A.O. Smith HW 610 warranty Combined Vent Sizing Tables, Model HW-300 Boiler

Page 17

TABLE 5, COMBINED VENT SIZING TABLES

MODEL HW-300 BOILER

	Input: 300,000 Btuh								Draft Hood Outlet 8"
	Required Connector or					Smoke Pipe Diameter
	Connector		Total Vent Height (Measured in Feet Above Draft Hood)
	Connector	10		15	20		30		40	50	60		80		100
	Rise in Feet	10		15	20		30		40	50	60		80		100
	Rise in Feet					Connector Diameter (in Inches)
						Connector Diameter (in Inches)
	1	10		10	10		10		10	10	10		10		10
	2	10		10	10		10		10	10	10		10		10
	3	10		10	10		10		10	10	10		10		10
	4 or more
Number	Total Input		Total Vent Height (Measured in Feet Above Draft Hood)
if Units	Total Input	10		15	20		30		40	50	60		80		100
if Units	Btuh x 1000	10		15	20		30		40	50	60		80		100
Combined	Btuh x 1000			Manifold and Common Vent Diameter (in Inches)
Combined				Manifold and Common Vent Diameter (in Inches)
2	600	14		12	12		12		10	10	10		10		10
3	900	16		14	14		14		12	12	12		12		12
4	1200	18		16	16		14		14	14	14		12		12

		MODEL HW-399 BOILER
	Input: 399,000 Btuh								Draft Hood Outlet 10"
	Required Connector or					Smoke Pipe Diameter
	Connector		Total Vent Height (Measured in Feet Above Draft Hood)
	Connector	10		15	20		30		40	50	60		80		100
	Rise in Feet	10		15	20		30		40	50	60		80		100
	Rise in Feet					Connector Diameter (in Inches)
						Connector Diameter (in Inches)
	1	12		12	12		12		12	12	12		12		12
	2	12		12	12		10		10	10	10		10		10
	3	12		10	10		10		10	10	10		10		10
	4 or more	10		10	10		10		10	10	10		10		10
Number	Total Input		Total Vent Height (Measured in Feet Above Draft Hood)
if Units	Total Input	10		15	20		30		40	50	60		80		100
if Units	Btuh x 1000	10		15	20		30		40	50	60		80		100
Combined	Btuh x 1000			Manifold and Common Vent Diameter (in Inches)
Combined				Manifold and Common Vent Diameter (in Inches)
2	798	14		14	14		12		12	12	12		12		12
3	1197	18		16	16		14		14	14	14		14		12
4	1596	20		20	18		16		16	16	14		14		14

		MODEL HW-420 BOILER
	Input: 420,000 Btuh								Draft Hood Outlet 10"
	Required Connector or					Smoke Pipe Diameter
	Connector		Total Vent Height (Measured in Feet Above Draft Hood)
	Connector	10		15	20		30		40	50	60		80		100
	Rise in Feet	10		15	20		30		40	50	60		80		100
	Rise in Feet					Connector Diameter (in Inches)
						Connector Diameter (in Inches)
	1	12		12	12		12		12	12	12		12		12
	2	12		12	12		10		10	10	10		10		10
	3	12		10	10		10		10	10	10		10		10
	4 or more	10		10	10		10		10	10	10		10		10
Number	Total Input		Total Vent Height (Measured in Feet Above Draft Hood)
if Units	Total Input	10		15	20		30		40	50	60		80		100
if Units	Btuh x 1000	10		15	20		30		40	50	60		80		100
Combined	Btuh x 1000			Manifold and Common Vent Diameter (in Inches)
Combined				Manifold and Common Vent Diameter (in Inches)
2	840	14		14	14		12		12	12	12		12		12
3	1260	18		16	16		14		14	14	14		14		12
4	1680	20		20	18		16		16	16	14		14		14

		MODEL HW-520 BOILER
	Input: 520,000 Btuh								Draft Hood Outlet 10"
	Required Connector or					Smoke Pipe Diameter
	Connector		Total Vent Height (Measured in Feet Above Draft Hood)
	Connector	10		15	20		30		40	50	60		80		100
	Rise in Feet	10		15	20		30		40	50	60		80		100
	Rise in Feet					Connector Diameter (in Inches)
						Connector Diameter (in Inches)
	1	14		14	14		12		12	12	12		12		12
	2	12		12	12		12		12	12	12		12		12
	3	12		12	12		12		10	10	10		10		10
	4 or more	12		12	12		12		10	10	10		10		10
Number	Total Input		Total Vent Height (Measured in Feet Above Draft Hood)
if Units	Total Input	10		15	20		30		40	50	60		80		100
if Units	Btuh x 1000	10		15	20		30		40	50	60		80		100
Combined	Btuh x 1000			Manifold and Common Vent Diameter (in Inches)
Combined				Manifold and Common Vent Diameter (in Inches)
2	1040	16		16	14		14		14	14	12		12		12
3	1560	20		18	18		16		16	14	14		14		14
4	2080	22		22	20		18		18	18	16		16		14
5	2600	26		24	22		20		20	18	18		18		18
6	3120	28		26	24		22		22	20	20		18		18
7	3640	30		28	26		24		24	22	22		20		20
8	4160	32		30	28		26		24	24	22		22		20

