A.O. Smith HW 610 warranty Recovery Capacities, 27.7 33.3

Page 6

TABLE 2, RECOVERY CAPACITIES

	Model	Input	°F	20	40	50	60	70	80

		BTUH (kW)	°C	11.1	22.2	27.7	33.3	38.8	44.4
		BTUH (kW)	°C	11.1	22.2	27.7	33.3	38.8	44.4

	HW 300	300,000 (88)	GPH	1439	719	576	480	411	360

			LPH	5448	2724	2179	1816	1556	1362
			LPH	5448	2724	2179	1816	1556	1362

	HW 399	399,000 (117)	GPH	1914	957	765	638	547	478

			LPH	7245	3623	2898	2415	2070	1811
			LPH	7245	3623	2898	2415	2070	1811

	HW 420	420,000 (123)	GPH	2014	1007	806	671	576	504

			LPH	7627	3813	3051	2542	2179	1907
			LPH	7627	3813	3051	2542	2179	1907

	HW 520	520,000 (152)	GPH	2494	1247	998	831	713	624

			LPH	9443	4721	3777	3148	2698	2361
			LPH	9443	4721	3777	3148	2698	2361

	HW 610	610,000 (179)	GPH	2926	1463	1170	975	836	731

			LPH	11077	5538	4431	3692	3165	2769
			LPH	11077	5538	4431	3692	3165	2769

	HW 670	660,000 (193)	GPH	3165	1583	1266	1055	904	791

			LPH	11985	5992	4794	3995	3424	2996
			LPH	11985	5992	4794	3995	3424	2996

COMPONENT LOCATION

FIGURE 1.

6

Image 6

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 33.3High Altitude Installations IntroductionLIQUefied petroleum gas models 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 Sidewall Optional Power Vent System Multiple Vent TableVenting System 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 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 SET T HE Thermostat to Lowwest Setting URN Pilo T Firing VA LVE CounterclockwiseGeneral Maintenance Manual Reset High Limit Switch Continuity TestRelief Valve 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