Greenheck CRD-3 Series, CRD-3xxWT Series, CRD-3xxL Series, CRD-700 Series, CRD-310WT Operation And Maintenance

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Document 452832

CRD-3xx, CRD-3xxL, CRD-3xxWT and

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CRD-700 Series for SP Fans

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.

C#5005978

3

1

4

6

Number Description

1 Flooring Systems

2 Wood Truss

3 Air Ducts

4 CRD-310WT assembly

5 Mounting Angle

6 Resilient Channel

7 Gypsum Board

8 Grille

9

Finishing System

(not shown)

2

5

3.69”

7

Isometric view of CRD-310WT in wood truss system

Wires to ceiling fan

8

Isometric view of a CRD-3XX series damper.

This manual is the property of the owner and is required for future maintenance. Please leave it with the owner when
the jobs is complete.

Do not allow
interference in
this area

Wires from lighted grille

Isometric view for wiring the CRD-3XX series damper to

the lighted grille and ceiling fan.

CRD Series for SP Fans 1

General Information

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Table of Contents

General Information ............................................. 2

Plaster Flange Application .................................... 3

Damper Installation to a SP Fan .......................... 4

Installation .........................................................5-7

• ETL - Wood Construction ............................. 5

• UL/cUL - 1 Hour Combustible Floor/Ceiling . 6

• UL/cUL - 3 Hour Non -Combustible Floor/

Ceiling ............................................................ 7

Maintenance ......................................................... 8

Troubleshooting .................................................... 8

Receiving and Handling

Upon receiving dampers, check for both obvious
and hidden damage. If damage is found, record all
necessary information on the bill of lading and file
a claim with the final carrier. Check to be sure that
all parts of the shipment, including accessories, are
accounted for.

Dampers must be kept dry and clean. Indoor storage
and protection from dirt, dust and the weather is
highly recommended. Do not store at temperatures in
excess of 100°F (38°C).

“UL CLASSIFIED (see complete marking on
product)”

“UL CLASSIFIED to Canadian safety standards

(see complete marking on product)”

Standard 555C (Listing #R13446)

These installation instructions show recommended
installation procedures. These or other installation
methods may be followed subject to the approval of the
authority having jurisdiction.

Model CRD-310, 320, 350, 360, 310L, 320L, 310WT
and 700 are specific sizes of Greenheck’s model
DFD-350 dampers equipped with hardware to facilitate
installation with Greenheck model SP ceiling exhaust
fans.

The CRD-3xx(L, WT) series and CRD-700 dampers are
classified to function as a heat barrier in air handling
penetrations through fire resistive membrane ceilings.
They are intended to maintain the fire resistive integrity
of the ceiling. They can only be installed in conjunction
with the SP fan models shown and cannot be installed
alone.

NOTE: Motors for fan models used in conjunction with

CRD shall be equipped with thermal cut-off fuse
control.

Safety Warning

Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury
or death. Read the installation, operating, and
maintenance instructions thoroughly before installing
or servicing this equipment.

CRD Series for SP Fans2

Plaster Flange Application

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Note: The plaster flange is required when the
damper is installed in a combustible floor/ceiling
assembly.

When the damper is installed in a non-combustible
ceiling/floor assembly, the plaster flange is not required
and can be discarded. When unpacking the flange
kit from the damper, remove all tape residue from the
damper and plaster flange.

When the plaster flange is required, the flange assembly
must be attached to the damper as follows.

1. Unfold the plaster flange assembly that is supplied.
Wrap the assembly around the damper in the
orientation shown in Figure 1. Connect the open
ends of the flange together.

2. Align the edge of the plaster flange with the edge of
the damper frame. Clamp the flange to the damper
frame.

3. Using the flange holes as a guide, secure the flange
to the damper frame using the supplied fasteners.
Install fasteners within 11⁄2 inches (38mm) from each
corner first, then at or near the center of each damper
side. Install a fastener on both sides of the grille
mounting tabs. Be careful to not strip out the damper
frame material while installing the fasteners.

TEK Screws
14 PLCS

Height

Width

CRD Damper

Grill Mounting Tab

Plaster Flange

Figure 1: CRD damper with plaster flange

CRD Series for SP Fans 3

Damper Installation to a SP Fan

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1. General: The fan/damper assemblies described
in these instructions, when installed as shown,
provide appropriate protection for air inlet or outlet
penetrations in the ceiling membrane of floor/ceiling
and roof/ceiling assemblies with fire resistance
ratings of up to 3 hours.

