Bryant Legacy 674D, Installation Instructions Manual

Page: 5 / 56

5
LARGE CURB
SMALL CURB
ROOF CURB DETAIL
Wood nailer*
Roofcurb*
Insulation
(field supplied)
*Provided with roofcurb
Cant strip
field supplied
Roofing material
field supplied
Flashing field
supplied
HVAC unit
base rails
Roofcurb
Sealing
Gasket
HVAC unit
basepan
Anchor screw
A09090
A09415
A09418
C
B
A
F
D
E
G
H
C
B
A
D
E
H
F
G
A09419
UNIT SIZE
CATALOG
NUMBER
A
IN. (mm)
B
IN. (mm)*
C
IN. (mm)
D
IN. (mm)
E
IN. (mm)
F
IN. (mm)
G
IN. (mm)
H
IN. (mm)
Small
CPRFCURB010A00 11 (279)
10 (254)
16 (406)
47.8
(1214)
32.4 (822)
2.7 (69)
30.6 (778)
46.1 (1170)
CPRFCURB011A00 14 (356)
Large
CPRFCURB012A00 11 (279)
14 (356)
43.9
(1116)
42.2 (1072)
CPRFCURB013A00 14 (356)
NOTES:
1. Roof curb must be set up for unit being installed.
2. Seal strip must be applied, as required, to unit being installed.
3. Roof curb is made of 16--gauge steel.
4. Attach ductwork to curb (flanges of duct rest on curb).
5. Insulated panels: 1--in. (25.4 mm) thick fiberglass 1 lb. density.
IMPORTANT : Do not install large base pan HYBRID HEAT
units onto the small base pan (common curb). The center of gravity
on a large base pan HYBRID HEAT unit could overhang the curb
causing an unsafe condition. Before installing any large base pan
unit onto the common curb, check the “Y” distance in the product
literature dimensional drawing to ensure that “Y” is greater than 14
in. (356 mm). Do not install any large base pan unit onto the
common curb with a “Y” dimension (center of gravity) less than 14
in. (356 mm).
Fig. 4 -- Roof Curb Dimensions
674D
--
--
A