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INTERMITTENT PILOT MODULES
S8600, S8610, S8660, S8670
APPLICATION
These ignition modules provide ignition sequence, flame rating is -40° F [-40° C]. Maximum ambient rating is +175°
monitoring and safety shutoff for intermittent pilot central F [+79° C] for S8600, S8660 and for S8610, S8670 used
furnaces and heating appliances. S8600 and S8660 mod- with 1.0 A or less main valve. Maximum ambient rating for
els provide up to 1.0 A pilot and 1.0 A main valve current S8610, S8670 used with 1.0 to 2.0
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CORROSIVE CHEMICALS that will limit environmental contamination. A NEMA 4 Corrosive chemicals can also attack the module and gas enclosure is recommended for the ignition module; see the control and eventually cause a failure. Where chemicals Electronic Ignition Service Manual, form 70-6604. may be used routinely for cleaning, make sure the cleaning solution cannot reach the controls. Where chemicals are HEAT likely to be suspended in air, as in some industrial and The controls can be damaged by
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We recommend mounting the module with the terminals Cable must be no longer than 36 in. [0.9 m]. To construct down to protect them from dripping water and dust. It can a cable, fit one end of ignition cable with 1/4 in. diameter also be mounted with the terminals on either side. DO NOT Rajah connector receptacle and the other with a 1/4 in. MOUNT with terminals pointing up. Fasten securely with female quick connect. Protect both ends with insulated four No. 6-32 machine or No. 8 sheetmetal screw
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and the 24V terminal on the module. To change out a Ground Control System module with TH-R, TH-W terminals: The igniter, flame sensor and ignition module must 1. Remove the wires from the 25V(2) and TH-R termi- share a common ground with the main burner. Use thermo- nals on the old module. Connect these two wires with a plastic insulated wire with a minimum rating of 105° C [221° solderless connector. F] for the ground wire; asbestos insulation is not accept- 2.Tag and remove the remaining wires
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S8600F,H,M; S8610F,H VENT 5 DAMPER GND 24V PLUG (BURNER) GND MV MV/PV PV 24V TH-W SPARK 197516A 3 WIRING MAIN HARNESS VALVE PILOT COM 1ST 2ND OPERATOR OPERATOR THERMO- 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS STAT AND OVERLOAD PROTECTION AS REQUIRED. DUAL VALVE COMBINATION D80D VENT 2 ALTERNATE LIMIT CONTROLLER LOCATION. GAS CONTROL 2 DAMPER 3 MAXIMUM CABLE LENGTH 3 FEET [0.9 METERS]. LIMIT CONTROLLER 4 4 CONTROLS IN 24V CIRCUIT MUST NOT BE IN L1 GROUND LEG TO TRANSFORMER. (HOT) 1 L2 5 REMOV
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S8600A,B; S8610A,B VENT GND 24V DAMPER PLUG (BURNER) GND 5 MV MV/PV PV 24V TH-W SENSE SPARK 3 MAIN PILOT COM 197516A VALVE WIRING 1ST 2ND HARNESS OPERATOR OPERATOR THERMOSTAT DUAL VALVE COMBINATION 2 GAS CONTROL 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS SENSOR D80D VENT DAMPER AND OVERLOAD PROTECTION AS REQUIRED. 1 2 ALTERNATE LIMIT CONTROLLER LOCATION. L2 4 3 MAXIMUM CABLE LENGTH 3 FEET [0.9 METERS]. L1 (HOT) 4 CONTROLS IN 24V CIRCUIT MUST NOT BE IN LIMIT GROUND IGNITER GROUND LEG TO TRANSFOR
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S8600F,H,M; S8610F,H; S8660D; S8670D VENT 5 GND 24V TH-W DAMPER (BURNER) GND (OPT) PLUG (OPT) MV MV/PV PV 24V SPARK 3 5 AIR MAIN VALVE PROVING STAGE 2 MAIN SWITCH VALVE THERMOSTAT STAGE 1 GROUND PILOT COM RW2 W1 1ST 2ND OPERATOR OPERATOR Q345, Q346, 2 Q348, Q362, TWO STAGE DUAL VALVE Q381PILOT COMBINATION GAS CONTROL COMBUSTION PILOT BURNER/ BURNER AIR BLOWER IGNITER- GROUND RELAY SENSOR PILOT GAS SUPPLY 4 LIMIT CONTROLLER COMBUSTION L1 L2 AIR BLOWER 1 (HOT) 1 MOTOR L1 L2 M1178C (HOT) POWE
