MN99102 042015
– 6 –
Model 99FRD, 102CRD & EZ-66 Oil Burners — Instruction Manual
Figure 1 99FRD, EZ-66 and 102CRD Minimum combustion chamber dimensions (all dimensions in inches)
2. Prepare Site • Assemble Burner • Mount Burner
(continued)
Chamber configurations
A Chamber with water-backed floor and target wall, with refractory linings on
floor and target wall.
B Chamber with water-backed floor and target wall, with refractory lining on
target wall only.
C Chamber with water-backed floor and target wall, without refractory linings.
D Refractory chamber, no water-backed surfaces (dry base design).
E Chamber with refractory floor and water-backed target wall (
without
target
refractory lining).
F Chamber with refractory floor and water-backed target wall (
with
target refrac-
tory lining).
Notes for dimension table
1 Some tested appliances operate well with dimensions other than shown
below.
2. Generally, applications should be acceptable with dimensions larger than
listed.
3. Horizontal cylinder chambers should have a diameter at least as larger as the
minimum width listed. For steel cylinder chambers, increase this dimension
by from 1 to 4 inches.
4. Wing walls are not recommended. Corbels can be beneficial to heat distribution
in some applications.
5. DV is the minimum diameter for vertical cylindrical chambers (refractory or
refractory-lined chambers only).
Firing
rate
GPH
L
D
L
T
L
W
W
DV
C
D
C
W
H
F
Lined
Target
liner
Unlined Note 3
Note 5
Lined
Unlined
99FRD/EZ-66
0.50
7
Line floor and
target wall or
use refractory
chamber
6
7
3
NR
8
NR
0.65
7.5
7
7.5
3.5
9
0.75
8
7
8
3.5
9
0.85
10-11
12
7
8.5
3.5
4
9
5
1.00
10
11-12
13
8
9
4
4.5
10
6
1.10
11
12-13
14
8
9.5
4
4.5
10
6
1.25
1.35
1.50
1.65
1.75
2.00
2.25
2.50
2.75
3.00
102CRD
with 2
⁵⁄₈
" air cone
14
14
17
15
13
6.5
6.5
15
8
15
15
18.5
15
13.5
6.5
6.5
15
8
16
16
19.5
15.5
14.0
6.5
6.5
15.5
8
17.5
17.5
21
15.5
15.5
6.5
6.5
15.5
8
18.5
18.5
22.5
15.5
16.5
7
7
15.5
8.5
20
20
24
16
17.5
7
7
16
8.5
21
21
25
16
18.5
7
7
16
8.5
with 3" air cone
25
25
29
12
23
5
5
12
6.5
26
26
30
13
24
5.5
5.5
13
7
27
27
31
13.5
24
6
6
13.5
7.5
28
28
32.5
14
25
6
6
14
7.5
4.00
29
29
34
14.5
26
7
7
14.5
8.5
4.25
30
30
35
15.5
27
7
7
15.5
8.5
4.50
31
31
36
17
28
7.5
7.5
17
9
