Honeywell Y343B1002 User's Manual
Contents
1. FOR IGNITION IF SPARK 587 GOES INTO LOCKOUT AFTER TIMING PERIOD SYSTEM MUST BE RESET IF FLAME CURRENT NOT SENSED 587 GOES INTO LOCKOUT AFTER TIMING PERIOD SYSTEM MUST BE RESET FIG 8 NORMAL SYSTEM SEQUENCE OF OPERATION IMPORTANT Only persons trained and experienced in DSI systems should service this equipment If a condition exists that causes the 9870 electronic module to go into safety lockout meter readings must be taken quickly after restart within trial for ignition period Always de energize the system for at least 30 seconds before recycling for further tests The 987 electronic module cannot be re paired lf the troubleshooting procedure in dicates a malfunction in the S87 it must be replaced The following service procedures are for the 87 and basic DSI systems On all installa tions refer to the appliance manufacturer s service instructions PRELIMINARY CHECK The following checks should be made before trou bleshooting the system 1 Check for power to the heating appliance and the 87D 2 Check fuse on 9870 electronic module and re place if blown 3 Make certain that the manual shutoff gas cock in the supply line and on the combination gas control valve are open 4 Make certain that all wiring connections are clean and tight 5 Make certain the S87 is not in safety lockout De energize the system by moving the thermostat set point below room temper2. control be sure to conduct Gas Leak Test page 8 Install the auxiliary controls required in the complete control system following the instructions of the ap pliance or control manufacturer TABLE 2 TRANSFORMER RATINGS FOR 87D AND DUAL VALVE COMBINATION GAS CONTROL MINIMUM TOTAL VA VALVE 87D RATING CURRENT CURRENT in amperes 24 V transformer in amperes 1 1 to 1 4 1 5 to 2 0 WIRING GENERAL PRECAUTIONS 1 Check the wiring diagram furnished by the appliance manufacturer if available for circuits differing from the ones shown in this publication Carefully follow ail instructions af fecting the general procedures outlined below 2 All wiring must comply with applicable elec trical codes and ordinances 3 Disconnect the power supply before wiring to prevent electrical shock and equipment damage 4 The flame sensor ieadwire should be kept as short as possible and should not be allowed to rest against grounded metal surfaces 5 A common ground is required for the 87D Electroic Module Q347A Spark lg niter Sensor Q354A Flame Sensor and main burner The S87 ground GND terminal in ternally grounds one side of the transformer Any auxiliary controls or limits used must not be in the grounded leg 6 Ignition cable should not touch any metal sur face or current carrying wires It must not be more than 30 in 762 mm long 7 Do not short valve terminals as thi
3. gap at which spark discontinues 4 A spark length of 1 8 in 3 2 mm or more indicates satisfactory voltage output If no arc can be established or the maximum spark is less than 1 8 in 3 2 mm and power to the 587 input terminals was proved replace the S87 IGNITION CABLE Check the electrical continuity of the ignition cable and make certain the cable is not in contact with metal surfaces The total cable length should not exceed 3 ft 0 9 m A loose connection to the spark igniter sensor may not conduct a signal even though spark ignition is satisfactory Check connections to the stud terminal on the S87D and the boot connection to the spark ig niter sensor and make certain they are clean and tight 68 0014 GROUNDING CONNECTIONS A common ground is required for the burner spark igniter sensor mounting bracket and the GND terminal of the S87 If ground is poor or erratic safety shutdown may occur occasionally even though operation is nor mal at time of checkout Therefore if nuisance shut downs have been reported be sure to check ground connections Electrical ground connections at the spark ig niter sensor and the S87D must be clean and tight If leadwire is damaged or deteriorated use only No 14 or 18 gauge moisture resistant thermoplastic in sulated wire with 105 C 221 minimum rating as replacement FLAME SENSOR CIRCUIT The S87D provides ac power to the flame sensor which the burner flame rect
