2 General venting

Requirements for installation in Canada

1.Installations must be made with a vent pipe system certified to ULC-S636.

2.The first three (3) feet of plastic vent pipe from the appliance flue outlet must be readily accessible for visual inspection.

3.The components of the certified vent system must not be interchanged with other vent systems or unlisted pipe/fittings.

Installation & Operation Manual

Sizing

The SYNC boiler uses model specific combustion air intake and vent piping sizes as detailed in Table 2A below.

When determining equivalent combustion air and vent length, add 5 feet for each 90° elbow and 3 feet for each 45° elbow.

EXAMPLE: 20 feet of PVC pipe + (4) 90° elbows + (2) 45° elbows + (1) concentric vent kit (CVK3003) = 49 equivalent feet of piping.

Table 2A Air Intake/Vent Piping Sizes

 

Air Intake

Air Intake

Air Intake

Vent

Vent

Vent

Input

Model

De-Rate per

Diameter

Min. Length

Max. Length

Diameter

Min. Length

Max. Length

 

25 feet of Vent

SB 1000

6"

12'

100'

6"

12'

100'

1.25%

SB 1300

6"

12'

50'

6"

12'

50'

2.90%

SB 1300

7"

12'

100'

7"

12'

100'

0.95%

SB 1500

6"

12'

50'

6"

12'

50'

3.30%

SB 1500

7"

12'

100'

7"

12'

100'

1.65%

Note: When using a 7" vent or air pipe, a field supplied increaser is required.

NOTICE

Increasing or decreasing combustion air or vent piping sizes is not authorized.

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Lochinvar 5 operation manual Requirements for installation in Canada, Sizing

5 specifications

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