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

PRODUCT SPECIFICATION GUIDE
HEALTHCARE, LABORATORY, AND CLEANROOM PRODUCTS
RADIAL FLOW FLAT DROP FACE DIFFUSER (HLC-FFR)
FACILITY SERVICE SUBGROUP: DIVISION 23 HVAC (PREVIOUSLY DIVISION 15)

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Specifier Notes: 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 nonexclusive license to use this document or portions of it for the purpose of preparing written product specifications. 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 NONINFRINGEMENT. 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	SUMMARY

A.	This document details the requirement for providing radial air distribution for healthcare and laboratory applications. Housings and filters shall be the quantity, size, and capacity as shown in the job equipment schedule including construction and options as specified.

1.2	REFERENCES

A.	ASHRAE 70 – Method of Testing the Performance of Air Outlets and Air Inlets
B.	ASHRAE 113 – Method of Testing for Room Air Diffusion
C.	ASHRAE 170 – Ventilation of Health Care Facilities
D.	ASTM E84 – Standard Test Method for Surface Burning Characteristics of Building Materials
E.	CSA Z317 – Special requirements for heating, ventilation, and air-conditioning (HVAC) systems in health care facilities
F.	UL 723 –Standard for Test for Surface Burning Characteristics of Building Materials

1.3	
SUBMITTALS

A.	Provide data including dimensions, features, options, general construction, and materials used in manufacture. Additions to include performance and light output where applicable.

1.4	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 covers a period of 180 days from the date of start-up, not to exceed 360 days from the date of shipment, for those components manufactured by Greenheck and only to the extent that we will furnish a new product to replace that which is proven to be defective by manufacturer.

2.	Radial Flow Flat Face Diffusers

2.1	Performance Requirements

A.	Diffusers shall have a radial discharge pattern with high volumes of air resulting in short throw and minimum entrainment of room air. 
B.	Diffusers shall be provided with a 1-way or 2-way discharge pattern per schedule. 

2.2	Unit Construction

A.	Diffuser material to be (select one):
0.050” thick aluminum plenum and face
20ga. (0.036”) 304 stainless steel plenum and face
B.	Unit finish to be (select one):
Frames: #4 satin polish; Plenum: mill finish
Frames: white anodic acrylic finish; Plenum: white anodic acrylic finish
C.	Room side removable [16%, 23%, 51%] free area perforated face screen shall be provided. Face screen shall be restrained by quarter-turn fasteners. Diffusers shall be provided with two stainless steel safety cables for ease of installation/removal and to prevent accidental dropping of the diffuser face.
D.	Diffuser plenum shall be formed of a single piece of sheet metal.
E.	Diffuser inlet collar shall be at least 2 in. in height and have a raised bead for sealed and secure connection of ductwork to the diffuser.
F.	Diffusers shall be provided with tabs at each corner of the plenum for support  
from structure above. 

2.3	Optional Features
A.	Diffusers shall be supplied with inlet mounted, aluminum, radial opposed blade damper. Damper operator shall be accessible by removable plug and does not require removal of the diffuser face to adjust.
B.	Diffusers shall be supplied with inlet mounted, 304 stainless steel, butterfly damper. Damper operator shall be accessible by removable plug and does not require removal of the diffuser face to adjust.
C.	Diffusers shall be supplied with 1/2 inch thick, foil faced, external insulation, with an 
R-value of 4.2 or higher. Insulation shall have a flame spread rating of 25 or less, and a smoke developed rating of 50 or less per UL 723/ASTM E84.

3	ACCEPTABLE MANUFACTURERS

A.	Greenheck Fan Corp