4. other checks recommended by the heating appliance manufacturer if system components other the the Y343B were serviced TROUBLESHOOTING Start the system by setting the thermostat tem down to the next box If the condition is not true or not perature controller to call for heat Observe the system okay answer is no go to the box at right Continue response and establish the type of malfunction or checking and answering conditions in each box until a deviation from normal operation by using Table 4 problem and or repair is explained After any main Use Table 4 by following the instructions in the tenance or repair the troubleshooting sequence should boxes If the condition is true or okay answer is yes go be repeated until normal system operation is obtained TABLE 4 S87 DIRECT SPARK IGNITION SYSTEM TROUBLESHOOTING DIRECT SPARK IGNITION SYSTEM TROUBLESHOOTING TABLE NOTE BEFORE TROUBLESHOOTING BE SURE START UP ANO CHECKOUT STA RT PROCEDURE HAS BEEN COMPLETED IS POWER ON CHECK LINE VOLTAGE POWER LOW VOLTAGE TRANSFORMER AND MEASURE 24 V AT 587 LOW VOLTAGE WIRING YES TEMPERATURE CONTROLLER CALLS FOR HEAT YES SPARK ACROSS IGNITER OR IGNITER SENSOR GAP YES CHECK IGNITION CABLE GROUND WIRING IGNITER CERAMIC INSULATOR AND GAP AND CORRECT PULL IGNITION LEAD ANO CHECK SPARK AT S87 IGN STUD CHECK FUSE ON 587 REPLACE 87 IF FUSE OKAY CHECK FOR 24 Vac ACROSS VALVE AND VALV
5. 0 Hz transformer c Combination gas control for DSI application d High limit temperature controller and auxiliary safety controls b Low voltage thermostat or temperature controller e Alarm signal if required IF YOU HAVE ADDITIONAL QUESTIONS NEED FURTHER INFORMATION OR WOULD LIKE TO COMMENT ON OUR PRODUCTS OR SERVICES PLEASE WRITE OR PHONE 1 YOUR LOCAL HONEYWELL RESIDENTIAL SALES OFFICE CHECK WHITE PAGES OF YOUR PHONE DIRECTORY 2 RESIDENTIAL DIVISION CUSTOMER SERVICE HONEYWELL INC 1885 DOUGLAS DRIVE NORTH MINNEAPOLIS MINNESOTA 55422 612 542 7500 IN CANADA HONEYWELL LIMITED HONEYWELL LIMITEE 740 ELLESMERE ROAD SCARBOROUGH ONTARIO MiP 2V9 INTERNATIONAL SALES AND SERVICE OFFICES IN ALL PRINCIPAL CITIES OF THE WORLD AMBIENT TEMPERATURE RATING Minus 40 F to plus 175 F minus 40 C to plus 79 C WIRING CONNECTIONS 1 4 in 6 4 mm male quick connect terminals for all except ALARM ter minal ALARM terminal 1 4 in 6 4 mm female quick connect 1 4 in 6 4 mm diameter stud base for ignition cable REPLACEMENT PARTS 3 A fuse Q347A SPARK IGNITER SENSOR The Q347A powered by the 887D Electronic Mod ule produces a spark for direct ignition of the main burner The Q347A consists of an inner electrode insulated rod and an outer electrode rigid formed strap bent at end to extend over tip of inner rod Tip of electrodes extend into path of main burner gas arcing across spark gap ig
6. E TERMINALS ON 587 IF NO VOLTAGE REPLACE 587 9 Q347 MAY BE OUT OF POSITION CHECK ELECTRICAL CONNECTIONS BETWEEN S87 AND GAS CONTROL IF OKAY REPLACE GAS CONTROL MAIN BURNER LIGHTS YES NOTE IF S87 GOES INTO LOCKOUT RESET SYSTEM CHECK CONTINUITY OF SENSOR CABLE AND GROUND WIRE CHECK THAT BURNER FLAME COVERS 354 5 FIG 10 MEASURE FLAME SIGNAL AT S87 FOR 1 5 uA SEE PAGE 10 tF CHECKS ARE OKAY REPLACE S87 MODULE NOTE IF 587 GOES INTO LOCKOUT RESET SYSTEM CHECK CONTINUITY OF SENSOR CABLE AND GROUND WIRE NOTE IF GROUND IS POOR OR ERRATIC SHUTDOWNS MAY OCCUR OCCASIONALLY EVEN THOUGH OPERATION IS NORMAL AT THE TIME OF CHECKOUT CHECK FOR EXCESSIVE HEAT AT SENSOR INSULATOR TEMPERATURE ABOVE 1000 F 538 C CAUSES SHORT TO GROUND iF CHECKS ARE OKAY REPLACE S87 MODULE SPARK STOPS WHEN BURNER 3S LIT YES SYSTEM RUNS UNTIL CALL FOR HEAT ENDS CHECK FOR PROPER TEMPERATURE CONTROLLER OPERATION REMOVE VALVE LEAD AT S87 IF VALVE CLOSES REPLACE S87 IF NOT REPLACE GAS CONTROL CALL FOR HEAT ENDS SYSTEM SHUTS OFF YES TROUBLESHOOTING ENDS REPEAT PROCEDURE UNTIL TROUBLEFREE OPERATION IS OBTAINED 11 3834 HONEYWELL MINNEAPOLIS MN 55408 INTERNATIONAL Sales Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Germany Japan Mexico Spain Taiwan United Kingdom U S A PRINTED IN U S A