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S8600F,H,M; S8610F,H; S8660D; S8670D VENT 5 DAMPER GND 24V TH-W PLUG (OPT) (BURNER) GND (OPT) MV MV/PV PV 24V SPARK 3 5 D80B MAIN VALVE PILOT COM END SWITCH N.O. N.C. 1ST 2ND OPERATOR OPERATOR 1K2 DUAL VALVE COMBINATION 1K1 GAS CONTROL R 1K3 1K Q345, Q346, Q348, Q362, Q381 PILOT BURNER/ 1 2 345 PILOT IGNITER-SENSOR BURNER GROUND 6 PILOT GAS SUPPLY 4 TRANSFORMER THERMOSTAT OR L2 CONTROLLER L1 LIMIT (HOT) LIMIT 2 CONTROLLER CONTROLLER 1 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROT
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S8600F,H,M; S8610F,H; S8660D; S8670D VENT 5 GND 24V TH-W DAMPER MV MV/PV PV (BURNER) GND 24V (OPT) PLUG (OPT) SPARK 3 5 MAIN PILOT COM VALVE 1ST 2ND OPERATOR OPERATOR DUAL VALVE COMBINATION GAS CONTROL Q345, Q346, L1 L2 Q348, Q362, L2 L1 PILOT THERMOSTAT (HOT) 1 (HOT) Q381PILOT BURNER BURNER/ GROUND 1 R G IGNITER- COMBUSTION PILOT GAS SENSOR W Y AIR BLOWER SUPPLY R8239 MOTOR FAN LIMIT CENTER CON- TROLLER COMBUSTION R C AIR BLOWER 4 RELAY W G Y COIL 2 AIR PROVING 1 POWER SUPPLY. PROVIDE DISC
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S8600F,H,M; S8610F,H; S8660D; S8670D VENT 4 GND 24V TH-W DAMPER MV MV/PV PV (BURNER) GND 24V (OPT) PLUG (OPT) SPARK 3 4 PILOT COM MAIN VALVE 1ST 2ND OPERATOR OPERATOR D80D DUAL VALVE COMBINATION 1K GAS CONTROL 1K1 Q345, Q346, D80 MOTOR PILOT Q348, Q362, BURNER Q381PILOT GROUND BURNER/ N.C. 1K2 IGNITER- PILOT GAS C. N.O. SENSOR SUPPLY 1K3 4 3 2 1 CABLE 2 BLUE YELLOW BLACK ORANGE L8148J G L1 L1 (HOT) 1 TP BR 1K1 5 1K Z W T 1K3 AUTO MANUAL 1K2 TV SWITCH FAN MOTOR C1 B3 B2 B1 C2 L2 L2 M1181C THER
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S8610 U VENT 4 GND 24V TH-W DAMPER (OPT) PLUG M MV/P PV (BURNER) GND 24 SPARK SENSE V V V 5 6 3 MAIN L8100 VALVE PILOT COM 2 1ST 2ND ECO OPERATOR OPERATOR CONTROLLER DUAL VALVE COMBINATION GAS CONTROL 4 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS 1 REQUIRED. L2 2 L1 ALTERNATE LIMIT CONTROLLER LOCATION. (HOT) MAXIMUM CABLE LENGTH 3 ft [0.9 m]. 3 4 CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND GROUND LEG TO TRANSFORMER. PILOT GAS 5 DO NOT REMOVE VENT DAMPER PLUG. SUPPLY
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call for heat. ❏ If gas line has been disturbed, complete gas leak test. ❏ Make sure pilot lights smoothly when gas reaches the GAS LEAK TEST: Paint gas control gasket edges and all pilot burner. pipe connections downstream of gas control, including pilot ❏ Make sure main burner lights smoothly without flash- tubing connections, with rich soap and water solution. back. Bubbles indicate gas leaks. Tighten joints and screws or ❏ Make sure burner operates smoothly without floating, replace componen
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TRIAL FOR IGNITION perature for one minute or by turning off power to the Pilot Ignition module for one minute. Following prepurge timing (S8660, S8670), or on the call for heat (S8600, S8610), the module energizes the first Safety Shutoff with Continuous Retry (S8600M) main valve operator. The first main valve opens, which The S8600M provides 100 percent gas shutoff, followed allows gas to flow to the pilot burner. At the same time, the by retry for ignition. Operation on ignition failure is th
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TROUBLESHOOTING IMPORTANT 1. The following service procedures are provided as a general guide. Follow appliance manufacturer’s WARNING service instructions if available. When performing the following steps, do not touch 2. On lockout and retry models, meter readings stripped end of jumper or SPARK terminal. The between gas control and ignition module must be ignition circuit generates over 10,000 volts and taken within the trial for ignition period. Once the electrical shock can result. ignition
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• Make sure electrical connections are clean and tight. adjustment screw on the gas control Replace damaged wire with moisture-resistant No. clockwise to decrease or 18 wire rated for continuous duty up to 105° C [221° counterclockwise to increase pilot flame. Fol- F]. lowing adjustment, always replace pilot adjustment • Check for cracked ceramic insulator, which can cause cover screw and tighten firmly to assure proper gas short to ground, and replace igniter-sensor if neces- control operation.
