Greenheck ERT-52 Installation Manual

ASSEMBLY INSTRUCTIONS

STEP 1: Unpack and Inspect Parts

PART # 457157

Roof Curb and Duct Adapter

Model: ERT

Part Description Qty

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 657231 659328 659328 657212

Part Description Qty

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

ERT-52 ERT-58 ERT-64 ERT-74

P/N P/N P/N P/N

ERT-52

P/N P/N P/N P/N

Qty

ERT-58

Qty

ERT-64

Qty

ERT-74

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 —

Note: Hardware kit for the 12 in. high and 16 in. high roof curb are the same.

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

November 2007

37.5 in.

in.

40.438 in

3.063 in.

STEP 2: Assemble Main Curb

30.50 in

28.75 in.

21.50 in.

25.62 in.

28.125

in.

36.50 in.

21.62 in.

19.75

20.50 in.

14.25 in.

24.25 in.

39.50 in.

29.313 in

25.375 in

16.438 in

3.063 in.

40.438 in

in.

75 in.

®®®

Hardware Required: (24 or 32) 3/8-16 x 3/4 Serrated Flange Bolts (24 or 32) 3/8-16 x 3/4 Serrated Flange Nuts (4) Side Channels (2) End Channels (1) Center Channel (2) Supply Side Channels (for ERT-74 only)

Instructions: • See Main Curb Assembly for positioning the Side, Center, and End Channels.

• Align the holes and fasten as shown below.

Channel Lengths and Overall Curb Dimensions

Side

Length

ERT-52

ERT-58

ERT-64

ERT-74

75.25 65.50 65.50 154.50 65.50

88.00 74.75 74.75 180.00 74.75

4 @ 59.75

2 @ 71.25

All dimensions shown in inches.

End

Length

Center Length

L W

92.75 92.75 195.00 92.75

ERT-74

ERT-52 and ERT-58/64

End

Side and center channels fasten together, as shown.

End and side channels fasten together, as shown.

+ 4 hidden pages