A.O. Smith HW 610 warranty Table of Contents

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TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE	2
GENERAL SAFETY	3
TABLE OF CONTENTS	4
DIMENSIONS AND CAPACITY DATA	5
INTRODUCTION	7
Grounding Instructions	7
Correct Gas	7
Precautions	7
Liquid Petroleum Gas Models	7
High Altitude Installations	7
CONTROLS AND FUNCTION	8
High Limit	8
Intermittent Ignition Control Module	8
Thermal Balancer	9
Auto Reset High Limit Control	9
Safety Flow Switch	9
Safety Relief Valves	10
Tank Temperature Control	11
Thermometers (not installed)	12
DRAIN VALVE	12
GENERAL	12
Required Ability	12
Location	12
Air Requirements	13
Chemical Vapor Corrosion	13
Installation Clearances	14
Leveling	14
System Connections	14
VENTING	14
Venting the Boiler	14
Venting Maintenance	16
Venting Sidewall	16
Venting System	16
Venting Tables	17
SYSTEM INSTALLATIONS	18
Installations	18
Conventional	18
Linear Temp	18
Water Supply Line	19
Expansion Tank	19
Vent Valves	20
Manifold Headers	20
Cooling Piping	20
Circulating Pump	20
Gas Connections	20
Gas Supply Line Purging and Sizing	21
Gas Pressure Regulators	22
WIRING	23
WIRING DIAGRAMS	24-33
PIPING	34-39
OPERATION AND START-UP INSTRUCTIONS	39
Important	39
Filling the System	39
Pilot Alignment and Main Burner	39
Lighting Instructions	43-44
Checking and Adjusting Input	41
Operating Sequence	42
REMOVAL OF EXISTING BOILER FROM A COMMON VENTING SYSTEM	45
GENERAL MAINTENANCE	45
Cleaning and Flushing Instructions	46
PRE TROUBLESHOOTING	46
TROUBLESHOOTING	47-54
LIMITED WARRANTY	55

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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 33.3Introduction High Altitude InstallationsLIQUefied petroleum gas models Controls and Function Manual Reset High Limit High Limit Switch Safety Flow SwitchThermal Balancer GPM LPMSafety Relief Valves Tank Temperature Control General ThermometersDrain Valve Not Supplied Required AbilityConfined Space S. Installations Canadian InstallationsAIR Requirements Unconfined SpaceInstallation Clearances Typical Boiler InstallationVenting LevelingVent Pipe Installation Connecting Boiler to a Common VentDraft Hood Vent ConnectionMultiple Vent Table Venting Sidewall Optional Power Vent SystemVenting System Combined Vent Sizing Tables Model HW-300 BoilerSystem Installations Conventional InstallationsLINEAR-TEMP Installations ONE Boiler Installed Independent of the Primary SystemNO. Suggested Items for Installation Schematic of the LINEAR-TEMPSYSTEMBoiler Inlet Outlet Sizes Minimum Branch Sizes to BoilersGAS Connections Purging and Sizing Correct GASExample Specific Multiplier GravityGAS Pressure Regulators Model Rated Manifold Pressure Number Input Natural PropaneWiring Wiring ConnectionsHW 300 to D. SystemSingle 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 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 Wiring Figures 16 and 17 on Pages 24 PipingCommercial Boiler with Vertical Tank 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 Operation and START-UP Instructions Filling the SystemPilot 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 SET T HE Thermostat to Lowwest Setting URN Pilo T Firing VA LVE CounterclockwiseManual Reset High Limit Switch Continuity Test General MaintenanceRelief Valve Cleaning and Flushing Instructions PRE-TROUBLESHOOTINGHOT Water Supply Boilers Preventive Maintenance Internal ContaminantsTroubleshooting CER-TEMP 80 Recovery System Checkout ProcedureYES Burner ignition problems? Is ceramic insulator surrounding the electrode in goodCondition not cracked or broken? Is there excessive draft conditions that may cause pilotMV & MV/PV? Replace pilot burner assembly LED Status and Troubleshooting Location of LEDs Flame LED YellowStatus LED Green OFFNo Call for Heat Not applicable None OFF Limited Warranty Conditions and Exceptions