HomeMy WebLinkAbout23 82 19 Fan Coil UnitsBEARDSLEY DESIGN ASSOCIATES
CORNELL - NCP FAN COIL UNITS
STANDARD SPECIFICATIONS 23 82 19 – PAGE 1 OF 5
MARCH 29, 2013
SECTION 238219 -- FAN COIL UNITS
PART 1 GENERAL
1.1 SUBMITTALS
A. Product Data: Provide rated capacities, operating characteristics, furnished
specialties, and accessories.
B. Shop Drawings: Detail equipment assemblies and indicate dimensions,
weights, loads, required clearances, method of field assembly, components,
and location and size of each field connection.
1. Wiring Diagrams: Power, signal, and control wiring.
C. Operation and Maintenance Data: For fan-coil units to include in emergency,
operation, and maintenance manuals. Maintenance schedules and repair
part lists for motors, coils, integral controls, and filters.
D. Warranty: Special warranty specified in this Section.
1.2 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as
defined in NFPA 70, Article 100, by a testing agency acceptable to authorities
having jurisdiction, and marked for intended use.
B. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 -
"Systems and Equipment" and Section 7 - "Construction and Startup."
C. ASHRAE/IESNA 90.1 Compliance: Applicable requirements in
ASHRAE/IESNA 90.1, Section 6 - "Heating, Ventilating, and Air-
Conditioning."
1.3 COORDINATION
A. Coordinate layout and installation of fan-coil units and suspension system
components with other construction that penetrates or is supported by
ceilings, including light fixtures, HVAC equipment, fire-suppression-system
components, cable trays, and partition assemblies.
1.4 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer
agrees to repair or replace components of condensing units that fail in
materials or workmanship within specified warranty period.
1. Failures include, but are not limited to, the following:
a. Compressor failure.
b. Condenser coil leak.
2. Warranty Period: Five years from date of Substantial Completion.
BEARDSLEY DESIGN ASSOCIATES
CORNELL - NCP FAN COIL UNITS
STANDARD SPECIFICATIONS 23 82 19 – PAGE 2 OF 5
MARCH 29, 2013
1.5 EXTRA MATERIALS
A. Furnish extra materials described below that match products installed and
that are packaged with protective covering for storage and identified with
labels describing contents.
1. Fan-Coil-Unit Filters: Furnish two spare filters for each filter installed.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. In other Part 2 articles where titles below introduce lists, the following
requirements apply to product selection:
B. In the Fan-Coil-Unit Schedule where titles below are column or row headings
that introduce lists, the following requirements apply to product selection:
1. Available Manufacturers: Subject to compliance with requirements,
manufacturers offering products that may be incorporated into the Work
include, but are not limited to, manufacturers specified.
2. Manufacturers: Subject to compliance with requirements, provide
products by one of the manufacturers specified.
3. Basis-of-Design Product: The design for each fan-coil unit is based on
the product named. Subject to compliance with requirements, provide
either the named product or a comparable product by one of the other
manufacturers specified.
2.2 FAN-COIL UNITS
A. Acceptable Manufacturers:
1. Carrier Corporation.
2. Dunham-Bush.
3. McQuay International.
4. Trane.
5. USA Coil & Air.
6. YORK International Corporation
7. ENVIRO-TEC
B. Description: Factory-packaged and -tested units rated according to ARI 440,
ASHRAE 33, and UL 1995.
C. Coil Section Insulation: 1-inch (25-mm) thick, coated glass fiber or foil-
covered, closed-cell foam complying with ASTM C 1071 and attached with
adhesive complying with ASTM C 916.
1. Fire-Hazard Classification: Insulation and adhesive shall have a
combined maximum flame-spread index of 25 and smoke-developed
index of 50 when tested according to ASTM E 84.
2. Airstream Surfaces: Surfaces in contact with the airstream shall comply
with requirements in ASHRAE 62.1.
BEARDSLEY DESIGN ASSOCIATES
CORNELL - NCP FAN COIL UNITS
STANDARD SPECIFICATIONS 23 82 19 – PAGE 3 OF 5
MARCH 29, 2013
D. Main and Auxiliary Drain Pans: Stainless steel. Fabricate pans and drain
connections to comply with ASHRAE 62.1.
E. Chassis: Galvanized steel where exposed to moisture.
F. Cabinet: Steel with baked-enamel finish in manufacturer's standard paint
color as selected by Architect.
1. Horizontal Unit Bottom Panels: Fastened to unit with cam fasteners and
hinge and attached with safety chain; with integral stamped discharge
grilles.
G. Filters: Minimum arrestance according to ASHRAE 52.1, and a minimum
efficiency reporting value (MERV) according to ASHRAE 52.2.
1. Pleated Cotton-Polyester Media: 90 percent arrestance and 7 MERV.
H. Hydronic Coils: Copper tube, with mechanically bonded aluminum fins
spaced no closer than 0.1 inch (2.5 mm), rated for a minimum working
pressure of 200 psig (1378 kPa) and a maximum entering-water temperature
of 220 deg F (104 deg C). Include manual air vent and drain valve.
I. Fan and Motor Board: Removable.
1. Fan: Forward curved, double width, centrifugal; directly connected to
motor. Thermoplastic or painted-steel wheels, and aluminum, painted-
steel, or galvanized-steel fan scrolls.
