INSTALLATION INSTRUCTIONS
Put Bar Code Here
66-1089-11
EC7890A1037,
RM7890A1064 or
RM7890B1055 only.
SIL
3
Capable
RM7890A,B,C/EC7890A,B
7800 SERIES Relay Modules
APPLICATION
The Honeywell RM7890A,B,C/EC7890A,B Relay Modules are
microprocessor based integrated burner controls for on/off
automatically fired gas, oil, or combination fuel single burner
applications. The RM/EC7890 Relay Module is intended to
replace the RA890F,G, H Protectorelay® Primary Control. The
RM/EC7890 System consists of a relay module, subbase, and
amplifier. Options include keyboard display module (KDM),
and remote display mounting.
Functions the RM/EC7890 provides include automatic burner
on/off sequencing, flame supervision, system status
indication, system or self-diagnostics and troubleshooting.
This document provides installation and static checkout
instructions. Other applicable publications are:
65-0084: Q7800A,B 22-Terminal Wiring Subbase Product
Data.
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.
65-0109: Flame Amplifiers for the 7800 SERIES Product
Data.
65-0131: 221818A,C Extension Cable Assembly Product
Data.
65-0229: 7800 SERIES Relay Modules Checkout and
Troubleshooting.
65-0249:S7810M ModBus Module.
SPECIFICATIONS
Electrical Ratings (See Table 3):
Voltage and Frequency:
RM7890: 120 Vac (+10/-15%), 50/60 Hz (±10%).
EC7890: 220/ 240 Vac (+10%/-15%), 50/60 Hz (±10%).
Power Dissipation: 10W maximum.
Maximum Total Connected Load: 2000 VA.
Fusing Total Connected Load: 15A maximum, type SC or
equivalent, fast blow.
Environmental Ratings:
Ambient Temperature:
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 number 65-0312 for Certificate Agree-
ment.
Approvals:
RM7890A,B:
Underwriters Laboratories Inc. Listed: File No. MP268,
Guide No. MCCZ.
Canadian Standards Association Certified: LR9S329-3.
Factory Mutual Approved: Report No. J.I.1V9A0.AF.
Swiss RE (formerly IRI) : Acceptable.
Federal Communications Commission: Part 15, Class B,
Emissions.
RM7890C:
Underwriters Laboratories Inc.: Component Recognized.
EC7890:
Factory Mutual: Approved.
EC7890A1037, RM7890A1064:, RM7890B1055
Gastec—EN268, Report 115679/1.
Note: RM7890B1055 is rated cULus and CE.
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