A DJ & DG MANUAL
8 of 34 May 12 R2
LIFTING
Engineered Air units are constructed on a structural steel base frame. The unit base frame is equipped with
lifting lugs specifically located to facilitate proper lifting of the unit. Spreader bars must be used to keep
rigging away from the unit cabinetry. All lifting lugs must be used. If using a lift truck, ONLY lift using the
perimeter structural frame. DO NOT allow forks to lift on cabinet or unit floor.
Note: There may be bottom mounted components, such as drain piping, that can be easily damaged.
Warning:
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Injury or death can result from improper rigging and lifting. Rigging and
lifting of equipment must be performed by qualified personnel with proper
equipment using appropriate and approved safety precautions.
MOUNTING
Units must be mounted level. Failure to do so can cause water to be trapped in drain pans or operational
problems that can void warranty. Failure to do so can result in injury or death, damage the equipment
and/or building and can be a cause of poor indoor air quality.
Equipment must be installed so that sufficient working clearance and component access is provided.
Some units are designed for cantilevered installation. Consult the Submittal Record for specific unit
mounting.
Consult the Submittal Record for specific unit mounting. Engineered Air units are constructed for three
types of mounting:
1. Base mounting – Consult the Submittal Record for type of mounting. Unless the unit is specifically
designed for point or other mounting, the base of the unit must be supported continuously by a
mounting support system that is directly below the unit structural base frame and runs the entire
length and width of the unit. Refer to the Submittal Record for mounting information. Units 100”
(2500mm) wide and under can be supported on each side continuously along the length of the unit.
As a minimum, sleepers that are installed perpendicular to the length of the unit must be continuous
across the width of the unit and shall be installed at the end lifting point base rails and the lesser of
80” (2000mm) on center or at all lifting points.
2. Suspended mounting – Where units have been designed for suspended mounting, factory provided
connections for hanger rods will be provided. All hanger rod supports must be used. Suspended
units must be protected from damage. When installed in aircraft hangers, parking garages or
repair garages the installation must comply where applicable with:
a) The Canadian Natural Gas and Propane Installation Code, C.S.A. Standard B149.1
b) The Standard on Aircraft Hangers, ANSI/NFPA 409
c) The Standard on Parking Garages, ANSI/NFPA 88A
d) The Standard on Repair Garages, ANSI/NFPA 88B
3. Roof curb mounting – The curbs are constructed of heavy gauge load bearing, galvanized steel,
and must be fully insulated after installation. Wood nailer strips are provided for easy attachment of
roof flashing. Gasket material is supplied with the unit and must be field mounted on the curb to
seal the joint between the curb and the unit frame. The curb must be supported along its entire
perimeter and any full height cross members as shown on the shop drawings. Point loading of
curbs is not permissible.
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