A.O. Smith VB/VW- 750, VB/VW- 1000 instruction manual Termination Clearances Sidewall Direct Vent

Page 15

Termination Clearances Sidewall Direct Vent

 

 

 

 

 

 

DIRECT VENT

 

 

 

 

 

 

 

 

(using outdoor air for combustion)

 

 

 

 

EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

 

D

 

 

 

 

 

A

 

 

 

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

vE

 

 

 

 

 

 

 

 

 

 

 

 

 

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B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

v

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

C

 

B

 

 

 

V

 

 

 

 

 

 

 

 

 

 

 

FIXED

 

 

 

 

 

 

 

 

 

 

 

E

 

 

 

 

 

 

V

FIXED

 

V

 

OPERABL

CLOSED

 

M

 

X

 

 

 

CLOSED

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERABL

E

 

 

 

 

X

 

 

 

 

 

 

V

B

 

V

 

 

 

 

 

 

 

F

 

 

 

 

 

 

 

 

 

 

 

 

B

 

J

 

 

 

K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

V

VENT TERMINAL

X AIR SUPPLY INLET

 

AREA WHERE TERMINAL IS NOT PERMITTED

Figure 9G.

Vent terminal clearances for “Direct Vent” installations. Direct Vent configurations use outdoor air for combustion.

 

 

Canadian Installations 1

US Installations 2

 

 

Canadian Installations 1

US Installations 2

 

Clearance above grade,

 

 

 

Clearance to each side

3 feet (91 cm) within a height 15

3 feet (91 cm) within a height

A

 

 

H

of center line extended

veranda, porch, deck or

12 inches (30 cm)

12 inches (30 cm)

above meter/regulator

feet (4.5 m) above the meter/

15 feet (4.5 m) above the

 

balcony

 

 

 

assembly

regulator assembly

meter/regulator assembly*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6 inches (15 cm)

 

 

 

 

 

 

6 inches (15 cm) for appliances

for appliances up to

 

 

 

 

 

 

10,000 Btu/hr (3 kW),

 

 

 

 

 

 

up to 10,000 Btu/hr (3 kW), 12

 

 

 

 

 

 

9 inches (23 cm) for

 

 

 

 

 

 

inches (30 cm) for appliances

 

 

 

 

B

Clearance to window or

appliances between

I

Clearance to service

 

 

between 10,000 Btu/hr (3 kW)

3 feet (91 cm)

3 feet (91 cm)*

door that may be opened

10,000 Btu/hr (3 kW)

regulator vent outlet

 

 

and 100,000 Btu/hr (30 kW), 36

and 50,000 Btu/hr (15

 

 

 

 

 

 

inches (91 cm) for appliances

 

 

 

 

 

 

kW), 12 inches (30 cm)

 

 

 

 

 

 

above 100,000 Btu/hr (30 kW)

 

 

 

 

 

 

for appliances above

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50,000 Btu/hr (15 kW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6 inches (15 cm) for appliances up

6 inches (15 cm) for

 

 

 

 

 

 

appliances up to 10,000

 

 

 

 

 

Clearance to a non

to 10,000 Btu/hr (3 kW), 12 inches

 

 

 

 

 

Btu/hr (3 kW), 9 inches (23

 

Clearance to

 

 

 

mechanical air supply

(30 cm) for appliances between

C

 

 

J

cm) for appliances between

permanently closed

6 inches (15 cm)*

6 inches (15 cm)*

inlet into building or

10,000 Btu/hr (3 kW) and 100,000

10,000 Btu/hr (3 kW) and

 

window

 

 

 

combustion air inlet to

Btu/hr (30 kW), 36 inches (91 cm)

50,000 Btu/hr (15 kW), 12

 

 

 

 

 

any other appliance

for appliances above 100,000 Btu/

 

 

 

 

 

inches (30 cm) for appliances

 

 

 

 

 

 

hr (30 kW)

 

 

 

 

 

 

above 50,000 Btu/hr (15 kW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vertical clearance to

 

 

 

 

 

 

 

ventilated soffit located

 

 

 

Clearance to a

 

 

D

above the terminal within

 

 

K

 

3 feet (91 cm) above if within

12 inches (30 cm)*

12 inches (30 cm)*

mechanical air supply

6 feet (1.83 m)

a horizontal distance of

10 feet (3 m) horizontally

 

