ULTRAFORCE COMMERCIAL GAS WATER HEATER
SUF 120 thru 400 SERVICE HANDBOOK
VENTING TABLES SUF 120 – 250
Maximum equivalent feet of intake and vent pipe using 3” PVC is 50 feet (15.2m). Equivalent feet must include any 90° elbows (two 45° elbows equal one 90° elbow). Three inch diameter 90° elbows are equivalent to 5' (1.5m) of pipe.
Maximum equivalent feet of intake and vent pipe using 4” PVC is 120 feet (36.6m). Equivalent feet must include any 90° elbows (two 45° elbows equal one 90° elbow). Four inch diameter 90° elbows are equivalent to 5' (1.5m) of pipe.
Vent Length Table Equivalent Feet (Meters) 120 through 250
Number of 90° | 3" Minimum | 3" Maximum | 4"Maximum |
Elbows | Pipe (Ft./M.) | Pipe (Ft./M.) | Pipe (Ft./M.) |
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ONE (1) | 7/2.1 | 45/13.7 | 115/35 |
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TWO (2) | 7/2.1 | 40/12.2 | 110/33.5 |
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THREE (3) | 7/2.1 | 35/10.7 | 105/32 |
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FOUR (4) | 7/2.1 | 30/9.1 | 100/30.5 |
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FIVE (5) | 7/2.1 | 95/29 | |
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SIX (6) | 7/2.1 | 90/27.4 | |
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VENTING TABLES SUF 300,400,
Vent Length Table Equivalent Feet (Meters) 300,400,
Number of | 4" PVC |
90°Elbows | Maximum Feet / meters of Pipe |
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ONE (1) | 65' / 19.7 m |
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TWO (2) | 60' / 18.2 m |
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THREE (3) | 55' / 16.7 m |
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FOUR (4) | 50' / 15.2 m |
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FIVE (5) | 45' / 13.6 m |
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SIX (6) | 40' / 12.1 m |
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State Water Heaters – Technical Training Department 9 | Ashland City, Tennessee © 2009 |
Servicing should only be performed by a Qualified Service Agent |