MODEL HW-610 BOILER

	Input: 610,000 Btuh								Draft Hood Outlet 12"
	Required Connector or					Smoke Pipe Diameter
	Connector		Total Vent Height (Measured in Feet Above Draft Hood)
	Connector	10		15	20		30		40	50	60		80		100
	Rise in Feet	10		15	20		30		40	50	60		80		100
	Rise in Feet					Connector Diameter (in Inches)
						Connector Diameter (in Inches)
	1	16		14	14		14		14	14	14		14		14
	2	14		14	14		14		14	12	12		12		12
	3	14		14	12		12		12	12	12		12		12
	4 or more	12		12	12		12		12	12	12		12		12
Number	Total Input		Total Vent Height (Measured in Feet Above Draft Hood)
if Units	Total Input	10		15	20		30		40	50	60		80		100
if Units	Btuh x 1000	10		15	20		30		40	50	60		80		100
Combined	Btuh x 1000			Manifold and Common Vent Diameter (in Inches)
Combined				Manifold and Common Vent Diameter (in Inches)
2	1220	18		18	16		16		14	14	14		14		14
3	1830	22		20	20		18		18	16	16		16		14
4	2440	26		24	22		20		20	18	18		18		16
5	3050	28		26	26		24		22	22	20		20		18
6	3660	32		28	28		26		24	24	22		22		20
7	4270	34		32	30		28		26	24	24		22		22
8	4880	36		34	32		30		28	26	26		24		24
9	5490	38		36	34		30		30	28	28		26		24
10	6100	40		38	36		32		30	30	28		26		26
11	6710	42		38	38		34		32	30	28		28		26
12	7320	44		42	38		36		34	32	32		30		28

		MODEL HW-670 BOILER
Input: 660,000 or 670,000 Btuh									Draft Hood Outlet 12"
	Required Connector or					Smoke Pipe Diameter
	Connector		Total Vent Height (Measured in Feet Above Draft Hood)
	Connector	10		15	20		30		40	50	60		80		100
	Rise in Feet	10		15	20		30		40	50	60		80		100
	Rise in Feet					Connector Diameter (in Inches)
						Connector Diameter (in Inches)
	1	16		14	14		14		14	14	14		14		14
	2	14		14	14		14		14	12	12		12		12
	3	14		14	12		12		12	12	12		12		12
	4 or more	12		12	12		12		12	12	12		12		12
Number	Total Input		Total Vent Height (Measured in Feet Above Draft Hood)
if Units	Total Input	10		15	20		30		40	50	60		80		100
if Units	Btuh x 1000	10		15	20		30		40	50	60		80		100
Combined	Btuh x 1000			Manifold and Common Vent Diameter (in Inches)
Combined				Manifold and Common Vent Diameter (in Inches)
2	1220	18		18	16		16		14	14	14		14		14
3	1830	22		20	20		18		18	16	16		16		14
4	2440	26		24	22		20		20	18	18		18		16
5	3050	28		26	26		24		22	22	20		20		18
6	3660	32		28	28		26		24	24	22		22		20
7	4270	34		32	30		28		26	24	24		22		22
8	4880	36		34	32		30		28	26	26		24		24
9	5490	38		36	34		30		30	28	28		26		24
10	6100	40		38	36		32		30	30	28		26		26
11	6710	42		38	38		34		32	30	28		28		26
12	7320	46		44	40		38		36	34	34		32		30

Known: (5) model HW-610 boilers. (See illustration). Connector rise - 2' (Note 1' is minimum). Total vent height 30'.

Problem: Determine diameter of connector, manifold and common vent.

Procedure: Enter the top of the HW-610 table (total vent height) at 30' and the side at 2' (connector rise). A 14" connector diameter is indicated for each connector rise.

To determine the manifold and common vent size, enter table on this page (total vent height) at 30 and the side at 5 boilers. A manifold diameter of 24" (610 mm) is indicated.

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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 CapacitiesLIQUefied petroleum gas models High Altitude InstallationsIntroduction 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 Space Typical Boiler Installation Installation Clearances Venting LevelingConnecting Boiler to a Common Vent Vent Pipe InstallationDraft Hood Vent ConnectionVenting System Venting Sidewall Optional Power Vent SystemMultiple Vent Table 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 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 URN Pilo T Firing VA LVE Counterclockwise SET T HE Thermostat to Lowwest SettingRelief Valve General MaintenanceManual Reset High Limit Switch Continuity Test 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