Loren Cook RCG Installation Manual

RCG / RCGH / RCA

Galvanized and Aluminum Roof Curbs

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation
instructions for galvanized and aluminum roof curbs.
Hurricane roof curbs and lab exhaust roof curbs have
special instructions.

Cook roof curbs are designed for use with Cook
units. For uses other than the intended design, it is
responsibility of the engineer of record to determine
suitability of the roof curb.

All of the publications mentioned above can be obtained
from Loren Cook Company by phoning 417.869.6474,
extension 166; by FAX at 417.832.9431; or by e-mail at
[e-mail].

For information and instructions on special equipment,
contact Loren Cook Company at 417.869.6474.

Receiving and Inspection

Immediately upon receipt of a RCG / RCGH / RCA unit,
carefully inspect it for damage and shortage.

Record on the Delivery Receipt any visible sign of
damage.

Handling

Lift the roof curb by strap through the center.

Storage

If the unit is stored for any length of time prior to
installation, cover the curb to protect it from the elements.
This includes covering the insulation, attentuators if
applicable, and dampers. Curbs with liners need to be
covered, as the liner is not weatherproof.

Moisture can get trapped in the insulation and cause
mold.

When installing the roof curb, if the fan or gravity hood
is to be installed at a later time, cover the curb to protect
it from the elements. This includes covering the
insulation, attentuators if applicable, and dampers.
Curbs with liners need to be covered, as the liner is not
weatherproof.

Moisture can get trapped in the insulation and cause
mold.

Knockdown Curb Assembly Instructions:

1. Place knockdown curb pieces on a flat surface with
knockdown plates facing each other. Units with multiple
splits will be identified near the knockdown plates. Be
sure to match identification marks.

2. Secure knockdown plates together at each split
location with bolts and nuts in all holes provided in
knockdown plates. If curb comes with an angle brace,
install the brace with the uppermost bolt and nut on the
knockdown plates.

3. Caulk seams at all knockdown split locations.

(See back page for drawing)

Maintenance

This roof curb does not require maintenance under

normal use.

Installation

CAUTION
The attachment of roof mounted fans to the roof
curb as well as the attachment of roof curbs to the
building structure must exceed the structural
requirements based on the environmental loading
derived from the applicable building code for the
site. The local code official may require variations
from the recognized code based on local data. The
licensed engineer of record will be responsible for
prescribing the correct attachment based on
construction materials, code requirements and
environmental effects specific to the installation.

Attachment methods vary depending on the job
requirements and should be made per local code & / or local
conditions, per the engineer of record.

RCG / RCGH / RCA

Knockdown Curb Assembly

Limited Warranty

Loren Cook Company warrants that your Loren Cook fan was manufactured free of defects in materials and workmanship, to the extent stated herein. For a period of five (5) years after date of
shipment, we will replace any parts found to be defective without charge, except for shipping costs which will be paid by you. This warranty is granted only to the original purchaser placing the fan
in service. This warranty is void if the fan or any part thereof has been altered or modified from its original design or has been abused, misused, damaged or is in worn condition or if the fan has
been used other than for the uses described in the company manual. This warranty does not cover defects resulting from normal wear and tear. To make a warranty claim, noti fy Loren Cook
Company, General Offices, 2015 East Dale Street, Springfield, Missouri 65803-4637, explaining in writing, in detail, your complaint and referring to the specific model and serial numbers of your
fan. Upon receipt by Loren Cook Company of your written complaint, you will be notified, within thirty (30) days of our receipt of your complaint, in writing, as to the manner in whi ch your claim will
be handled. If you are entitled to warranty relief, a warranty adjustment will be completed within sixty (60) business days of the receipt of your written complaint by Loren Cook Company. This
warranty gives only the original purch aser placing the fan in service specifically the right. You may have other legal rights which vary from state to state.

Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474

lorencook.com

RCG / RCGH / RCA IOM - September 2010