GSW POWER VENTED GAS FIRED WATER HEATER Air Requirements for Canadian Installations

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Air Requirements for Canadian

Installations

Canadian Codes allow for the use of a single air supply source. Canadian customers and authorities having jurisdiction may use the sizing listed in Table 1. Check Local Codes.

When using a single air supply, the duct shall terminate within 1 foot (30 cm) above and within 2 feet (60 cm) horizontally from the burner level of the appliance having the largest input as shown in Figure 3 (b), (c) and (d).

An opening shall be located neither more than 18 inches (450 mm), nor less than 6 inches (150 mm), above floor level. See Figure 3 (b), (c) and (d).

Two permanent openings shall be provided connecting the confined space (e.g., closet/small room) with the unconfined space. Each opening shall have a free area of one square inch per 1,000 BTU/hour input (5.5 cm²/kW) of all appliances in the confined space. The top opening shall commence within 12" (30 cm) of the top of space and the bottom opening shall commence within 12" (30 cm) of the bottom of the enclosure. See Figure 3

(a).

All exterior vent openings are to be clear of snow levels.

Table 1

Combined Input of All

Required

Acceptable Round

Appliances in Confined

Free Area

Duct Size Diameter

 

Space*

 

 

 

 

 

 

 

 

 

A 1

B 2

 

 

 

 

 

BTU/hr

(KW/hr)

In.2

cm2

In.

mm

In.

mm

 

 

 

 

 

 

 

 

 

25,000

(8)

 

7(45)

 

3(75)

4(100)

 

 

 

 

 

 

 

50,000

(15)

 

7(45)

 

3(75)

4(100)

 

 

 

 

 

 

75,000

(23)

 

11 (70)

4(100)

5(125)

 

 

 

 

 

 

100,000

(30)

 

14(90)

4(100)

5(125)

 

 

 

 

 

 

125,000

(37)

 

18(120)

5(125)

6(150)

 

 

 

 

 

 

150,000

(45)

 

22(140)

5(125)

6(150)

 

 

 

 

 

 

 

 

 

1 Maximum length of ducts in column A is 20 equivalent feet (6.1 meters)

2 Maximum length of ducts in column B is 50 equivalent feet (15.2 meters)

*All appliances refers to and includes those appliances using the same air source. e.g. Water heater, furnace, boiler, clothe dryer, etc.

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Contents Superflue Page Introduction Installation Code RequirementsSafety Warnings Important Consumer NoticeCheck Local Codes Hydrogen GAS can be Produced in aLocation and Clearances Combustion Air Supply Ducts Louvers and GrillsAir Requirements for Canadian Installations Venting Instructions Power Vent ConnectionSupported Venting can Pose a Safety Hazard Or Bending of ANY SectionGas Service IV Water Pipe ConnectionsHeat Directly to the Water Heater If OVER-PRESSURIZATION has Occurred Gas PressureElectrical Supply Purging CautionVI Lighting and Operating Instructions Read Before ProceedingInitial Start Up Performance ChecksNot Enough or No Hot Water CondensationCathodic Protection Anode Hot Water Odour To inspect or change an anodeEnergy Cut-off Control E.C.O Water Temperature is Too HotVent Maintenance Water Heater Makes NoiseBurner Maintenance Installation Page

POWER VENTED GAS FIRED WATER HEATER specifications

The GSW Power Vented Gas Fired Water Heater is a robust and reliable choice for households seeking efficient hot water solutions. Renowned for its innovation and performance, this water heater is engineered to provide an uninterrupted supply of hot water while ensuring safety and energy efficiency.

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