Ductwork Connections - Trane GRAA Installation Manual

Figure 17 - Return Air Ductwork Mounting Bracket Assembly
1 Roof Mounting Angle
2 Curb End Rail Channel
Screw— #10 x 5/8" LG. Pan Hd.
3
Type "AB" (8) Req'd.
4 Fasteners by Others ("B") Req'd
Figure 18 - Supply Air Ductwork Mounting Bracket Assembly
1 Curb Cross Brace Channel
2 Curb Side Rail Channel
3 Curb End Rail Channel
Screw— #10 x 5/8" LG. Pan
4
Hd. Type "AB" (8) Req'd.
14

Ductwork Connections

RA* Capacity
18-7/8
C, E 10 thru 40
(479)
19-3/8
C, E 50 thru 80
(492)
J 12 18-7/8
L 50 thru 80 (479)
19-1/8
J 20 thru 40
(486)
J 50 thru 80 19-1/4
L 10 thru 40 (489)
Notes:
RA* = Rooftop Arrangement
+ Dimensions are in inches.
(Dimensions in parenthesis are in
millimeters.)
1 lb. = 0.453 kg
NA = Not Applicable
GRAA-IN-1
A+