Installation
900994-00K, 07/2021
Innovative Hearth Products
DRL2000 & DRL3500 Series Direct-Vent Gas Fireplaces
40
2.
Install the outer Flex Pipe.
a.
Install the large gear clamp loosely around the outer flexible vent pipe, then push it back out of the way.
b.
Apply a bead of Mill-Pac Black (700 °F) high temperature sealant (P/N 10K81) to the outer adaptor collar.
Cover to the grooves of the collar that extend approximately 1” from the end and to the flat surface,
approximately 1 3/8” from the end.
c.
Pull and extend the outer flexible vent.
d.
Slide the outer flexible vent over the adaptor collar. Ensure the flexible vent completely engages the adaptor collar
1-3/4” from the end, and that it is free from damage or tears.
e.
Slide the gear clamp down and tighten it fully to secure the flexible vent to the adaptor outer collar
approximately 3/4” from the end of the flexible vent.
f.
Install three (3) sheet metal screws 120° apart through the flexible vent and into the adaptor collar just
below the gear clamp to provide additional security to the connection.
3.
Route the flexible vent.
NOTE:
Ensure that the flexible vent is properly routed to provide the required clearance. Do NOT allow the flexible vent
to bend in a radius tighter than 5” (127 mm)
(
Figure 30, Page 39
)
. Place the internal flexible vent spacers evenly and
avoid kinking the inner vent. Support horizontal sections of flexible vent with metal straps at 2 ft (0.61 m) intervals.
4.
Install firestop/spacers at ceiling and wall penetrations.
• SF4.5VF firestop/spacer for ceilings
• SF4.5HF firestop/spacer for walls
NOTE:
See the appropriate sections and figures shown throughout the venting section for installation
requirements.
5.
Attach the flexible vent to the termination.
NOTE:
Secure Flex
®
components can be purchased separately and attached to bulk lengths of Secure Flex
flexible vent cut to size at the job site. Attach the flexible vent to the Secure Flex terminations as it was attached
to the adaptor
(
Figure 29, Page 39
)
.
NOTE:
Attach Secure Flex vent to Secure Flex terminations only. Do NOT substitute Secure Vent
®
terminations
or Secure Vent adaptor for Secure Flex components. Secure Flex termination and adaptor collars are a
different circumference than Secure Vent collars. Secure Flex vent has an longer center tube to improve
ease-of-installation.
f i r e - p a r t s . c o m
