A
CU MANUAL
IOM-14
27 of 46
Feb 06 R4
Curbs may be broken down for shipping. Field assembly is required by the installing contractor.
Bolt all sections together at split joints using hardware provided. The installing contractor must
caulk and seal all joint and corner flashings. All flashings and braces that are provided must be
installed. DO NOT screw/penetrate joint, corner or adaptor flashings. Refer to assembly
instructions sent with roof curb.
SHIPPING MATERIALS
Remove shipping materials. Shipping materials may include, but are not limited to:
•
Protective covers over openings, inlets, condenser coils etc.
•
Protective covers over split sections if provided.
•
Tie-down bolts, straps and blocks on fan and compressor vibration isolators.
ASSEMBLY
Warning:
Assembly of split units requires bolting together the base frame of adjacent sections.
This may require personnel to work under the unit during assembly. Injury or death can
result from improper support or improper loading of the curb. Additional temporary
support shall be provided by the installer for the safety of personnel.
If the unit is split and shipped in sections, the sections must be field assembled. All sections are pre-drilled
for assembly. The hardware and gaskets are packed in one of the sections. Apply the gasket, align the
sections. The base frame must be bolted together first. Access below the unit for bolting of the base
frame must be provided. Once the base frame has been tightly fastened, loosely assemble all the bolts
and nuts, and then tighten. Caulk all split lines. Install split joint caps. The inlet hood is designed for field
installation. On outdoor units connect the hood to the support flange and attach with appropriate
fasteners. Connect all wiring on units that had been split for shipment.
The gasket material provided for the split is open cell foam. Open cell foam is light and compresses easily.
If the unit is mounted on a curb provided by Engineered Air there will also be gasket material for sealing
the curb. The gasket material for curbs is closed cell foam. It is more dense than open cell foam and does
not compress as easily.
ONLY USE THE OPEN CELL FOAM GASKET PROVIDED FOR SEALING THE SPLIT(S).
PIPING, ELECTRICAL OR CONTROL SERVICE CONNECTIONS
DO NOT install anything that will interfere with equipment access or the rating plate.
Curb mounted equipment is constructed with cabinet and floors designed to prevent water from entering
the building through the installed unit. When ordered, factory installed pipe chases and/or electrical
chases are built into the unit floor. Factory chases are provided with covers that need to be replaced and
sealed after piping and electrical connections are made.
IF UNIT IS CURB MOUNTED, THE FLOOR OF HAS BEEN MADE WATER-RESISTANT. DO NOT CUT OR DRILL
HOLES IN THE FLOOR OR USE PENETRATING FASTENERS.
Содержание EngA CU Series
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