Product Specification Guide
Model VFC – Section 15700 - Vertical Fan Coil Units

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PART 1 – GENERAL
1.1	RELATED DOCUMENTS
A.	Drawings and general provisions of the contract, including general and supplementary conditions and Division 1 Specification Sections, apply to this section.

1.2	SUMMARY
A.	This section includes constant volume, vertical fan coil units for indoor installations.
B.	Related Sections include the following:
1.	Division 15 Section Vibration Isolators for vibration isolators not an integral part of vertical fan coil units specified in this section.

1.3	SUBMITTALS
A.	Product Data: For each type of vertical fan coil unit indicated, include the following:
1.	Complete fan performance curves with system operating conditions indicated shall be tested in an AMCA Registered Chamber.
2.	Fan sound power rating shall be tested in an AMCA Registered Chamber.
3.	Certified coil performance ratings with system operating conditions indicated.
4.	Motor ratings, electrical characteristics, and motor and fan accessories.
5.	Material gages and finishes.
B.	Field Quality Control Test Reports: From manufacturer.

1.4	QUALITY ASSURANCE
A.	Source Limitations: Obtain vertical fan coil units through one source from a single manufacturer.
B.	Product Options: Drawings indicate size, profiles, and dimensional requirements of vertical fan coil units and are based on the specific system indicated. Refer to Division 1 Section “Product Requirements.”
C.	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.
D.	NFPA Compliance: Vertical fan coil units and components shall be designed, fabricated, and installed in compliance with NFPA 90A. “Installation of Air Conditioning and Ventilating Systems.”
E.	Agency Certification: Vertical fan coil units and their components shall be factory tested in accordance with UL 1995 and shall be sent to ETL for testing.
F.	Comply with NFPA 70.

1.5	COORDINATION
A.	Coordinate size and location of structural steel support members.

1.6	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.	Filters: (One) <Insert number> set(s) for each vertical fan coil unit.
2.	Fan Belts: (One) <Insert number> set(s) for each vertical fan coil unit.

PART 2 – PRODUCTS
2.1	MANUFACTURERS
A.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the work include, but are not limited to, the following:
B.	Manufacturers: Subject to compliance with requirements, provide products by one of the following:
1.	Greenheck

2.2	MANUFACTURED UNITS
A.	Vertical fan coil units shall be factory assembled and consist of fans, motor and drive assembly, coils, filters, stainless steel condensate pans, and accessories.

2.3	CABINET
A.	Materials: Formed double wall insulated panels, fabricated to allow removal for access to internal parts and components, with joints between sections gasketed.
1.	Outside Casing: 18 gauge, galvanized steel (G90)
2.	Inside Casing: 18 gauge, galvanized steel (G90)
3.	Utility Lugs: For lifting unit and fastening to permanent structure, 8 gauge, galvanized steel (G90)
B.	Cabinet Insulation: Comply with NFPA 90A or NFPA 90B
1.	Materials: Fiber glass insulation
2.	Thickness: 1 inch (25 mm)
3.	Density: 1-1/2 (3) pounds per cubic foot.
4.	Thermal Conductivity (k-Value): 0.26 at 75°F (0.037 at 24°C) mean temperature.
5.	Fire-Hazard Classification: Maximum flame spread index of 25 and smoke developed index of 50, when tested according to ASTM C 411.
6.	Location and Application: Encased between outside and inside casing.
C.	Access Panels: Same materials and finishes as cabinet complete with threaded screw fasteners and gaskets. Inspection and access panels shall be sized and located to allow periodic maintenance and inspections. Provide access panels in the following locations:
1.	Fan Section: Inspection and access panels
2.	Coil Section: Inspection panel
3.	Filter Section: Inspection and access panels to allow periodic removal and installation of filters.
D.	Condensate Drain Pans: Formed sections of stainless steel sheet complying with requirements in ASHRAE 62. Fabricate pans with slopes in two planes to collect condensate from cooling coils (including coil piping connections and return bends) when units are operating at maximum catalogued face velocity across cooling coil.
1.	Double Wall Construction: Fill space between walls with 1 inch, 1-1/2 pound fiber glass insulation.
2.	Drain Connections: Main and auxiliary on same side of fan.
E.	Nameplate Mylar: Permanently affixed to cabinet. Include model, make, and serial number identification.

