A.O. Smith HW 610 warranty Is ceramic insulator surrounding the electrode in good

Page 49

CHECKING HONEYWELL S8600H OR S-8610M

INTERMITTENT IGNITION CONTROLS

SPARK AT PILOT BURNER BUT PILOT WILL NOT LIGHT

Attach wires firmly.

Replace gas valve.

Turn on power supply.

Securely connect

cable and/or ground

wire.

Replace pilot burner and/or ground wire.

NO

Ensure all manual shutoff valves are fully open; all filters are clean; all gas connections are gas tight; pilot tubing is not damaged, obstructed or kinked; and pilot orifice is unclogged. Check for air in gas line, purge (bleed) line if necessary.

				YES
	NO
	NO	Are the wires securely attached to the pilot operator on the gas

		control and to the PV & MV/PV terminals on the ignition module?

				YES

		Install a pressure gauge in the pilot tubing line between the
	NO	gas control and the pilot burner assembly. Ensure that the pilot
		adjustment screw (under cap) is adjusted to a position that will
		permit gas to flow.
		Is pilot gas flowing during ignition attempt?

				YES

			Turn off power supply.

				YES
				YES

	NO	Is ignition cable firmly plugged into pilot assembly and module?
	NO	Is ground wire firmly attached to pilot assembly and GND
		Is ground wire firmly attached to pilot assembly and GND
		terminal on module?

				YES

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

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

NO

YES

Ensure ground strap is the closest metal to the igniter/sensor rod (electrode) to prevent the spark from shorting out to other metal parts (pilot screen, pilot shield, etc.).

Ignition cable must not touch metal surfaces or current carrying wires.

Is there a 1/8” gap between ground strap and electrode?

Replace pilot burner.

Replace ignition

module.

			YES
	NO
	NO	Is ceramic insulator surrounding the electrode in good
		Is ceramic insulator surrounding the electrode in good
		condition (not cracked or broken)?

			YES
	NO
	NO	Is there excessive draft conditions that may cause pilot
		burner ignition problems?
			YES

Correct draft problems in a manner that would ensure adequate combustion and ventilation air and proper pilot burner performance.

49

Image 49

Contents Tennessee Waltz Parkway Ashland City, TN Models HW 300, 399, 420, 520, 610Important Definitions Safe INSTALLATION, USE and ServiceGeneral Safety Table of Contents Propane Natural Dimensions and Capacity Data27.7 33.3 Recovery CapacitiesIntroduction High Altitude InstallationsLIQUefied petroleum gas models Controls and Function High Limit Switch Safety Flow Switch Manual Reset High LimitThermal Balancer GPM LPMSafety Relief Valves Tank Temperature Control Thermometers GeneralDrain Valve Not Supplied Required AbilityCanadian Installations Confined Space S. InstallationsAIR Requirements Unconfined SpaceTypical Boiler Installation Installation ClearancesVenting LevelingConnecting Boiler to a Common Vent Vent Pipe InstallationDraft Hood Vent ConnectionMultiple Vent Table Venting Sidewall Optional Power Vent SystemVenting System Model HW-300 Boiler Combined Vent Sizing TablesConventional Installations System InstallationsLINEAR-TEMP Installations ONE Boiler Installed Independent of the Primary SystemSchematic of the LINEAR-TEMPSYSTEM NO. Suggested Items for InstallationBoiler Inlet Outlet Sizes Minimum Branch Sizes to BoilersGAS Connections Correct GAS Purging and SizingSpecific Multiplier Gravity ExampleGAS Pressure Regulators Model Rated Manifold Pressure Number Input Natural PropaneWiring Connections WiringD. System HW 300 toSingle Stage I.I.D. Honeywell GAS Valve HW 300 thru 670. Natural and Propane GAS U.S. & CanadaLINEAR-TEMP Installations Boilers and Secondary Circulator are Controlled by Page MODELS, Jucntion BOX W/4 Terminals Canadian MODELS, Junction BOX W/6 TerminalsCanadian MODELS, Junction BOX W/6 Terminals Schematic MODELS, Junction BOX W/4 Terminals MODELS, Junction BOX W/4 Terminals Piping Wiring Figures 16 and 17 on Pages 24Commercial Boiler with Vertical Tank USE this Table for Correct Pump and Water Pipe SizeCommercial Boiler with Horizontal Tank Commercial Boiler with Vertical TANK, CER-TEMP Wiring Figures 21 to 27 on Pages 28 toHW-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 Filling the System Operation and START-UP InstructionsPilot and Main Burner Main BurnerPilot Burner Electronic Ignition Consumption Rate Checking and Adjusting the InputRefer 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 SettingManual Reset High Limit Switch Continuity Test General MaintenanceRelief Valve PRE-TROUBLESHOOTING Cleaning and Flushing InstructionsHOT Water Supply Boilers Preventive Maintenance Internal ContaminantsCER-TEMP 80 Recovery System Checkout Procedure TroubleshootingYES Is ceramic insulator surrounding the electrode in good Burner ignition problems?Condition not cracked or broken? Is there excessive draft conditions that may cause pilotMV & MV/PV? Replace pilot burner assembly Location of LEDs Flame LED Yellow LED Status and TroubleshootingStatus LED Green OFFNo Call for Heat Not applicable None OFF Conditions and Exceptions Limited Warranty