Ice-O-Matic B70 Installation Manual

Installation Instructions CRD-3XXX, CRD-3XXL &

CRD-700 Series Dampers on Model SP Fans

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 and 700 are speciﬁc sizes of Greenheck Model DFD-350 dampers equipped with hardware to facilitate installation with Greenheck Model SP ceiling exhaust fans. The CRD-3XX series and CRD-700 dampers are classiﬁed by UL 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.

Part Number 452832

UL CLASSIFIED (see complete marking on product) UL CLASSIFIED to Canadian safety standards (see complete marking on product) Standard UL555C

Classiﬁcations ﬁled at UL under Listing #R13446

3.69”

SP Fan Size CRD Model

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

SP-A1550, SP-A700 CRD-700

CRD-320

CRD-320L

CRD-310

CRD-310L

CRD-320

CRD-350

Damper Installation to a SP fan model

Fan housing ﬁts inside top ﬂange of damper frame. Observe label on damper indicating top.

Attach damper to fan housing using #10 x 3/4 in. sheet metal screws on 6 in. maximum centers, minimum two fasteners per side. See Figure 3.

Figure 1: Isometric view of a CRD-3XX series damper.

Wires to ceiling fan

Do not allow interference in this area

Figure 2: Isometric view for wiring the CRD-3XX series damper to the lighted grille and ceiling fan.

Concrete Floor

#10 x ¾ in. SMS

6 in. Max. Centers,

2 Min./Side

3 in .

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 1 1/2 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!

#10 x 3/8 in. SMS,

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)

CRD-XXX

Series Damper

(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)

Figure 5

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.

Grille

SP Fan

#10-32 Threaded Steel Rod

Hanging Vibration Isolation

Ceiling Radiation Damper

Fire Rated Ceiling

Beam

Steel Joists

Steel Hanger Wires (12 SWG minimum)

“D”

“E”

Figure 4

Unit Size “D” “E”

B50, B70,

4 1/2 15 5/8 B80, B90, B110, B150, B200

A50, A70,

5 1/2 14 5/8 A90, A110, A125, A190

A250, A290,

6 3/4 15 1/2 A390, A200

A410, A510,

9 1/4 19 5/8 A710, A780

A900, A1050,

9 1/4 25 3/8 A1410, A1550

A700 5 1/2 25 1/8

452832 CRD-3xx, CRD-700 rev. 5 Nov 2010