7. Honeywell THE Y343B IGNITION PACKAGE PROVIDES DIRECT SPARK IGNITION DSI FOR GAS HEATING SYSTEMS THE PACKAGE IN CLUDES 8870 ELECTRONIC MODULE Q354A FLAME SENSOR Q347A SPARK IG NITER SENSOR AND 392286 1 IGNITION CABLE DEPENDABLE BURNER IGNITION L Spark generated by electronic module and internal step up transformer SOLID STATE DESIGN Compact solid state components provide accurate long lasting performance No mechanical friction or wear MAXIMUM OPERATING SAFETY Proves presence of flame on burner igni tion then protects against burner flame out and interruption of electric power or gas sup ply during run cycle Open or short circuit in any electronic com ponent results in safety shutdown USES FLAME RECTIFICIATION PRINCIPLE Any false flame signal including electrical short or ground results in safety shutdown Ignition is started main burner is ignitiec burner flame is proved and continuously monitored during main burner on period Ig nition spark is discontinued when flame is proved CONVENIENT REMOTE RESTART PROCEDURE After safety shutdown equipment must be manually reset from remote thermostat or temperature controller System automatically locks out after trial for ignition If malfunction exists correc tion must be made before system is manually reset LOW VOLTAGE CONTROL CIRCUIT Permits use of 24 V thermostat for op imum temperature control Reduced wiring costs both
8. R 1 Mate quick connect terminals 1 4 in 6 4 mmf g are provided on both the Q354 and 887D Connect the SENSOR terminal on the 987 to the terminal on the TRANSA RMER Q354 as shown in Fig 4 Use thermoplastic insulated wire with a minimum rating of 105 C 221 for the flame sensor leadwire asbestos insulation is not acceptable 87D CONTROL MODULE AUXILIARY CONTROLS GAS CONTROL 2 0 8 max WARNING Q347 Q354 FLAME SPARK SENSOR IGNITER The auxiliary controls transformer thermostat limit must be connected to the 24 V terminal TEMPERATURE CONTROLLER gas valve must be connected to the VALVE terminals and the alarm control to the ALARM terminal on the S87D Only one side of the transformer secondary can be connected to the 24 V GND terminal A short to ground could cause the system to malfunction IGNITER AND BURNER GROUND POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A ALTERNATE LIMIT CONTROLLER LOCATION A MAXIMUM IGNITER SENSOR CABLE LENGTH 3 ft 0 9 m OR LESS A 3 A REPLACEABLE FUSE Connect the system transformer thermostat high temperature limit controller combination gas valve and FIG 4 WIRING HOOKUP FOR Y343B PACKAGE IN A alarm if used as shown in Fig 4 TYPICAL DSI HEATING SYSTEM HEAT COOL THERMOSTAT AND SUBBASE 587 CONTROL MODULE FOR VALVE AND BURNER HOOKUP COOLING PRESSURE SEE FIG 4 AND 7 CONTROLLER CONTROLLER POWE
9. R SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FAN MOTOR A OPTIONAL LIMIT CONTROLLER LOCATION 11 382 FIG 5 WIRING HOOKUP FOR Y343B PACKAGE IN A TYPICAL HEATING COOLING SYSTEM LIMIT CONTROLLER A 4 VR8540 DUAL VALVE 2 STAGE GAS CONTROL POWER SUPPLY PROVIDE DISCONNECT MEANS ANO OVERLOAD FOR BURNER HOOKUP PROTECTION AS REQUIRED SEE FIG 4 AND 7 A ALTERNATE LIMIT CONTROLLER LOCATION A FACTORY INSTALLED WIRES DO NOT REMOVE A 3 A REPLACEABLE FUSE FIG 6 WIRING HOOKUP FOR Y343B PACKAGE IN A TYPICAL TWO STAGE DSI HEATING SYSTEM ON OFF WITCH Swine LIMIT CONTROLLER THERMOSTAT OR CONTROLLER IGNITER FD soe TERMINAL GROUND PER AND OO FLAME RELAY DETECTOR ACARI ule USED s ANY DUAL VALVE GS CONF ROE POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECT H ROTECTION AS REQUIRED INTERNAL WIRING A ALTERNATE LIMIT CONTROLLER LOCATION EXTERNAL WIRING A 3 A REPLACEABLE FUSE FIG 7 S87D SIMPLIFIED SCHEMATIC DIAGRAM 68 0014 The following start up and checkout procedures are basic to the S87 If possible refer to the specific instructions provided by the appliance manufacturer since the application and controls used may differ NOTE If one of the system components fails the 987 will either not operate or it will go into safety lockout depending on the type of failure If the system does not p
