Install Instructions

46
Combustion Air (PVC shown) Vent (stainless special gas vent)
90° elbow(s) PVC 90° elbow(s)
Quantity = x 5’ = equiv. ft. a. Quantity = x 5’ = equiv. ft. a.
45° elbow(s) PVC 45° elbow(s)
Quantity = x 2.5’ = equiv. ft. b. Quantity = x 5’ = equiv. ft. b
Straight pipe PVC Straight pipe
Length ft. = x 1 = equiv. ft. c. Length ft. = x 1 = equiv. ft. c.
Horizontal drain tee
Length ft. = x 2' = equiv. ft. d.
Vertical drain tee
Length ft. = x 7' = equiv. ft. e.
Total* a.+b.+c. = equiv. ft. Total* a.+b.+c.+d.+e.= equiv. ft.
* Total length cannot exceed 50 equivalent feet length (ESC3C through ESC7C) or 40 equivalent feet (ESC8C, ESC9C).
Vent and combustion air terminals do not count towards total equiv. ft.
Vent/Combustion Air, Equivalent Length Work Sheet
This sheet is supplied to assist in vent/combustion air, equivalent length calculating
APPENDIX B2 – Direct Venting (continued)
Special Instructions for Stainless Steel Direct Vent (continued)
Figure B-3: Separate Horizontal – Vent/Air Intake Installation