NOTE: DIAGRAMS AND ILLUSTRATIONS ARE REPRESENTATIVE AND ARE NOT DRAWN TO SCALE.
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15
LENNOX HEARTH PRODUCTS • RHAPSODY™ LINEAR DIRECT-VENT GAS FIREPLACES (MODEL RHAP54N) • INSTALLATION INSTRUCTIONS
NOTICE:
It is important to install
horizontal runs on a steady, (i.e., no
“dips”), slightly positive incline of
approximately 1/4 inch rise-per-foot (20
millimeters rise-per-meter) horizontal,
in a direction away from the fireplace.
(Slightly smaller rise-per-foot run ratios
are acceptable.) Use a carpenter’s level
to measure from a constant surface, and
adjust support straps as necessary.
Supporting Horizontal Vent Runs
See Figure 15-2. Install support straps every
5 ft (1.524 m) along horizontal/inclined
vent runs using Use Support Straps (cat. no.
SV4.5SU; see “Accessory” section in this
manual) or conventional plumber’s tape (not
provided).
Figure 15-1: Vertical Venting Support
Blocking
Support Straps
(e.g., plumber’s tape;
not provided)
See “MINIMUM
CLEARANCES TO
COMBUSTIBLES"
in this manual.
Support vertical venting
every 8 feet (2.4 m) above
appliance vent outlet.
VENT RUN SUPPORT
REqUIREMENTS
Supporting Vertical Vent Runs
Note: Proper venting support is very
important. NEVER use the fireplace to
support the weight of the venting.
Support the vertical portion of the venting
system every 8 feet (2.4 m) above the fire
-
place vent outlet (see Figure 15-1).
Use Support Straps (cat. no. SV4.5SU;
see “Accessory” section in this manual) or
conventional plumber’s tape (not provided).
Secure the plumber’s tape to the framing
members with nails or screws. Loop the
plumber’s tape around the vent, securing the
ends of the tape to the framing. Use #6 x
1/2" sheet metal screws to secure the support
straps to the vent pipe.
Figure 15-2: Typical Horizontal Termination System
Building
Support
framing
Horizontal
Support
Brackets
90° Elbow
Vertical
Rise
Ceiling
Vertical
firestop/
Spacer
u
Horizontal
Termination
Exterior
Wall
Min. 6" Vertical Section
and One 90° Elbow
Support vertical venting every
8 ft (2.4 m) above fireplace vent
outlet (see "Supporting Vertical
Vent runs" on this page).
Horizontal/Inclined Run
Place horizontal support brackets
every 5 ft (1.524 m).
fireplace
Straight Vent
Sections
Horizontal
firestop/
Spacer
u
Horizontal
Termination
VENTINg INSTALLATION
(CONTINUEd)