A.O. Smith HW 610 warranty

Page 27

NOTE:

1.Building temperature controls supply electric power to building circulator.

2.Main flow switch proves main water flow before energizing sequencing and resetting controls.

3.Outdoor thermostat required if building controls do not provide automatic shutdown of reset controls during warm weather.

Boilers and Secondary

Circulator are Controlled by

Dual Bulb, Dual Switch Controller

Staging and Outdoor Reset of

Main Water Temperature

CONTROL APPLICATION DIAGRAM - FOUR BOILER LINEAR-TEMP® INSTALLATION WITH TWO CIRCULATORS

FIGURE 20.

27

Image 27

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 CapacitiesHigh Altitude Installations IntroductionLIQUefied petroleum gas models Controls and Function GPM LPM Manual Reset High LimitHigh Limit Switch Safety Flow Switch Thermal BalancerSafety Relief Valves Tank Temperature Control Required Ability GeneralThermometers Drain Valve Not SuppliedUnconfined Space Confined Space S. InstallationsCanadian Installations AIR RequirementsLeveling Installation ClearancesTypical Boiler Installation VentingVent Connection Vent Pipe InstallationConnecting Boiler to a Common Vent Draft HoodVenting Sidewall Optional Power Vent System Multiple Vent TableVenting System Model HW-300 Boiler Combined Vent Sizing TablesONE Boiler Installed Independent of the Primary System System InstallationsConventional Installations LINEAR-TEMP InstallationsMinimum Branch Sizes to Boilers NO. Suggested Items for InstallationSchematic of the LINEAR-TEMPSYSTEM Boiler Inlet Outlet SizesGAS Connections Correct GAS Purging and SizingModel Rated Manifold Pressure Number Input Natural Propane ExampleSpecific Multiplier Gravity GAS Pressure RegulatorsWiring Connections WiringHW 300 thru 670. Natural and Propane GAS U.S. & Canada HW 300 toD. System Single Stage I.I.D. Honeywell GAS ValveLINEAR-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 USE this Table for Correct Pump and Water Pipe Size Wiring Figures 16 and 17 on Pages 24Piping Commercial Boiler with Vertical TankCommercial 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 Main Burner Operation and START-UP InstructionsFilling the System Pilot and Main BurnerPilot 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 SettingGeneral Maintenance Manual Reset High Limit Switch Continuity TestRelief Valve Internal Contaminants Cleaning and Flushing InstructionsPRE-TROUBLESHOOTING HOT Water Supply Boilers Preventive MaintenanceCER-TEMP 80 Recovery System Checkout Procedure TroubleshootingYES 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 GreenNo Call for Heat Not applicable None OFF Conditions and Exceptions Limited Warranty