10. ark cutoff It should not exceed the time shown in Table 3 TABLE 3 S87 LOCKOUT TIMES SPECIFIED S87 LOCKOUT TIME stamped on 87 Control Module 11 0 sec SAFETY LOCKOUT TIME SHOULD NOT EXCEED 15 0 sec 4 After spark cutoff manually reopen gas supply cock No gas should flow to the main burner 5 Reset system as described below RESET S87 AFTER SAFETY LOCKOUT If the control goes into safety lockout it will remain locked out until the system is reset To reset the system adjust the thermostat setting below room temperature wait 30 seconds and move the thermostat setting up to call for heat Normal ignition should occur as described in START SYSTEM above CHECKOUT Start system and observe operation through at least one complete cycle to make certain all controls are operating safely OPERATION OPERATION The S87D is powered by a 24 Vac transformer and activated when the temperature controller calls for heat Operation is as follows refer to Fig 8 When the S87 is activated an internal transformer provides power to the electronic generator circuit for Spark ignition and the safety lockout timing begins At the same time the S87 opens the gas control s main valves which allows gas to flow to the main burner Power is supplied to the generator until ethe main burner lights and flame sensor current reaches 1 5 uA or the safety lockout timing period ends If the mai
11. ature Wait at least 30 seconds and re energize the system by moving the thermostat set point 5 F 2 8 C above room temperature 6 Check ceramic insulator on flame sensor and spark igniter A cracked insulator wilt allow current to leak to ground Replace device if insulator is cracked 7 Check the flame sensor and its mounting bracket Correct the position if bent out of shape 8 Review the S87 normal sequence of operation See START SYSTEM section 9870 COMPONENT CHECKS SPARK IGNITION CIRCUIT The step up transformer in the S87 provides spark ignition at 15 000 volts open circuit To check the spark ignition circuit proceed as follows 1 Shut off gas supply to the gas control 2 Disconnect the ignition cable at the S87 stud terminal to isolate the circuit from the spark igniter Prepare a short jumper wire using heavily insulated wire such as ignition cable CAUTION Do not allow fingers to touch either the stripped end of the jumper or the stud terminal This is a very high voltage circuit and electrical shock can result 3 Perform this test immediately upon energizing the system before the S87D goes into safety lockout and interrupts the spark circuit Touch one end of the jumper firmly to the S87 GND terminal DO NOT remove the existing ground lead Slowly move the other end of the jumper wire toward the stud terminal on the S87 to establish a spark Pull the wire away from the stud and note the length of
12. erform as outlined in START SYSTEM and CHECK SAFETY LOCKOUT steps below refer to the SERVICE section to determine the cause START SYSTEM 1 Turn on power and gas supply 2 Perform the following Test for Gas Leaks WARNING DO NOT OMIT THIS TEST With main burner in operation paint pipe joints gas tubing connections and valve gasket lines with rich soap and water solution Bubbles in dicate gas leaks To stop leak tighten joints and or screws or replace gasket Never use a flame to check for gas leaks 3 Set temperature controller to call for heat and watch for spark at the igniter Time the length of the spark operation it must be within the lockout timing