STEP 1: Unpack and Inspect Parts
Tools Recommended for Assembly
• Cordless
drill
•
5
/
16
in. Nut setter
•
9
/
16
in. Nut setter
• Open
or
Closed
9
/
16
in. wrench
• Awl — for hole alignment
PART # 457157
November 2006
Note: Hardware kit for the 12 in. high and 16 in. high roof curb are the same.
®
Roof Curb and Duct Adapter
Model: ERT
ASSEMBLY INSTRUCTIONS
Part Description
Qty
ERT-52
ERT-58
ERT-64
ERT-74
P/N
P/N
P/N
P/N
Roof Curb Kit
12 in. high
1
851518
851646
851646
851516
16 in. high
1
851519
851647
851647
851517
1. End Channel
12 in. high
2
657226
659321
659321
657209
16. in. high
2
657332
659336
659336
657216
2. Side Channel
12 in. high
4
657227
659322
659322
657210
16 in. high
4
657333
659337
659337
657217
3. Supply Side Channel 12 in. high
2
—
—
—
657211
16 in. high
2
—
—
—
657218
4. Center Channel
12 in. & 16 in. high
1
657228
659328
659328
657212
Part Description
Qty
ERT-52
Qty
ERT-58
Qty
ERT-64
Qty
ERT-74
P/N
P/N
P/N
P/N
Duct Adapter
(12 in. & 16 in. high curbs)
5. Curb Cross Channel
1
657228
2
659328
2
659328
2
657212
6. Duct Side Channel
3
657229
3
659329
3
659329
4
657213
7. Duct Cross Channel
1
657230
2
659330
2
659330
2
657214
Hardware Kit
(for curb & duct adapter)
1
851525
1
851523
1
851523
1
851523
3/8-16 x 3/4 Serrated Flange Bolts
24
415459
32
415459
32
415459
32
415459
3/8-16 x 3/4 Serrated Flange Nuts
24
415457
32
415457
32
415457
—
Screws, SMS (A) 12 x 0.625 (IHH)
20
415180
32
415180
32
415180
—
#457157 IOM ERT Curb
Rev. 3, November 2006
Copyright © 2006 Greenheck Fan Corp.
STEP 5: Final Roof Curb Assembly
ERT-74
Duct Adapter Assembly
Exhaust
Inlet
Supply
Discharge
2
2
1
4
1
5
6
7
6
STEP 5: Final Roof Curb Assembly
ERT-58 &
ERT-64
ERT-52
Duct Adapter Assembly
Duct Adapter Assembly
Exhaust
Inlet
Supply
Discharge
2
2
1
4
1
5
6
7
Exhaust
Inlet
Supply
Discharge
2
2
1
4
1
5
6
7
5
®