Installation; Assembly; Securing The Frame - Lennox BAC 030 SNM 3M Installation, Operating And Maintenance Manual

NON ADJUSTABLE NON ASSEMBLIED ROOFCURB INSTALLATION

Installation

The roof mounting frame provides support when the units are installed in down-fl ow confi gurations.
The non adjustable, non assembled roof mounting frame can be installed directly on decks having adequate structural strength or on
roof supports under deck. See page 24 for frame dimensions, location of supply and return air opening
NOTE: frame assembly must be installed fl at, levelled within 5mm per linear meter in any direction.

Assembly

The frame is supplied as a single package and shipped folded down for ease of transport and handling. It is easy fi eld assembled as
all parts required are supplied with the frame.

Securing the frame

To ensure proper mating with units, it is mandatory that the roof mounting frame be squared to roof structure as follows:
• With frame positioned levelled in the desired location on roof trusses, tack weld corner of frame.
• Measure frame diagonally from corner to corner as shown above. These Dimensions must be equal in order for the fame to be square.
• It is extremely important to sight frame from all corner to ensure it is not twisted across. Shim frame under any low side. The maximum
slope tolerance is 5mm per linear meter in any direction.
• After the frame has been squared, straightened and shimmed, weld or secure the frame to the roof deck.
NOTE: It must be securely fastened to the roof as per local codes and regulations.
BALTIC-IOM-0412-E / Installation manual
Unit fl oor insulation + gasket
Air duct
Unit fl oor
Unit support rail
Roof curb
• 17 •