AROUND CONDUIT WITH
NOTE: FILL ANY GAPS
MORTAR.
NON-COMBUSTIBLE).
TYPICAL PLACEMENT OF
(SEE DETAIL BELOW).
SUPPLY AIR VENTILATION
(IF REQUIRED BY CODE).
GAS OR ELECTRIC CONDUIT
FIRE BRICK SIDE
CONDUIT
GAS OR ELECTRIC
EXTERIOR
EXTERIOR AIR VENT
WITH DRESS PLATE.
WALL
FLEX DUCT TO FIREPLACE
FIREBOX, (ALL PARTS
18
Assembly Instructions - Access Modification
Through-Wall Accesses:
1. Combustion Air Inlet: Combustion air inlet kits though
not required by Isokern may help improve fireplace
operation in homes tightly sealed and with other ventilating
appliances installed (Figures 19 & 20).
Check local codes
for combustion air inlet requirements.
The following is a general representation of
a generic combustion air kit and not a requirement of
Earthcore Industries, LLC. Local building codes prevail
and should be checked before installation.
Generic fireplace combustion air kits typically
consist of a sliding stainless steel access door affixed to a
three inch (3”) or four inch (4”) diameter stainless steel sleeve
approximately twelve inches (12”) long. An exterior vent
with dress plate, weather hood and rodent prevention screen
of a maximum one-quarter inch (1/4”) wire mesh completes
the kit. (Figure 19)
The access door is fitted into the finished fire brick
lining at the interior sidewall of the MAGNUM firebox. The
twelve inch (12”) long sleeve can be introduced into the
firebox side wall or back wall by core drilling an appropriately
sized hole at the selected firebox location. Keep the top of the
four inch (4”) diameter access hole no more than six inches
(6”) above the finished firebrick floor. The hole size should
allow for a one-quarter inch (1/4”) mortar joint around the air
access sleeve for heat expansion.
The sleeve passes through the firebox wall and must
be connected to metal pipe (by other) - either flexible or
rigid - that leads to the source for outside combustion air, as
directly as possible from the Magnum Fireplace (Few to no
bends) with a maximum length of sixty feet (60’).
WARNING:
Do not use combustible duct material. Avoid
installing a combustion air inlet where the opening could be
blocked by snow, bushes or other obstacles. Air inlet must
terminate a minimum of three feet below the chimney cap
level. Air inlet ducts shall not terminate in attic spaces.
2. Gas Line Feed: For a fireplace having the provision for
installation of a gas pipe, the provision is intended only for
connection to a decorative gas appliance.
CAUTION:
When using the decorative appliance, the
fireplace damper must be set in the fully open position.
Gas line for gas log sets used in the Isokern firebox can be
routed through the side wall, back wall or floor of the firebox
by drilling an appropriately sized hole using a masonry drill
bit (Figure 20).
3. Electrical Line Feed can be routed through the MAGNUM
firebox back wall, side walls or floor by drilling an
appropriately sized hole using a masonry drill bit (Figure
20). Be sure to follow the gas log Appliance Manufacturer’s
explicit electrical line connection instructions for vented
masonry fireplace installations. Gas line and electric line
must be fed through separate access holes.
FIGURE 21
FIGURE 19
CAUTION:
All access holes must
be grouted with mortar – after line or
conduit feed - to seal any gaps or cracks
around line feed conduits
(Figure 21).
FIGURE 20