2.4	FAN SECTION
A.	Fan Section Construction: Belt driven centrifugal fans consisting of housing, wheel, fan shaft, bearings, motor drive assembly, and support structure and equipped with formed steel channel base for integral mounting of fan, motor, and casing panels. Mount fan with interior (neoprene) (spring) vibration isolation.
B.	Centrifugal Fan Housings: Formed and reinforced steel panels to make curved scroll housings with shaped cutoff, spun metal inlet bell, and access panels or doors to allow entry to internal parts and components.
1.	Panel Bracing: Steel angle or channel iron member supports for mounting and supporting fan scroll, wheel, motor, and accessories.
2.	Horizontal Flanged Split Housing: Bolted construction.
3.	Drive Frame: Rail mounted, heavy gauge steel to allow frame to slide for easy belt tensioning.
C.	Fan Assemblies: Statically and dynamically balanced and designed for continuous operation at maximum rated fan speed and motor horsepower.
D.	Forward Curved Fan Wheels: Galvanized steel and/or aluminum/painted steel construction with inlet flange, backplate, and shallow blades with inlet and tip curved forward in direction of airflow and mechanically secured to flange and backplate; cast-steel hub swaged to backplate and fastened to shaft with set screws.
E.	Shafts: Statically and dynamically balanced and designed for continuous operation at maximum rated fan speed and motor horsepower, with final alignment and belt adjustment made after installation.
1.	Turned, ground, and polished (hot rolled) (stainless) steel with keyway. Ship with a protective coating of lubricating oil.
2.	Designed to operate at no more than 70 percent of first critical speed at top of fan’s speed range.
F.	Pre-lubricated and Sealed Shaft Bearings: Self-aligning, pillow block type ball bearings.
1.	Ball-Bearing Rating Life: ABMA 9, L10 of 100,000 hours.
G.	Belt Drives: Factory mounted, with final alignment and belt adjustment made after installation and with 1.5 service factor based on fan motor.
1.	Pulleys: Mechanical cast iron with split, tapered bushing dynamically balanced at factory.
2.	Motor Pulleys: Adjustable pitch. Select pulley so pitch adjustment is at the middle of adjustment range at fan design conditions.
3.	Belts: Oil resistant, static free
4.	Motor Mount: Adjustable for belt tensioning
H.	Fan Section Source Quality Control:
1.	Factory test fan performance for flow rate, pressure, power, air density, rotation speed, and efficiency. Establish ratings according to AMCA 210, “Laboratory Methods of Testing Fans for Rating.”
I.	Inlet/Outlet duct collars: Galvanized collars at each inlet and outlet of the unit. Flexible duct 	connection isolating discharge of scroll from discharge of fan.

2.5	MOTORS
A.	General: Comply with requirements in Division 15 Section Motors, matched with fan load.
B.	Noise Rating: Quiet
C.	Maximum Ambient Temperature Rating: 120°F (40°C).
 
2.6	COILS
A.	Design and construct to facilitate removal and replacement of coil for maintenance and to ensure full airflow through coils.
B.	Water Coils: (Continuous circuit coil fabricated according to ARI 410) (Self-draining coil fabricated according to ARI 410).
1.	Piping Connections: Sweat
2.	Tubes: Copper, .016 inch tube thickness
3.	Fins: Aluminum, minimum of  .005 inch thickness
4.	Fin and Tube Joint: Mechanical bond
5.	Headers: Seamless copper tube with brazed joints
6.	Frames: Galvanized steel channel frame
7.	Ratings: Design tested and rated according to ARI 410
a.	Working Pressure Ratings: 250 psig (kPa), 300°F (°C)
8.	Source Quality Control: Test to 500 psig (kPa) underwater (2000 psig ultimate strength)
C.	Steam Coils: Distribution header coil fabricated according to ARI 410, with threaded steam supply and condensate connections.
1.	Connections: Steel MPT
2.	Tubes: Copper, .020 inch tube thickness
3.	Fins: Aluminum, 6 fins per inch
4.	Fin and Tube Joint: Mechanical bond
5.	Headers: Seamless copper tube with brazed joints
6.	Frames: 16 gauge, galvanized steel channel frame
7.	Ratings: Design tested and rated according to ARI 410
a.	Working Pressure Ratings: 100 psig, 366°F (°C)
8.	Source Quality Control: Test to 315 psig underwater
D.	Refrigerant Coils: Coil designed for use with R-410a refrigerant, fabricated according to ARI 410. Connected with soldered fittings
1.	Capacity Reduction: Circuit for (single) (double) control
2.	Tubes: Copper
3.	Fins: Aluminum, minimum of .005 inch thickness
4.	Fin and Tube Joint: Mechanical bond
5.	Suction and Distributor: Seamless copper tube with brazed joints
6.	Frames: 16 gauge, galvanized steel channel frame
7.	Ratings: Design tested and rated in accordance to UL (UL recognized)
a.	Working Pressure Rating: 250 psig
8. 	Source Quality Control: 500 psig underwater (2000 psig ultimate strength)
E.	Electrical Heating Coils, Controls, and Accessories: Comply with UL1995.
1.	Casing Assembly: Galvanized steel frame
2.	Heating Elements: Open coil resistance wire of 80 percent nickel and 2- percent chromium supported and insulated by floating ceramic bushings recessed into casing openings, fastened to supporting brackets, and mounted in galvanized steel frame.
3.	Over-Temperature Protection: Disk type, automatically resetting thermal cutout, safety device, serviceable through terminal box without removing heater from duct or unit.
	a.	Secondary Protection: Load carrying, manually resetting or manually 	replaceable, thermal cutouts, factory wired in series with each heater stage.

