Installation
900077-00, 01/2018
Innovative Hearth Products
DRL6500 Linear Direct-Vent Gas Fireplaces
31
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
NOTE: Attic insulation shield (H3908) must be installed when blown or loose-fill insulation is used, and is
recommended for all attic installations.
7.
Maintain 1” (26 mm) clearance to combustibles, framing members, and attic or ceiling insulation when running
vertical chimney sections.
Support the vertical run sections
—On the vertical run, support the venting system every
8 ft (2.4 m) above the fireplace vent outlet with field provided support straps (Plumber’s tape). Attach the straps
to the vent pipe and secure to the framing members with nails or screws (
Figure 20
).
NOTE:
Proper venting support is very important. Never use the fireplace to support the weight of the venting.
8. Change vent direction
—At transition from or to a horizontal/inclined run, install SV4.5E45 or SV4.5E90 elbows
in the same manner as the straight vent sections. The elbows feature a twist section to allow them to be routed
about the center axis of their initial collar section to align with the required direction of the next vent run element.
Twist elbow sections in a clockwise direction only so as to avoid the possibility of unlocking any of the previously
connected vent sections (
Figure 17
).
9. Continue installation of horizontal/inclined sections
—Continue with the installation of the straight vent sections
in horizontal/inclined run. Install support straps every 5 ft. (1.52 m) along horizontal/inclined vent runs using
conventional plumber’s tape or catalog number SV4.5SU (
Figure 24
). Maintain the horizontal/inclined run in a
straight (no dips), slightly elevated plane. The recommended incline is approximately 1/4” per 1 ft (20 mm per 1 m)
horizontal, in a direction away from the fireplace.
Smaller rise per foot run ratios are acceptable all the way to at or
near level.
Use a carpenter’s level to measure from a constant surface and adjust the support straps as necessary.
Maintain the required clearances to combustibles (
Page 25
).
10. Assemble the vent run to the exterior wall
—If not previously measured, locate the center of the vent at the exterior
wall. Prepare the opening. Assemble the vent system until the terminus of the last section is within 5” (127 mm) to
8-1/2” (216 mm) inboard of the exterior surface to which the SV4.5HT termination is to be attached (
Figure 25
).
If the terminus of the last section is not within this distance, use the telescopic vent section SV4.5LA, as the last
vent section.
Table 21
lists the additional venting components needed (in addition to the termination and adaptor)
for a range of wall thicknesses.
11. Attach the termination adaptor
—Attach the adaptor (SV4.5RCH, provided with the termination) to the vent section
or telescoping vent section, elbow or fireplace collar (
Figure 25
).
NOTE:
If blown insulation is to be used, the through-wall shield kit (H5816) MUST be installed.
12. Install the firestop/spacer at the exterior wall
—When using the square termination, install SV4.5HF (Secure Vent
®
),
SF4.5HF (Secure Flex
®
) Firestop/Spacer over the opening at the exterior side of the framing, long side up, with the
3” spacer clearance at the top (
Figure 25
) and nail into place.
NOTE:
The firestop/spacer may also be installed over the opening at the interior side of the framing.
13. Install the termination (
SV4.5HT-2 and SV4.5HTSS
for 42” model only
)
—From outside the exterior wall, slide
the collars of the termination onto the adaptor (the outer over the outer and the inner inside the inner) until the
termination seats against the exterior wall surface to which it will be attached. Orient the housing of the termination
with the arrow pointed upwards. Secure the termination to the exterior wall. The horizontal termination must not
be recessed into the exterior wall or siding by more than the 1-1/4” (32 mm) (
Figure 26
).
NOTE:
If the venting exits the building below grade, or close to grade, see
Installation Accessories on
Page 51
for
available snorkel terminations. The termination must be above grade and above the expected level of snow
accumulation.
NOTE:
The vent termination is hot while in operation and for a period of time following the use of the fireplace. To
prevent contact with hot surfaces, use a horizontal termination guard; available for purchase at your local dealer.
The horizontal terminations have been designed to perform in a wide range of weather conditions. Our terminations
meet or exceed industry standards.
When selecting the locations of your horizontal terminations,
do not place the termination where water from eaves
and adjoining rooflines may create a heavy flow of cascading water onto the termination cap
. If the cap must be
placed where the possibility of cascading water exists, it is the responsibility of the builder to direct the water away
from the termination cap by using gutters or other means.
Take care to carefully follow the installation instructions for the termination, including the use of silicone caulking
where required.
