Honeywell S8600 - User Manual

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APPLICATION
These ignition modules provide ignition sequence, flame
monitoring and safety shutoff for intermittent pilot central
furnaces and heating appliances. S8600 and S8660 mod-
els provide up to 1.0 A pilot and 1.0 A main valve current
rating. S8610 and S8670 provide up to 1.0 A pilot and 2.0
A main valve current rating. Minimum ambient temperature
rating is -40  F [-40  C]. Maximum ambient rating is +175 
F [+79  C] for S8600, S8660 and for S8610, S8670 used
with 1.0 A or less main valve. Maximum ambient rating for
S8610, S8670 used with 1.0 to 2.0 A main valve is +165  F
[+74  C]. See Table I for a summary of other differences
between models.
TABLE 1—INTERMITTENT PILOT IGNITION MODULES.
a
If established flame is lost, all models restart ignition trial.
PLANNING THE INSTALLATION
Intermittent pilot systems are used on a wide variety of
central heating equipment and on heating appliances such
as commercial cookers, agricultural equipment, industrial
heating equipment and pool heaters. Some of these appli-
cations may make heavy demands on the controls, either
because of frequent cycling, or because of moisture, corro-
sive chemicals, dust or excessive heat in the environment.
In these situations, special steps may be required to pre-
vent nuisance shutdowns and premature control failure.
These applications require Honeywell Residential Division
Engineering review; contact your Honeywell Sales Repre-
sentative for assistance.
FREQUENT CYCLING
These controls are designed for use on space heating
appliances that typically cycle 3 to 4 times an hour during
the heating season and not at all during the cooling season.
In an application with significantly greater cycling rates and
closer to year-round use, we recommend monthly checkout
because the controls may wear out more quickly.
WATER OR STEAM CLEANING
Once a module or gas control has been wet, it may
operate unreliably and must be replaced. If the appliance is
likely to be cleaned with water or steam, the controls and
associated wiring should be covered so water or steam flow
cannot reach them. The controls should be high enough
above the bottom of the cabinet so they will not be subject
to flooding or splashing during normal cleaning procedures.
If necessary, shield the controls to protect them from
splashing water. A NEMA 4 enclosure is recommended for
the ignition module; see the Electronic Ignition Service
Manual, form 70-6604.
HIGH HUMIDITY OR DRIPPING WATER
Over time, dripping water or high ambient humidity can
create unwanted electrical paths on the module circuit
board, causing the module to fail. Never install an appliance
where water can drip on the controls.
In addition, high ambient humidity can cause the gas
control to corrode, and finally to fail.
Where the appliance may be installed in a humid atmos-
phere, make sure air circulation around the module and gas
control is adequate to prevent condensation. It’s also im-
portant to regularly check out the system. A NEMA 4
enclosure may be needed; see the Electronic Ignition
Service Manual, form 70-6604.
INTERMITTENT PILOT MODULES
S8600, S8610, S8660, S8670
MODEL
IGNITER-
SENSOR
TYPE
TYPE
OF GAS
PREPURGE
TIMING
100
PERCENT
SHUTOFF
LOCKOUT
TIMING
IGNITION
SEQUENCE
a
S8600A,
S8610A
Separate
Natural
None
No
No
Spark on until pilot
lightoff or manual
shutoff; pilot valve
open until manual
shutdown.
S8600F,
S8610F
Combination
S8600B,
S8610B
Separate
Natural
or LP
None
Yes, at
lockout
15 or 90
sec. max.,
as ordered
Spark on until
lightoff or lockout;
pilot valve closes
on lockout.
S8600H,
S8610H
Combination
S8600M
Combination
Natural
or LP
None
Yes, at 90
sec. max.
No,
continuous
retry
Spark and pilot gas
on until shutoff.
After 5 min. min.
(6 min. nom.) delay,
ignition starts again.
Ignition, wait, retry
repeats until pilot
lights or system is
shut down manually.
S8660D,
S8670D
Combination
Natural
or LP
45 sec.
Yes, at
lockout
15 or 90
sec. max.,
as ordered
Ignition trial follows
prepurge; spark on
until lightoff or
lockout; pilot valve
closes on lockout.

Summary

APPLICATION AND MODULES

INSTALLATION PLANNING & ENVIRONMENT

Guidance for installation, cycling, and environmental factors.

INTERMITTENT PILOT MODULES OVERVIEW

Introduction to the range of intermittent pilot modules.

INSTALLATION HAZARDS AND PREPARATION

ENVIRONMENTAL RISKS (CHEMICALS, DUST, HEAT, MOISTURE)

Effects of environmental factors on control components.

PREINSTALLATION SAFETY AND MAINTENANCE

Essential safety checks and maintenance in severe environments.

MODULE MOUNTING AND GENERAL SAFETY

Guidelines for mounting and general safety warnings/cautions.

SYSTEM CONTROL MOUNTING AND WIRING

WIRING SAFETY, NOTES, AND CONNECTIONS

Safety, notes, and steps for connecting system components.

GROUNDING AND MODULE REPLACEMENT

GROUND CONTROL SYSTEM

Proper grounding procedures for the ignition system.

MODULE REPLACEMENT PROCEDURE

Procedure for replacing modules with specific terminal types.

CHECKOUT AND VERIFICATION

GAS LEAK TEST AND MODULE RESET

Procedures for gas leak testing and module reset.

OPERATION AND SAFETY SHUTOFF CHECKS

Verifying normal operation and safety shutoff functions.

CRITICAL WARNINGS

OPERATION OVERVIEW

PREPURGE FUNCTION

IGNITION SEQUENCE DETAILS

PILOT IGNITION AND SAFETY LOCKOUT

Sequence for pilot ignition and safety lockout operation.

MAIN BURNER OPERATION AND RETRY

Main burner operation and continuous retry sequence.

TROUBLESHOOTING FUNDAMENTALS

IMPORTANT NOTES AND SYSTEM CHECKS

Key points and ignition system checks for troubleshooting.

HIGH VOLTAGE ELECTRICAL WARNING

Warning about electrical shock from the ignition circuit.

TROUBLESHOOTING FLOWCHARTS

INITIAL TESTS AND CHECKS

Visual inspection, gas leak test, igniter spark check.

BURNER AND SYSTEM OPERATION VERIFICATION

Verifying pilot, main burner, and system cycle completion.

ANSI STANDARDS AND SAFETY INSPECTION

EXHIBIT A: APPLIANCE SAFETY INSPECTION

Recommended safety inspection for appliance installations.

EXHIBIT B: INSTALLATION PROCEDURE

Honeywell S8600 Specifications

General

Brand	Honeywell
Model	S8600
Category	Control Unit
Language	English