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LENNOX HEARTH PRODUCTS • RHAPSODY™ LINEAR DIRECT-VENT GAS FIREPLACES (MODELS RHAP42N & RHAP54N) • INSTALLATION INSTRUCTIONS
CLEARANCES
MINIMUM CLEARANCES
TO COMBUSTIBLES
The appliance is approved with zero clearance
to combustible materials on both sides (see
Table 2), with the following exceptions:
• When unit is installed with one side flush
with a wall, the wall on the other side of unit
must not extend beyond unit front edge.
• When unit is recessed, the side walls sur-
rounding the unit must not extend beyond
unit front edge (see Figure 3).
MINIMUM CLEARANCES
TO COMBUSTIBLES
Back
1/2" (12.7 mm) to unit
0" (0 mm) to spacers
Sides
1/2" (12.7 mm) to unit
0" (0 mm) to spacers
Top Spacers
0" (0 mm)
floor
0" (0 mm)
Unit Bottom to Ceiling 65" (1651 mm)
Vent Pipe
Top: 3" (76 mm)
Sides: 1" (25.4 mm)
Bottom: 1" (25.4 mm)
SERVICE CLEARANCES
front
36
3" (76 mm) above any horizontal/
inclined vent component.
See "Framing the Fireplace," Page 8,
for clearance requirements to nailing
flanges on unit sides and any adjacent
screw heads.
Table 2
RECESSEd SHELf
These direct-vent appliances are suitable for
installations with a recessed shelf above the
fireplace. See Figure 1 for clearances from
the appliance base to the underside of any
combustible material used to construct such
a shelf.
Note:
• do NOT insulate the space between
the appliance and the area above it.
• This is a heat-producing appliance.
Objects placed above the unit are
exposed to elevated temperatures.
HEARTH ExTENSION
A hearth extension is not required with this
appliance. Any installed hearth extension would
be for appearance only and does not have to
conform to standard hearth extension installa-
tion requirements.
6
Distance from Unit Base
to Bottom of Recessed
Distance from Unit Base
to Bottom of Recessed
RHAP42N = 12" straight vent section required before 90° elbow
RHAP54N = 6" straight vent section required before 90° elbow
fireplace
Model
RHAP42N 57-1/4 (1450)*
RHAP54N
*Includes 3" clearance to combustibles required
above vent components.
Figure 1: Minimum Clearance to
Combustible Recessed Shelf
(152.4 mm)
"
Figure 2: Minimum Clearances to Combustible Mantel
Figure 3: Minimum Clearances to Unprotected Side Wall
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Do NOT insulate space
between appliance and
Do NOT insulate space
area above it.
between appliance and
area above it.
Shelf (see table)
Shelf (see table)
MIN. CLEARANCE TO
COMBUSTIBLE RECESSEd SHELf
®
Secure flex
Secure Vent
in (mm)
(elbow)
in (mm)
59 (1500)*
55 (1400)*
56-3/4 (1441)*
Mantel depth
28 (711)
26 (660)
24 (610)
22 (559)
20 (508)
18 (457)
inches
12
10
(millimeters)
(305)
(254)
(203)
At 14" minimum
At 8-1/4" side
side wall clearance,
wall clearance, a
a combustible wall
combustible wall
can project to any
can project 12"
length.
14
8-1/4
(356)
(209)
MANTELS
Non-Combustible Mantels
Mantels constructed of non-combustible
material may be installed at any height above
the appliance opening; however, do NOT allow
anything to hang below the top edge of the
fireplace door.
Combustible Mantels
Clearances to combustible mantels vary ac-
cording to mantel depth. See Figure 2 for
details.
Note: Use high-temperature paint (rated 175°F
or higher) on the underside of the mantel.
UNPROTECTEd SIdE WALL
®
See Figure 3 for minimum clearances to un-
protected side walls.
fINISH/SURROUNd
IMPORTANT! The factory- supplied
non-com bustible fiber board MUST be
installed around the fireplace opening.
See Page 33 for details.
Minimum clearance requirements
include any projections such as
shelves, window sills, mantels,
etc. above the appliance.
Header
Top of
Appliance
8
6
4
2
(152)
(102)
(51)
Top View of
fireplace
Combustible Materials
Allowed In Shaded Area
"Safe Zone"
o
45
5 (127)
Combustible Walls
shown in dark gray
Combustible materials may
project beyond one side
of the fireplace opening
12 (305)
as long as they are kept
within the shaded areas
illustrated here.
Inches (millimeters)
17 (431)
Protected wall shown in white
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