Honeywell S89E

PRODUCT DATA
68-0066-4
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc.
All Rights Reserved
S89E,F
Direct Spark Ignition Control Module
APPLICATION
The Honeywell S89E,F Direct Spark Ignition Control Modules
control the ignition sequence and gas control operation in
direct spark systems used primarily on gas-fired atmospheric
and power burners in residential furnaces and heating
appliances.
FEATURES
• Requires separate 120 Vac spark generator.
• S89E has 10-second maximum delay for safe start
check before ignition.
• S89F has 38-second maximum delay for safe start
check plus valve on delay before ignition.
• Available with 4 or 11 second (nominal) lockout timing.
• 100 percent shutoff for use with all heating gases.
• Ambient temperature rating is -40°F to +175°F (-40°C to
+80°C).
• Separate electrodes for spark ignition and flame
sensing.
• Uses Honeywell or any other 2A or less dual valve
combination gas control designed for Direct Spark
Ignition (DSI) applications.
• Locks out system after trial for ignition if main burner
fails to ignite.
• Flame rectification principle used to monitor flame;
false flame signals resulting from short to ground
results in safety shutdown.
• After safety shutdown, S89E and F can be reset from
the thermostat.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Wiring ............................................................................... 4
Start-Up and Checkout ..................................................... 4
Operation .......................................................................... 6
Troubleshooting ................................................................ 7

Honeywell S89E Specifications

General

Brand	Honeywell
Model	S89E
Category	Control Unit
Language	English

Summary

APPLICATION

FEATURES

Lists key characteristics and capabilities of the control modules.

SPECIFICATIONS

Models and Ratings

Covers models, electrical ratings, transformer requirements, and temperature range.

Timing and Performance

Details delay timing, lockout timing, flame response, and current signals.

Wiring and Mounting Details

Specifies connection types, sensing lead, and mounting orientation.

INSTALLATION INSTRUCTIONS

Pre-Installation Precautions

Lists essential steps and checks before commencing installation.

Safety Warnings: Fire and Explosion

Critical safety warnings for installation to prevent hazards.

WIRING AND CONNECTIVITY

Electrical Safety and Wiring

Crucial safety warnings for wiring, preventing shock and damage.

Start-Up and Checkout Procedures

Instructions for initial system verification after installation.

Gas Leak Testing

Procedure for testing gas leaks to ensure system safety.

SYSTEM CHECKOUT PROCEDURE

Operational Notes for Gas Controls

Notes on potential lightoff issues after gas control replacement.

RESETTING S89 AFTER SAFETY LOCKOUT

SYSTEM OPERATION OVERVIEW

TROUBLESHOOTING GUIDE

Troubleshooting Safety Precautions

Safety warning related to troubleshooting procedures for hazards.

GROUNDING AND IGNITION CHECKS

Ignition System Grounding

Procedure for checking grounding issues causing nuisance shutdowns.

Spark Ignition Circuit Test

Procedure for testing the spark ignition circuit functionality.

Flame Sensor and Igniter Inspection

Procedure for inspecting the flame sensor and igniter for proper function.

TROUBLESHOOTING FLOWCHART

FLAME CURRENT MEASUREMENT

Burner Flame Condition Analysis

Visual guide to common flame conditions and their causes.

S89 E CONTROL SYSTEM SCHEMATIC

S89 F CONTROL SYSTEM SCHEMATIC