Honeywell S8700 Series Installation Instructions Manual

APPLICATION
S8700 Direct Spark Ignition Controls are designed for
use in a wide range of gas-fired appliance applications
that require direct main burner ignition and flame safety
control of gas burners. The S8700 is used to ignite the
main burner, sense the flame and control the gas valve.
See Table 1 for the model that best meets your
application needs.
The S8700B,E,J,L models provide single rod flame
sensing (i.e., the spark rod also acts as the flame sense
rod). The S8700D,F,K,M models provide dual rod flame
sensing (i.e., the spark rod and flame rod are separate).
The S8700J,K,L,M models provide 30-second minimum
time delay between application of 24V power to the
control and initiation of the trial for ignition period for
applications that require prepurge. All models have an
LED status indicator.
Table 1. S8700 Models.
Flame
Model Sense
S8700B 1-rod local
S8700D 2-rod remote 1
S8700E 1-rod local
S8700F 2-rod remote 3
S8700J 1-rod local
S8700K 2-rod remote 1
S8700L 1-rod local
S8700M 2-rod remote 3

SPECIFICATIONS

Electrical
Input Voltage: 24 Vac (20.5 Vac minimum to 28.5 Vac
maximum) at 60 Hz.
Current Draw: 0.15A maximum in run mode at 24 Vac.
Thermostat Anticipator Setting: 0.15A plus actual valve load.
Valve Output: 2.0A maximum run; 6.0A maximum
inrush at 24 Vac.
Alarm Output: 0.5A maximum resistive load (Output is
positive phase, one-half wave rectified, 24 Vac).
Spark Output: 14 KV minimum into 25 picofarad
capacitive load.
® U.S. Registered Trademark
Copyright © 2000 Honeywell Inc. • All Rights Reserved
S8700B,D-F,J-M Direct Spark
Trials for Prepurge
Ignition (seconds)
1 0
0
3 0
0
1 30 minimum
30 minimum
3 30 minimum
30 minimum
Ignition Controls
INSTALLATION INSTRUCTIONS
Environmental
Ambient Operating Temperature: -40°F to +175°F
(-40°C to +79°C).
Relative Humidity: 5% to 95% at 95°F (35°C),
noncondensing.
Ignition Sequence/Flame Sense
Prepurge: See Table 1.
Ignition Trials to Lockout: See Table 1.
Trial for Ignition Times: 4.6, 6.6, 11.1 or 21.1 second
nominal available.
Between Trial Purge: 30 second minimum
(S8700E,F,L,M only).
Auto Reset from Lockout: 60 minutes minimum
(S8700E,F,L,M only).
Flame Failure Re-ignition Time: 0.8 second maximum
at 1 microamp flame current.
Flame Current:
Minimum Threshold: 1 microamp.
Appliance Application: 2.5 microamp minimum recom-
mended under all appliance operating conditions.
Approvals:
CSA International Design Certified to ANSI Z21.20,
Report Number C2030026.
PLANNING THE INSTALLATION
WARNING
Fire or Explosion Hazard.
Gas leaks can cause property damage,
severe injury or death.
Follow these warnings exactly:
Plan the installation using the following outline.
Plan for frequent maintenance as described in
the Maintenance section.
Review the following conditions that apply to your
specific installation and take the precautionary steps
suggested.
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