2 feet (61 cm) from the

 

 

 

inlet

 

 

 

 

 

 

 

 

 

 

center line of the terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clearance above

 

 

E

Clearance to unventilated

12 inches (30 cm)*

12 inches (30 cm)*

L

paved sidewalk or

7 feet (2.13 m)†

7 feet (2.13 m)†*

soffit

paved driveway located

 

 

 

 

 

on public property

 

 

 

 

 

 

 

 

 

 

F

cornerClearance to outside

 

 

M

Clearance under

 

 

2 feet (60 cm)*

2 feet (60 cm)*

veranda, porch, deck,

12 inches (30 cm) ‡

12 inches (30 cm) ‡*

 

 

 

 

 

or balcony

 

 

G

cornerClearance to inside

8 ft. (2.44 m)*

8 ft. (2.44 m)*

 

 

 

 

1 In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code. 2 In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.

†A vent should not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer’s installation instructions.

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Contents Models Safe INSTALLATION, USE and Service General Safety GAS and Electrical Characteristics Dimension and capacity dataCapacity and Flow data Recovery CapacitiesIntroduction ContentsGrounding Instructions PrecautionsHigh Altitude Installations Field Installed ComponentsControl Components Circulating Pump Water Temperature Limit ControlsON/OFF Switch Temperature ProbesVB HOT Water Heating BOILERS, are shipped with a 50 psi Required AbilityLocation Panels and CoversAir Requirements Breathing Hazard Carbon Monoxide Gas Installtion ClearancesChemical Vapor Corrosion LevelingOutdoor Air Through Two Vertical Ducts Outdoor Air Through Two OpeningsOutdoor Air Through One Opening OutdoorAir Through Two HorizontalDuctsAir From Other Indoor Spaces Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentSpecial Installation Considerations Venting System Using AL 29-4CConnecting Vent to Boiler Vertical Installation Requirements Horizontal Installtion RequirementsVenting Supports Vertical Termination BELOW. Keep Clear of ALL Obstructions Direct Vent Installation RequirementsDirect Vent Horizontal Direct Vent Using TWT with Vertical Intake System installation GeneralHot Water Heating Hydronic Equipment Thermal Expansion Closed System Remote Probe Installation ProcedureInternal Contaminants Hard Water ConditionsGas Supply Line Sizing Gas ConnectionsTypical PRIMARY, Secondary Piping ONE VF Model VW HOT Water Supply Boiler with Vertical Tank ONE VF Model VW HOT Water Supply Boiler with Horizontal Tank Wiring Suggested Pipe Size For Multiple Gas Appliances Propane Gas Suggested Pipe Size For Multiple Gas Appliances Natural GasConnection Diagram Wiring DiagramPage VB/VW-500, 750 & 1000 Schematic Diagram Purging Gas Line Filling and Purging of Heating Boiler InstallationFilling Hot Water Supply Boiler Installation OperationRisk of Scalds Water Temperature RegulationMCB Ten Position Dipswitch MCB/FCB DipswitchesMCB Three position Dipswitch Lighting & Operation Instructions for Models VB/VW 500, 750 Propane AdjustmentSetting of the Test Mode High Fire Setting Natural GASInputs to MCB Operating Sequence Temperature Setpoints System Control AlgorithmUIM Operating Procedures Description of FCB control states OperatingSetpointAdjustmentProcedureHighLimitDifferentialSetpointAdjustment Procedure UIM LED’s Fault Messages and Troubleshooting GuideFault Displayed Description Red LED Lockout Troubleshooting Ignition SystemPreventative maintenance Troubleshooting Gas ValveMain Burner Blower Compartment Burner MaintenanceRelief Valve Combustion Air FilterReplacement Parts Venting MaintenanceHeatExchangerPreventativeMaintenance Tube Cleaning Procedure Mechanical Removal of DepositsPage Page Page Limited Warranty Tennessee Waltz Parkway, Ashland City, TN Phone

VB/VW- 1000, VB/VW- 750 specifications

A.O. Smith is a renowned name in the water heating industry, and their VB/VW-750 and VB/VW-1000 models reflect the cutting-edge advancements in both design and functionality. These commercial water heaters stand out due to their innovative features and robust characteristics, making them ideal solutions for various applications in commercial settings.

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