Greenheck Fan 747680 manual Ceiling Radiation Damper CRD, Discharge Installation SP-A 50-90Models

Ceiling Radiation Damper (CRD)

If fan is to be used in a fire resistive membrane ceiling, a ceiling radiation damper must be used.

If the ceiling radiation damper is already mounted to the fan from the factory, proceed to Install the Fan.

	Attachment Tabs
A-50-510, 710, 780 Models	B-Models

To mount the ceiling radiation damper to fan, make sure grille attachment tabs are facing down. Then place the inlet part of the fan into the ceiling radiation damper collar, and use self-tapping sheet metal screws (by others) to screw through the damper collar and into the fan housing. If the fan/light combination is being used, make sure ceiling

radiation damper has an electrical plug in it.

The electrical plug must

be inserted into the fan.

Make sure the electrical

wire will not interfere with

damper operation as shown in figure below.

	Wires to ceiling fan
	Do not allow
	interference
	in this area
A-700, 900-1550 Models	Wires from lighted grille

Discharge Installation SP-A 50-90 Models

1

Insert plastic duct tab into SP-A box slots.

Sheet Metal Screw #10x3/8

Phillips Head (PN 415838)

SP-A Box

SP-A Box Slot

Plastic SP-A	Plastic SP-A
Duct Adapter Tabs	Duct Adapter (PN 473322)

2

Rotate plastic SP-A duct adapter (PN 473322) until the screw tabs meets SP-A box.

Sheet Metal Screw #10x3/8

Phillips Head (PN 415838)

SP-A Box

Screw Tabs

Plastic SP-A

Duct Adapter (PN 473322)

3

Install screws provided to secure discharge.

Screw holes

Sheet Metal Screw #10x3/8

Phillips Head (PN 415838)

Ceiling Exhaust and Inline Fans 3

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