Valor 1700IN Installation & Owner's Manual page 36

QUALIFIED
INSTALLER
Wall Finishing
Non-combustible cement board
The L2 Linear fi replace requires a 1/2"
(13 mm) thick non-combustible cement
board to be used as a wall surface
immediately surrounding the unit on each
side—see diagram below for minimum
coverage.
Extending the cement board well beyond
the minimum shown will help avoid cracking
due to differential expansion of materials.
Cement board may be screwed—using
cement board screws—to the front sheet
metal face of the heater in indicated areas
only. Maximum recommended screw
length: 1-1/4". Pre-drill cement board with
oversized holes and do not over-tighten
screws to avoid cracking due to heat
expansion.
Standard gypsum wall board may be used
beyond the perimeter of the cement board.
Finishing around trims
Additional non-combustible material such
as tile, etc., may be applied over top of the
wall surface or you may choose to leave it
fi nished clean with no tile, etc. Be aware
that a trim is always required and that only
the wider 1750 style trim will accept tile,
etc. tucked behind it (up to 1 inch thick).
Additional non-combustible fi nishes may
be butted up to the narrow 1755 trim or the
1770RCS GRC trim but should not cover
these trims.
1 /
( 2
4 "
3 5
m
m
)
Wider trim (1750)
can adjust up to 1" off
surface of cement board
36
Appliance Preparation
(1130 mm)
Minimum cement board dimensions
P o
s s i
( i n
b l e
t h
s c r
e d
e w
e s
i g n
l o c
a t e
d
Narrow trim (1755)
mounts directly over
the cement board
Gypsum board
up to perimeter
of cement board
Min.
20-1/2"
(521 mm)
Min.
44-1/2"
Possible screw
locations
14-3/4"
(375 mm)
Min.
9-1/4"
(235 mm)
Board flush with
bottom of heater;
add extra if
overlapping
Possible screw
framing.
locations (in the
designated space)
Maximum recommended
screw length 1-1/4"
a r d
o f
f l u
h e
s h
o v
a t e
e r l
w i
r ; a
a p t h
d d
p i n b o
e x
g f
t r a
r a m
i n g
Min. 60"
(1524 mm)
50"
(1270 mm)
Joints preferred
at corners to
prevent cracking
1/2" (13mm) thick
non-combustible
cement board
Wider trim (1770)
mounts directly over
the cement board