49
VENT PIPE SIZING AND MAXIMUM VENT LENGTHS (cont.)
GENERAL VENTING REQUIREMENTS AND
GUIDELINES
',9-%*<F**0,>(0/0*%./($,-%&'*$%&'*-%&)'?*
*G',9-% *(1 *E 8+*98' ?*2(+%7 ' *6*&8& 42(+%7'*$ % &'(&)H *
0RdV_c_*%bcV`RWT]S*
-T]^SZ*GETTSH*
0RdV_c_*&c_gTU*
\h*%Wg\iXj*
&8'%F*!()%!%42&8+!. %% 5 % 5 !'&-!3)%!1%.3!3%-0 * . # 3* & . !# -% !. &3!/&,.3%5!!*.!3) % +% !4% . $ 3)+!%;/%93!#3!
#43*3,5%+!#2&1%!a>[[[!'%%36!!C2&1%!a>[[[!'%%3!#43%-.#3%!)&-*]&.3#4!1%.3!3%-0*.#3*&.!%42&8+!#-%!3&!2%!
*./4,5%5!*.!3)%!%? , *1# 4%. 3!1% .3!4% .$ 3) 6!
l!!()*+!*+!3)%!0#;*0,0!.,02%-!&'!4&.$!+8%%9!%42&8+!'&-!%*3)%-!O!&-!G!*./)!9*9%6!H&02*.#3*&.+!&'!4&.$!
+8%%9!^[+>!+3#.5#-5!^[+>!&-!ZF+!0#:!2%!,+%5>!2,3!3)%!0#.,'#/3,-%-!-%/&00%.5+!3)%!,+%!&'!4&.$!
+8%%9!^[+!8)%.%1%-!9&++*24%!2%/#,+%!3)%!,+%!&'!3)%!0#;*0,0!.,02%-!&'!+3#.5#-5!^[!#.5!ZF!%42&8+!
&.4:!0#:!-%+,43!*.!.,*+#./%!',-.#/%!&,3#$%+!5,%!3&!*.5*1*5,#4!*.+3#44#3*&.!+9%/*'*/+6!
ll!J&3!#994*/#24%!'&-!#43%-.#3%!3%-0*.#3*&.+6!
Venting