Montigo H42DF - Manual (Page 9)

H*42DF Indoor Gas Fireplace
Page 9 XG0148 - 150204.1
Installation
Figure 9a. Flue cover and collar installation, Rear Vented fireplace
8” Outer Flue Collar
5” Inner Flue Collar
Flue Gasket
Flue Cover Plate
Clearances
When installing a shelf over the top of the fireplaces, the following
guidelines must be adhered to:
For Rear Vent applications, the minimum clearance is 1" from the rear
of the fireplace to a wall, or any combustible materials, and 9" clearance
from the top of the fireplace to the underside of any combustible shelf
materials.
For Top Vent applications, the minimum clearance is 1" from the rear
of the fireplace to a wall, or any combustible materials, and 17 1/2" to
the underside of any combustible shelf materials, Figure 4.
1” clearance is maintained on sides and bottom of vent runs and 2”
above horizontal vent runs to any combustible material.
The fireplace clearances:
H*42DF 9" 17 1/2" 1" 1" 0 See Section 6
Finishing around
the fireplace
MODEL Top - Rear V
ent
†
Top - T
op V
ent
†
Back Sides Floor Mantel
6”
Figure 7. Installing the Nailing Flange Extension.
Installing The Standoffs
To avoid elevated mantel temperatures, all H*42DF* gas
fireplaces are required to have the supplied standoffs installed.
The fireplace is supplied with two standoffs. Bend and install these
standoffs on top of the fireplace ensuring that the height of the standoff
maintains a 6" clearance.
Figure 6. Installing the standoff's.
Installing the Nailing Flange Extension
Once the fireplace is placed into the rough framed opening, the supplied
Nailing Flange (Part No. H42074) must be fasten securely into place,
with nails or wood screws. as shown in Figure 7.
Note: The nailing flange extension can be substituted with a piece of
NON-Combustible material of the same size and thermal characteristics,
ie: cement board or equivalent. This is recommended in applications
where the facing materials will not adhere to the metal nailing flange.
6"
† Note: Clearance from top of fireplace to a ceiling within the fireplace
enclosure.