period see Table 3 4 Check that the system starts as follows Spark turns on gas valve opens at once and burner ignites after gas reaches the main burner Once burner flame is established spark igniter shuts off NOTE if the gas control has been replaced or serviced lightoff may not be satisfactory until air has been purged from the gas line or the gas input and combustion air have been adjusted see manufac turer s instructions STARTUP AND CHECKOUT CHECK SAFETY LOCKOUT 1 With the system power off and the temperature controller set to call for heat manually shut off the gas supply 2 Turn power on to energize the S87 and begin spark ignition Immediately start timing 3 Determine the number of seconds to safety lockout sp
13. heckout instructions and service procedures for their system If manufacturer s instructions are not available the information below may be used as a general guide 59870 CONTROL MODULE Select a location within 30 in 762 mm maximum of the burner that will permit a direct cable route to the Q347A spark igniter Ready access to the terminals is necessary for wiring and servicing Do not exceed the ambient temperature rating given in the SPECIF ICATION section The S87 may be mounted in any position See Fig 1 for mounting dimensions Use No 6 32 machine screws or No 8 sheetmetal screws 1 in long for fastening Fasten securely Q347A SPARK IGNITER SENSOR The Q347A should be rigidly mounted in an ac cessible location It must remain in a fixed position relative to the main burner The Q347 may be mounted on a separate bracket or on the same bracket with the Q354A Flame Sensor On multiple burners the Q347 may be mounted at one end of the row and the Q354 at the other end to delay spark cutoff until all burners are ignited IMPORTANT The ignition cable limits the distance between the Q347 and 987 to 30 in 762 mm or less This may affect the location selected for the Q347 and or 87 Ignition cable must not touch grounded object or current carrying wires Position the Q347 so that only the tips of the elec trodes are immersed in the burner flame The burner must ignite smoothly usually this will be ac co
14. ifies to direct current if the flame signal back to the S87 is not at least 1 5 yA dc the system will lock out The output of the flame sensing circuit can be checked directly on the S87D Check the flame sensing circuit as follows 1 Connect a meter dc microammeter scale in series with the sensor wire as shown in Fig 9 Use the Honeywell W136A Test Meter or equivalent Disconnect the sensor wire at the S87D Connect the red positive lead of the meter to the free end of the sensor wire Connect the black negative meter lead to the sensor terminal on the S87 2 Restart the system and read the meter The flame sensor current must be at least 1 5 and steady If the reading is less than 1 5 uA or unsteady see LOW OR UNSTEADY FLAME CURRENT section below FLAME SENSOR CURRENT CHECK USE uA SCALE 1 5 uA de MINIMUM AND STEADY MULTIPURPOSE METER FEMALE QUICK CONNECT TERMINAL ON SENSOR WIRE Q347 Q354 FLAME SPARK SENSOR IGNITER BURNER IGNITER AND BURNER GROUND FIG 9 S87 FLAME CURRENT MEASUREMENT LOW OR UNSTEADY FLAME CURRENT If the current to the S87D flame circuit is less than 1 5 uA or is unsteady check the burner flame and flame sensor location and electrical connections as follows Burner Flame The flame sensor must be constantly immersed in flame Check burner flame conditions as shown in Fig 10 If necessary improve the flame condition or relocate the flame sensor to a place on the
