2 roof curb, Mounting (cont'd), 1 downflow roof curb, option cj31 – Reznor MAPS II Unit Installation Manual User Manual

Page 12: Option cj31 roof curb p/n's

Form I-MAPS II, Page 12

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5.2.1 Downflow Roof

Curb, Option CJ31

All of these packaged systems are designed to be mounted on a roof or slab

using a manufacturer designed curb. Both downflow and horizontal curbs are

available.

When the unit is being placed on a roof, location depends on the roof struc-

ture.

Position the curb so that the air inlet of the unit will not be facing into the prevail-

ing wind. Always comply with the clearances in Paragraph 4.3. For condensate

drainage and proper operation, it is important that the installation be level.

Components

FIGURE 4 -

Roof Curb

Components

and Layout

All curbs include

corner hardware

as shown on page

14 and screws

for attaching duct

pieces.

Before installing, verify the appropriate P/N with table below. Follow the instruc-

tions on page 14.

Option CJ31 Roof

Curb P/N's

5. Mounting

(cont'd)

5.2 Roof Curb

The downflow roof curb designed for this system is a 14" high insulated curb.

The curb includes integral duct connections for supply air and optional return

air as illustrated in

FIGURE 4. See curb dimensions in FIGURE 5 and assem-

bly instructions on page 14.

Option CJ31 Components

Code

Components:

Qty

A & B

Curb End and Side Assemblies

2 ends; 2 sides

C & D

Parts to create the supply air duct through the curb. Pieces mate to the cabinet or heat

exchanger discharge and provide a duct flange for installing ductwork.

2 ends; 2 sides (may be same or different

depending on size of system)

E, F, G,

& H

Parts to create the optional return air duct through the curb. Pieces mate to the cabinet and

provide a duct flange for installing ductwork. If the system does not include optional return

air, these pieces may be installed but are not required and will serve no function.

4 pieces - a side, an end, a side angle,

and an end angle

*See Appendix, page 58, for cross-reference by Cabinet Size and Model Size.

Option CJ31 for

Models RDCA and

RDDA

Option CJ31 Roof Curb Pkg P/N's by Gas Heat Section Size

100

150

200

250

300

350 400 450 500 550 600 650 700

205660

205661

205662

205663

205664

208854

208855

208856

208857

Option

CJ31 for

Models

RECA and

REDA

Cabinet

Size *

Model

Size

Option CJ31 Roof

Curb Pkg P/N

All

205661

All

205664

All

208856

Option

CJ31 for

Cooling

Only

Models

RCA, RDA

Cabinet Size *

Model Sizes *

Pkg P/N

* All except Size 164

205661

Size 164

205662

* All

205664

176, 226, 230, 280

208854

292, 374, 346, 428, 446

208856