EC7830A, RM7830A, EC7850A,
7800 SERIES Relay Modules
The Honeywell EC/RM7830A and EC/RM7850A are
microprocessor-based integrated burner controls for
automatically fired gas, oil, or combination fuel single burner
full modulation (EC/RM7850A) or on/off (EC/RM7830A)
applications. The EC/RM7830A; EC/RM7850A system
consists of a relay module, subbase, amplifier, and purge
card. Options include keyboard display module (KDM),
Personal Computer Interface, Data ControlBus™ Module,
remote display mounting and Combustion System Manager
Functions provided by the EC/RM7830A and EC/RM7850A
include automatic burner sequencing, flame supervision,
system status indication, system or self-diagnostics and
troubleshooting. Text readout on the Keyboard Display
Module is available in English, Spanish, Portuguese,
Katakana (Japanese), French, German, and Italian
This document provides installation and static checkout
instructions. Other applicable publications are:
63-2278:Q7700 Network Interface Unit Product Data.
65-0084:Q7800A,B 22-Terminal Wiring Subbase
65-0090:S7800A Keyboard Display Module Product Data.
65-0091:S7810A Data ControlBus™ Module Product Data.
65-0095:S7820 Remote Reset Module Product Data.
65-0097:221729C Dust Cover Packing Instructions.
65-0102:ZM7850A Combustion System Manager
65-0109:R7824, R7847, R7848, R7849, R7861, R7886 Flame
Amplifiers for the 7800 SERIES Product Data.
65-0131:221818A Extension Cable Assembly Product Data.
65-0228:S7810B Multi-Drop Switch Module Product Data.
65-0229:7800 SERIES Relay Modules Checkout and
Troubleshooting Product Data.
65-0249:S7810M ModBus Network Protocol.
Electrical Ratings (See Tables 3A, 3B, 3C and 3D):
Voltage and Frequency:
RM7830A and RM7850A:
EC7830A and EC7850A:
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A maximum, Fast Blow, type
SC or equivalent.
Operating: -40°F to 140°F (-40°C to +60°C).
Storage: -40°F to 150°F (-40°C to +66°C).
Humidity: 85% relative humidity continuous, noncondensing.
Vibration: 0.5G environment.
SIL 3 Capable:
SIL 3 Capable in a properly designed Safety Instrumented
System. See form 65-0312 for Certificate Agreement
RM7830A and RM7850A:
Factory Mutual Approved: Report No. J.I.1V9A0.AF.
Swiss Re (formerly Industrial Risk Insurers): Acceptable.
Federal Communications Commission: Part 15,
EC7830A and EC7850A: Factory Mutual Approved.
These products also comply with the following European
Gas Appliance Directive: 90/396/EEC.
Low Voltage Directive: 73/23/EEC.
EMC Directive: 89/336/EEC.
Lloyds Register Approval.
EC7830A: DIN-5F 106/96.
EC7850A: DIN-5F 107/96.
These products are approved according to EN298, "Automatic
gas burner systems for gas burners and gas burning
appliances with or without fans."
Please note the following to comply with EN60730 for remote
mounting of the KDM and/or remote reset module. It is
necessary to provide electrical separation using insulation at
120 Vac (+10/-15%), 50/60 Hz (±10%).
220/240 Vac (+10%/-15%), 50/60 Hz (±10%)
Class B, Emissions.