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CRV-SERIES DESIGN MANUAL
8
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 8: 2-FOOT DECO GRILLE
(inches) (centimeters)
Model A B CDABCD
CRV-B-2 4 12 48 12 11 31 122 31
CRV-B-4 4 12 48 12 11 31 122 31
CRV-B-6 4 12 48 12 11 31 122 31
CRV-B-8 4 12 48 12 11 31 122 31
CRV-B-9 4 18 56 18 11 46 143 46
CRV-B-10 4 18 56 18 11 46 143 46
CRV-B-12 4 18 56 18 11 46 143 46
CRV-B-12A 4 18 56 18 11 46 143 46
A
B
C
D
FIGURE 9: BARRIER SHIELD
(inches) (centimeters)
Model A B CDABCD
CRV-B-2 4 12 12 12 11 31 31 31
CRV-B-4 4 12 12 12 11 31 31 31
CRV-B-6 4 12 12 12 11 31 31 31
CRV-B-8 4 12 12 12 11 31 31 31
CRV-B-9 - UNAPPROVED - - UNAPPROVED -
CRV-B-10 - UNAPPROVED - - UNAPPROVED -
CRV-B-12 - UNAPPROVED - - UNAPPROVED -
CRV-B-12A - UNAPPROVED - - UNAPPROVED -
C
A
B
D
FIGURE 10: PROTECTIVE GRILLE
(inches) (centimeters)
Model A B CDABCD
CRV-B-2 4 20 48 20 11 51 122 51
CRV-B-4 4 20 48 20 11 51 122 51
CRV-B-6 4 20 48 20 11 51 122 51
CRV-B-8 4 20 48 20 11 51 122 51
CRV-B-9 4 36 60 36 11 92 153 92
CRV-B-10 4 36 60 36 11 92 153 92
CRV-B-12 4 36 60 36 11 92 153 92
CRV-B-12A 4 36 60 36 11 92 153 92
A
B
C
D