Heatilator NNXT4236IF-B Installation Manual page 57

A. Vent Components Diagrams (continued)
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm). The heat shield is designed to be
used on a wall 4 in. to 7-1/4 in. (102 mm to 184 mm) thick. If wall thickness is less than 4 in. (102 mm) the
existing heat shields must be field trimmed. If wall thickness is greater than 7-1/4 in. (184 mm) a DVP-HSM-B
will be required.
15-1/8 in.
(384 mm)
DVP-TRAP
Horizontal Termination Cap
Figure 12.2 DVP Vent Components
Heatilator • NNXT4236IF-B, NNXT4236ILF-B, NNXT3933IF-B, NNXT3933ILF-B Installation Manual • 2384-980 Rev. J • 6/17
(203 mm)
12 in.
(305 mm)
DVP-TRAP1
DVP-TRAPK1
DVP-HPC1
8 in.
Heat
Shield
Max
Effective
Length
Minimum
Term Cap
Effective Length
3-1/8 in.
Trap1
79 mm
5-3/8 in.
Trap2
137 mm
DVP-TRAP2
DVP-TRAPK2
DVP-HPC2
Maximum
Effective Length
4-5/8 in.
117 mm
9-3/8 in.
238 mm
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