FOCUS 320 Owner's Manual
15
RSF Woodburning Fireplaces
SECURING THE FIREPLACE IN PLACE
Once the fireplace is in its final location, take the time to attach it to the floor. Using at least two of the five small
brackets that were securing the fireplace to the crate, attach the casing of the fireplace to the floor. If possible, try
to have at least one, if not two, of the brackets screwed into the floor joists with 2" wood screws.
OUTSIDE AIR DUCT
After the fireplace is correctly positioned, connect the
outside air inlet to the fireplace.
Use an insulated aluminium flexible duct rated at over
200° F. The duct should not exceed 12' vertical rise
above the base of the unit. We suggest using the 4"
RSF outside air kit (FO-INT).
The air inlet should never be less than 5' below the
top of the chimney flue and must never terminate
in attic spaces.
A 4" diameter duct can be used if the total duct run is
less than 25'. For longer runs, use 5" diameter duct.
Both 4" and 5" connecting sleeves are provided with
the fireplace.
1. Find a convenient location for the insulated flexible
duct and outside air inlet. The outside air inlet can
be above or below floor level (see Figure 7).
2. Make a 4 ¼" (5 ¼" if using a 5" diameter duct)
hole in the outside wall of the house. Push the outside air inlet in from the outside. Seal the joint between the
air inlet and the outside wall with an appropriate sealant.
3. Place the insulated flexible duct over the round sleeve on the outside air inlet. At both ends, carefully pull
back the insulation and plastic cover, exposing the flexible duct. Then at each end, attach the duct with metal
screws to the air inlet and to the fireplace connecting sleeve. Carefully push the insulation and cover back
over the duct. Tape the plastic cover in place with 2" aluminium duct tape.
CAUTION: WHEN RUNNING THE DUCT AROUND CORNERS, BE SURE TO PREVENT CRIMPING THE
DUCT IN A WAY THAT WOULD RESTRICT THE COMBUSTION AIRFLOW.
CHIMNEY
This fireplace is certified for use with 7" ICC Model EXCEL chimney only. Please refer to Table 1 (D-E) for the
minimum and maximum chimney height permitted with the FOCUS 320 fireplace.
Table 3 Minimum Recommended Flue Heights In Feet From The Top Of The Fireplace
Elevation (ft)
Number Of Elbows
0
2 x 15°
4 x 15°
2 x 30°
4 x 30°
2 x 45°
4 x 45°
0
-
1000 12’ 13’ 14’ 15’ 18’ 16’ 20’
1000 - 2000
12’6”
13’6”
14’6” 15’6” 19’ 16’6” 20’
2000 - 3000
13’
14’
15’
16’
19’6”
17’
21’6”
3000 - 4000
13’6”
14’6”
15’6”
17’
20’
18’
22’6”
4000 - 5000
14’
15’
16’
17’6”
21’
18’6”
23’
5000 - 6000
14’6”
15’6”
17’
18’
21’6”
19’
24’
6000 - 7000
15’
16’
17’6”
18’6”
22’
20’
24’6”
7000 - 8000
15’6”
16’6”
18’
19’
23’
20’6”
25’6”
8000 - 9000
16’
17’
18’6”
20’
24’
21’
26’6”
9000 - 10000
16’6”
17’6”
19’
20’6”
24’6”
22’
27’
Figure 7 Outside Air Connection and Installation
Example
Above Floor
Example
Below Floor
Example
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2" Aluminium
Duct Tape
Insulated Flexible Air Duct
Outside Wall
Outside Air
Inlet
