Figure 4: Universal Shield, Position 1; Figure 5: Universal Shield, Position 2; Figure 6: Universal Shield, Position 3 - Roberts Gorden CoRayVac CRV-B-12 Installation & Operation Manual

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, elbows, tees and crosses.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from
where the combustion chamber and the tube connect.

FIGURE 4: UNIVERSAL SHIELD, POSITION 1

FIGURE 5: UNIVERSAL SHIELD, POSITION 2

FIGURE 6: UNIVERSAL SHIELD, POSITION 3

Model A
CRV-B-2 4 12
CRV-B-4 4 12
CRV-B-6 4 12
CRV-B-8 4 12
CRV-B-9 8 18
CRV-B-10 8 18
CRV-B-12 8 18
CRV-B-12A 8 18
Model A
CRV-B-2 4 24
CRV-B-4 4 24
CRV-B-6 4 24
CRV-B-8 4 24
CRV-B-9 4 36
CRV-B-10 4 36
CRV-B-12 4 36
CRV-B-12A 4 36
Model A
CRV-B-2 4 12
CRV-B-4 4 12
CRV-B-6 4 12
CRV-B-8 4 12
CRV-B-9 8 12
CRV-B-10 8 12
CRV-B-12 8 12
CRV-B-12A 8 12
(inches)
B C D
12 12 11
12 12 11
12 12 11
12 12 11
24 18 21
24 18 21
24 18 21
24 18 21
(inches)
B C D
48 24 11
48 24 11
48 24 11
48 24 11
48 36 11
48 36 11
48 36 11
48 36 11
(inches)
B C D
56 30 11
56 30 11
56 30 11
56 30 11
60 42 21
60 42 21
60 42 21
60 42 21
SECTION 3: C C
RITICAL ONSIDERATIONS
(centimeters)
A B C
31 31 31
31 31 31
31 31 31
31 31 31
46 61 46
46 61 46
46 61 46
46 61 46
(centimeters)
A B C
61 122 61
61 122 61
61 122 61
61 122 61
92 122 92
92 122 92
92 122 92
92 122 92
(centimeters)
A B C
31 143 77
31 143 77
31 143 77
31 143 77
31 153 107
31 153 107
31 153 107
31 153 107
D
D
D
5