Greenheck ERCH-20 Installation, Operation And Maintenance Manual page 63

G Direct Drive
Figure 5 - Typical Roof Mounting Installation
Screws
¾ in.
(19)
Wiring by Others
Damper
Recommended Duct
1¼ in.
and Damper Size
(32)
Recommended Roof
Opening
Model Curb Cap
G 060, 065, 070, 075 17 (432)
G 080, 085, 090, 095 17 (432)
G 097, 098, 099 19 (483)
G 103, 103 HP 19 (483)
G 123 19 (483)
G 133 19 (483)
G 143, 143 HP 22 (559)
G 163 22 (559)
G 183 30 (762)
G 203 30 (762)
• All dimensions are in inches (millimeters).
* Approximate weight shown in pounds (kilograms) is the largest
cataloged Open Drip Proof motor.
• The roof curb should be 1½ in. (38 mm) less than the curb cap to
allow for roofing and flashing.
®
Disconnect
8 or 12 in.
(203 or 305)
1¼ in.
(32)
Roof *Approx.
Damper
Opening Weight
8 (203) 10½ (267) 18 (8)
10 (254) 12½ (318) 26 (12)
12 (305) 14½ (368) 57 (26)
12 (305) 14½ (368) 62 (28)
12 (305) 14½ (368) 65 (30)
12 (305) 14½ (368) 66 (30)
16 (406) 18½ (470) 76 (35)
16 (406) 18½ (470) 80 (36)
18 (457) 20½ (521) 119 (54)
18 (457) 20½ (521) 130 (59)
GB Belt Drive
Figure 6 - Typical Roof Mounting Installation
Disconnect
¾ in.
(19)
Wiring by Others
Damper
Recommended Duct
1¼ in.
and Damper Size
(32)
Recommended Roof
Dimensions shown in
inches (mm)
Model Curb Cap
GB 071, 081, 091 19 (483)
GB 101, 101HP 19 (483)
GB 121 19 (483)
GB 131 19 (483)
GB 141, 141HP 22 (559)
GB 161, 161HP 22 (559)
GB 180, 180HP 30 (762)
GB 200, 200HP 30 (762)
GB 220, 220HP,
34 (864)
240, 240HP
GB 260 40 (1016) 30 (762)
GB 300, 300HP 40 (1016) 30 (762)
GB 330 46 (1168) 36 (914)
GB 360, 360HP 46 (1168) 36 (914)
GB 420 52 (1321) 42 (1067) 44½ (1130) 495 (225)
GB 480 52 (1321) 48 (1219) 50½ (1283) 623 (283)
GB 500 64 (1626) 54 (1372) 56½ (1435) 687 (312)
GB 540 64 (1626) 54 (1372) 56½ (1435) 748 (339)
• All dimensions are in inches (millimeters).
* Approximate weight shown in pounds (kilograms) is the largest
cataloged Open Drip Proof motor.
• The roof curb should be 1½ in. (38 mm) less than the curb cap to
allow for roofing and flashing.
Downblast Centrifugal Roof Exhaust
8 or 12 in.
(203 or 305)
1¼ in.
(32)
Opening
Roof *Approx.
Damper
Opening Weight
12 (305) 14½ (368) 58 (26)
12 (305) 14½ (368) 63 (29)
12 (305) 14½ (368) 66 (30)
12 (305) 14½ (368) 67 (30)
16 (406) 18½ (470) 83 (38)
16 (406) 18½ (470) 89 (40)
18 (457) 20½ (521) 125 (57)
18 (457) 20½ (521) 138 (63)
24 (610) 26½ (673) 158 (72)
32½ (826) 305 (138)
32½ (826) 320 (145)
38½ (978) 385 (175)
38½ (978) 403 (183)
5