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NOTE: Before troubleshooting, familiarize yourself with the startup and checkout procedure. START TURN GAS SUPPLY OFF. TURN THERMOSTAT TO CALL FOR HEAT Check line voltage power, low voltage transformer, limit controller, thermostat and wiring. Also, check air proving switch on combustion air blower system and that vent damper (if used) is open and end switch is NO POWER TO MODULE made. (24V NOMINAL) YES 45 SECOND Replace S8670. NO DELAY YES SPARK ACROSS NO Pull ignition lead and check Repla
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L1 (HOT) L2 LIMIT ON-OFF 1 CONTROLLER SWITCH THERMOSTAT OR CONTROLLER 24V 2 TRANSFORMER 24V 24V (GND) ARC GAP 2K1 SPARK DRIVE CIRCUIT GND FLAME (BUR- DETECTOR SPARK NER) CIRCUIT IGNITER SENSOR HYBRID CIRCUIT 1K BURNER LOW GROUND 2K RELAY TIMING VOLTAGE DRIVERS CIRCUITS POWER 3K SUPPLY 3 MAIN 1K1 3K2 1K2 VALVE MV/ MV PV PILOT VALVE 2K2 3K1 PV 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. ALTERNATE LIMIT CONTROLLER LOCATION. 2 3K RELAY ON 100 PERCENT SHUTOFF MODEL
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L1 L2 (HOT) LIMIT ON-OFF 1 CONTROLLER SWITCH THERMOSTAT OR CONTROLLER 24V 2 TRANSFORMER 24V 24V (GND) ARC GAP 2K1 SPARK DRIVE SENSOR CIRCUIT SENSE FLAME GND DETECTOR (BUR- SPARK CIRCUIT NER) IGNITER HYBRID CIRCUIT 1K LOW RELAY TIMING BURNER 2K VOLTAGE GROUND DRIVERS CIRCUITS POWER 3K SUPPLY 3 MAIN VALVE 1K1 3K2 1K2 MV/ MV PV PILOT VALVE 2K2 3K1 PV POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD 1 PROTECTION AS REQUIRED. ALTERNATE LIMIT CONTROLLER LOCATION. 2 3K RELAY ON 100 PERCENT SHUTOFF
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ANSI STANDARDS EXHIBIT A RECOMMENDED PROCEDURE FOR SAFETY INSPECTION OF AN EXISTING APPLIANCE INSTALLATION AS A PRELIMINARY STEP TO APPLYING AN AUTOMATIC INTERMITTENT PILOT SYSTEM operate at maximum speed. Do not operate a summer The following procedure is intended as a guide to aid exhaust fan. Close fireplace dampers. If, after complet- in determining that an appliance is properly installed and ing steps 7 through 12, it is believed sufficient combus- is in a safe condition for continuing use.
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EXHIBIT B PROCEDURE FOR INSTALLING AUTOMATIC INTERMITTENT PILOT SYSTEMS Prior to beginning this procedure, a preliminary ex- 7. Make certain wiring connections are tight and amination of the appliance and the automatic intermit- wires are positioned and secured so they will not be able tent pilot system should be made to determine that the to contact high temperature locations. automatic intermittent pilot system can be properly applied to the appliance. 8. Conduct a Gas Leakage Test of the appl
