Outside Air Unit Roof Curb Adapter

Residential commercial roof curbs.

Outside air unit roof curb adapter.

When an hvac unit is installed for the first time a roof curb is specifically designed for that unit. For anyone new to the hvac industry this is a valid question. When you install adapter curbs welded rtu rooftop unit curbs or equipment supports for your rooftop hvac package unit going with the wrong curb adapter company can cost you big money and time. 3 6 ton curb adapter 7 5 10 ton curb adapter add 275 00 12 ton curb adapter add 450 00 15 25 ton curb adapter add 799 00.

Curb adapter sizing select by tonnage. Let s start with a new installation. 1 inch insulation from outside air. The slightest inefficiency or mismatch in design or engineering can create blow back resistance that can wear down your climate control fan parts and cause your equipment to waste costly energy.

The curb material is galvanized steel and may vary from 18 to 14 gage based on the unit load and the quantity of cross bracing provided. The roof curb is designed to support the weight of the unit and to offer a means for contractors to connect the supply return air duct work. Any existing curb adapters should be removed from the system. When a building is constructed prior to the installation of the hvac rooftop unit rtu the roof is cut and a metal structure called a roof curb is installed.

Solution roof mounted outdoor units. Flat curbs see figure 7 curb heights vary in increments of 4 00 from 14 00 to 34 00. Cl outside curb length unit length minus 0 875. When the hvac unit needs to be replaced an adapter is a faster safer and cheaper alternative to replacing the existing unit curbs.

A curb adapter should only be installed on top of the original factory roof curb or the curb that is roofed into the building. Models gpi gpip and gpir roof curbs fully welded construction with wood nailer insulation and flashing flange for roof decks that are covered with 2 to 6 inches of insulation. Adapters reducers most commonly used to match new fans to existing roof curbs used to increase or reduce the standard fan curb cap dimensions to a non standard specified curb size. In addition to the structural and weight issues stacking adapter curbs adds an unnecessary amount of static loss to the duct system causing your brand new unit to under perform in most cases.

Get a residential adjustable curb number and cut sheet now. What is a curb adapter. Modular packaged cooling. Carrier provides a complete line of commercial packaged rooftop units with puron refrigerant to meet demanding hvac system requirements.