Enviro ENVIRO - Manual (Page 25)

25
Figure 39: Cathedral Ceiling Support Box
Installation.
Initial Installation
QUALIFIED INSTALLERS ONLY
Figure 40: Corner installation rear vented with
snorkel.
Figure 41: Corner installation top vented.
C
ORNER
I
NSTALLATIONS
:
Do not interfere with the structural integrity of the walls.
For installations with a 36” (915 mm) snorkel refer to Figure 40 and I
NITIAL
I
NSTALLATION
- V
ENT
C
ONFIGURATIONS
AND
R
ESTRICTOR
S
ETTINGS
. For other corner installations refer to Figure 41 and I
NITIAL
I
NSTALLATION
- V
ENT
C
ONFIGURATIONS AND
R
ESTRICTOR
S
ETTINGS
.
Also refer to I
NITIAL
I
NSTALLATION
- C
LEARANCES TO
C
OMBUSTIBLES
.
5. Using tin snips, cut the “Support Box” from the top corners
down to the roof line, and fold the resulting flaps over the
roof sheathing (Figure 39). Before nailing it in to the roof,
run a bead of non-hardening mastic around the top edges
of the “Support Box”, to make a seal between the box and
the roof. Clean out any combustible material from the
inside of the “Support Box”.
6. Complete the cathedral ceiling installation by following the
same procedures outlined in Steps 4 through 9 for I
NITIAL
I
NSTALLATION
- V
ERTICAL
I
NSTALLATION
.