Hht Shrouds - Heatilator NNXT4236IF Installation Manual

G. HHT Shrouds
• You may install a HHT shroud with this fi replace. See Section 12.A for a list of UL Listed shrouds. Follow the instructions
included with these optional components
Field Constructed Shrouds
WARNING! Risk of Fire! Shrouds must be constructed as
specifi ed. Improper construction may overheat chase top.
• Chase top shrouds may be fi eld constructed where permitted by regional building codes.
NOTICE: Some regional codes require an agency-Listed
shroud. Consult your local building offi cials.
• The following fi eld constructed shroud designs have been tested for Hearth Technologies fi replace systems and termination
caps.
• The shrouds must be constructed from a minimum .018 in. (26 ga) thick aluminized steel.
• The wire mesh is optional but recommended and must be .018 in. thick minimum, 1/2 in. mesh.
Open Top Shroud (may be used with DVP-TV, DVP-TVHW, SLP-TVHW)
Min.
Top Dim.
Min.
Top Dim.
Min.
Base Dim.
Figure 7.17 Open Top Shroud Dimensions
Heatilator • NNXT4236IF, NNXT4236ILF, NNXT3633IF, NNXT3633ILF Installation Manual • 4055-980 Rev. D • 9/15
Min.
Base Dim.
Min. Base Dims.
in 19 x 19
mm 483 x 483
Min. Top Dims.
in 16 x 16
mm 406 x 406
35