acceptance are verified separately.
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sales1@amikon.cnWhatsapp/Mob:
+86 18150117685Microprocessor-based burner control relay module for EC/RM7850A
This EC/RM7850A-family relay module provides integrated burner sequencing and flame-safeguard control for automatically fired gas, oil or fully modulating power-burner applications.
The exact configuration uses a two-second initiate and two-second post-purge timing and must be matched with the approved wiring subbase, plug-in flame amplifier and ST7800 purge card for the installed burner sequence.
Ordering note: Verify the complete model, installed system, revision and current manufacturer documentation before purchase or installation.
| Manufacturer / family | Honeywell EC/RM7850A |
|---|---|
| Device type | Microprocessor burner-control relay module |
| Supply | 220–240 VAC, 50 Hz |
| Initiate period | 2 seconds |
| First safety time | 3 seconds |
| Pilot stabilization | 3 or 5 seconds |
| Main trial time | 5 seconds |
| Post-purge period | 2 seconds |
Compatibility depends on the complete ordering code, installed hardware, wiring and approved engineering data.
The relay module is specified for a 220–240 VAC, 50 Hz supply.
The programmed initiate period is two seconds before the sequence advances.
Pilot stabilization is selectable at three or five seconds and the documented main trial time is five seconds.
Match the approved wiring subbase, plug-in flame amplifier and ST7800 purge card to the burner application and sequence.
Verify line voltage and frequency, purge card timing, flame amplifier, interlocks, valve sequence and flame-failure response before commissioning.
Send the complete EC7850A1072 model, quantity, installed system, destination and clear label photos. Availability and condition will be confirmed before quotation.
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