2. System Components: All system components
(ducts, duct drops, hanger wires, sleeves, and diffuser
pan) must be constructed of steel. The diffuser core
may be non-ferrous. Grilles may be non-metallic.
Flexible duct (if used) must be Class 1 or Class 0
type, bearing the UL listing mark. Maximum length of
flex duct shall not exceed 14 feet. The installations
and air devices shown in these instructions illustrate
general arrangement only. Installations must also
incorporate any specific requirements in the FRD (UL
Fire Resistance Directory). Note that both “Design
Information - General” and individual ceiling/floor or
ceiling/roof design listings apply.

3. Ceiling Penetrations: Ceiling penetration should
be located within ceiling tiles, panels, or gypsum
without necessitating cuts in the ceiling suspension

main runners, cross tees, or trusses. If required, a
maximum of one runner or cross tee may be cut
to enable proper damper location and installation.
Each cut end shall be supported by a minimum 12
SWG vertical hanger wire. a 1⁄2 in. clearance must
be maintained between the air inlet/outlet and
the cut end of the runner or cross tee. Cutting of
wood trusses in combustible ceiling designs is not
permitted.

4. Connections: Connections must be made using #8
sheet metal screws, 3⁄16 in. tubular steel rivets, tack
or spot welds. Use a minimum of one connection
per side for rectangular or square dampers and three
equally spaced connections for round dampers.
Space fasteners a maximum of 6 in. apart. Any W or
H dimension larger than 12 in. requires a minimum
of two connections per side. All screws or rivet
attachments shall be placed a minimum of 3⁄16 in from
the edge of the damper frame, duct drop, diffuser, or
grille frame. When making connections, the ceiling
radiation damper may slide over the neck or inside
the neck of the diffuser, grille, or inlet/outlet device.

CRD Model

SP Fan Size

1 Hour Com-

SP-B50, SP-B70,
SP-B80, SP-B90,
SP-B110,
SP-B150, SP-B200

SP-A50, SP-A70,
SP-A90, SP-A110,
SP-A125,SP-A190

SP-A250, SP-A290,
SP-A390, SP-A200

SP-A410, SP-A510,
SP-A710, SP-A780

SP-A900, SP-A1050 CRD-360 CRD-360 91⁄4 253⁄8 241⁄4 147⁄8

SP-A1550 CRD-700 -- 91⁄4 251⁄8 241⁄8 121⁄4

CRD-310WT

UL Classified

3 Hour Non-

bustible

-

- CRD-320 CRD-320 63⁄4 151⁄2 141⁄2 123⁄8

- CRD-350 CRD-350 91⁄4 195⁄8 181⁄2 147⁄8

Combustible

CRD-320

CRD-320L

CRD-310

CRD-310L

CRD-310-WT

(Warnock Hersey)

ETL

Listed

CRD-320 41⁄2 155⁄8 141⁄2 123⁄8

CRD-310 51⁄2 145⁄8 135⁄8 111/8

“D” “E”

(See Figure 4)

Width

(in.)

Height

(in.)

CRD Series for SP Fans4

ETL Installation - 1 Hour Combustible Floor/Ceiling Assemblies

®

(formerly Warnock Hersey)

Figure 6: CRD with SP Fan

Ceiling Exhaust Fan Installation

1. Fan/damper assemblies installed in combustible floor
ceiling assemblies with gypsum board ceilings require
the use of a plaster flange (Item 3 in Figure 6). A plaster
flange kit, which comes with all of the necessary
mounting hardware, is supplied with the unit.

2. The fan/damper assembly is to be attached to the
trusses using 2 - 1 in. x 1 in. x 16 ga.
(25mm x 25mm x 1.5mm) or 2 - 1¼ in. x 1 in. x 20 ga.
(32mm x 25mm x 1mm) mounting angles. Attach
mounting angles to the damper with a minimum of
2 - #8 screws or 5⁄32 in. (4mm) diameter steel rivets.

Note: Make sure the fasteners do not interfere with the
damper operation.

3. Install the fan/damper assembly, with attached mounting
angles, between the trusses as shown in Figure 6 and
attach mounting angles to the trusses using 4 - 1¼ in.
long steel screws per mounting angle.

4. Run a minimum of 4 - 1 in. (25mm) long #6 screws
through the gypsum board into the plaster flange as
shown in Figure 6.

Grille Installation

Mount grille to underside of ceiling radiation damper
using #10 x 1⁄2 in. Phillips head stainless steel sheet
metal screws provided with SP fan.

CRD Series for SP Fans 5

UL/cUL Installation - 1 Hour Combustible Floor/Ceiling Assemblies

®

Figure 1: CRD with SP Fan

Ceiling Exhaust Fan Installation

1. Fan/damper assemblies installed in combustible floor
ceiling assemblies with gypsum board ceilings require
the use of a plaster flange (Figure 1, Item 3). A plaster
flange kit, which comes with all of the necessary
mounting hardware, is supplied with the unit.

