Submittal Sheet

Page 4
MAXIMUM EQUIVALENT HORIZONTAL PIPE LENGTH (FEET)
VENTER MODEL AND VENT PIPE DIAMETER
BTU/HR
INPUT
PVE-100 PVE-300 PVE-600 PVE-1200
3" 4" 4" 5" 6" 5" 6" 8" 8" 10"
25,000 270 455 - - - - - - - -
55,000 100 169 - - - - - - - -
70,000 - 144 - - - - - - - -
100,000 - 100 305 - - - - - - -
145,000 - - 145 247 334 413 - - - -
220,000 - - 64 100 147 181 - - - -
310,000 - - - 54 74 91 146 216 - -
400,000 - - - - - 54 87 134 - -
520,000 - - - - - - 52 86 443 -
610,000 - - - - - - - 66 313 390
700,000 - - - - - - - - 227 330
900,000 - - - - - - - - 180 290
1,000,000 - - - - - - - - 125 190
1,250,000 - - - - - - - - - 80
A. PROCEDURE FOR CALCULATING TOTAL EQUIVALENT PIPE LENGTH IN FEET:
1) Calculate the total equivalent feet for each type of fitting used in the venting system from
the chart below.
2) Calculate the total amount of feet for the straight lengths of vent pipe.
3) Add the equivalent feet for the fittings with the total amount of feet of straight lengths.
EQUIVALENT LENGTH (FEET) OF VENT PIPE FOR VENT PIPE FITTINGS
VENT PIPE DIAMETER
VENT PIPE
FITTINGS
3" 4" 5" 6" 7" 8" 9" 10"
TEE 19 25 31 38 44 50 56 63
90° ELBOW 5 7 9 11 12 14 16 18
45° ELBOW 3 4 4 5 6 7 8 9
1/4 8 11 14 17 19 22 25 28
1/2 5 7 8 10 12 13 15 17
REDUCER
(d/D)
*
3/4 2 3 3 4 4 5 6 6