A.O. Smith HW 610 warranty Mv & Mv/Pv?

Page 50

CHECKING HONEYWELL S-8600H OR S8610M

INTERMITTENT IGNITION CONTROLS

PILOT BURNER LIGHTS BUT MAIN BURNER DOES NOT LIGHT

Correct the situation by consulting the installation or user’s manual on how to adjust pilot flame.

Replace		NO
Replace		NO	Is voltage (24 Vac) across terminals
ignition			MV & MV/PV?
ignition
module.
module.
				YES
				YES

NO

NO

Does the pilot flame cover 3/8” to 1/2” of ingniter/sensor rod?

YES

Does spark stay on for more than

15 seconds after the pilot is “proven” (lit)?

Attach

wires firmly.

NO

Are the wires securely attached to the main valve operator on the gas control and to terminals MV & MV/PV on ignition module?

YES

Replace main gas valve.

YES

Replace pilot burner and/or ground wire.

NO

Ensure the ground wire and ignition cable are separate from each other (prevents shorting out).

Are they in good condition (not brittle, burnt or cracked)?

YES

Replace pilot burner.

Clean rod or replace

pilot burner if necessary.

NO

NO

Is the ceramic insulator surrounding the igniter/sensor rod in good condition (not broken or cracked)?

YES

Is the igniter/sensor rod in good condition (not worn, corroded, sooted or damaged)?

YES

Replace ignition module.

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