Replace pilot burner assembly | A.O. Smith HW 610 instruction

CHECKING HONEYWELL S8600H OR S-8610M

INTERMITTENT IGNITION CONTROLS

NO SPARK AT PILOT BURNER BUT PILOT WILL NOT LIGHT

Fix connection and/or tighten module to the appliance.

Check the circuit providing 24 VAC.

Replace ignition module.

Turn on gas supply and/or power supply.

Securely connect cable and/or ground wire.

Replace pilot burner and/or ground wire.

Carefully bend down- wards top of ground strap to achieve 1/8” spark gap.

Replace ignition module.

NO

NO

NO

NO

NO

NO

NO

Turn off gas supply.

Is there a good connection between terminals?

Is module securely attached to appliance for good ground connection?

YES

Is voltage (24VAC) across transformer positive terminal and GND with "call for heat"?

YES

Is voltage (24VAC) across ignition module terminals 24 Volt and GND on "call for heater"?

NOTE: (For LP models only) Pilot Valve will be de-energized if module goes into lockout condition. Reset system by turning electrical power off or by turning system controller down below "call for heat". Wait one minute then turn system on.

YES

Turn off power supply.

Is high voltage cable assembly firmly plugged into module?

Is pilot ground wire firmly attached to the pilot assembly and GND terminal on module?

YES

Are high voltage cable and ground wire in good condition (not brittle, burnt or cracked)?

YES

Make sure pilot flame spreader (hood) is the closest metal to

the electrode to prevent the spark from shorting out to other metal parts (pilot screen, pilot shield, etc).

High voltage cable must not touch metal surfaces or current carrying wires.

Is there a 7/64" spark gap between the tip (edge) of the hood and electrode, and is the gap located in the pilot gas stream?

YES

Is the ceramic insulator surrounding the electrode in good condition (not cracked or broken)?

YES

Replace pilot burner assembly.

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Image 51

A.O. Smith HW 610 warranty Replace pilot burner assembly

Contents

Tennessee Waltz Parkway Ashland City, TN Models HW 300, 399, 420, 520, 610 Important Definitions Safe INSTALLATION, USE and Service General Safety Table of Contents Propane Natural Dimensions and Capacity Data 27.7 33.3 Recovery Capacities High Altitude Installations IntroductionLIQUefied petroleum gas models Controls and Function GPM LPM Manual Reset High LimitHigh Limit Switch Safety Flow Switch Thermal Balancer Safety Relief Valves Tank Temperature Control Required Ability GeneralThermometers Drain Valve Not Supplied Unconfined Space Confined Space S. InstallationsCanadian Installations AIR Requirements Leveling Installation ClearancesTypical Boiler Installation Venting Vent Connection Vent Pipe InstallationConnecting Boiler to a Common Vent Draft Hood Venting Sidewall Optional Power Vent System Multiple Vent TableVenting System Model HW-300 Boiler Combined Vent Sizing Tables ONE Boiler Installed Independent of the Primary System System InstallationsConventional Installations LINEAR-TEMP Installations Minimum Branch Sizes to Boilers NO. Suggested Items for InstallationSchematic of the LINEAR-TEMPSYSTEM Boiler Inlet Outlet Sizes GAS Connections Correct GAS Purging and Sizing Model Rated Manifold Pressure Number Input Natural Propane ExampleSpecific Multiplier Gravity GAS Pressure Regulators Wiring Connections Wiring HW 300 thru 670. Natural and Propane GAS U.S. & Canada HW 300 toD. System Single Stage I.I.D. Honeywell GAS Valve LINEAR-TEMP Installations Boilers and Secondary Circulator are Controlled by Page MODELS, Jucntion BOX W/4 Terminals Canadian MODELS, Junction BOX W/6 Terminals Canadian MODELS, Junction BOX W/6 Terminals Schematic MODELS, Junction BOX W/4 Terminals MODELS, Junction BOX W/4 Terminals USE this Table for Correct Pump and Water Pipe Size Wiring Figures 16 and 17 on Pages 24Piping Commercial Boiler with Vertical Tank Commercial Boiler with Horizontal Tank Commercial Boiler with Vertical TANK, CER-TEMP Wiring Figures 21 to 27 on Pages 28 to HW-300 HW-399 HW-420 HW-520 Three HW-520s, HW-610s or HW-670s UP-FLOW Model USE this Table for Correct Pump and Water Pipe Size Main Burner Operation and START-UP InstructionsFilling the System Pilot and Main Burner Pilot Burner Electronic Ignition Checking and Adjusting the Input Consumption RateRefer to Operating at Full Input or Full Capacity Stage Main Burner Operation Flame Current Sensed For Your Safety Read Before Lighting URN Pilo T Firing VA LVE Counterclockwise SET T HE Thermostat to Lowwest Setting General Maintenance Manual Reset High Limit Switch Continuity TestRelief Valve Internal Contaminants Cleaning and Flushing InstructionsPRE-TROUBLESHOOTING HOT Water Supply Boilers Preventive Maintenance CER-TEMP 80 Recovery System Checkout Procedure Troubleshooting YES Is there excessive draft conditions that may cause pilot Burner ignition problems?Is ceramic insulator surrounding the electrode in good Condition not cracked or broken? MV & MV/PV? Replace pilot burner assembly OFF LED Status and TroubleshootingLocation of LEDs Flame LED Yellow Status LED Green No Call for Heat Not applicable None OFF Conditions and Exceptions Limited Warranty