United States (inches)
Model
A
B
C
D
CRV-B-2
4
12
56
30
CRV-B-4
4
12
56
30
CRV-B-6
4
12
56
30
CRV-B-8
4
12
56
30
CRV-B-9
— —
—
—
CRV-B-10 8
12
60
42
CRV-B-12 8
12
60
42
CRV-B-12A 8
12
60
42
Canada (inches)
Model
A
B
C
D
CRV-B-2
4
10
56
30
CRV-B-4
4
10
56
30
CRV-B-6
4
10
56
30
CRV-B-8
4
10
56
30
CRV-B-9
8
12
60
42
CRV-B-10 8
12
60
42
CRV-B-12 8
12
60
42
CRV-B-12A 8
12
60
42
Canada - (centimeters)
Model
A
B
C
D
CRV-B-2
10 25
142 76
CRV-B-4
10 25
142 76
CRV-B-6
10 25
142 76
CRV-B-8
10 25
142 76
CRV-B-9
20 30
152 107
CRV-B-10 20 30
152 107
CRV-B-12 20 30
152 107
CRV-B-12A 20 30
152 107
United States (inches)
Model
A
B
C
D
CRV-B-2
4
24
48
24
CRV-B-4
4
24
48
24
CRV-B-6
4
24
48
24
CRV-B-8
4
24
48
24
CRV-B-9
— —
—
—
CRV-B-10 4
36
48
36
CRV-B-12 4
36
48
36
CRV-B-12A 4
36
48
36
Canada (inches)
Model
A
B
C
D
CRV-B-2
4
24
48
24
CRV-B-4
4
24
48
24
CRV-B-6
4
24
48
24
CRV-B-8
4
24
48
24
CRV-B-9
4
36
48
36
CRV-B-10 4
36
48
36
CRV-B-12 4
36
48
36
CRV-B-12A 4
36
48
36
Canada - (centimeters)
Model
A
B
C
D
CRV-B-2
10 61
122 61
CRV-B-4
10 61
122 61
CRV-B-6
10 61
122 61
CRV-B-8
10 61
122 61
CRV-B-9
10 91
122 91
CRV-B-10 10 91
122 91
CRV-B-12 10 91
122 91
CRV-B-12A 10 91
122 91
ROBERTS
-
GORDON
NOTE: 1. All dimensions are from the tube surface.
2. Clearances B, C and D can be reduced by 50% after 25’ (7 m) of tubing downstream
from where the burner and transition tube connect.
3. For Brooder Clearances, use United States clearances.
4. “-” indicates an unapproved application. Roberts-Gordon does not allow the installation of
unapproved applications.
Clearances to Combustibles
15
UNIVERSAL SHIELD (POSITION 1)
UNIVERSAL SHIELD (POSITION 2)
UNIVERSAL SHIELD (POSITION 3)
FIGURE 10.
FIGURE 11.
FIGURE 12.
United States (inches)
Model
A
B
C
D
CRV-B-2
4
12
12
12
CRV-B-4
4
12
12
12
CRV-B-6
4
12
12
12
CRV-B-8
4
12
12
12
CRV-B-9
— —
—
—
CRV-B-10 8
18
24
18
CRV-B-12 8
18
24
18
CRV-B-12A 8
18
24
18
Canada (inches)
Model
A
B
C
D
CRV-B-2
4
12
12
12
CRV-B-4
4
12
12
12
CRV-B-6
4
12
12
12
CRV-B-8
4
12
12
12
CRV-B-9
8
18
24
18
CRV-B-10 8
18
24
18
CRV-B-12 8
18
24
18
CRV-B-12A 8
18
24
18
Canada - (centimeters)
Model
A
B
C
D
CRV-B-2
10 30
30
30
CRV-B-4
10 30
30
30
CRV-B-6
10 30
30
30
CRV-B-8
10 30
30
30
CRV-B-9
20 46
61
46
CRV-B-10 20 46
61
46
CRV-B-12 20 46
61
46
CRV-B-12A 20 46
61
46
A
B
C
D
A
B
C
D
A
B
C
D