15. main burner where flame conditions are better Fiame Sensor The flame signal is best when about 1 in 25 4 mm of flame rod is immersed in the burner flame A bent flame rod or mounting bracket can affect flame signal Bend flame rod bracket to correct position if necessary Excess temperature at the ceramic flame rod insulator may cause leakage to ground decreasing the flame signal Replace the flame sensor if the ceramic insulator is cracked and relocate the sensor to an area of lower ambient temperature if necesary Electrical Connections and Shorts Connections at the flame sensor must be clean and tight If wiring needs replacement use moisture resistant No 18 wire rated for continuous duty up to 105 C 221 CHECK BURNER FLAME CONDITIONS CHECK FOR HIGH GAS PRESSURE EXCESS PRIMARY AIR OR DRAFT BURNER AL ALA WAVING FLAME SMALL BLUE FLAME CHECK FOR POOR DRAFT EXCESS DRAFT 9 VELOCITY OF SECONDARY IR INSTALL SHIELD IF NECESSARY CHECK FOR CLOGGED PORTS OR ORIFICE FILTER WRONG SIZE ORIFICE CHECK FOR LACK OF AIR FROM DIRTY PRIMARY AIR OPENING LARGE PORTS OR ORIFICES P RECTIFYING FLAME 1 4 TO 1 2 INCH 6 4 TO 12 7 mm FIG 10 BURNER FLAME CONDITIONS CHECKOUT AFTER SERVICE Perform the following steps before leaving the job described in CHECKOUT section START SYSTEM e SAFETY LOCKOUT CHECK SAFETY LOCKOUT RESET Also perform any
16. mplished with tip of electrodes spark gap spaced approximately 1 4 in 6 4 mm from the surface of the burner Gas must flow into one of the three open sides of the spark gap where outer electrode does not block gas The center electrode must not be near any ground The spark gap is factory adjusted to 5 32 in 4 mm If this setting is disturbed in shipment or installation readjust by carefully bending the bent tip of the ground outer electrode only Q354A FLAME SENSOR The Q354 should be rigidly mounted in an accessible location It must remain in a fixed position relative to the main burner Mount the Q354 on a separate bracket or on the same bracket with the Q347 Spark Igniter Tip of rod must be immersed in main burner flame Depth of immersion usually about 1 in 25 4 mmj and distance from rod to burner surface usually 1 4 in 6 4 mm depends on type of burner and flame configura tion Position selected must produce sensor current of 1 5 microamperes minimum See Fig 9 Page 10 to measure current The main burner serves as the grounding area for the flame signal Install ground wire from the main burner to the ground terminal of the S87D AUXILIARY CONTROLS CAUTION 1 Ifa common transformer is used to power both the S87D and the burner valve circuit its capacity VA must be adequate for all of the system components see Table 2 Turn off gas supply before beginning installa tion After installing gas
17. n burner lights a circuit is completed through the flame to the burner head to ground This current flow returns the safety lockout timer to the reset normal condition and interrupts the spark ignition circuit Should the current flow be interrupted i e flame out condition the trial for ignition begins again The S87 will keep the gas control main valve open as long as there is a call for heat and current through the flame sensing circuit If however the safety lockout timing period ends before the main burner lights or the flame sensor establishes enough current the system will go into safety lockout When the system goes into safety lockout power to the generator is interrupted the gas control circuit is interrupted and the alarm relay circuit is completed The system will stay locked out until it is reset by moving the thermostat set point below room tem perature no cali for heat for 30 seconds Then re energize the system by moving the thermostat set point 5 F 2 8 C above room temperature TEMPERATURE CONTROLLER CALLS FOR HEAT 2 SPARK GENERATOR POWERED MAIN VALVE OPERATORS OPEN 3 FLAME CURRENT SENSED SPARK GENERATOR IS SHUT OFF LOCKOUT TIMER IS RESET 4 MAIN BURNER OPERATION 587 MONITORS BURNER FLAME CURRENT 5 TEMPERATURE CONTROLLER SATISFIED VALVES CLOSE MAIN BURNERS ARE OFF POWER INTERRUPTION SYSTEM SHUTS OFF RESTARTS WHEN POWER IS RESTORED FLAME FAILURE 587 STARTS TRIAL
