G - direct drive, Gb - belt drive, Gb belt drive – Greenheck Model G User Manual
Page 5: G direct drive
5
Downblast Centrifugal Roof Exhaust Fans
G - Direct Drive
Model
Curb
Cap
Damper
Roof
Opening
*Approx.
Weight
G 060, 065, 070, 075
17
(432)
8
(203
)
10½
(267)
18
(8)
G 080, 085, 090, 095
17
(432)
10
(254)
12½
(267)
26
(12)
G 97, 98, 99
19
(483)
12
(305)
14½
(368)
57
(26)
G 103, 103 HP
19
(483)
12
(305)
14½
(368)
62
(28)
G 123
19
(483
)
12
(305)
14½
(368)
65
(30)
G 133
19
(483)
12
(305)
14½
(368)
66
(30)
G 143, 143 HP
22
(559)
16
(406)
18½
(470)
76
(35)
G 163, 163 HP
22
(559)
16
(406)
18½
(470)
80
(36)
G 183, 183 HP
30
(762)
18
(457)
20½
(521)
119
(54)
G 203, 203 HP
30
(762)
18
(457)
20½
(521)
130
(59)
G 223/243, 223/243 HP
34
(864)
24
(610)
26½
(673)
150
(68)
GB - Belt Drive
Model
Curb
Cap
Damper
Roof
Opening
*Approx.
Weight
GB 071, 081, 091
19
(483)
12
(305)
14½
(368)
58
(26)
GB 101, 101HP
19
(483)
12
(305)
14½
(368)
63
(29)
GB 121
19
(483)
12
(305)
14½
(368)
66
(30)
GB 131
19
(483)
12
(305)
14½
(368)
67
(30)
GB 141, 141HP
22
(559)
16
(406)
18½
(470)
83
(38)
GB 161, 161HP
22
(559)
16
(406)
18½
(470)
89
(40)
GB 180, 180HP
30
(762)
18
(457)
20½
(521)
125
(57)
GB 200, 200HP
30
(762)
18
(457)
20½
(521)
138
(63)
GB 220, 220HP,
240, 240HP
34
(864)
24
(610)
26½
(673)
158
(72)
GB 260
40
(1016)
30
(762)
32½
(826)
305
(138)
GB 300, 300HP
40
(1016)
30
(762)
32½
(826)
320
(145)
GB 330
46
(1168)
36
(914)
38½
(978)
385
(175)
GB 360, 360HP
46
(1168)
36
(914)
38½
(978)
403
(183)
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)
GB Belt Drive
Figure 6 - Typical Roof Mounting Installation
Disconnect
Recommended Duct
and Damper Size
Damper
8 or 12 in.
(203 or 305)
1¼ in.
(32)
Recommended Roof
Opening
1¼ in.
(32)
Wiring by Others
¾ in.
(19)
Dimensions shown in
inches (mm)
G Direct Drive
Figure 5 - Typical Roof Mounting Installation
Recommended Duct
and Damper Size
Damper
8 or 12 in.
(203 or 305)
1¼ in.
(32)
Recommended Roof
Opening
Dimensions shown in
inches (mm)
1¼ in.
(32)
Wiring by Others
Screws
Disconnect
¾ in.
(19)
• 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.
®