Product Specification Guide
Greenheck Model ERVe –– Energy Wheel Air-to-Air Energy Recovery Ventilator
For Outdoor Installation
CSI MasterFormat Category 23 XX 
(Greenheck suggests the use of category 23 72 13)

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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.

Specifier notes are to be in red font (see below):

Specifier Notes: This product specification guide is written in accordance to the Construction Specifications Institute (CSI) Format - 2004 Edition.

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.
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1.	GENERAL
1.1	SUMMARY
A.	This section includes Energy Wheel Air-to-Air Energy Recovery Ventilators for [[indoor] [outdoor]] installation. If the unit is intended for installation on a concrete slab, verify design requirements and construction responsibility for the slab. 
B.	Related sections include the following:
1.	Section 22 00 00: Scope of Work
2.	Section 22 01 00: General Provisions
3.	Section 22 07 00: Insulation
4.	Section 22 10 00: Plumbing
5.	Section 23 09 00: Controls and Instrumentation
6.	Section 23 00 00: Electrical
Include any other applicable specification divisions

1.2	SUBMITTALS (This section should include all data needed by A/E to verify suitability of product for each application. As a minimum, it should include CAPS data and IOM).
A. 	Product Data: For each type or model include the following:
1.	Complete fan performance curves for both the supply air and exhaust air, with system operating conditions indicated, as tested in an AMCA Certified Chamber.
2.	Energy wheel performance data for both summer and winter operation.
3.	Motor ratings, electrical characteristics, motor, and fan accessories.
4.	Combined efficiency data per ARI Guideline V-2003 for each model. Data shall include RER, COP, Unitary Net Cooling, Unitary EER and CEF.
5.	Material types and gauges of all component pieces and assemblies.
6.	Dimensioned drawings for each type of installation, showing isometric and plan views, to include location of attached ductwork and service clearance requirements.
7.	Estimated gross weight of each installed unit.
8.	Installation, Operating and Maintenance manual (IOM) for each model.
9.	[Remote Control Panel description to include all functions.] 
10.	[Color chart including a palette of available standard paint finishes.]

1.3	QUALITY ASSURANCE
A.	Source Limitations: Obtain unit with all appurtenant components or accessories from a single manufacturer.
B.	For the actual fabrication, installation, and testing of work under this section, use only thoroughly trained and experienced workers completely familiar with the items required and with the manufacturer's current recommended methods of installation.
C.	Product Options: Drawings must indicate size, profiles and dimensional requirements of Energy Recovery Units and are to be based on the specific system indicated. Refer to Division 1 Section “Product Requirements”.
D.	Certifications:
1.	Entire unit shall be ETL Certified per U.L. 1995 and bear an ETL sticker.
2.	Energy wheel performance shall be AHRI Certified per Standard 1060.

1.4	COORDINATION	
A.	Coordinate size and location of all building penetrations required for installation of each unit and associated plumbing and electrical systems.
B.	Coordinate sequencing of construction of associated HVAC, electrical supply [roofing contractor].

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.	Filters: [(Insert quantity) set(s) of [MERV 8] or [MERV 13] disposable filters for each unit]. 
2.	One spare set of fan belts.
3.	One spare energy wheel belt.

2.	PRODUCTS
2.1 MANUFACTURERS
A.	Available Manufacturers: Subject to compliance with specifications contained within this document, manufacturers offering products that may be incorporated into the work include, but are not limited to:
1. Greenheck 

2.2	MANUFACTURED UNITS Indicate major components that must be included as part of the unit.
A.	Unit shall be fully assembled at the factory and consist of an insulated metal cabinet, downturned outdoor air intake weatherhood with metal mesh filters, energy wheel, [motorized intake damper], [motorized exhaust damper], [sensors], [curb assembly], [service receptacle], [frost control], [electric preheater], filter assembly for intake and exhaust air, supply air blower assembly, exhaust air blower assembly and an electrical control center. All specified components and internal accessories factory installed and tested and prepared for single-point high voltage connection. 

