United States (inches)
Model
A
B
C
D
CRV-B-2
4
12
56
12
CRV-B-4
4
12
56
12
CRV-B-6
4
12
56
12
CRV-B-8
4
12
56
12
CRV-B-9
4
12
46
12
CRV-B-10 4
12
60
12
CRV-B-12 4
12
60
12
CRV-B-12A 4
12
60
12
Canada (inches)
Model
A
B
C
D
CRV-B-2
4
10
56
10
CRV-B-4
4
10
56
10
CRV-B-6
4
10
56
10
CRV-B-8
4
10
56
10
CRV-B-9
4
12
60
12
CRV-B-10 4
12
60
12
CRV-B-12 4
12
60
12
CRV-B-12A 4
12
60
12
Canada - (centimeters)
Model
A
B
C
D
CRV-B-2
10 25
142 25
CRV-B-4
10 25
142 25
CRV-B-6
10 25
142 25
CRV-B-8
10 25
142 25
CRV-B-9
10 30
152 30
CRV-B-10 10 30
152 30
CRV-B-12 10 30
152 30
CRV-B-12A 10 30
152 30
United States (inches)
Model
A
B
C
D
CRV-B-2
4
20
48
20
CRV-B-4
4
20
48
20
CRV-B-6
4
20
48
20
CRV-B-8
4
20
48
20
CRV-B-9
4
20
40
20
CRV-B-10 4
36
60
36
CRV-B-12 4
36
60
36
CRV-B-12A 4
36
60
36
Canada (inches)
Model
A
B
C
D
CRV-B-2
4
20
48
20
CRV-B-4
4
20
48
20
CRV-B-6
4
20
48
20
CRV-B-8
4
20
48
20
CRV-B-9
4
36
60
36
CRV-B-10 4
36
60
36
CRV-B-12 4
36
60
36
CRV-B-12A 4
36
60
36
Canada - (centimeters)
Model
A
B
C
D
CRV-B-2
10 51
122 51
CRV-B-4
10 51
122 51
CRV-B-6
10 51
122 51
CRV-B-8
10 51
122 51
CRV-B-9
10 91
152 91
CRV-B-10 10 91
152 91
CRV-B-12 10 91
152 91
CRV-B-12A 10 91
152 91
14
CORAYVAC
®
HEATING SYSTEMS
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
A
B
C
D
STANDARD REFLECTOR
FIGURE 7.
United States (inches)
Model
A
B
C
D
CRV-B-2
4
12
56
20
CRV-B-4
4
12
56
20
CRV-B-6
4
12
56
20
CRV-B-8
4
12
56
20
CRV-B-9
4
12
46
24
CRV-B-10 4
12
60
42
CRV-B-12 4
12
60
42
CRV-B-12A 4
12
60
42
Canada (inches)
Model
A
B
C
D
CRV-B-2
4
10
56
20
CRV-B-4
4
10
56
20
CRV-B-6
4
10
56
20
CRV-B-8
4
10
56
20
CRV-B-9
4
12
60
42
CRV-B-10 4
12
60
42
CRV-B-12 4
12
60
42
CRV-B-12A 4
12
60
42
Canada - (centimeters)
Model
A
B
C
D
CRV-B-2
10 25
142 51
CRV-B-4
10 25
142 51
CRV-B-6
10 25
142 51
CRV-B-8
10 25
142 51
CRV-B-9
10 30
152 107
CRV-B-10 10 30
152 107
CRV-B-12 10 30
152 107
CRV-B-12A 10 30
152 107
ONE SIDE REFLECTOR
FIGURE 8.
TWO SIDE REFLECTORS
FIGURE 9.
A
B
C
D
A
B
D
C