Greenheck Support Mullions for use in Oversize Openings (462 Manuel d'utilisateur télécharger pdf

These installation instructions apply to the fabrication and construction of generic support mullions. Support mullions

are necessary whenever static fire dampers are installed into a vertical opening that is larger than the largest UL rated

size for that damper. The mullions allow construction of a fire barrier that is larger than the maximum available size.

The opening must not exceed 120 in. (3048mm) high, but can be any width provided a vertical support mullion is used a

maximum of every 120 inches (3048mm).

To properly use support mullions they must be fabricated and installed according to the following instructions.

Wall Mullion Cap

B-B (Typical)

Mullion Assembly

A-A (Typical)

Retaining Angles (Typical)

Sleeve (Typical)

Horz. to Vert.

Mullion Cap

C-C (Typical)

Document number 462105

FABRICATION AND FIELD

INSTALLATION INSTRUCTIONS

Support Mullions for use in Oversize Openings

SPECIAL NOTE: Support

mullions may only be used

with static-rated fire damper

assemblies; they cannot be used

to install combination fire-smoke

dampers in wall openings that

exceed the maximum UL-approved

size for the fire-smoke damper

model being installed.

Application

Generic steel mullions can be used to separate vertically

mounted galvanized steel fire dampers in wall openings

larger than the UL permitted multiple damper assembly

size. Mullions can either be used vertically, horizontally or

both to split up a vertical wall opening requiring use of a

damper having a 1

/2 hour fire resistance rating. Maximum

mullion span is 120 in. (3048mm) plus expansion allowance

when used either horizontally or vertically.

Sleeves are to be around each damper assembly. Mullions

are not intended to be in the airstream, (i.e. exposed to

flow) or to be a part of the ductwork.

Wall Opening

Steel mullions are intended for use in a concrete block or

solid concrete wall.

Hollow concrete blocks are to be filled with concrete

(minimum 3500 psi) to permit proper mullion anchoring.

Wall thickness is to be 7 in. (178mm) minimum, 12 in.

(305mm) maximum.

1 2 3

Résumé du contenu

Page 1 - Document number 462105

These installation instructions apply to the fabrication and construction of generic support mullions. Support mullions are necessary whenever static

Page 2 - Mullion Caps

Support mullion assemblies consist of three basic parts: the wall mullion cap, the horizontal to vertical mullion cap and the mullion sections. Determ

Page 3 - Mullion Installation

6F3/16 in. dia.(12 holes)13/411/23/411/21/2Horizontal Mullion ChannelEnd ViewSide ViewTop ViewEH31/4113/16One or two pieceSide ViewEnd ViewEnd PlateCe

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Greenheck Support Mullions for use in Oversize Openings (462 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Équipement Greenheck Support Mullions for use in Oversize Openings (462. Greenheck Support Mullions for use in Oversize Openings (462105) User Manual Manuel d'utilisatio

Résumé du contenu

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