Page 1
Part Number:
CPRFCURB011B00
CPRFCURB013B00
SMALL PACKAGED PRODUCT (SPP)
ACCESSORY ROOFCURBS
Installation Instructions
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualied service personnel should install, repair, or service
air-conditioning equipment.
Untrained personnel can perform the basic maintenance functions of
replacing lters. All other operations should be performed by trained
service personnel. When working on air-conditioning equipment,
observe precautions in the literature, tags, and labels attached to the
unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have a re
extinguisher available. Read these instructions thoroughly and follow
all warnings or cautions included in literature and attached to the unit.
Recognize safety information. This is the safety-alert symbol .
When you see this symbol on the unit and in instructions or manuals,
be alert to the potential for personal injury. Understand these signal
words; DANGER, WARNING, and CAUTION. These words are
used with the safety-alert symbol. DANGER identies the most
serious hazards which will result in severe personal injury or death.
WARNING signies hazards which could result in personal injury or
death. CAUTION is used to identify unsafe practices which may result
in minor personal injury or product and property damage. NOTE is
used to highlight suggestions which will result in enhanced installation,
reliability, or operation.
Consult local building codes, the current editions of the National Fuel
Gas Code (NFGC) NFPA 54/ANSI 2223.1, and the National Electrical
Code (NEC) NFPA 70.
In Canada refer to the current editions of the National Standards of
Canada CAN/CSA-B149.l and .2 Natural Gas and Propane Installation
codes, and Canadian Electrical Code CSA C22.1
*IMPORTANT NOTES:
a. When installing a large cabinet on CPRFCURB011B00, the
provided hold down brackets must be used to keep the unit from
tipping. Brackets must be installed before unit is set. See Figure 4,
5 and 6.
b. The location of the center supports will vary depending on cabinet
size. See Fig. 3 and 4.
WARNING
!
UNIT FALLING HAZARD
Failure to follow this warning could result in personal injury or death.
Do not install the large cabinet Packaged Dual Fuel units onto
CPRFCURB011B00. The center of gravity could overhang the curb
causing an unsafe condition.
!
Table 1 - Package Contents
DESCRIPTION CPRFCURB011B00 CPRFCURB013B00
Curb Sides 2 2
Curb Ends 2 2
Deck Pan-Insulated 1 2
Long Support 1 1
Side Supports 2 2
Center Supports 2 2
Gasket 3/4-in. Thick x 16 ft. 1 1
Gasket 1/4-in. Thick x 16 ft. 1 1
Hold Down Bracket 2 ‒
Table 2 - Package Usage
CURB PART NUMBER UNIT
CPRFCURB011B00 small or large cabinet*
CPRFCURB013B00 large cabinet
*Hold down brackets only used when large cabinet is set on CPRFCURB011B00
INSTALLATION
WARNING
!
PERSONAL INJURY AND EQUIPMENT DAMAGE HAZARD
Failure to follow this warning could result in personal injury and/or
damage to equipment.
Do not leave roof opening uncovered. If installation is not completed
immediately after roof opening is cut and framed, provide an
adequate temporary cover for the roof opening.
1. Before installing the roof curb, ensure that curb is located so
that proper clearances are maintained. Ensure that roof structural
integrity is capable of supporting weight of rooftop unit. Adding
structural support to roof bracing may be necessary. Check unit
nameplate or units installation instructions for correct clearances.
2. Cut hole in roof for duct openings. (See Fig. 3 and 4.) It is not
necessary to cut out the entire area of the roof curb.
3. Frame the roof curb opening to provide adequate structural
support.
4. Assemble the roof curb. Bring together a curb side and a curb end.
Insert the tabs in the curb end into the slots on the curb side. Press
together until the pieces lock in place. Corners should be ush.
(See Fig. 1.)
5. Repeat for all four corners. If lifting the curb assembly, bend all
corner tabs over to the side. (See Fig. 1.)
6. Install the side supports on each end of the roof curb. (See Fig 2,
3 and 4.)
1
Page 2
IMPORTANT: Gasketing is critical for water integrity. Improperly
installed gasketing can result in air leaks and poor unit performance.
