FMI AK4 Operating instructions

FMI
Brand
FMI
Model
AK4
Category
Fireplaces
Type
Operating instructions

This manual is also suitable for

FMI AK4E is an outside combustion air kit designed for fireplaces. It helps to improve combustion efficiency and reduce indoor air pollution by supplying fresh air from outside for the fireplace to burn. The kit includes a 4 1/2" x 4 1/2" framing or opening on the exterior wall, a flex duct, and an outside air vent termination. The flex duct can extend up to 3 feet to reach the fireplace. The kit should not be installed in a location that would draw air from a garage or attic space.

FMI AK4E is an outside combustion air kit designed for fireplaces. It helps to improve combustion efficiency and reduce indoor air pollution by supplying fresh air from outside for the fireplace to burn. The kit includes a 4 1/2" x 4 1/2" framing or opening on the exterior wall, a flex duct, and an outside air vent termination. The flex duct can extend up to 3 feet to reach the fireplace. The kit should not be installed in a location that would draw air from a garage or attic space.

Outside Combustion Air Kit Installation Instructions
Models: AK4, CAK4, and AK4E
Figure 1
Figure 3
Figure 4
Figure 2
Air Vent
Seal with Hi-
Temp Duct Tape
Cut Out
Any Visible
Insulation
Insert Inner Tab of
Inlet Tube into Slot
on Outer Surround
Air Inlet Tube
Flex Duct
Locate air inlet cover plate on replace's outer surround and
remove it. Cut-out any visible insulation that may obstruct air
ow. Air inlet tube may be installed in two positions (Figure 2)
(AK4E only). Insert inner tab of inlet tube into the mating slot
next to the opening (Figure 1). Place outer tab of inlet tube
over mating hole next to the opening and secure with a screw
previously removed from cover plate. Seal any remaining gaps
around inlet tube with hi-temp duct tape or noncombustible
sealant (Figure 3 or 4).
Construct a 4 1/2" x 4 1/2" framing or opening on exterior wall
(see Figure 3 or 4). Install the outside air vent termination in
a location that would not eventually be obstructed by bushes,
snow, or other obstructions.
Also, locate the vent near the replace to make ex duct instal-
lation easier. The ex duct supplied measures approximately
10" compressed and up to approximately 3 feet extended
(Figures 3 or 4).
107726-01
REV. D
05/12
2701 S. Harbor Blvd.
Santa Ana, CA 92704
1-866-328-4537
www.fmiproducts.com
CAUTION: AIR INLET DUCTS ARE NOT TO
TERMINATE IN ATTIC SPACE.
DO NOT INSTALL VENT TERMINATION IN A LOCATION
THAT WOULD DRAW AIR FROM GARAGE OR ATTIC
SPACES.
The maximum height for the air vent can not exceed 3
feet below the ue gas outlet of the termination.
Be very careful not to distort ex duct when extending and
watch for sharpness at the edges (use gloves). Slip ex duct
onto inlet collar and vent collar. Clean ex duct surface of oil
and dirt at the ends and secure ex duct to collars with hi-temp
duct tape to provide a good seal.
SECURE AND SEAL DUCT TO COLLARS WITH HI-TEMP
DUCT TAPE (BOTH ENDS). REMOVE OIL AT ENDS OF
DUCT TO INSURE PROPER ADHESION OF DUCT TAPE
TO BE APPLIED.
BEND TABS OUT
BEFORE INSTALLING
FLEX DUCT EXTENDS
UP TO 3 FT.
OUTSIDE AIR
VENT TERMINATION
REMOVE AIR
INLET COVER
(2 SCREWS)
AIR VENT LOCATION
MUST ALLOW FOR
BUSHES, SNOW AND
OTHER POSSIBLE
OBSTRUCTIONS
CUT AND REMOVE
ANY BLOCKING
INSULATION
SEAL GAPS WITH
NONCOMBUSTIBLE
HI-TEMP SEALANT
OR DUCT TAPE
SECURE AND SEAL DUCT
TO COLLARS WITH HI-TEMP
DUCT TAPE (BOTH ENDS)
REMOVE OIL AT ENDS OF DUCT
TO INSURE PROPER ADHESION
OF DUCT TAPE TO BE APPLIED
FLEX DUCT EXTENDS
UP TO 3 FEET
OUTSIDE AIR
VENT TERMINATION
AIR VENT LOCATION
MUST ALLOW FOR
BUSHES, SNOW, AND
OTHER POSSIBLE
OBSTRUCTIONS
4
1
/2" x 4
1
/2"
FRAMED OPENING
  • Page 1 1

FMI AK4 Operating instructions

FMI
Brand
FMI
Model
AK4
Category
Fireplaces
Type
Operating instructions
This manual is also suitable for

FMI AK4E is an outside combustion air kit designed for fireplaces. It helps to improve combustion efficiency and reduce indoor air pollution by supplying fresh air from outside for the fireplace to burn. The kit includes a 4 1/2" x 4 1/2" framing or opening on the exterior wall, a flex duct, and an outside air vent termination. The flex duct can extend up to 3 feet to reach the fireplace. The kit should not be installed in a location that would draw air from a garage or attic space.

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