P.O. Box 410
Schofield, WI 54476
Phone: 715.359.6171
www.greenheck.com

Product Specification Guide
High Plume Blower, Model Vektor-H, Direct Drive
Facility Service Subgroup: Division 23 HVAC (previously Division 15)

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Specifier Notes: This product specification guide is written according to the Construction Specifications Institute (CSI) Format.

This section must be carefully reviewed and edited by the Engineer to meet the requirements of the project and local building code.  Coordinate with other specification sections and the drawings.

Delete all unnecessary “Specifier Notes” when editing this section. 

Note to User: This document is subject to copyright protection and is proprietary to Greenheck Fan Corporation. However, Greenheck Fan Corporation authorizes the user a limited non-exclusive license to use this document or portions of it for the purpose of preparing written product specifications for the above CSI MasterFormat category. All information in this document as provided by Greenheck Fan Corporation is informational in nature and is provided without representation or warranty of any kind as to the user or any other party, including, without limitation, ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, OR NON-INFRINGEMENT. To the greatest extent permitted by applicable law, Greenheck Fan Corporation assumes no liability, and User assumes all liability and risk, for the use or results from the use of this document or the information contained herein, whether as modified by the user or not. Users should consult www.greenheck.com to verify that this document represents the most current version.

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1.	GENERAL

1.1	WORK INCLUDED

A.	High-Plume Laboratory Exhaust System, Model Vektor-H

1.2	RELATED WORK 

A.	All sections, drawing plans, specifications and contract documents.

1.3	REFERENCES

A.	ANSI/AMCA Standard 99-10, "Standards Handbook” 
B.	ANSI/AMCA Standard 204-05, "Balance Quality and Vibration Levels for Fans"
C.	ANSI/AMCA Standard 210-07, "Laboratory Methods of Testing Fans for Aerodynamic Performance Rating"
D.	AMCA Publication 211-05, "Certified Ratings Program – Product Rating Manual for Fan Air Performance"
E.	ANSI/AMCA Standard 300-08, "Reverberant Room Method for Sound Testing of Fans"
F.	AMCA Publication 311-05, "Certified Ratings Program – Product Rating Manual for Fan Sound Performance"
G.	AMBA Method of Evaluating Load Ratings of Bearings ANSI-11 (r1999)
H.	ANSI/AMCA Standard 500-D-12, "Laboratory Methods of Testing Dampers for Rating"
I.	ANSI/AMCA Standard 500-L-12, "Laboratory Methods of Testing Louvers for Rating"
J.	SMACNA - Medium Pressure Plenum Construction Standard
K.	ANSI/AIHA Z9.5-2012 – Laboratory Ventilation
L.	ASHRAE - Laboratory Design Guide
M.	IBC 2009 – International Building Code
N.	ICC-ES AC 156 – International Code Council Evaluation Services Acceptance Criteria 156   
O.	NFPA 96-14 "Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations"
P.	OSHA guideline 1910.212 – General requirements for Machine Guarding. (www.osha.gov)
Q.	OSHA guideline 1910.219 – General requirements for guarding safe use of mechanical power transmission apparatus.  (www.osha.gov)
R.	OSHA guideline 1926.300 – General requirements for safe operation and maintenance of hand and power tools. (www.osha.gov)
S.	UL/cUL 705, Power Ventilators

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Specifier Notes:

	Fans with Sure-Aire Flow Monitoring selected shall include the following.

1.	Flow monitoring station shall monitor the pressure difference between the fan inlet and the smallest diameter of the inlet cone.
2.	Volumetric flow to be calculated from empirically derived formulas based on testing by the fan manufacturer.
3.	Flow monitoring station shall not use air restricting flow devices that reduce fan performance or create additional fan sound.
4.	Two (2) equidistantly spaced sensor orifices to be drilled in the smallest diameter of the inlet cone venturi. Flow tubes from each venturi sensor shall be extended to a termination location mounted on the fan housing.
5.	High-pressure flow port(s) shall be mounted in low velocity fan inlet. Flow ports from the high-pressure sensor shall extend to a termination location mounted on the fan housing.
6.	Termination location shall include a low-pressure connection, a high-pressure connection and a listing of the empirically determined flow rate coefficient.
7.	Flow monitoring station shall accurately measure the pressure differential to within +/- 3%.
8.	Flow monitoring station to be installed by the fan manufacturer as part of the standard fan assembly.
9.	Flow monitoring station to be supplied with electronics package that includes pressure transmitter and LCD digital readout.
10.	Material:
•	Tubing: black polyethylene, UV resistant, chemically inert tubing, interior and exterior (standard), Temperature range: -100 - 175°F (-73 - 80°C)
•	Tube Fittings: Stainless steel compression fittings, interior. Brass compression fittings, exterior