18. nites gas SPARK GAP 5 32 in 4 mm LENGTH OF ELECTRODE ASSEMBLY mounting sur face to tip 2 3 8 in 60 3 mm ELECTRODE MATERIAL Kanthal MAXIMUM TEMPERATURE RATINGS 1800 F 982 C at tip of electrode assembly 1250 F 677 C at ceramic insulator WIRING CONNECTION 1 4 in 6 4 mm diameter base stud for ignition cable MOUNTING Bracket see Fig 2 DIMENSIONS See Fig 2 5 13 413 15 138 2 FIG 2 INSTALLAHON DIMENSIONS WN in mm IN BRACKETS OF Q347A Q354A FLAME SENSOR The Q354A consists of a flame rod supported in a ceramic insulator with mounting bracket Positioned so that the end of the flame rod is immersed in the main burner flame and with the burner head serving as the ground area it operates on the flame rectification principle In the presence of main burner flame a direct current is established to prove burner ignition and to continuously monitor the flame during the burner on period MAXIMUM TEMPERATURE RATING 2200 F 1204 at tip of rod 1250 F 677 C at ceramic insulator WIRING CONNECTION 1 4 in 6 4 mm male quick connect terminal FLAME ROD MATERIAL Kanthal MOUNTING Bracket see Fig 3 DIMENSIONS See Fig 3 CLEARANCE HOLE 15 16 24 DIA 3 4 8 16 174 64 MALE n QUICK CONNECT 9 16 14 31 DIA eo E E 30911 3 3 q 95 3 FIG 3 DIMENSIONS IN in mm IN BRACKETS Q354A 392286 1 IGNITION CABLE This cable is used to co
19. nnect the Q347A Spark Igniter Sensor to the 87 Electronic Module CABLE No 16 gauge high tension 485 F 251 C heated oil resistant LENGTH 30 in 762 mm CONNECTORS 2 1 4 in 6 4 mm diameter spring clip type with insulating boot Two straight boots GAS CONTROLS Combination gas controls are directly controlled by the internal relay in the S87D Maximum electrical rating for DSI gas valve control is 2 0 A See individual publication for complete specifications and installation instructions on the following recommended gas controls 68 0014 TABLE 1 GAS CONTROLS CAPACITY RANGE OF TYPE OF PRESSURE STANDARD MODEL PUBLICATION FORM MODEL NO REGULATOR O om O m NUMBER V845A 60 2315 VR8450A 68 0016 V845C Step open 110 to 335 60 2315 VR8450C Step open 110 to 290 3 1 to 7 8 68 0016 VR8540A Two stage 110 to 290 68 0021 VR8590A 68 0017 VR8600A 68 0017 AUXILIARY CONTROLS REQUIRED FOR BASIC DSI SYSTEM 1 TRANSFORMER Select transformer with ade quate 9870 requires a 24 Vac transformer For common system transformers capacity must be ade quate for S87D temperature controller gas control and any other device powered by the transformer see Table 2 2 LOW VOLTAGE TEMPERATURE CONTROLLER Select a 24 Vac thermostat for single stage or two stage burner control depending on heating sys tem DETERMINED BY PARTICULAR APPLICATION Refer to separate publications for information on the cont
20. nt gas valve circuit 4 Senses the presence of main burner flame and discontinues ignition spark If the burner fails to ignite within the trial for ignition period safety lockout oc curs 5 If there is a loss of power the system will shut down safely Start up is initiated when power is restored 6 If there is a loss of main burner flame the timed trial for ignition is repeated Safety shutdown occurs if flame is not reestablished within the trial for ignition period 7 Normally closed contacts in internal relay may be used for an alarm circuit to signal safety shutdown of system ELECTRICAL RATINGS Voltage and Frequency 24 Vac 60 Hz Current Rating 0 2 A plus gas valve current draw SAFETY LOCKOUT TIMING 11 seconds FLAME FAILURE REIGNITION TIME 0 8 seconds maximum FLAME CURRENT SIGNAL REQUIRED 1 5 uA dc minimum SPARK GENERATOR VOLTAGE 15 000 V open circuit MOUNTING Mounts in any position See Fig 1 DIMENSIONS See Fig 1 4 101 6 13 We HOLE 4 7 32 5 6 11 3854 FIG 1 DIMENSIONS FOR 5887 IN in mm BRACKETS continued on page 3 ORDERING INFORMATION WHEN PURCHASING REPLACEMENT AND MODERNIZATION PRODUCTS FROM YOUR TRADELINE WHOLESALER OR YOUR DISTRIBUTOR REFER TO THE TRADELINE CATALOG OR PRICE SHEETS FOR COMPLETE ORDERING NUMBER OR SPECIFY Order number Y343B1002 Safety lockout timing 11 seconds DSI system controls as required a 24 V 6
