Venting And Installation - White Mountain Hearth Dv25IN33L-1 Installation Instructions And Owner's Manual

1. Before beginning, remove glass door and log package from
unit. Also check to make sure there is no hidden damage to
the unit. Take a minute and plan out the gas, venting and elec-
trical route. It is best to start with the gas line first, followed
by the chimney liner and electrical supply requirements.
2. Minimum fireplace opening requirements are shown in
Figure 2 of this installation manual. The firebrick (refrac-
tory), glass doors, screen rails, screen mesh and log grates
can be removed from a factory built fireplace in order to gain
minimum gas insert opening requirements prior to installing
the gas fireplace insert.
3. This insert requires no hearth extensions. Combustible ma-
terial on the floor may be installed up to the insert. Do not
obstruct the lower louver of the insert. The original fireplace
cannot be returned to solid fuel in this condition.
4. The metal floor of the solid fuel firebox may be removed to
facilitate the installation of the insert. CLEARANCE TO
COMBUSTIBLE MATERIAL UNDER THE INSERT IS
1/4". YOU MUST USE THE LEVELING LEGS TO RAISE
THE INSERT A MINIMUM OF 1/4" IF THE INSERT IS
TO SIT ON COMBUSTIBLE MATERIAL. The side walls
and top structure of the firebox may not be altered with the
exception of removable baffles and dampers. Smoke shields,
shelves and baffles may be removed if attached with me-
chanical fasteners. The original fireplace cannot be returned
to solid fuel in this condition.
5. Combustible facing material may be installed over the
original combustible facing material on the solid fuel fire-
place. The original specified clearances of a factory-built
fireplace must be maintained, with the exception of the
hearth. Clearances on a masonry fireplace must be main-
tained at 12" from the opening for combustible projections
over 1 1/2". Clearances for combustible projections under
1 1/2" must be maintained at 6" from the opening per
NFPA211. Plan the surround size accordingly. A surround
must be used with the insert. UNDER NO CIRCUMSTANCE
CAN COMBUSTIBLE MATERIAL BE PLACED BEHIND
THE SURROUND!
6. The insert surround is tested and approved with this gas insert
and may cover existing air circulation vents or grills on the
solid fuel fireplace it is installed into. If the surround does
not cover the entire ventilation grill surface, the exposed grill
area should be left open.
NOTE: Surround panel kits have been tested and approved to
cover existing air circulation vents or grills.
noTE: Cutting of sheet metal parts of a fireplace in order to
install the fireplace insert is prohibited.
WARNING: Only the surround as supplied may be used
to cover integral grills on the solid fuel-burning fireplace.
No other components such as shrouds, sheet metal plates,
etc. may be used to seal off vents.
Page 10

vENTING AND INSTALLATION

7. To assure top performance, safety and efficiency, inserts must
be installed with an approved flue liner as per CAN/CGA
B-149 or National Fuel Code ANSI Z223 and these instruc-
tions.
Note: The following statement is also provided on a separate
label plate in the instruction packet. prior to installation of
the fireplace insert, the installer must mechanically secure this
warning plate to the inside of the fireplace for future reference
as required.
WARnInG: The solid fuel fireplace has been converted
for use with gas only and cannot be used for burning wood
or solid fuels unless all original parts have been replaced
and the fireplace has been reapproved by the authority
having jurisdiction.
8. The solid fuel fireplaces' flue damper must be fully locked
in the open position or removed for installation of the gas
fireplace insert.
9. The fireplace and fireplace chimney must be cleaned and in
good working order and constructed of noncombustible ma-
terials.
10. Make sure that all chimney cleanouts fit properly so air can-
not leak into the chimney.
11. Install the insert without the surround panels attached and
make all gas, venting, and electrical connections.
If the factory built fireplace does not have gas access holes
provided, an access hole of 1 1/2" diameter (37.5mm) or
less may be drilled through the lower sides or bottom of
the firebox in a proper workmanship like manner. This
access hole must be plugged with a non-combustible insu-
lation after the gas supply line has been installed.
12. To complete the installation, install surround panel assembly.
Please refer to instructions included with the surround panel
kit.
Ensure there are no obstructions to side air passages of
decorative trim once installed on insert.
INSTALLING THE vENT SYSTEM
vent System Installation precautions
Before starting installation of vent kits, the installer should read
these instructions and the Vent Kit Instructions to ensure that a
proper vent installation is completed. Consult your local Building
Codes before beginning the Installation.
WARNING: THIS GAS INSERT AND vENT ASSEMBLY
MUST BE vENTED DIRECTLY TO THE OUTSIDE
AND MUST NEvER BE ATTACHED TO A CHIMNEY
SERvING A SEpARATE SOLID FUEL BURNING
AppLIANCE. EACH GAS AppLIANCE MUST USE
A SEpARATE vENT SYSTEM. COMMON vENT
SYSTEMS ARE pROHIBITED.
23015-9-1108