2. The fan/damper assembly is to be attached to the
trusses using 2 - 1 in. x 1 in. x 16 ga.
(25mm x 25mm x 1.5mm) or 2 - 11⁄4 in. x 1 in. x 20 ga.
(32mm x 25mm x 1mm) mounting angles. Attach
mounting angles to the damper with a minimum of
2 - #8 screws or 5/32 in. (4mm) diameter steel rivets.

Note: Make sure the fasteners do not interfere with the
damper operation.

3. Install the fan/damper assembly, with attached mounting
angles, between the trusses as shown in Figure 1 and
attach mounting angles to the trusses using 4 - 1¼ in.
long steel screws per mounting angle.

4. Run a minimum of 8 - 1 in. (25mm) long #6 screws
through the gypsum board into the plaster flange as
shown in Figure 1.

Grille Installation

Mount grille to underside of ceiling radiation damper
using #10 x 1⁄2 in. Phillips head stainless steel sheet
metal screws provided with SP fan.

These instructions describe the installation of a
CRD-310WT in designs: L528, L546, L558, L562, L574,
L576, L581, L583, L585, L592, M501, M503, M508,
P533, P538, P545, P547, P548, and P554 as detailed in
the UL Fire Resistance Directory.

GA File No. UL Design No.

FC 5012 M508

FC 5514 L558

FC 5514.4 L585

FC 5519 M503

FC 5521 L562

RC 2603 P533

RC 2604 P554

RC 2606 P545

RC 2609 P538

RC 2611 P547

RC 2612 P545

GA = Gypsum Association Fire Resistance Manual

CRD Series for SP Fans6

UL/cUL Installation - 3 Hour Non Combustible Floor/Ceiling Assemblies

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Concrete Floor

SP Fan

#10-32 Threaded
Steel Rod

Grille

Hanging Vibration
Isolation

Ceiling Radiation
Damper

Fire Rated Ceiling

3 in .

#10 x ¾ in. SMS

6 in. Max. Centers,

2 Min./Side

Hole Opening Is

“A” x “B”

Figure 3

Ceiling Exhaust Fan Support

The following two mounting methods may be used.

1. Suspend fan/damper assembly using #10-32
threaded steel rod as shown in Figure 4. Suspend
from joists or cold rolled channels (do not suspend
from beams). If vibration isolators are used, fender
washers must have a larger outside diameter than
the holes in the fan mounting angle.

2. Support fan/damper assembly using (2) minimum
16 ga. x 11⁄2 in. steel channels with 9⁄16 in. flanges.
Suspend from joists or cold rolled channels (do not
suspend from beams). Alternatively, bolt channels
ends directly to joists or other cold rolled channels
using minimum #10 bolts. See Figure 5.

Do NOT support fan/damper assembly by ceiling
tile or ceiling grid (Tee) members when using with a
suspended ceiling!

Grille Installation

Mount grille to underside of ceiling radiation damper
using 2 - #10 x 1⁄2 in. Phillips head stainless steel sheet
metal screws provided with SP fan.

Beam

Steel
Joists

Steel Hanger Wires
(12 SWG minimum)

Figure 4

“D”

“E”

1 1/2 in. x 9/16 in. x 16 Gauge

(Minimum) Cold Formed Steel

#10 Bolt or #10-32

Threaded Steel Rod

Supports To Joists Or

Other Cold Formed

Channels (By Others)

Figure 5

CRD-XXX

Series Damper

#10 x 3/8 in. SMS,
(Minimum) 4 Per Side

#10 Bolt or Sheet Metal Screw
(Minimum) Attached Through
Prepunched Holes In Mounting
Angles Into Channel Brace
Supports, 2 Per Side (By Others)

CRD Series for SP Fans 7

Damper Maintenance

Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary, use
mild detergents or solvents. If lubrication is desired for components such as axle bearings, jackshaft bearings and
jamb seals, do not use oil-based lubricants or any other lubricants that attract contaminants such as dust.

Damper Troubleshooting

The following is a possible cause and correction list for common concerns with the dampers.

Symptom Possible Cause Corrective Action

Frame is 'racked' causing blades to bind
on jamb seals

Damper does not fully
open and/or close

Link separated Heat Replace link

Screws in damper linkage Damper installed too far into wall. Move

Contaminants on damper Clean with a non-oil based solvent (see

Adjust frame such that it is square and
plumb

out to line as designated on damper label

Damper Maintenance)

Our Commitment

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.

Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature
section of the website at Greenheck.com/Resources/Library/Literature.

®

Phone: [phone] • Fax: [phone] • Parts : 800.355.5354 • E-mail: [e-mail] • Website: www.greenheck.com

452832 • CRD Series for SP Fans, Rev 10, March 2019 Copyright 2019 © Greenheck Fan Corporation8