2. Motor: Permanently lubricated, multispeed; resiliently mounted on motor
board.
3. Wiring Termination: Connect motor to chassis wiring with plug
connection.
J. Factory, Hydronic Piping Package: ASTM B 88, Type L copper tube with
wrought-copper fittings and brazed joints. Label piping to indicate service,
inlet, and outlet.
1. Two-way, modulating control valve for chilled-water coil.
2. Hose Kits: Minimum 400-psig (2758-kPa) working pressure, and
operating temperatures from 33 to 211 deg F. Tag hose kits to
equipment designations.
a. Length: 24 inches (600 mm) maximum.
b. Minimum Diameter: Equal to fan-coil-unit connection size.
3. Two-Piece Ball Valves: Bronze body with full-port, chrome-plated bronze
ball; PTFE or TFE seats; and 600-psig (4140-kPa) minimum CWP rating
and blowout-proof stem.
4. Calibrated-Orifice Balancing Valves: Bronze body, ball type; 125-psig
(860-kPa) working pressure, 250-deg F maximum operating temperature;
with calibrated orifice or venturi, connections for portable differential
pressure meter with integral seals, threaded ends, and equipped with a
memory stop to retain set position.
5. Automatic Flow-Control Valve: Brass or ferrous-metal body; 300-psig
(2070-kPa) working pressure at 250 deg F , with removable, corrosion-
resistant, tamperproof, self-cleaning piston spring; factory set to maintain
BEARDSLEY DESIGN ASSOCIATES
CORNELL - NCP FAN COIL UNITS
STANDARD SPECIFICATIONS 23 82 19 – PAGE 4 OF 5
MARCH 29, 2013
constant indicated flow with plus or minus 10 percent over differential
pressure range of 2 to 80 psig (13.8 to 552 kPa).
6. Y-Pattern Hydronic Strainers: Cast-iron body (ASTM A 126, Class B);
125-psig (860-kPa) working pressure; with threaded connections, bolted
cover, perforated stainless-steel basket, and bottom drain connection.
Include minimum NPS 1/2 hose-end, full-port, ball-type blowdown valve
in drain connection.
7. Wrought-Copper Unions: ASME B16.22.
8. Risers: ASTM B 88, Type L copper pipe with hose and ball valve for
system flushing.
K. Basic Unit Controls:
1. Control voltage transformer.
2. Wall-mounting thermostat with the following features:
a. Cool-off switch.
b. Fan on-auto switch.
c. Fan-speed switch.
d. Degree F indication.
3. Wall-mounting temperature sensor.
L. Electrical Connection: Factory wire motors and controls for a single electrical
connection.
PART 3 EXECUTION
3.1 EXAMINATION
A. Examine areas to receive fan-coil units for compliance with requirements for
installation tolerances and other conditions affecting performance.
B. Examine roughing-in for piping and electrical connections to verify actual
locations before fan-coil-unit installation.
C. Proceed with installation only after unsatisfactory conditions have been
corrected.
3.2 INSTALLATION
A. Install fan-coil units level and plumb.
B. Install fan-coil units to comply with NFPA 90A.
C. Suspend fan-coil units from structure with elastomeric hangers. Provide
vibration isolator bushing or rubber in shear isolators.
D. Verify locations of thermostats, and other exposed control sensors with
Drawings and room details before installation. Install devices 60 inches
(1525 mm) above finished floor.
BEARDSLEY DESIGN ASSOCIATES
CORNELL - NCP FAN COIL UNITS
STANDARD SPECIFICATIONS 23 82 19 – PAGE 5 OF 5
MARCH 29, 2013
E. Install new filters in each fan-coil unit within two weeks after Substantial
Completion.
3.3 CONNECTIONS
A. Piping installation requirements are specified in other Division 23 Sections.
Drawings indicate general arrangement of piping, fittings, and specialties.
Specific connection requirements are as follows:
1. Install piping adjacent to machine to allow service and maintenance.
2. Connect piping to fan-coil-unit factory hydronic piping package. Install
piping package if shipped loose.
3. Connect condensate drain to indirect waste.
a. Install condensate trap of adequate depth to seal against the pressure
of fan. Install cleanouts in piping at changes of direction.
B. Connect wiring according to Division 26 Section "Low-Voltage Electrical
Power Conductors and Cables."
3.4 FIELD QUALITY CONTROL
A. Manufacturer's Field Service: Engage a factory-authorized service
representative to inspect field-assembled components and equipment
installation, including connections, and to assist in field testing. Report
results in writing.
B. Perform the following field tests and inspections and prepare test reports:
1. Operational Test: After electrical circuitry has been energized, start units
to confirm proper motor rotation and unit operation.
2. Operate electric heating elements through each stage to verify proper
operation and electrical connections.
3. Test and adjust controls and safety devices. Replace damaged and
malfunctioning controls and equipment.
C. Remove and replace malfunctioning units and retest as specified above.
3.5 ADJUSTING
A. Adjust initial temperature set points.
B. Occupancy Adjustments: When requested within 12 months of date of
Substantial Completion, provide on-site assistance in adjusting system to suit
actual occupied conditions. Provide up to two visits to Project during other
than normal occupancy hours for this purpose.
3.6 DEMONSTRATION
A. Engage a factory-authorized service representative to train Owner's
maintenance personnel to adjust, operate, and maintain fan-coil units.
END OF SECTION 238219