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Heat & Glo • Rutherford 42-B Installation Manual • 4059-712 • Rev O • 09/28/15
6
Shrouds
3 in. (76 mm) tall legs
Ø 17 1/2 in. (444.5 mm) Round Hole to fit over cap
Length x Width to fit inside shroud
Figure 6.1 Radiation Shield
WARNING! Risk of Fire!
Shrouds must be constructed
as specified. Improper construction may overheat
chase top.
NOTICE: Some regional codes require an agency-Listed
shroud. Consult your local building officials.
Shrouds may be field constructed where permitted by
regional building codes.
The shrouds must be constructed from minimum .018
in. (26 ga) thick aluminized steel.
Some shrouds require a radiation shield. Use where
specified.
A. Radiation Shield
Radiation shield must be constructed of minimum 26 ga
thick sheet metal.
B. Field Constructed Shrouds
The following field constructed shroud designs have
been tested for HHT fireplace systems and termination
caps.
3 in (76 mm)
minimum
Min.
Base Dim.
Min.
Base Dim.
Min.
Top Dim.
Min.
Top Dim.
Min. Opening
Width
Min. Opening
Width
Radiation
Shield
14 1/2 in. (368 mm)
maximum height
Figure 6.2 Open Top Shroud Dimensions
TR11/11T
TR11/11T TV
Min. Base Dims.
in
32 x 32
26 x 26
mm
813 x 813
660 x 660
Radiation Shield
Required
Radiation
Shield Not
Required
Min. Top Dims.
in
29 x 29
23 x 23
mm
737 x 737
584 x 584
Min. Opening Width
in
26 x 26
20 x 20
mm
660 x 660
508 x 508
1. Open Top Shroud
TR11/TR11T TV (top vent) caps do not require radiation
shield.
TR11/TR11T caps require radiation shield unless in
-
stalled partially above the shroud. The TR cap must be
raised to the minimum dimensions (or greater) above the
shroud. Refer to Figure 6.3.
6" Min.
Above the
Shroud.
Storm
Collar
Shroud
Leg
(SHROUD)
(TR Series)
Flue
Shroud
Leg
3 in (76 mm)
air space from
bottom of shroud
to top of chase.
Maximum Height
14 1/2 in. (368 mm)
Chase Top
Figure 6.3 Shroud & TR Series cap with no Radiation Shield