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York 251934-YTG-J-0910 User Manual

Page 103

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251934-YTG-J-0910

Johnson Controls Unitary Products

103

ZJ/ZR/ZF180-300 Roof Curb Duct Openings

1.

The 2” space between the ducts allows for “jumping” an
existing roof joist.

2.

The 58-1/2” overall dimension of the ducts allows ductwork
penetration between roof joists that are spaced on 72”
centers.

NOTE: Ducts can be installed into the curb from the roof. All

electrical and gas line connections can be made inside
the curb.

ZJ/ZR/ZF180-300 Cut Away of Roof Curb

ZJ/ZR/ZF180-300 Typical Installation

Roof Jack

Installation

Roof Curb

Installation

Slab On

Ground

Installation