Rough Framing Dimensions - Empire Comfort Systems Mantis Instructions D'installation

Figure 20
Index Letter Single Vent
A 19-1/2" minimum*
B
C
* When using a 2" radius 90° elbow street ell on the flue exhaust, add 5-1/2".
31793-3-1015
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ROUGH FRAMING DIMENSIONS

Direct Vent and Colinear Vent
19-1/2" minimum*
27-3/4" maximum when using FHKQ28 Surround Kit
28-1/2" maximum when using FFKQ28 Surround Kit
29-1/2" maximum when using FIKQ28 Surround Kit
32" maximum when using FWKQ28 Surround Kit
28-1/2" minimum, 31" recommended for service
33" maximum when using FHKQ28 Surround Kit
34" maximum when using FFKQ28 Surround Kit
37" maximum when using FIKQ28 Surround Kit
34" maximum when using FWKQ28 Surround Kit
Coaxial Vent
18-1/2" minimum
25" minimum
Figure 21
Flex Vent
23-3/4" minimum
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