Lennox ROOFTOP FLEXY FXK 100, Installation, Operating And Maintenance

Page: 20 / 110

IOM – FLEXY II – 1007 – E Page 18
When the f rame is correctly positioned, it is essential to secure the assembly with a disconnected stitched welded seam (20 to
30mm every 200mm ) along the outside or by using an alternativ e method
CURBING AND FLASHING
Outside of frame must be insulated with rigid type insulation;
We recommend a minimum of 20 mm thick insulation (2-f igure 7).
Check that the insulation is continuous, counter f lash and seal around the
frame
as shown in (1-f igure 7).
CAUTION: To be effective, the upstream must end below the drop edge (3 - figure
7).
Where pipes and electrical conduits extend through the roof, flashing must be
conf ormed to local codes of practice.
Bef ore 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.
RECOMMENDATIONS FOR DUCTS CONNECTIONS
Some rules must be complied with for the connections between ducts and unit done on site.
INSTALLATION ON A ROOFMOUNTING FRAME
Fig. 7