SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
9 RULES FOR GOOD VENTING
5.Use a 45° elbow in place of a 90° elbow where possible. Avoid the use of a 90° elbow immediately above the draft hood. Allow the maximum vertical rise before any elbow.
VERTICAL RISE
EQUAL TO
1/4” PER FOOT OF HOROZONTAL RUN
HORIZONTAL RUN
6.Horizontal pipe should be sloped upward at a minimum of ¼” per foot.
State Water Heaters | 21 | Technical Training Department |
Ashland City, Tennessee © 2007 |
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