Shrouds; Radiation Shield; Field Constructed Shrouds; Open Top Shroud - Heatilator A36R Installation Manual

6

Shrouds

WARNING! Risk of Fire! Shrouds must be constructed
as specified. Improper construction may overheat
chase top.
Shrouds may be field constructed where permitted by
regional building codes.
NOTICE: Some regional codes require an agency-Listed
shroud. Consult your local building officials.
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.
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
B. Field Constructed Shrouds
The following field constructed shroud designs have
been tested for HHT fireplace systems and termination
caps.
Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15
3 in. (76 mm) tall legs

1. Open Top Shroud

TR342/344 TV (top vent) caps do not require radiation
shield.
14 1/2 in. (368 mm)
maximum height
3 in (76 mm)
minimum
Min. Opening
Base Dim.
TS345
in 23 x 23
mm 584 x 584
in 20 x 20
mm 508 x 508
in 17 x 17
mm 432 x 432
TR342 caps require radiation shield unless installed par-
tially above the shroud. The TR cap must be raised to
the minimum dimensions (or greater) above the shroud.
Refer to Figure 6.3.
(TR Series)
Maximum Height
14 1/2 in. (368 mm)
Shroud
Leg
Figure 6.3 Shroud & TR Series cap with no Radiation Shield
Min.
Top Dim.
Min.
Top Dim.
Min.
Width Base Dim.
Min.
TR342/344TV/
TR342 TR-7VK
Min. Base Dims.
28 x 28 26 x 26
711 x 711 660 x 660
Radiation

Radiation Shield

Shield Not
Required Required
Min. Top Dims.
25 x 25 23 x 23
635 x 635 584 x 584
Min. Opening Width
22 x 22 20 x 20
559 x 559 508 x 508
6" Min.
Above the
Shroud.
Storm
(SHROUD)
Collar
Shroud
Leg
Flue
3 in (76 mm)
air space from
bottom of shroud
Chase Top
to top of chase.
Radiation
Shield
Min. Opening
Width
25