15840-4
DUCTWORK AND DEVICES
a. Install ducts larger than 15 inches diameter and all square and
rectangular ducts passing through floors, walls, ceilings or roof through
prepared openings.
b. Provide one-inch clearance between the duct and the prepared opening,
or one-inch clearance between the insulation and the prepared opening
for insulated ducts, except at grilles, registers, and diffusers.
15840-3
DUCTWORK AND DEVICES
15840-2
DUCTWORK AND DEVICES
PART 2 - PRODUCTS
2.1 MATERIALS
A.
F.
All ducts, devices and accessories except PVC ducts and other ducts noted on
drawings shall be constructed to SMACNA 2-inch water gage (w.g.) classification
for both vacuum and pressure applications.
Ducts, devices and accessories shall be constructed of materials as noted below and
on the Drawings.
1. Galvanized Steel - Control Building
15840-1
SECTION 15840
DUCTWORK AND DEVICES
PART 1 - GENERAL
1.1
1.2
1.3
1.4
1.5
DESCRIPTION
A. Work Included: Provide and install all required sheet metal and ductwork, setting of
control dampers, louvers, flexible connections, and devices as shown on the
Drawings or required to make the installation complete in accordance with the intent
of the Drawings and Specifications.
15820-3
VENTILATION FANS
Provide flexible duct connections on inlet and outlet of fan when fans are ducted.
Install fans on roof or exterior wall with flashing to prevent water and weather from
entering building.
Performance testing and balancing shall be in accordance with specification Section
15907-Testing and Balancing Heating and Ventilating Systems.
END OF SECTION
13089K
15820-2
VENTILATION FANS
be controlled by either a potentiometer dial mounted at the motor or by a 0-10
VDC signal.
C. Roof Curbs:
l.
2.
3.
4.
5.
6.
Required for all roof mounted fans unless an integral part of roof structure and
so shown on the Architectural Drawings.
18 inches high.
Supplied with fan.
Prefabricated all welded aluminum construction structurally reinforced to
support fan.
1% inch thick rigid fiberglass insulation.
15820-1
SECTION 15820
VENTILATION FANS
PART 1 - GENERAL
1.1 DESCRIPTION
A. Work Included: Provide and install ventilation fans of the types and arrangement as
shown on the Drawings and as specified herein.
B. Related Work Specified Elsewhere "HVAC - General" is specified in this Division.
"Electrical-General" is specified in Section 16010.
1.2 QUALITY ASSURANCE
A. Standards
1.
Air Movement and Control Association
15815-2
AIR TERMINAL BOXES
(Electric)". All air terminal units shall be brand new products of the same
manufacturer.
B. Capacity and Performance: The maximum capacity of a single terminal unit shall
not exceed the capacity as indicated on the mechanical schedule.
C. Sound Power Levels: Acoustic performance of the air terminal units shall not
exceed levels as indicated on the mechanical schedule.
15815-1
SECTION 15815
AIR TERMINAL BOXES
PART 1 - GENERAL
1.1 DESCRIPTION
A. Work Included: Provide and install air terminal boxes of types, sizes and
configuration as shown on the Drawings and specified herein.
B. Related Work Specified Elsewhere: "HVAC - General" is specified in this Division.
"Electrical - General" is specified in Section 16000. For control sequence, refer to
Section 15609, “HVAC Instrumentation and Control (DDC).
15780-5
PACKAGED ROOFTOP AIR HANDLING UNITS
Division 15 Section "Duct Accessories."
3.2 FIELD QUALITY CONTROL
A.
B.
C.
Manufacturer's Field Service: Inspect, test, and adjust components, assemblies, and
equipment installations, including connections. Report results in writing.
Perform tests and inspections and prepare test reports.
Manufacturer's Field Service: Inspect components, assemblies, and equipment
