25
Earthcore Industries
01/2020
Isokern Maximus Linear Series Gas Fireplace
Access Modification - Combustion Air Kits, Gas & Electrical Line Feed
Cooling Combustion air inlet kits are required by
Earthcore and may help improve fireplace operation in
homes tightly sealed and with other ventilating appliances
installed
(Figures 17 and 18)
. The 48” Linear Model
requires one combustion air kit and the 72”, 96”, & 120” all
require two combustion air kits. The following is a general
representation of a combustion air kit that is required by
Earthcore Industries.
The combustion air kit consist of a sliding stainless
steel or black access door affixed to a four inch (4”) in
diameter stainless steel sleeve approximately five inches
(5”) long to the air collector box at the front of the fireplace.
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 is included.
The air combustion kit is to be installed with the unit
so that the fireplace does not use inside room air. The
combustion air kit will bring in air from the outside and flow
up through the front of the Isokern Maximus Linear unit
to keep the glass temperatures cool. The air will exhaust
through the fireplace unit out through the 12” B Vent Pipe
that is mechanically exhausted with a fan unit. No room air
will be utilized with the fireplace.
We recommend that the duct leads to the source for
outside combustion air, as directly as possible from the
fireplace.
We recommend not to exceed twenty feet (20’) of four
inch (4”) pipe. If you require a longer length we recommend
that you use a six inch (6”) diameter pipe for the complete
run of up to forty feet (40’).
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 ducts
shall not terminate in attic, basement or garage spaces.
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.
ELECTRICAL LINE FEED
Can be routed through the LINEAR firebox side walls by
drilling an appropriately sized hole using a masonry drill
bit. 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.
Flex Duct To Fireplace
(All Parts Noncombustible)
Exterior
Wall
Exterior Air Vent
With Dress Plate
Typical Placement of
Gas or Electric Conduit
(See Detail Below)
CAUTION:
All access holes must be
grouted with mortar - after
line or conduit feed to seal
any gaps or cracks around line
feed conduits
Fire Brick Side
Gas or Electric
Conduit
NOTE: Fill Any Gaps
Around Conduit with Mortar
FIGURE 17
FIGURE18
FIGURE 19
Flex Duct To Fireplace
(All Parts Noncombustible)
Exterior
Wall
Exterior Air Vent
With Dress Plate
Typical Placement of
Gas or Electric Conduit
(See Detail Below)
CAUTION:
All access holes must be
grouted with mortar - after
line or conduit feed to seal
any gaps or cracks around line
feed conduits
Fire Brick Side
Gas or Electric
Conduit
NOTE: Fill Any Gaps
Around Conduit with Mortar
