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PRODUCT DATA

68-0066-05

S89E,F
Direct Spark Ignition Control Module

APPLICATION

The S89E,F Direct Spark Ignition Control Modules control the
ignition sequence and gas control operation in direct spark
systems used primarily on gas-fired atmospheric and power
burners in residential furnaces and heating appliances.

FEATURES

• Requires separate 120 Vac spark generator.

• S89E has 10-second maximum delay for safe start check

before ignition.

• S89F has 38-second maximum delay for safe start check

plus valve on delay before ignition.

• Available with 4 or 11 second (nominal) lockout timing.

• 100 percent shutoff for use with all heating gases.

• Ambient temperature rating is -40°F to +175°F (-40°C to

+80°C).

• Separate electrodes for spark ignition and flame sensing.

• Uses Resideo or any other 2A or less dual valve

combination gas control designed for Direct Spark Ignition
(DSI) applications.

• Locks out system after trial for ignition if main burner fails

to ignite.

• Flame rectification principle used to monitor flame; false

flame signals resulting from short to ground results in
safety shutdown.

• After safety shutdown, S89E and F can be reset from the

thermostat.

Contents

Application ..........................................................................

Features ..............................................................................

Specifications .....................................................................

Installation ..........................................................................

Wiring ..................................................................................

Start-Up and Checkout ......................................................

Operation ............................................................................

Troubleshooting .................................................................

Содержание S89E

Страница 1: ...e with 4 or 11 second nominal lockout timing 100 percent shutoff for use with all heating gases Ambient temperature rating is 40 F to 175 F 40 C to 80 C Separate electrodes for spark ignition and flame sensing Uses Resideo or any other 2A or less dual valve combination gas control designed for Direct Spark Ignition DSI applications Locks out system after trial for ignition if main burner fails to ...

Страница 2: ...input 2 2A maximum Valve Contacts 2 0A maximum run 20A maximum inrush at 24 Vac Spark Generator Relay Contacts 1 5A at 120 Vac 50 60 Hz Transformer Rating See Table 1 Thermostat Heat Anticipator Setting 0 2A plus gas control current Delay Timing S89E Safe Start Check 10 seconds maximum S89F Safe Start Check plus Valve On Delay 38 seconds maximum Table 1 Transformer Rating Safety Lockout Timing 4 o...

Страница 3: ... LP gas is heavier than air and will not vent upward naturally Do not operate electric switches lights or appliances until you are sure that work area is free of gas 4 Never install an S89 where water can flood drip or condense on the device It can malfunction if it gets wet 5 Never try to use a device that has been damp or wet replace it 6 If the control might be exposed to water or moisture inst...

Страница 4: ...isconnect the external timer when using an S89E or F To disconnect the timer a Turn off power b Cut the two leadwires at the external timer c Strip the ends of the wires 1 2 in 13 mm and connect with a solderless connector d Restore power 3 Wire system components and S89 as shown in Figures 2 and 3 Refer to appliance manufacturer instructions for connections to other auxiliary controls 4 Make sure...

Страница 5: ...gas supply 6 Gas control closes 7 The module begins the safe start check S89E 10 seconds maximum or safe start check plus valve on delay 30 seconds minimum after which the igniter starts and gas control opens 8 Time system until gas control closes S89 is now in safety lockout The lockout time should be within the specifications in Table 2 9 Open gas supply System remains off and no gas flows to th...

Страница 6: ...lly If adjusting the thermostat does not reset the S89 turn off power to the appliance for 45 seconds and then turn it on Final Checkout With power and gas supply on set thermostat to call for heat and observe operation through at least one complete cycle to make certain that all controls are operating safely BLUE WHITE GROUND BURNER IGNITER M19837 FLAME SENSOR 120 V SPARK GENERATOR BLACK AIR PROV...

Страница 7: ...all for heat ends If flame is not proved the gas control closes and the system is locked out until the S89 is reset If flame is lost after being proved the S89 will close the gas control perform a safe start check and on the S89F valve on delay then return ignition as described above The S89 is reset by turning the thermostat below room temperature or removing power to the system for 45 seconds Fi...

Страница 8: ... to protect the ground wire from radiant heat Check Spark Ignition Circuit The S89 spark generator relay switches 120 Vac to the remote mounted spark generator which in turn powers the spark igniter at the burner Check as follows 1 Shut off gas supply to the gas control 2 Disconnect the ignition cable at the spark generator stud terminal 3 Set the thermostat to call for heat 4 Reset the S89 by rem...

Страница 9: ... SHIELD CABLE IF NECESSARY MAKE SUE BURNER SPARK IGNITER AND S89 GROUND BURNER TERMINAL HAVE EFFECTIVE COMMON GROUND POOR OR ERRATC GROUND WILL CAUSE NUISANCE SHUTDOWNS CHECK FOR CRACKED INSULATOR ON IGNITER OR FLAME SENSOR REPLACE DEVICE WITH CRACKED INSULATOR TO PREVENT SHORT TO GROUND NOTE IF S89 LOCKS OUT RESET BEFORE CONTINUING CHECK FOR 24 VAC ACROSS VALVE AND VALVE GROUND TERMINALS ON S89 I...

Страница 10: ...nt must be at least 0 8 μA and steady 3 If the meter reads less than 0 8 μA or reading is unsteady recheck points under Check Flame Sensor and Igniter above Fig 6 S89 flame current measurement Fig 7 Check burner flame condition GND BURNER 24V GND 24V VALVE VALVE GND SENSE TO SENSOR BLACK RED M19840 FLAME SENSOR CURRENT CHECK USE µA SCALE 0 8 µA DC MINIMUM AND STEADY DISCONNECT WIRE FROM SENSE TERM...

Страница 11: ... 24 V THERMOSTAT SAFE START CHECK CIRCUIT ALTERNATE LIMIT ON OFF SWITCH 24 V GND GND BURNER SENSE WHITE FLAME SENSOR SPARK IGNITER RELAY BLUE BLUE BLACK WIRING EXTERNAL TO S89 WIRING INSIDE S89 2K1 1K2 2K2 SPARK IGNITER SPARK GENERATOR VALVE SPARK IGNITER RELAY 1K 2K VALVE GND SENSOR CIRCUIT TIMING CIRCUIT DUAL VALVE L1 HOT L2 ...

Страница 12: ... in United States Fig 9 S89F simplified control system schematic M19843A LIMIT CONTROL AIR PROVING SWITCH COMBUSTION AIR BLOWER 24 V THERMOSTAT SAFE START CHECK VALVE ON DELAY CIRCUIT COMBUSTION AIR BLOWER RELAY ALTERNATE LIMIT ON OFF SWITCH 24 V GND GND BURNER SENSE WHITE FLAME SENSOR SPARK IGNITER RELAY BLUE BLUE BLACK WIRING EXTERNAL TO S89 WIRING INSIDE S89 2K1 1K2 2K2 SPARK IGNITER SPARK GENE...

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