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Honeywell S8701 Installation Instructions Manual

Direct spark ignition controls
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APPLICATION
S8701 and S8702 Direct Spark Ignition Controls are
designed for use in commercial cooking and other gas
heating applications which require direct ignition and flame
safety control of gas burners. S8701/S8702 controls are
used to ignite the main burner(s), sense the flame and
control the gas valve in these applications, see Table 1.
Model
S8701D
S8702D
S8702F
S8702K
S8702M
a
S8702 F and M models include an auto-reset from lockout after 1 hour.
Planning the Installation
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.
Follow these warnings exactly:
1.
Plan the installation as outlined below.
2.
Plan for frequent maintenance as described in
the Maintenance section.
Review the following conditions that can apply to your
specific installation and take the precautionary steps
suggested.
Frequent Cycling
This control is designed for use on commercial cooking
appliances that typically cycle 400 times a day, year round.
Perform a monthly checkout.
Water or Steam Cleaning
If a control gets wet, replace it. If the appliance is likely to
be cleaned with water or steam, protect (cover) the control
and wiring from water or steam flow. Mount the control
high enough above the floor so it does not get wet during
normal cleaning procedures.
®U.S. Registered Trademark
Copyright © 1999 Honeywell Inc. • All Rights Reserved
S8701/S8702 Direct Spark
Table 1. S8701/S8702 Models.
Flame Sense
Trials for Ignition
remote
remote
remote
remote
remote

Ignition Controls

INSTALLATION INSTRUCTIONS
The S8701 is a single spark, single flame sense, direct
ignition control that is compatible with dual rod systems.
The S8702 is a dual spark, dual flame sense, direct
ignition control capable of igniting and sensing flame on
two separate gas burners that are fed by a single gas
valve. The S8702 is compatible with dual rod systems
only.
Spark/Sense
1
1
1
2
a
3
2
1
2
a
3
2
High Humidity or Dripping Water
Dripping water can cause the control to fail. Never install
an appliance where water can drip on the control. In
addition, high ambient humidity can cause the control to
corrode and fail. If the appliance is in a humid atmosphere,
make sure air circulation around the control is adequate to
prevent condensation. Also, regularly check out the
system.
IMPORTANT
Always install a splash cover to protect the
control from water damage.
Corrosive Chemicals
Corrosive chemicals can attack the control, eventually
causing a failure. If chemicals are used for routine
cleaning, avoid contact with the control. Where chemicals
are suspended in air, as in some industrial or agricultural
applications, protect the control with an enclosure.
Dust or Grease Accumulation
Heavy accumulations of dust or grease can cause the
control to malfunction. Where dust or grease can be a
problem, provide covers for the control to limit contamina-
tion.
Prepurge
No
No
No
Yes
Yes
69-1174

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  Summary of Contents for Honeywell S8701

  • Page 1: Ignition Controls

    Copyright © 1999 Honeywell Inc. • All Rights Reserved S8701/S8702 Direct Spark Ignition Controls The S8701 is a single spark, single flame sense, direct ignition control that is compatible with dual rod systems. The S8702 is a dual spark, dual flame sense, direct...
  • Page 2: Installation

    Mount the spark igniter, flame sensor, temperature control, transformer, gas control and any other auxiliary controls according to the manufacturer’s instructions. NOTE: The S8701 and S8702 installations require a 24V If this is a replacement application, follow the appliance manufacturer’s instructions, if avail- able.
  • Page 3: General Precautions

    5. A common ground is required for the S8701/S8702, the spark igniter and the main burner. The 24V (GND) terminal does not internally ground the transformer.
  • Page 4: Startup And Checkout

    NOTE: If one of the system components fail, the S8701/ IGNITER AND BURNER GROUND Gas Leak Test If the gas control has been replaced as a part of the S8701 or S8702 installation, perform the following test for gas leaks. M16267A WARNING Fire or Explosion Hazard.
  • Page 5: Sequence Of Operation

    S8702). • Shuts off spark after burner is lit. 5.05 sec 7.25 sec The S8701 and S8702 are powered by a 24 Vac trans- former and activated when the temperature control 12.75 sec requests heat. 23.75 sec Operation is as follows: When the S8701/S8702 control is activated by the temperature control’s request for heat, S8701/S8702...
  • Page 6 MAIN BURNER(S) ARE OFF. NOTES: B, D, J, AND K MODELS GO THROUGH ONE (1) TRIAL FOR IGNITION PERIOD BEFORE LOCKOUT. Fig. 4. S8701/S8702 Sequence of Operation for 1 Trial Models (B, D, J, and K Models). 69-1174 PREPURGE - J & K MODELS ONLY DURING NORMAL OPERATION LED BLINKS ONCE PER SECOND.
  • Page 7: Preliminary Check

    PERIOD BETWEEN TRIAL FOR IGNITION PERIODS BEFORE LOCKOUT AND THEN RETRY AUTOMATICALLY AFTER ONE (1) HOUR. LOCKOUT = VALVE CLOSED PLUS SPARK OFF PLUS ALARM ACTIVATED PLUS LED ON STEADY PLUS Fig. 5. S8701/S8702 Sequence of Operation for Retry Models (E, F, L and M Models). SERVICE IMPORTANT 1.
  • Page 8: Grounding Connections

    1. Shut off gas supply to the gas control. 2. Disconnect the ignition cable at the S8701 or both S8702 spark terminals to isolate the circuit from the spark igniter or igniter sensor. Prepare a short jumper lead, using heavily insulated wire such as ignition cable.
  • Page 9: Troubleshooting Guide

    Low or Unsteady Flame Current If the current to the S8701/S8702 is less than 1.0 A or is unsteady, check the burner flame, flame sensor location and electrical connections as follows: Burner Flame The flame sensor must be constantly immersed in flame.
  • Page 10 S8702 MODELS SPARK AND SENSE FLAME ON TWO SEPARATE BURNERS. FLAME MUST BE SENSED ON BOTH BURNERS DURING TRIAL FOR IGNITION ON THE UNIT WILL LOCKOUT. Fig. 9. S8701/S8702 Direct Spark Ignition System Troubleshooting Guide 69-1174 WITH THE START-UP AND CHECKOUT PROCEDURE.
  • Page 11 S8701/S8702 DIRECT SPARK IGNITION CONTROLS 69-1174...
  • Page 12 Home and Building Control Honeywell Inc. Honeywell Plaza P.O. Box 524 Minneapolis, MN 55408-0524 69-1174 L.C. 4-99 Printed in Mexico Home and Building Control Honeywell Limited-Honeywell Limitée 155 Gordon Baker Road North York, Ontario M2H 3N7 www.honeywell.com...

This manual is also suitable for:

S8702