Price LFD User manual

MANUAL – INSTALLATION & MOUNTING
v001 –Issue Date: 08/31/21
© 2021 Price Industries Limited. All rights reserved.
Critical Environments Diffusers
LFD, LFDC, FFU, PURAFLO, RFD, RFDC, FRFD, FRFDC,
AMDC, HCF, RAVD, RVDC

CRITICAL ENVIRONMENTS DIFFUSERS
TABLE OF CONTENTS
Product Overview
Before You Start............................................................ 1
Required Tools/Parts .................................................... 1
Installation & Mounting Instructions
Getting Started.............................................................. 2
T-Bar Mounting ............................................................. 3
Surface Mounting.......................................................... 4

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priceindustries.com |CRITICAL ENVIRONMENTS DIFFUSERS - Manual
CRITICAL ENVIRONMENTS DIFFUSERS
PRODUCT OVERVIEW
Before You Start
• Inspect all cartons and boxes for flaws and shipping
damage.
· If anything is discovered to be damaged, contact the
shipping company and file a freight claim.
• Ensure all tools (see required tools/parts list) are on site and
ready for use.
• Install ductwork prior to diffuser installation.
• A minimum of two (2) people will be required to install this
product.
• Filter Information
· Ensure that all HEPA/ULPA filters are stored in a clean,
dry location in a vertical position, as labeled on the
carton. Do not open the HEPA/ULPA filters until they are
ready to be installed in the diffuser. All construction in
the space should be complete, the site and upstream air
should be clean so as not to unnecessarily load the filter.
· Ensure that both the space and ductwork is clean, free
of debris, and ready for operation prior to installation of
filter.
IMPORTANT NOTE: Extreme caution should be taken to avoid
contact with filter media. Touching filter media may result in
filter failure. Damage to filters can occur during installation or
during leak qualification testing. The filters supplied by Price
have been 100% tested and certified by the manufacturer to
be free of defects and leaks. Price cannot accept responsibility
for damage that occurs after shipment, whether through
transit, handling or installation, and will not replace filters under
Price standard warranty.
Required Tools/Parts
To be supplied by contractor
• Cordless drill/impact (as needed)
• #8 self-tapping screws (Direct Mount only)
• Screwdriver bit(s) to suit self-tapping screws
(Direct Mount only)
• Damp Cloth(s) (for cleaning)
• Utility Knife
• Pliers with wire cutter
• Tape Measure
• Pre-stressed 12 ga. Suspension wire (or approved
alternative) with necessary equipment to hang wire (T-Bar
Mounting and HGMF Mounting only)

2CRITICAL ENVIRONMENTS DIFFUSERS - Manual |priceindustries.com
CRITICAL ENVIRONMENTS DIFFUSERS
INSTALLATION & MOUNTING NSTRUCTIONS
Getting Started
Step 1: Remove Diffuser from shipping
carton and inspect for any damage. If
product is found to be damaged please
contact your local Price representative.
Step 2: Determine if the diffuser
construction is the flanged or the non-
flanged style. Typically, non-filtered
diffusers have a flange around the face
of the unit, and filtered diffusers do not
(Figure 1).
Step 3: For T-bar mounting continue
to the “T-Bar Mounting” section of
this manual, or for surface mounting
continue to the “Surface Mounting”
section of this manual.
FIGURE 1: FLANGED PRODUCT VS. NON-FLANGED PRODUCT
FLANGED PRODUCT
NON-FLANGED PRODUCT

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CRITICAL ENVIRONMENTS DIFFUSERS
INSTALLATION & MOUNTING NSTRUCTIONS
FIGURE 2: LAY THE DIFFUSER ON THE T-BAR TO MOUNT
FIGURE 3: T-BAR MOUNTING (CUTAWAY)
T-Bar Mounting
Step 4: Ensure product size is
consistent with grid module size.
Step 5: Lay the Diffuser on the T-bar
so that all 4 sides are resting evenly on
the grid. Use shims to center diffuser if
required (Figures 2 & 3).
Step 6: Secure the diffuser with hanger
wire at all four corners, or other field-
approved support method.

4CRITICAL ENVIRONMENTS DIFFUSERS - Manual |priceindustries.com
CRITICAL ENVIRONMENTS DIFFUSERS
INSTALLATION & MOUNTING NSTRUCTIONS
Surface Mounting
Step 4: If the diffuser contains a flange,
it can be installed either directly into the
ceiling opening or through the use of a
mounting frame (HGMF). If diffuser does
not contain a flange, a mounting frame
is required. Please continue to either
the Direct Mount or Hospital Grade
Mounting Frame (HGMF) section:
Direct Mount (flanged diffusers only)
Step 5: Create a framed ceiling opening
which is consistent with the opening
size listed in the product submittal.
Typically this will be Nominal Size less
13/16”. Please ensure framing can
support the weight of the diffuser.
Step 6: Remove the diffuser facing by
disengaging the quick-release (1/4 turn)
fasteners.
Step 7: Raise the diffuser into the
opening and fasten securely to framing
using self-tapping screws or other field-
approved hardware as shown Figure 4.
Diffuser can be centered in the opening
through the use of shims or spacers
(provided by others).
Step 8: Seal at interface between
diffuser frame and ceiling as needed
(Figure 4).
Step 9: Wipe internal plenum surfaces
clean and re-secure the diffuser face by
engaging the quick-release (1/4 turn)
fasteners.
FIGURE 4: INSTALL THE FLANGED DIFFUSER IN
THE OPENING AND FASTEN SECURELY

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CRITICAL ENVIRONMENTS DIFFUSERS
INSTALLATION & MOUNTING NSTRUCTIONS
Hospital Grade Mounting
Frame (HGMF)
Step 5: Create ceiling opening
consistent with the size of the mounting
frame. Refer to the product submittal for
the appropriate opening size.
Step 6: The HGMF can be fastened
directly to framing or suspended from
hanger wires using the pre-punched
hanger holes.
Step 7A: To install the HGMF using
hanger wire, secure hanger wires
through pre-punched hanger holes in
frame. At least 1 wire should used near
each corner of the frame (Figure 5).
Step 7B: To fasten HGMF directly to
framing, screw through pre-punched
hanger holes into framing, or create
pilot holes to use alternative fastener
locations. Fasteners are to be provided
by others (Figures 6 & 7).
Step 8: Lay diffuser into mounting
frame and secure using hanger wires (or
other field approved support method).
Refer to T-bar installation section for
further information on lay-in installations.
Step 9: Wipe all surfaces clean and
ensure adequate seal is made at ceiling
interface(s).
Step 10: If filters are to be installed,
please refer to the Roomside
Replaceable Filter Quick Start Guide for
further information.
FIGURE 5: HGMF INSTALLED USING HANGER WIRES
FIGURE 6: HGMF INSTALLED BY SCREWING THE DIFFUSER TO FASTENING
FIGURE 7: HGMF SCREW IN INSTALLATION (SIDE VIEW)

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© 2021 Price Industries Limited. All rights reserved.