2.3 CABINET 
A.	Materials: Formed double wall insulated metal cabinet, fabricated to permit access to internal components for maintenance. 
1.	Outside casing: 18 gauge, galvanized (G90) steel meeting ASTM A653 for components that do not receive a painted finish. Corrosion rates can vary greatly depending on environmental factors, yet it is common acceptance that the life of zinc is a linear function of the coating mass. To obtain a higher life expectancy for an application, the user should utilize twice the coating mass. Ex. A G90 coating mass will exhibit approximately 150% longer life than the G30 coating. [Unit’s exterior shall be supplied from the manufacturer using G60 galvaneal steel with proprietary pre-painted material in the following finish color; Concrete Gray-RAL 70023. This has been subjected to a salt spray test per ASTM-B117 and evaluated using ASTM-D714 and ASTM-D610 showing no observable signs of rust or blistering until reaching 2,500 hours.] This is Greenheck’s PermatectorTM option. [Unit’s exterior shall be supplied from the manufacturer using G60 galvaneal steel with a high performance proprietary coating that has been subjected to a salt spray test per ASTM-B117 and evaluated using ASTM-D714 and ASTM-D610 showing no observable signs of rust or blistering until reaching 5,000 hours.] Greenheck’s high performance coating (Hi-Pro Poly) is available in seven standard colors with a match color chip option.]
2.	Internal assemblies: [18 gauge, galvanized (G90) steel] except for motor supports which shall be minimum14 gauge galvanized (G90) steel.
B.	Access doors shall be hinged.
C.	[Shall have factory-installed duct flanges on all duct openings.]
D.	Cabinet Insulation: Comply with NFPA 90A and NFPA 90B and erosion requirements of UL 181.
1.	Materials: Fiberglass insulation. If insulation other than fiberglass is used, it must 	also meet the Fire Hazard Classification shown below.
a.	Thickness: 1 inch (25 mm)
b.	Fire Hazard Classification: Maximum flame spread of 25 and smoke developed of 50, when tested in accordance with ASTM C 411.
c.	Insulation shall be of semi-rigid type and installed between inner and outer shells of all cabinet exterior components.
E.	Energy wheel: Energy wheel shall be of total enthalpy, rotary air-to-air type and shall be an element of a removable energy wheel cassette. The cassette shall consist of a galvanized steel framework (designed to produce laminar air flow through the wheel), an energy wheel as specified and a motor and drive assembly. The cassette shall incorporate a pre-tensioned drive belt. Note to A/E: Various energy wheel manufacturers are known to build non-segmented wheels. Segmented wheels are known to provide substantial time and labor-saving benefits over the entire life of the energy wheel. The wheel media shall be a polymer film matrix in a stainless-steel framework and be comprised of individual segments that are removable for servicing. Non-segmented energy wheels are not acceptable. Silica gel desiccant shall be permanently bonded to the polymer film and shall be designed and constructed to permit cleaning and servicing. The energy wheel is to have a five-year warranty. Performance criteria are to be as specified in AHRI Standard 1060, complying with the Combined Efficiency data in the submittal.
F.	Supply Air and Exhaust Air blower assemblies: Blower assemblies consist of an electric motor as specified by A/E and a belt driven blower. Assembly shall be mounted on heavy gauge galvanized rails and further mounted on 1.125-inch-thick neoprene vibration isolators. 
G.	Control panel/connections: Energy Recovery Ventilator shall have an electrical control center where all high and low voltage connections are made. Control center shall be constructed to permit single-point high voltage power supply connections
H.	Frost control: [None] [Timed Exhaust] [Modulating Wheel] [electric preheater].
I.	[Timed exhaust shall be provided for frost control of the energy wheel. Control system shall include an outdoor air thermostat and pressure sensor on the wheel assembly to initiate frost control sequence]. [Modulating frost control. Control system shall include an outdoor air thermostat and pressure sensor on the wheel assembly to initiate frost control sequence]. [Electric preheater shall be provided for frost control of the energy wheel. Preheater assembly shall include a thermostat and pressure sensor on the wheel assembly to initiate frost control sequence. Preheater shall comply with UL 1996 and be constructed on a galvanized steel frame]. (See Frost Control Application in IOM).
J.	Economizer Control: [None] [Stop Wheel] [Modulating Wheel] [VFD Signal by Others] [BMS Control]
K.	Motorized Dampers: Motorized dampers of [low leakage] [insulated low leakage] type and leakage rate of 3 CFM/ft2 @ 1 in. wg shall be factory installed. 
L.	[Sensors are considered to be part of various optional operational modes or device controllers and are to be factory supplied and installed as specified by the A/E]. See IOM/Sensors Installed by Factory
M.	[Curb Assembly: Greenheck recommends the use of an engineered curb assembly for outdoor installations. The curb assembly provides full perimeter support of the unit and ensures proper flashing and insulation of all roof penetrations. A curb assembly made of 18-gauge galvanized steel shall be provided by the factory for assembly and installation as part of this division. The curb assembly shall provide perimeter support of the entire unit. Curb assembly shall enclose the underside of the unit and shall be sized to fit into a recess in the bottom of the unit. Contractor shall be responsible for coordinating with roofing contractor to ensure curb unit is properly flashed to provide protection against weather/moisture penetration. Contractor shall provide and install appropriate insulation for the curb assembly].
N.	[Service receptacle: 120 VAC GFCI service outlet shall be factory-provided and installed by this contractor in a location designated by the A/E]. Service outlet requires a dedicated single-phase electric circuit as it is shipped loose. 

