Termination Clearances Sidewall Power Vent

POWER VENT

(using room air for combustion)

EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION

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FIXED

 

 

 

 

 

 

 

 

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FIXED

 

 

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OPERABL

CLOSED

 

 

 

 

 

 

 

 

 

 

CLOSED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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OPERABL

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V

VENT TERMINAL X AIR SUPPLY INLET

AREA WHERE TERMINAL IS NOT PERMITTED

FIGURE 15.

Vent terminal clearances for “Power Vent” installations. Power Vent configurations use room 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 feet

3 feet (91 cm) within a

A

veranda, porch, deck or

12 inches (30 cm)

12 inches (30 cm)

H

of center line extended

(4.5 m) above the meter/

height 15 feet (4.5 m)

above meter/regulator

above the meter/regulator

 

balcony

 

 

 

assembly

regulator assembly

assembly*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6 inches (15 cm) for appliances up to

4 feet (1.2 m) below

 

 

 

 

 

Clearance to window

10,000 Btu/hr (3 kW), 12 inches (30

 

Clearance to service

 

 

B

cm) for appliances between 10,000

or to side of opening;

I

 

 

or door that may be

regulator vent outlet

3 feet (91 cm)

3 feet (91 cm)*

Btu/hr (3 kW) and 100,000 Btu/hr (30

1 foot (30 cm) above

 

opened

kW), 36 inches (91 cm) for appliances

opening

 

 

 

 

 

 

above 100,000 Btu/hr (30 kW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clearance to a non

6 inches (15 cm) for appliances up

 

 

 

 

 

 

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

4 feet (1.2 m) below or to

 

Clearance to

 

 

 

mechanical air supply

(30 cm) for appliances between

C

 

 

J

side of opening; 1 foot

permanently closed

12 inches (30 cm)*

12 inches (30 cm)*

inlet into building or

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

(30 cm) above opening.

 

window

 

 

 

combustion air inlet to

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

 

 

 

 

 

 

any other appliance

for appliances above 100,000 Btu/

 

 

 

 

 

 

 

hr (30 kW)

 

 

Vertical clearance to

 

 

 

 

 

 

 

ventilated soffit located

 

 

 

Clearance to a

 

3 feet (91 cm) above if

 

above the terminal

 

 

 

 

D

12 inches (30 cm)*

12 inches (30 cm)*

K

 

within

within a horizontal

mechanical air supply

6 feet (1.83 m)

10 feet (3 m) horizontally

 

distance of 2 feet (61

 

 

 

inlet

 

 

 

cm) from the center line

 

 

 

 

 

 

 

of the terminal

 

 

 

 

 

 

 

Clearance to

 

 

 

Clearance above paved

 

 

E

12 inches (30 cm)*

12 inches (30 cm)*

L

sidewalk or paved

7 feet (2.13 m)†

7 feet (2.13 m) †

unventilated soffit

driveway located on

 

 

 

 

 

public property

 

 

F

cornerClearance to outside

 

 

M

Clearance under

 

 

2 feet (60 cm)*

2 feet (60 cm)*

veranda, porch, deck, or

12 inches (30 cm) ‡

12 inches (30 cm) ‡

 

 

 

 

 

balcony

 

 

G

cornerClearance to inside

18 inches (45 cm)*

18 inches (45 cm)*

 

 

 

 

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 shall 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.

VENT PIPE TERMINATION

The first step is to determine where the vent pipe will terminate. See Figures 15, 20 and 21. The vent may terminate through a sidewall as shown in Figure 20 or through the roof as shown in Figure 21.

The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National Fuel Gas Code, (ANSI Z223.1, 12.9.1 through 12.9.4) or the Natural Gas and Propane Installation Code (CAN/CSA-B149.1).

Instructions on proper installation through a sidewall are provided in Figure 15.

Plan the vent system layout so that proper clearances are maintained from plumbing and wiring.

Vent pipes serving power vented appliances are classified by building codes as “vent connectors”. Required clearances from combustible materials must be provided in accordance with information in this manual under LOCATING THE NEW WATER HEATER and INSTALLING THE WATER HEATER, and with the National Fuel Gas Code and local codes.

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Reliance Water Heaters HE50 76N Series 100, 317775-000 Termination Clearances Sidewall Power Vent, Vent Pipe Termination
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317775-000, HE50 76N Series 100 specifications

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The heater is equipped with an Energy Factor (EF) rating that reflects its efficiency in converting energy into hot water. Designed for optimal energy savings, the HE50 76N series features advanced insulation that minimizes heat loss, thus reducing energy bills and promoting sustainability. The insulation also contributes to maintaining a consistent water temperature, ensuring comfort and convenience.

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