OPEL PLUS KEYSTONE Owner's Manual
21
RSF Woodburning Fireplaces
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.
You can make a cold air trap by looping the outside air
duct as shown in Figure 7 and Figure 8.
❖
CAUTION: WHEN RUNNING THE DUCT
AROUND CORNERS, BE SURE TO PREVENT
CRIMPING THE DUCT THAT WOULD RESTRICT
THE COMBUSTION AIR FLOW.
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 OPEL+ KEYSTONE fireplace.
We recommend that the minimum height be increased by approximately 6" for every 1000' elevation above sea
level. Every 15°, 30° or 45° offset (one pair of elbows) also increases the minimum height. See Table 3 for more
precise recommended flue heights.
For example, if you are living 6015' above sea level, your chimney should terminate at least 15' from the top of the
fireplace if it is a straight chimney or at least 18'6" if one 30° offset is used as shown in Table 3.
Table 3 Minimum Recommended Flue Height
Elevation (ft)
Number Of Offset
Straight
Chimney
1 x 15°
2 x 15°
1 x 30°
2 x 30°
1 x 45°
2 x 45°
0 - 1000
Minimum
12’
13’
14’
15’
18’
16’
20’
1001 - 2000
12’6”
13’6”
14’6”
15’6”
19’
16’6”
20’
2001 - 3000
13’
14’
15’
16’
19’6”
17’
21’6”
3001 - 4000
13’6”
14’6”
15’6”
17’
20’
18’
22’6”
4001 - 5000
14’
15’
16’
17’6”
21’
18’6”
23’
5001 - 6000
14’6”
15’6”
17’
18’
21’6”
19’
24’
6001 - 7000
15’
16’
17’6”
18’6”
22’
20’
24’6”
7001 - 8000
15’6”
16’6”
18’
19’
23’
20’6”
25’6”
8001 - 9000
16’
17’
18’6”
20’
24’
21’
26’6”
9001 - 10000
16’6”
17’6”
19’
20’6”
24’6”
22’
27’
Flue height is measured from the top of the fireplace to the top of the chimney before installing the rain cap.
If you have two different offsets (two pairs of different elbows), simply use the column for two offsets of the biggest
pair of elbows at your elevation to get your Minimum Flue Height.
Figure 10 Outside Air Connection and Installation
Example
Above Floor
Example
Below Floor
Example
RSF
Fir
ep
lac
e
RSF
Fir
ep
lac
e
RSF
Fir
ep
lac
e
2" Aluminium
Duct Tape
Insulated Flexible Air Duct
Outside Wall
Outside Air
Inlet