2.4	BLOWER
A.	Blower section construction, Supply Air and Exhaust Air: Belt drive motor and blower shall be assembled onto a 14-gauge galvanized steel platform and must have neoprene vibration isolation devices.
B.	Blower assemblies: Shall be statically and dynamically balanced and designed for continuous operation at maximum rated fan speed and horsepower.
C.	Centrifugal blower housing: Formed and reinforced steel panels to make curved scroll housing with shaped cutoff. 
D.	Forward curved blower (fan) wheels: Galvanized or aluminum construction with inlet flange and shallow blades curved forward in direction of airflow that are mechanically attached to shaft with set screws.
E.	Blower section motor source quality control: Blower performance shall be factory tested for flow rate, pressure, power, air density, rotation speed and efficiency. Ratings are to be established in accordance with AMCA 210, “Laboratory Methods of Testing Fans for Rating”.	
F.	[Exhaust Only Operation: The exhaust blower will run continuously while the supply blower is off.]

2.5	MOTORS
A.	General: Blower motors greater than ¾ horsepower shall be “NEMA Premium™” unless otherwise indicated. Minimum compliance with EPAct minimum energy-efficiency standards for single speed ODP and TEFC enclosures is not acceptable. Motors shall be heavy-duty, permanently lubricated type to match the fan load and furnished at the specified voltage, phase, and enclosure. Drives shall be sized for a minimum of 150% of driven horsepower and pulleys shall be fully machined cast-type, keyed and fully secured to the fan wheel and motor shafts. Electric motors of ten horsepower or less shall be supplied with an adjustable drive pulley. Comply with requirements in Division 23 05 13, matched with fan load. 
B.	Motors shall be Select one [60 cycle, 1 phase 115 volts] [60 cycle, 1 phase 208 volts] [60 cycle, 1 phase 230 volts] [60 cycle, 3 phase 208 volts] [60 cycle, 3 phase 230 volts] [60 cycles, 3 phase 460 volt] [60 cycle, 3 phase 575 volts]. The designation “NEMA Premium™” applies to electric motors with efficiencies that are “better than EPAct”. The terms “high efficiency” or “premium efficiency” have no industry definitions. 