Roofcurb Part No. A
CPRFCURB011B00 28.75”
CPRFCURB013B00 40.31”
14”
7. Install the insulated deck pan(s) on the compressor side of the roof
curb.
8. Install the long support on the side opposite of the deck pan (See
Fig. 2, 3 and 4).
9. Install the center supports to frame the supply and return duct
openings. (See Fig. 2 and 3.)
IMPORTANT: The CPRFCURB011B00 is designed to t small and
large cabinet SPP units. The large cabinet unit will have signicant
overhang, and provided brackets must be installed before unit is set.
See Fig. 5 and 6.
The CPRFCURB013B00 is designed specically for the large cabinet
unit.
CPRFCURB011B00 Curb
Long Support
Side
Supports (2)
0.88”
(21)
Long Support
44.19”
A
Fig. 1 - Roof Curb Detail
44.19”
A
Fig. 2 - Roof Curb Detail
(Small Cabinet Curb Shown)
11.94”
(303)
Center
Support
14”
(356)
I.D.
SUPPLY
AIR
HVAC
13.56”
(344)
14”
(356)
I.D.
Dimensions in ( ) are in mm.
(406)
RETURN
AIR
16”
I.D.
Insulated
deck pan
CPCURB013B00 Curb
CPRFCURB013B00
UNIT
Fig. 4 - CPRFCURB011B00 Setup for
Large Cabinet or CPRFCURB013B00
10. Square up the roof curb and position over the duct openings cut
in Step 2. Level the curb by placing shims (thin pieces of wood
or metal) under the bottom ange of the curb. See Fig. 8 for unit
leveling tolerances.
11. Secure the curb in place by welding or screwing curb to the roof
(eld supplied equipment required).
12. When using the CPRFCURB011B00 curb with the large cabinet
install hold down brackets per Fig 5 and 6. Holes are pre-punched
on curb ange for locating purposes.
10”
(254)
I.D.
21.56”
(546)
10”
(254)
I.D.
1.31”
(33)
TYP.
Dimensions in ( ) are in mm.
SUPPLY
AIR
16”
(406)
I.D.
RETURN
AIR
Insulated
deck pan
Fig. 3 - CPRFCURB011B00 Curb
with Small Cabinet
HVAC
UNIT
CPRFCURB011B00
Curb
5.94”
Typ.
(151)
Provided Hold
Down Brackets
Fig. 5 - Hold Down Brackets For
CPRFCURB011B00 Curb used with Large
Cabinet Unit
2
Page 3
Large Unit
Screw Bracket
to Roofcurb
Screw Bracket
to Unit Base Rail
Hold Down Bracket
Provided with Curb
Gasket
CPRFCURB011B00
Curb
Fig. 6 - Bracket Attachment
13. Attach ductwork to the curb. Ductwork MUST be installed before
unit is set in place.
14. Weatherproof and ash the roof curb per applicable codes.
15. Install provided 1/4-in. thick closed-cell gasket seal on the outer/
top perimeter of the roof curb. (See Fig. 7.) When installed,
the weight of the unit will compress the gasket to seal the joint
between the unit and the roof curb. Gasket strips must t tightly
together and leave no gaps for leakage.
15. Install provided 3/4-in. thick gasket seal around the duct opening.
(See Fig. 7.)
3/4” Thick Gasket
1/4” Thick Gasket
Fig. 7 - Roof Curb Detail
!
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Do not slide unit into position when it is sitting on the curb. Curb
gasketing material may be damaged and leaks may result.
!
CAUTION
UNIT FALLING HAZARD
Failure to follow this warning could result in personal injury or death.
When installing the large cabinet unit on CPRFCURB011B00 curb
(see Fig 4), the provided hold down brackets must be installed on
the curb and attached to the unit to keep unit from tipping, See Fig
5 and 6.
Fig. 8 - Unit Leveling Tolerances
Copyright 2018 CAC/BDP ● 7310 W.Morris St. ● Indianapolis, IN 46231 Edition Date: 09/18 Catalog No. IIK-CPRFCURB-06
Manufacturer reserves the right to discontinue, or change at any time, specications or designs without notice and without incurring obligations Replaces: IIK-CPRFCURB-05
3
Loading...