Clearances; Installing The Standoffs; Installing The Nailing Flange Extension - Montigo H34DF Installation & Maintenance Manual

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 2" from the rear
of the fireplace to a wall, or any combustible materials. A clearance
to combustibles of 9" for H34DF*& HR34DF* and a clearance to
combustibles of 11" for HC34DF* , & HL34DF* is required to the
underside of any combustible shelf materials, Figure 3.
For Top Vent applications, the minimum clearance is 2" 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.
For Top or Rear Vent applications where the Minimum mantel height
is required above the fireplace, (for an alcove or low profile shelf), ALL
Materials MUST BE nOn-COMBUSTIBLE, Figure 5. The minimum
clearance is 2" from the rear of the fireplace to a wall, or any combustible
materials. 1" clearance is maintained on sides and bottom of vent runs
and 2" above horizontal vent runs to any combustible material.
H34DF* 9
HC34DF* 11
HL34DF* 11
HR34DF* 9
† note: Clearance from top of fireplace to a combustible ceiling within
the fireplace enclosure.
XG0146 - 050211.1
Installation
17 1/2 2 1 0 6
17 1/2 2 1 0 6
17 1/2 2 1 0 6
17 1/2 2 1 0 6

Installing The Standoffs

To avoid elevated mantel temperatures, all H*34DF*-Series 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 - HC34DF* Only
Once the fireplace is placed into the rough framed opening, the supplied
nailing flange extension (Part No. HC34074) must be fasten securely
into place, with nails or wood screws. as shown in Figure 7.
Front View
Figure 7. Installing the Nailing Flange Extension, see , Figure 25a.
The supplied nailing flange extension must be placed along the top
edge of the fireplace and securely fastened in place to the combustible
wood framing.
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.
H*34DF Indoor Gas Fireplace
6"
6"
3"
Side View
Page 7