2.7	FILTER SECTION
A.	Filters: Comply with NFPA 90A
B.	Filter Section: Provide filter holding frames arranged for vertical orientations, with access panels on both sides of unit. Filters shall be removable from both sides.
C.	Extended Surface, Disposable Panel Filters: Factory fabricated, dry, extended surface filters with holding frames.
1.	Media: Fibrous material formed into deep-V shape.
2.	Media and Media Grid Frame: Non-Flammable cardboard.

PART 3 – EXECUATION
3.1	EXAMINATION
A.	Examine areas and conditions for compliance with requirements for installation tolerances and other conditions affecting performance.
B.	Examine roughing-in of steam, hydronic, direct expansion and condensate drainage piping systems and electrical services to verify actual locations of connections before installation.
C.	Proceed with installation only after unsatisfactory conditions have been corrected.

3.2	INSTALLATION
A.	Install vertical fan coil units with the following vibration control devices. Vibration control devices are specified in Division 15 Section “Mechanical Vibration and Seismic Controls.”
1.	Units with Internally Isolated Fans: Secure units to anchor bolts installed in concrete bases. Mounting units on a neoprene pad will help prevent possible vibration.
B.	Arrange installation of units to provide access space around vertical fan coil units for service and maintenance.

3.3	CONNECTIONS
A.	Piping installation requirements are specified in other Division 15 Sections. Drawings indicate general arrangement of piping, fittings, and specialties.
B.	Install piping adjacent to machine to allow service and maintenance.
C.	Connect piping to vertical fan coil units mounted on vibration isolators with flexible connectors.
D.	Connect condensate drain pans, to drainage piping. Extend to nearest equipment or floor drain. Construct deep trap at connection to drain pan and install cleanouts at changes in direction.
E.	Hot and Chilled Water Piping: Comply with applicable requirements in Division 15 Section “Hydronic Piping.” Connect to supply and return coil tappings with shutoff or balancing valve and union or flange at each connection.
F.	Steam and Condensate Piping: Comply with applicable requirements in Division 15 Section “Steam and Condensate Piping.” Connect to supply and return coil tappings with shutoff valve and union or flange at each connection.
G.	Refrigerant Piping: Comply with applicable requirements in Division 15 Section “Refrigerant Piping.” Connect to supply and return coil tappings with shutoff valve and union or flange at each connection.
H.	Duct installation and connection requirements are specified in other Division 15 Sections. Drawings indicate general arrangement of ducts and duct accessories.
I.	Electrical: Comply with applicable requirements in Division 16 Sections for power wiring, switches, and motor controls.
J.	Ground equipment according to Division 16 Section “Grounding and Bonding.”
K.	Tighten electrical connectors and terminals according to manufacturer’s published torque tightening values. If manufacturer’s torque values are not indicated, use those specified in UL 486A and UL 486B.

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 piping and electrical connections. Report results in writing. 
1.	Leak Test: After installation, fill water and steam coils with water and test coils and connections for leaks. Repair leaks and retest until no leaks exist.
2.	Charge refrigerant coils with refrigerant and test for leaks. Repair leaks and retest until no leaks exist.
3.	Fan Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation. Remove malfunctioning units, replace with new units, and retest.

3.5	STARTUP SERVICE
A.	Engage a factory authorized service representative to perform startup service.
B.	Final checks before startup. Perform the following:
1.	Verify that unit is secure on mountings and supporting devices; and that connections to piping, ducts, and electrical systems are complete. Verify that proper thermal overload protection is installed in motors, starters, and disconnect switches.
2.	Perform cleaning and adjusting specified in this section.
3.	Disconnect fan drive from motor, verify proper motor rotation direction, and verify free fan wheel rotation and smooth bearing operations. Reconnect fan drive system, align belts and install belt guards.
4.	Lubricate bearings, pulleys, belts, and other moving parts with factory recommended lubricants.
5.	Comb coil fins for parallel orientation.
6.	Install clean filters.
7.	Verify that manual and automatic volume control and fire and smoke dampers in connected duct systems are in fully open position.
C.	Starting procedures for vertical fan coil units include the following:
1.	Energize motor, verify proper operation of motor, drive system, and fan wheel. Adjust fan to indicated rpm.
2.	Measure and record motor electrical values for voltage and amperage.

Refer to Division 15 Section “Testing, Adjusting, and Balancing” for low profile vertical fan coil system testing, adjusting and balancing.

3.6	CLEANING
A.	Clean vertical fan coil units internally, on completion of installation, according to manufacturer’s written instructions. Clean fan interiors to remove foreign material and construction dirt and dust. Vacuum clean fan wheels, cabinets, and coils entering air face.
B.	After completing system installation and testing, adjusting, and balancing vertical fan coil and air distribution systems, clean filter housings and install new filters

3.7	DEMONSTRATION
A.	Engage a factory authorized service representative to train owner’s maintenance personnel to adjust, operate, and maintain vertical fan coil units. Refer to Division 1 Section Closeout Procedures and Demonstration and Training.

END OF SECTION 15700