Greenheck ERH-20 Installation Manual

Models: ERH-20, 45, 55, & 90

ASSEMBLY INSTRUCTIONS

STEP 1: Unpack and Inspect Parts

PART # 463405

Roof Curb and Duct Adapter

Part Description Qty

Roof Curb Kit

12 in. high with Indirect Gas 1 852129 852133 852143 852153

12 in. high without Indirect Gas 1 852130 852134 852144 852154

16 in. high with Indirect Gas 1 852131 852135 852145 852155

16 in. high without Indirect Gas 1 852132 852136 852146 852156

1. End Channel 12 in. high 2 705959 705557 705769 705943

16. in. high 2 705965 705564 705914 705951

2. Side Channel 12 in. high 4 706903 706942 706978 706990

16 in. high 4 706904 706943 706979 706991

3. Center Channel 12 in. & 16 in. high 1 705964 705558 705771 705949

Duct Adapter (12 in. & 16 in. high curbs)

4. Curb End Support Channel 1 705963 705559 705772 705948

5. Curb Center Support Channel 1 705962 705560 705773 705947

6. Duct Adapter with Indirect Gas Heat 1 705961 705561 705915 705945

7. Duct Adapter without Indirect Gas Heat 1 705960 705562 705774 705946

ERH-20 ERH-45 ERH-55 ERH-90

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

Hardware Kit (for curb & duct adapter) 1 852087 852087 852087 852087

/8-16 x 3/4 Serrated Flange Bolts

/8-16 x 3/4 Serrated Flange Nuts

Screws, SMS (A) 12 x 0.625 (IHH) 15 415180 415180 415180s 415180

26 415459 415459 415459 415459

26 415457 415457 415457 415457

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

• Awl — for hole alignment

16 in. wrench

October 2007

STEP 2: Assemble Main Curb

Hardware Required: (18) 3/8-16 x 3/4 Serrated Flange Bolts [(24) for 16 in. curb] (18) 3/8-16 x 3/4 Serrated Flange Nuts [(24) for 16 in. curb]

(4) Side Channels (2) End Channels (1) Center Channel

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

• Align the holes and fasten as shown.

Channel Lengths and Overall Curb Dimensions

Side

Length

ERH-20 34.50 51.00 51.00 73.00 51.00

ERH-45 38.25 60.63 60.63 80.50 60.63

ERH-55 44.88 71.50 71.50 93.75 71.50

ERH-90 51.00 90.75 90.75 106.00 90.75

All dimensions in inches.

End

Length

Center Length

L W

Main Curb Assembly

The center support for an ERH-20 curb will be

recessed approximately 2 inches from

the top. Because the 12 and 16-inch

curb model use the same center

support, expect a 4 inch

gap under the center

support of the

16 inch curb.

Side and center channels

fasten together, as shown.

End and side channels

fasten together, as shown.

End

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