26284-3-0813
Page 7
Before installing in a solid fuel burning fireplace, the chimney flue
and firebox must be cleaned of soot, creosote, ashes and loose
paint by a qualified chimney cleaner.
You must secure the gas log heater to the fireplace floor. If
not, the entire unit may move when you adjust the controls.
Movement of unit may cause shifting of the gas logs which
leads to sooting and improper burning. Grate movement
could cause a gas leak.
special care is required if you are installing the unit into a
sunken fireplace. You must raise the fireplace floor to allow
access to gas log controls. This will insure adequate air
flow and guard against sooting. Raise the fireplace floor
using noncombustible materials.
1. Center the gas log in the fireplace or firebox. The grates must
clear the fireplace or firebox screen.
2. An anchor hole is provided in the two bottom side members of
the grate frame. After centering the grate correctly, mark the
hole positions on the fireplace/firebox floor. Drill two (2) 5/32"
diameter holes approximately 1-1/2" deep for masonry screws
or 1/8" hole for sheet metal screws.
3. Anchor the grate to the fireplace/firebox floor using the screws
provided.
Proper installation of the grate is essential to prevent any move-
ment of the gas logs and controls during operation.
Figure 3
BEFoRE Fully INsTAllING THE APPlIANcE
FoR FAcToRy BuIlT FIREPlAcEs
FRee OPeNING AReA OF CHIMNeY dAMPeR FOR VeNT-
ING COMbusTION PROduCTs FROM deCORATIVe AP-
PlIANcEs FoR INsTAllATIoN IN solId FuEl BuRNING
FIRePlACes.
Appliance Input Rate (kbTu/hr)
20
30
40
50
60
70
80
Chimney
Height*
(ft)
Minimum Opening** (sq. in.)
10
11.3
16.6
22.1
28.3
35.3
44.2
-
15
8.6
12.6
17.3
21.2
26.4
32.2
31.2
20
7.5
10.8
14.5
18.1
22.1
26.4
31.2
25
6.6
9.6
12.6
15.9
18.1
22.9
27.3
30
6.2
9.1
11.3
14.5
17.3
20.4
24.6
35
5.7
8.0
10.8
13.2
15.9
18.9
22.1
40
5.3
7.5
10.2
12.6
15.2
18.1
20.4
Appliance Input Rate KW/HR)
5.9
8.8
11.7
14.6
17.6
20.5
23.4
Chimney
Height*
(m)
Minimum Opening** (sq. in.)
3.05
72.9
107.1
142.6
182.6
227.8
285.2
-
4.57
55.5
81.3
111.6
136.8
170.3
207.8
248.4
6.10
48.4
69.7
93.6
116.8
142.6
170.3
201.3
7.62
42.6
61.9
81.3
102.6
116.8
147.8
176.1
9.14
40.0
58.7
72.9
93.6
111.6
131.6
158.7
10.67
36.8
51.6
69.7
85.2
102.6
121.9
142.6
12.19
34.2
48.4
65.8
81.3
98.1
116.8
131.6
*
Height is from hearth to top of chimney and the minimum height is
10 feet (3.05m).
** Chart shows minimum opening (sq. in.) (cm
2
) for given height and
input rate.
FOR MAsONRY buIlT FIRePlACes
FRee OPeNING AReA OF CHIMNeY dAMPeR FOR VeNTING COM-
busTION PROduCTs FROM deCORATIVe APPlIANCes FOR IN-
sTAllATION IN sOlId Fuel buRNING FIRePlACes.
Appliance Input Rate (kbTu/hr)
20
30
40
50
60
70
80
Chimney
Height*
(ft)
Minimum Opening** (sq. in.)
6
17.6
25.7
33.8
41.7
49.2
56.6
64.0
8
16.5
23.7
31.2
38.7
45.5
52.4
59.7
10
15.1
21.7
28.7
35.2
41.7
48.2
54.3
15
14.1
19.9
26.1
32.0
37.7
43.2
48.8
20
12.9
18.5
23.7
28.8
34.3
39.8
44.4
30
12.2
16.9
21.6
26.5
31.2
35.9
40.3
Appliance Input Rate KW/HR)
5.9
8.8
11.7
14.6
17.6
20.5
23.4
Chimney
Height*
(m)
Minimum Opening** (sq. in.)
1.83
113.6
165.8
218.1
269.0
317.4
365.2
412.9
2.44
106.5
152.9
201.3
249.7
293.6
338.1
385.2
3.05
97.4
140.0
185.2
227.1
269.0
311.0
350.3
4.57
91.0
128.4
168.4
206.5
243.2
278.7
314.8
6.10
83.2
119.4
152.9
185.8
221.3
256.8
286.5
9.14
78.7
109.0
139.4
171.0
201.3
231.6
260.0
*
Height is from hearth to top of chimney and the minimum height is 6
feet (1.83m).
** Chart shows minimum opening (sq. in.) (cm
2
) for given height and
input rate.
