Mounting (cont'd), 2 roof curb (cont'd) – Reznor MAPS II Unit Installation Manual User Manual

Page 16

Form I-MAPS II, Page 16

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Assembly and Installation Instructions for Option CJ49 and CJ50,

Curbs for Horizontal Airflow

CAUTION: Before installing, recheck to be sure that the cor-

rect curb has been ordered and received. Be sure that the

curb selected matches the unit ordered. Verify the dimen-

sions of the curb received with the dimension table in FIG-

URE 7A.

Verify all the components and be sure that the curb is correct for the system

being installed. A short version of the installation instructions is included in this

manual. When assembling, follow the complete step-by-step illustrated instruc-

tions included with the curb.

FIGURE 7B - Exploded

View of Horizontal Airflow

Curb Assembly Showing

all Components

Instructions

Layout the four curb sides.

Join the corners using six of the

bolts and washer sets at each corner.

Be sure curb assembly is square.

Line up the holes and use the screws in the

hardware kit to attach the component parts in

the following order:

1 - Two bottom support braces

2 - Divider panel

3 - 3 Bottom panels (supply bottom 1 and 2 and

return bottom)

4 - Supply duct divider

5 - Return divider - 1

6 - Supply duct top panel

7 - Return divider - 2

8 - Return air cover (Install only if the application

does not require return air. If the application

includes return air, this cover is not used.)

Complete curb installation with the following field sup-

plied items: counter flashing, roofing felt, rigid insulation,

and cant strip. See

FIGURE 7C.

Before placing the unit on the curb, apply the 3/4" x

1-1/4" gasket to both the top surface of the curb rails and

the top surface of the perimeter of the duct opening(s),

being sure to make good butt joints at all corners.

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FIGURE 7C -

Curb Detail

Hardware Package

Qty Description

24 1/4-20 x 1/2 Hex Bolts with Nuts
24 1/4 Split Lock Washers
24 1/4 Flat Washers
88 10-16 x 1/2 Hex Screws

1 3/4" x 1-1/4" x 14' Gasket

5.2.2 Curbs for

Horizontal Airflow

(Option CJ50 and

Option CJ49) (cont'd)

5. Mounting (cont'd)

5.2 Roof Curb

(cont'd)