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1.4	QUALITY ASSURANCE

A.	Performance ratings: Conform to ANSI/AMCA Standards 210 and 300. Fans must be tested in accordance with AMCA Publications 211 and 311 in an AMCA accredited laboratory and certified for air and sound performance. Fan shall be licensed to bear the AMCA ratings seal for air performance (AMCA 210) and sound performance (AMCA 300). Manufacturers that are not licensed to bear the AMCA 210 ratings seal must provide performance witness testing (at the manufacturer’s expense), per paragraph 1.4.D.
B.	Classification for Spark Resistant Construction shall conform to ANSI/AMCA Standard 99.
C.	Each fan shall be vibration tested before shipping, as an assembly, in accordance with ANSI/AMCA Standard 204. Each assembled fan shall be test run at the factory at the specified fan RPM and vibration signatures shall be taken on each bearing in three planes - horizontal, vertical, and axial. The maximum allowable fan vibration shall be less than 0.10 in. /sec peak velocity; filter-in reading as measured at the fan RPM. This report shall be provided at no charge to the customer upon request.
D.	Manufacturer’s that do not comply with paragraph 1.4.A must also provide, at the owner and engineer’s option and manufacturer’s expense, witness testing of fan discharge airflow, performed at an AMCA accredited laboratory, in accordance with AMCA 210. This test shall verify the critical and safety related performance of the high plume blower, as stated by the manufacturer.

1.5	SUBMITTALS

A.	Provide dimensional drawings and product data on each high-plume laboratory exhaust fan assembly.
B.	Provide fan curves for each fan at the specified operation point, with the flow, static pressure and horsepower clearly plotted.
C.	Provide nozzle velocity of exhaust fan, total exhaust flow, and discharge plume height at specified wind velocity.
D.	Strictly adhere to QUALITY ASSURANCE requirements, as stated in section 1.4 of this specification.

1.6	DELIVERY, STORAGE, AND HANDLING

A.	Deliver materials to site in manufacturer’s original, unopened containers and packaging, with labels clearly indicating manufacturer, material, products included, and location of installation.
B.	Store materials in a dry area indoor, protected from damage, and in accordance with manufacturer’s instructions. For long term storage, follow manufacturer’s Installation, Operation and Maintenance manual.
C.	Handle and lift fans in accordance with the manufacturer’s instructions. Protect materials and finishes during handling and installation to prevent damage. Follow all safety warnings posted by the manufacturer.

1.7	WARRANTY

A.	Submit, for Owner's acceptance, manufacturer's standard warranty document executed by authorized company official. Manufacturer's warranty is in addition to, and not a limitation of, other rights Owner may have under Contract Documents.
1.	The warranty of this equipment is to be free from defects in material and workmanship for a period of 12 months from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at the manufacturers’ option when returned to the manufacturer, transportation prepaid.
2.	Motor Warranty is warranted by the motor manufacturer for a period of one year. Should motors furnished prove defective during this period, they should be returned to the nearest authorized motor service station.

2. 	EQUIPMENT

2.1	GENERAL

A.	Base fan performance at standard conditions (density 0.075 Lb. /ft3 ).
B.	Fans selected shall be capable of accommodating static pressure and flow variations of +/-15% of scheduled values.
C.	Each fan shall be direct drive.
D.	Each fan to be equipped with 316 stainless steel lifting lugs for corrosion resistance.
E.	Fasteners exposed to corrosive exhaust shall be stainless steel.
F.	Fan assembly shall be designed for a minimum of 125 MPH wind loading, without the use of guy wires.

2.15 CORROSION RESISTANT COATING

A.	All steel fan and system components (fan, nozzle, windband and plenum) shall be corrosion resistant coated with LabCoat™, a two part electrostatically applied and baked, sustainable, corrosion-resistant coating system. Standard finish color to be RAL 7023, concrete grey.
All parts shall be cleaned and chemically prepared for coating using a multistage wash system which includes acid pickling to remove oxide, improving the coating bond to the substrate.
The first powder coat applied over the prepared surface shall be an epoxy primer. After application, the coating shall be heated to a gelatinous consistency (partial cure) at which time the second powder coat of polyester resin shall be electrostatically applied and then be cured simultaneously at a uniform temperature of 400°F (204°C).
The coating system shall not be less than a total thickness of 6 mils, shall not be affected by the UV component of sunlight (does not chalk), and have superior corrosion resistance to acid, alkali, and solvents. Coating system shall exceed 4000 hour ASTM B117 Salt Spray Resistance.
Note that 10-20 mil thick wet coating systems pollute the environment (air and water), and that these manually applied coatings are not uniform over the impeller surface and can cause fan imbalance and vibration.

