111221 curb adaptors rjs

Sharing our Guidance

Curb Adaptors

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Curb Adaptors DEFINITIONS

DIRECT REPLACEMENT

The replacement equipment will fit on the existing curb with no modifications. The existing curb must be in good shape, and the top flange of the existing curb must be at least 8 inches from the roof surface.

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Curb Adaptors DEFINTIONS

FULL PERIMETER CURB

The existing curb will be removed and a new full perimeter curb will be installed and flashed into the roof. Minimum curb height should be 12 inches.

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Curb Adaptors DEFINITIONS

DIRECT REPLACEMENT

The replacement equipment will fit on the existing curb with no modifications. The existing curb must be in good shape, and the top flange of the existing curb must be at least 8 inches from the roof surface.

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Curb Adaptors DEFINITIONS

ADAPTIVE (ADAPTER) CURBThe existing curb will be removed and the new adaptive curb will be installed and flashed into the roof. This type of curb will transition to the shaped of the replacement unit from the footprint of the existing curb that was removed. Particularly used when it is required to transfer the weight of the replacement unit to the structure.

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Curb Adaptors DEFINITIONS

CURB ADAPTER The existing curb will be used with an engineered

extension being added to the top of the existing curb, that transitions to the shape of the new unit, and the size and location of the new unit’s SA/RA openings.

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• HOW DUCT IS MOUNTED TO CURB• CARRIER DF/J• HOW HIGH IS EXISTING CURB• LOOK AT OTHER UNIT MANUFACTURERS• REQUIRE SUBMITTALS FROM REPUTABLE

ADAPTER CURB MANUFACTURER• EXHAUST FANS, ALSO

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Curb Adaptors

• EXISTING HEIGHT• SERVICE HEIGHT• PROTECTING ROOF• FAN PRESSURE• USING CURB FOR RETURN AIR PLENUM– Insulated– Roof deck (sealed)

TITLE OF PRESENTATION (ON MASTER SLIDE)CONCLUSION . . .

THANK YOU.