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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.
SIL
Capable
3
INSTALLATION INSTRUCTIONS
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.
EC7890A1037,
RM7890A1064 or
RM7890B1055 only.
Put Bar Code Here
66-1089-11
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Table of Contents
Related Manuals for Honeywell rm7890a
Summary of Contents for Honeywell rm7890a
- Page 1 RM7890A,B,C/EC7890A,B 7800 SERIES Relay Modules INSTALLATION INSTRUCTIONS APPLICATION SPECIFICATIONS The Honeywell RM7890A,B,C/EC7890A,B Relay Modules are Electrical Ratings (See Table 3): microprocessor based integrated burner controls for on/off Voltage and Frequency: automatically fired gas, oil, or combination fuel single burner RM7890: 120 Vac (+10/-15%), 50/60 Hz (±10%).
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Page 2: Installation
RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES INSTALLATION 9. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, can cause interference with radio communications. It has been WARNING tested and found to comply with the limits for a Class B computing device of Part 15 of FCC rules which Fire or Explosion Hazard. - Page 3 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES Wiring 6. For KDM (KDM), because the KDM is powered from a low voltage, energy limited source, it can be mounted outside of a control panel if it is protected from mechanical damage. WARNING NOTE: Use 13 Vdc power supply any time more than one Electrical Shock Hazard.
- Page 4 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES Table 2. Recommended Grounding Practices. Ground Type Recommended Practice Earth ground (subbase and relay 1. Use to provide a connection between the subbase and the control panel of the module). equipment. Earth ground must be capable of conducting enough current to blow the 15A fuse (or breaker) in the event of an internal short circuit.
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Page 5: General Instructions
RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES Table 4. Combinations for Terminals 8, 9, and 10. Pilot Fuel 8 Main 9 Ignition 10 No Load No Load No Load No Load 4.5A ignition 50 VA Pilot Duty plus 180 VA ignition plus motor 2A Pilot Duty. - Page 6 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES IMPORTANT WARNING Low fuel pressure limits, if used, could be open. Bypass them with jumpers for the remaining static Explosion Hazard. tests (if required). Can cause serious injury or death. Be sure all manual fuel shutoff valves are closed.
- Page 7 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES (HOT) RM7890C TEST CONFIGURATION FLAME SIGNAL JACK JUMPERS N. O. PLUG-IN MICROCOMPUTER FLAME RESET TEST AMPLIFIER PUSH- BUTTON RELAY DRIVE RELAY CIRCUIT STATUS FEEDBACK AND LINE VOLTAGE NUMBERS IN CIRCLES ARE RELAY MODULE SAFETY RELAY INPUTS TERMINAL NUMBERS.
- Page 8 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES Q7800 FOR DIRECT SPART IGNITION (OIL OR GAS) IGNITION TRANSFORMER (HOT) (L1) MAIN VALVE MASTER LINE VOLTAGE SWITCH ALARM BURNER CONTROLLER/LIMITS INTERMITTENT PILOT/IGNITION MAIN FUEL VALVE(S) IGNITION FLAME DETECTOR 4/10 SAFE- PFEP MFEP INITIATE STANDBY...
- Page 9 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES Mounting RM/EC7890 Relay Module 3. Make sure no subbase wiring is projecting beyond the terminal blocks. Tuck in wiring against the back of the 1. Mount the RM/EC7890 vertically on the Q7800 subbase so it does not interfere with the knife blade Subbase, or mount horizontally with the knife blade terminals or bifurcated contacts.
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Page 10: Principal Technical Features
RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES PRINCIPAL TECHNICAL FEATURES The RM/EC7890 provides all customary flame safeguard are met, the INITIATE sequence restarts. If the condition is not functions as well as significant advancements in safety, corrected and the hold condition exists for four minutes, the annunciation, and system diagnostics. -
Page 11: Settings And Adjustments
RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES SETTINGS AND ADJUSTMENTS SERVICE NOTE Clipping and removing a site-configurable jumper enhances the level of safety. If using three-second amplifier, site-configurable jumper JR2 must be clipped and removed. If Selectable Site-Configurable not removed, an F46 Lockout occurs. - Page 12 RM7890A,B,C/EC7890A,B 7800 SERIES RELAY MODULES Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive ® U.S. Registered Trademark Toronto, Ontario M1V 4Z9 © 2010 Honeywell International Inc. 66-1089—11 M.S.