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

Product Specification Guide
Addendum Specification, Model Vektor-MD, MH or MS, Vektor Energy Recovery System
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.

This section is an addendum to the base model specification for laboratory exhaust systems that will include an energy recover coil loop system. 

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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2. 	EQUIPMENT (Continued)

2.7 ENERGY RECOVERY COIL PLENUM

A.	The energy recovery coil plenum shall be provided as shown on drawings.
B.	ERS Cabinet Sizes 5, 8, 15
1.	The coil plenum casing shall be secured to and fully supported by fan bypass air plenum.
2.	Plenum construction consists of bolted, double wall insulated panels for walls, floor, and roof. Construction shall be specifically designed for outdoor installation.
3.	Panels shall be two-inch double-wall, 22 gauge and polyester coated galvanized outer and inner walls. Plenum insulation shall be no less than 2 Lb. /ft3, two-inch thick foam in place polyurethane for additional structural rigidity. Panels shall be individually removable.
4.	Plenum roof panels shall be pitched away from fan bypass air plenum. Panel edges shall extend beyond the edge of the plenum casing to ensure water drainage.
5.	Fasteners exposed to corrosive exhaust shall be zinc plated.
6.	Filter racks shall be coated steel. Filters will be mounted for side access and are sized for a maximum face velocity of 500 ft./min. Filter efficiency shall be two inch - MERV 8 [two inch - MERV 13] as specified.
7.	Courtesy drain shall be provided under coil.

C.	ERS Cabinet Sizes 20, 30, 40, 60
1.	The plenum casing deflection shall not exceed L/250 at the design total static pressure (where L is the longest panel span on the unit).   
2.	Plenum construction consists of an all-welded structural steel base, a stainless steel tube and double wall insulated panels for walls, floor, interior partitions and roof. Construction shall be specifically designed for outdoor installation.
3.	Plenum unit base shall be constructed of welded structural steel with removable lifting lugs. Base shall be coated with corrosion resistant grey urethane modified enamel.
4.	Panels shall be two-inch double-wall, 18-gauge polyester coated galvanized outer walls and 22-gauge, 304 stainless steel inner walls. Plenum insulation shall be no less than 2 Lb. /ft3, two-inch thick foam in place polyurethane for additional structural rigidity. Panels shall be individually removable. Plenum floor shall be insulated with foam in place fiberglass insulation.
5.	Plenum roof panels shall be a standing seam assembly fabricated of corrosion resistant 18-gauge corrosion resistant polyester coated pre-treated galvanized and sloped. Panel edges shall extend beyond the edge of the plenum casing to ensure water drainage.
6.	Fasteners exposed to corrosive exhaust shall be stainless steel.
7.	Insulated double wall access doors, hinged and gasketed with tooled-entry handles shall be provided for access to any plenum areas requiring routine maintenance, both upstream and downstream of coil and filters, as shown on the project drawings.
8.	A filter section shall be provided at the air inlet of the energy recovery coil plenum. Filter racks shall be 304 stainless steel. Filters will be mounted for side access and are sized for a maximum face velocity of 500 ft./min. Filter efficiency shall be two inch - MERV 8 [four inch - MERV 13] as specified.
9.	Drain pan shall be 18ga, 304 stainless steel with raised coil supports.
10.	Plenums with optional external mounted coil connections are sealed to insure low-air leakage of the negatively pressurized plenum.

2.8 ENERGY RECOVERY COIL

A.	An AHRI-410 rated energy recovery coil(s) shall be provided within the energy recovery coil plenum, performance parameters as specified in the schedule.
B.	The coil shall be constructed of a seamless copper tube primary surface with a wall thickness of 0.025 inch and an aluminum plate fin sine-wave surface with a thickness of 0.008 inch.
C.	The coil shall be provided with copper headers and MPT carbon steel coil connections. 
D.	ERS Cabinet Sizes 5, 8, 15
1.	The coil casing shall be constructed of 16 ga. galvanized steel.
2.	The coil and frame shall be corrosion resistant eCoated with epoxy.
E.	ERS Cabinet Sizes 20, 30, 40, 60
1.	The coil casing shall be constructed of 304 stainless steel.
2.	The coil shall be corrosion resistant coated with water-based coating including anti-microcrobial properties with no off-gas. 
F.	Each coil is water immersion tested to 450 PSI prior to shipment.