American Dryer Corp. AD-385 - Manual (Page 20)

MULTIPLE DRYER (Common) VENTING
If it is not feasible to provide separate exhaust ducts for each dryer, ducts from individual
dryers may be channeled into a "common main duct." The individual ducts should enter the
bottom or side of the main duct at an angle not more than 45° in the direction of air flow and
should be spaced at least 28-1/2 inches apart. The main duct should be tapered, with the
diameter increasing before each individual duct (10-inch minimum) is added.
The main duct may be any shape so long as the minimum cross section is provided. The main
duct should be tapered with the diameter increasing before each individual 10-inch duct is added
(refer to Ulus. D below).
Illus. D.
MULTPLE DRYER VENTH6
WITH AH -A- OlAHETER EXHAUST COHHECTIOHS AT COMHOH DUCT
HO. OF DRYERS S 7 A s 3 2 i
"Rffomfuss--------------------
8 0 F H J L H R
JSSjumBBum _____________
C E a 1 K M 0 0
HQRIZOUTM.
HOTE A-
-1
• SHOULD HOT •
EXCEED X"
wall
J
M* iMMOJ
TOHXyOJAL tumblers
nmSR EXHAUST MUST ENTER MAH
EXHAUST DUCT AT A US* AMGLE
2*0 CLEARAHCE
J£RT£^
MOTE A -
L-y
H V.«v*
U.
* DU
t
HSPECWH
ODORS
MR
iSiSJ asTAHces
aermn oucrs
HPORTMT: no none TMN I ORTERS CAH K CIHeCTeO ro OW COMEW oucr I Y0ir I WITH A HOnaonrAi M
----------- ^ AW NO NDRE THAN 6 OTrim CAN B£ COteCTEO WITH A fiRTKAi RIM
NOTE /»; OPEHNO Husr BE TWO ffl NO€S LARGER THAN OUCT lALL THE WAY AROUNDL TW DUCT
---------- HUST BE CENTERED WITHM THS OPEHNG.
NOTE B: AD-3B5 2B VJ- WVE XSO CFH
M. aiowns
NAN2»»
B=400 F=324 J=256 N=164
C=22 G=20 K=18 0=14
D=324 H=256 L=210 P=80
E=20 1=18 M=16 Q=10
The maximum length of venting from the last dryer to where it exhausts...
Vertical venting run must not exceed 20 feet. This calculation compensates for the use of a
maximum of three (3) elbows including the two (2) elbows creating 180° (turned downward) outside
outlet.
IMPORTANT: No more than six (6) dryers maximum should be converted to one (1) main
common duct with a venical run.
Horizontal venting must not exceed 20 feet. This calculation compensates for the use of a
maximum of only one (1) elbow which is the outside outlet protection.
IMPORTANT: No more than eight (8) dryers maximum should be converted to one (1) main
common duct with a horizontal run.
16