2.2	FAN HOUSING AND OUTLET

A.	Fan housing to be aerodynamically designed with high-efficiency inlet, engineered to reduce incoming air turbulence.
B.	Fan housing shall be welded steel and meet specification section 2.15 for corrosion resistant coating. No uncoated metal fan parts shall be acceptable.
C.	Load bearing or structural fan components that are fabricated of polypropylene or fiberglass that have lower mechanical properties than steel, have rough interior surfaces in which corrosive, hazardous compounds can collect, and / or which chalk and structurally degrade due to the UV component of the sunlight shall not be acceptable.
D.	A high velocity conical discharge nozzle shall be supplied by the fan manufacturer and be designed to efficiently handle an outlet velocity of up to 6000 FPM (30.48 m/s). Discharge nozzles shall be steel with corrosion resistant coating or chemical resistant medium density polyethylene with UV inhibitors to prevent chalking and have smooth interior surfaces. Discharge stack caps or hinged covers, impeding exhaust flow shall not be permitted.
E.	Provide housing drain for removal of rain and condensation.
F.	Motor compartment shall be sealed from the contaminated airstream and have integral cooling vents to fan exterior housing to prevent heat build-up. 
G.	Housing shall have a bolted and gasketed access panel allowing for inspection of impeller.
H.	Impeller, inlet cone and motor shall be removable in a single cartridge from the exterior of the fan housing without removal of the fan housing from plenum or roof curb.

2.3	FAN IMPELLER

A.	Fan impeller shall be centrifugal, backward curved, with laminar blade geometry and non-stall characteristics. The impeller shall be electronically balanced both statically and dynamically per AMCA Standard 204.
B.	Fan impeller shall be manufactured of aluminum (AMCA type B spark resistant) and meet specification section 2.15 for corrosion resistant coating.
C.	Aluminum centrifugal impellers shall be coated with Hi Pro polyester resin.

2.4	FAN BYPASS AIR PLENUM

A.	For constant volume systems, the fan shall be connected directly to the exhaust duct without the need of a bypass air plenum. Fans mounted directly to roof curbs shall be provided with a damper tray located in the roof curb for mounting of the gravity isolation damper.
B.	For variable volume systems, a bypass air plenum shall be provided as shown on drawings. The plenum shall be equipped with a bypass air damper and intake air hood with bird screen for introducing outside air at roof level upstream of the fan.
C.	The plenum shall be constructed of fully welded steel, meet specification section 2.15 for corrosion resistant coating, and mount on roof curb as shown on the project drawings. Plenums that are fabricated of plastics or resins that are combustible and have mechanical properties less than steel shall not be acceptable.
D.	The bypass air plenum shall be mounted on factory fabricated roof curb provided by the fan manufacturer, as shown on the project drawings (see section 2.5)
E.	Fan designs that use inlet flexible connectors that can leak causing loss of lab exhaust shall not be accepted.
F.	Bypass air dampers shall be opposed-blade design, and coated with up to 4 mils of Hi-Pro polyester resin, electrostatically applied and baked.
G.	Fan isolation damper of parallel blade design, either gravity backdraft or two position actuated, fabricated of steel or aluminum and coated with minimum 4 mils of Hi-Pro polyester resin, electrostatically applied and baked, shall be provided as shown on the project documents.
H.	Blower / Plenum vibration isolation shall be limited to neoprene / cork vibration pads.

2.5 BYPASS AIR PLENUM CURB

A.	Exhaust system manufacturer shall supply a structural support curb for the plenum, of specified height, as shown on the drawings.
B.	Curb shall be fabricated of a minimum of 14 gauge of galvanized [corrosion resistant coated steel] and structurally reinforced.
C.	Curbs shall be insulated.
D.	When properly anchored to the roof structure, the standard curb / plenum / blower assembly shall withstand wind loads of up to 125 mph without additional structural support.

2.6	FAN MOTORS AND DISCONNECT

A.	Motors shall be premium efficiency, standard NEMA frame, 1800 or 3600 RPM, Totally Enclosed Fan Cooled (TEFC) with a 1.15 service factor on line (sinewave) frequency. Motor shall be labeled for use with a VFD with 10:1 VT and 1.0 service factor.
B.	Motor bearings shall be sealed for life and require no lubrication maintenance.
C.	Motor shall be equipped with internal shaft grounding ring protect motor bearings from the shaft voltages. 
D.	Motor bearings shall be sized for an L-10 life of no less than 100,000 hours in vertical shaft down application.
E.	A factory-mounted NEMA 3R [NEMA 4, NEMA 4X] disconnect switch shall be provided for each fan. 

3.	EXECUTION

3.1	EXAMINATION

A.	Examine areas to receive fans. Notify the Engineer of conditions that would adversely affect installation or subsequent utilization and maintenance of fans. Do not proceed with installation until unsatisfactory conditions are corrected.

3.2	INSTALLATION

A.	Install fans as indicated, with flexible electrical leads.
B.	Pipe housing drain to nearest drain.
C.	Install fans in accordance with manufacturer’s Installation, Operation and Maintenance manual.

4.	ACCEPTABLE MANUFACTURERS

A.	Greenheck Fan Corp, PO Box 410, Schofield WI 54476-0410, www.greenheck.com 
Model Vektor-H, Direct Drive, High Plume Laboratory Exhaust System.