21. on appliance and on job GAS VALVE CONTROL O 87D internal relay switches the gas valve on and off System can be used with a 2 stage gas valve if desired LARM CONTROL Optional alarm circuit provides 24 Vac for an automatic visual or audible signal if any part of system malfunctions and causes a lockout gt L H Form Number 68 0014 1 83 Honeywell Inc 1983 DIRECT SPARK GAS BURNER IGNITION PACKAGE Honeywell Y343B1002 SPECIFICATIONS The 343B1002 Direct Spark Gas Burner Ignition Package includes the 887D Electronic Module Q347A Spark Igniter Sensor Q354A Flame Sensor and 392286 1 Ignition Cable Assembly Other controls needed to complete the heating sys tem include a 24 V DSI gas valve 24 V thermostat 24 V transformer and high temperature limit controller 5870 CONTROL MODULE The 9870 contains the electronic components of the system and also serves as a central wiring panel for the external controls Powered by a 24 V trans former and controlled by a thermostat it performs the following functions 1 Checks for a false flame condition short to ground Module will tock out if false flame condition is present 2 Generates a potential of 15 000 V open circuit at the spark igniter stud for direct ignition of the main burner 3 Operates gas valve internal relay controls inde pende
22. rols utilized by the appliance manufacturer These controls are 1 High limit temperature controller and other safety controls as required 2 Gas valve Refer to Table 1 above 3 Alarm signal as desired for the circuit under control of the 87D CAUTION When using a common transformer to power both S87D and gas control circuit use a good quality transformer of adequate VA If trans former VA is inadequate the S87D internal relay may chatter When two or more transformers are used they must be properly phased and grounded INSTALLATION WHEN INSTALLING THIS IGNITION PACKAGE 1 Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure it is suitable for your application 3 The installer must be a trained experienced service technician 4 After installation is complete check out system operation CAUTION Disconnect power supply before wiring to pre vent electrical shock or equipment damage If a new gas control is to be installed turn off gas supply before starting installation Be sure to conduct a Gas Leak Test after the gas control is installed follow manufacturer s instructions IMPORTANT lf this is a replacement application follow the appliance manufacturer s instructions The manu facturer usually provides wiring diagrams start up and c
23. s may burn out the temperature controller or the transformer 87D CONTROL MODULE 1 Connect the system components to the 87D quick connect terminals as shown in the wiring dia grams Refer to the appliance manufacturer s instruc tions for wiring any other auxiliary controls 2 Adjust thermostat heat anticipator to match system current draw The current draw equals the total current required for the S87D 0 2 A plus the gas valve Gas valve must be designed for DSI application Q347A SPARK IGNITER AND IGNITION CABLE 1 Connect the GND burner quick connect terminal on the S87D to one of the mounting screws on the Q347A as shown in Fig 4 The S87 and Q347 must have a common ground Use thermoplastic insulated wire with a minimum rating of 105 C 221 F for the ground wire asbestos insulation is not acceptable If neces sary use a shield to protect the wire from radiant heat generated by the burner 2 Connect one end of the ignition cable supplied with the Y343B package to the ignition terminal on the 587 and the other end to the Q347 NOTE Ignition cable must not run in contact with a metal surface or current carrying wires Use ceramic or plastic standoff insulators to protect voltage to spark electrode from being reduced If cable passes through a metal panel use an insulated bushing in the panel to prevent voltage reduction to spark electrode 68 0014 Q354A FLAME SENSOR LIMIT CONTROLLE
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