Honeywell rm7890a - User Manual

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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Honeywell rm7890a Specifications

General

Model	RM7890A
Output Type	Relay
Control Type	On/Off
Frequency	50/60 Hz
Number of Outputs	1
Housing Material	Plastic
Type	Controller
Application	Industrial Control
Voltage	24 VAC
Temperature Range	-40 to +140 ℉ (-40 to +60 ℃)
Operating Temperature	-40°C to 70°C

Summary

Installation Instructions

General Installation Precautions

Covers crucial warnings, handling instructions, and installer qualifications.

Mounting Wiring Subbase

Wiring Procedures and Guidelines

Subbase and Remote Wiring

Final Wiring and Static Checkout

Final Wiring Check

Static Checkout Procedure

Detailed steps to verify subbase wiring and external component operation.

General Instructions for Checkout

Static Checkout Tests and Cautions

Static Checkout Table

Step-by-step guide for performing static checkout tests and abnormal condition checks.

Equipment Damage Cautions

Mounting the RM;EC7890 Relay Module

Module Mounting Guidelines

Principal Technical Features

Safety Shutdown (Lockout) Conditions

Lists various conditions that trigger a safety shutdown or lockout.

Sequence of Operation

Describes the operational sequences like Initiate, Standby, Ignition Trials, and Run.

Settings and Adjustments

Selectable Site-Configurable Jumpers

Explains the use and configuration of site-configurable jumpers for specific functions.