2.6	UNIT CONTROLS
A.	The unit shall be constructed so that it can be controlled by a factory-supplied controller or it can be monitored and controlled by a Building Management System (BMS). [This unit shall be controlled by a factory-installed microprocessor programmable controller (DDC) that is connected to various optional sensors]. Note: if unit is to be connected to a BMS, a factory-installed microprocessor is required. If there is no BMS, a remote panel can be specified. If a remote panel is specified, make certain that any needed control switches are included in the remote panel.
B.	[Unit shall incorporate a DDC controller with integral LCD screen that provides text readouts of status, operating settings, and alarm conditions. DDC controller shall have a built-in keypad to permit operator to access read-out screens and change settings without the use of ancillary equipment, devices, or software. DDC controllers that require the use of equipment or software that is not factory-installed in the unit are not acceptable. Alarm readouts consisting of flashing light codes are not acceptable]. Note: some manufacturers are known to incorporate DDC controllers that require the use of separately purchased handheld hardware or a PC and/or software to view or change settings. Owner-specified ventilating conditions can be input by means of pushbuttons. 
1.	[Operating protocol: The microprocessor shall be factory-programmed for [BACnet MSTP] [BACnet IP] [Modbus RTU] [Modbus IP] for monitoring of the unit’s status]. Specify protocol.   
C.	[Variable Frequency Drive (VFD)] [Unit shall have factory installed variable frequency drives for modulation of the blower motors. The VFDs shall be factory-programmed for unit-specific requirements and shall not require additional field programming to operate]. 
D.	[Supply fan shall be configured for [constant volume] [duct pressure] [building pressure] [CO2 sensor] [network control] [0-10 VDC signal by others] [VOC monitor].] Note: Modulating fan control requires VFDs and microprocessor. 
E.	[Exhaust fan shall be configured for [constant volume] [building pressure] [network control] [0-10 VDC signal by others] [supply tracking].] Note: Modulating fan control requires VFDs and microprocessor.
F.	[Remote Display: Contractor shall provide and install a remote display that functions as a remote indicator of owner-selected operating parameters and also permits remote inputting of new operating parameters. Each remote display shall have a large LCD user interface screen similar in form and function to the screen on the DDC. Installed location of remote display shall be as indicated on the plans]. Note: only one remote interface per unit is available. 
G.	[Airflow monitoring required in the [supply airstream] [exhaust airstream] [supply & exhaust airstreams].]
H.	Sensors
1.	[Dirty Filter Sensors]
2.	[CO2 Sensor]
3.	[Temperature Sensors- [OAI], [EAD], [RAI], [OAD]] Note: OAI and OAD are standard with microprocessor.   
4.	[Relative Humidity Sensors – [OAH], [RAH]]
5.	[Rotation Sensor]

3.7	FILTERS
A.	[Unit shall have permanent metal filters located in the outdoor air intake and shall be accessible from the exterior of the unit]. [[MERV8] [MERV 13]] disposable pleated filters shall be provided in the intake air stream and [[MERV8] [MERV 13]] filters in the exhaust air stream]. Note: 2” thick MERV 8 filters are standard.

3.	EXECUTION
3.1	EXAMINATION
A.	Prior to start of installation, examine area and conditions to verify correct location for compliance with installation tolerances and other conditions affecting unit performance. See unit IOM.
B.	Examine roughing-in of plumbing, electrical and HVAC services to verify actual location and compliance with unit requirements. See unit IOM.
C.	Proceed with installation only after all unsatisfactory conditions have been corrected.

3.2 INSTALLATION
A.	Installation shall be accomplished in accordance with these written specifications, project drawings, manufacturer’s installation instructions as documented in manufacturer’s IOM, best practices, and all applicable building codes.

3.3 CONNECTIONS
A.	In all cases, industry best practices shall be incorporated. Connections are to be made subject to the installation requirements shown above.
1.	Duct installation and connection requirements are specified in Division 23 of this document.
2.	Electrical installation requirements are specified in Division 26 of this document. 

3.4 FIELD QUALITY CONTROL
A.	Manufacturer’s Field Service: Engage an authorized service representative to inspect field assembled components and equipment installation, to include electrical and piping connections. Report results to A/E in writing. Inspection must include a complete startup checklist to include (as a minimum) the following: Completed start-up checklists as found in manufacturer’s IOM. Insert any other requirements here.

3.5 START-UP SERVICE
A.	Engage an authorized service representative to perform startup service. Clean entire unit and install clean filters. Measure and record electrical values for voltage and amperage. Refer to Division 23 “Testing, Adjusting and Balancing” and comply with provisions therein.

3.6 DEMONSTRATION AND TRAINING:
A.	Engage an authorized service representative to train owner’s maintenance personnel to adjust, operate, and maintain the entire unit. Refer to Division 01 Section Closeout Procedures and Demonstration and Training.