Securing The Curb; Curbing And Flashing - Lennox BAC020SNM Installation, Operating And Maintenance

INSTALLATION ON A ROOF MOUNTING FRAMES

SECURING THE CURB

When the frame is correctly positioned, it is essential to secure the assembly with a disconnected stitched welded seam (20 to
- - - -)
30 mm every 200 mm

CURBING AND FLASHING

Fig. 24
Before installing the equipment, make sure that seals are not damaged and check that the unit is secured to the mounting
frame. Once in position, the bottom of the equipment must be horizontal.
The installer must comply with local authority standards and specifications.
BALTIC R410A-IOM-0708-E
along the outside or by using an alternative method.
Outside of frame must be insulated with rigid type insulation;
We recommend a minimum of 20 mm thick insulation (2 figure 24).
Check that the insulation is continuous, counter flash and seal around the frame
as shown in (1-figure 24).
CAUTION: To be effective, the upstream must end below the drop edge (3 - figure
24).
Where pipes and electrical conduits extend through the roof, flashing must
conform to local codes of practice
Fig. 23
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