Hearth and Home Technologies A42R - Manual (Page 35)

35
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 10.1 Radiation Shield
10 10
Shrouds
• Chase top shrouds may be fi eld constructed where
permitted by regional building codes.
WARNING! Risk of Fire! Shrouds must be constructed
as specifi ed. Improper construction may overheat chase
top.
NOTICE: Some regional codes require an agency-Listed
shroud. Consult your local building offi cials.
• Hearth & Home Technologies Inc. supplies UL listed
shrouds. See your dealer for details.
• Shrouds must be constructed of minimum 26 ga sheet
metal.
A. Radiation Shield
• Some shrouds require a radiation shield. Use where
specifi ed.
3 in (76 mm)
minimum
Min.
Base Dim.
Min.
Base Dim.
Min.
Top Dim.
Min.
Top Dim.
Min. Opening
Width
Min. Opening
Width
Figure 10.2 Open Top Shroud Dimensions
B. Field Constructed Shrouds
Heatilator • A36R & A42R • 28376 • Rev AF • 11/08
TS345 TR342 TR342/344TV
Min. Base Dims.
in 23 x 23 28 x 28 26 x 26
mm 584 x 584 711 x 711 660 x 660
Radiation Shield
Required
Min. Top Dims.
in 20 x 20 25 x 25 23 x 23
mm 508 x 508 635 x 635 584 x 584
Min. Opening Width
in 17 x 17 22 x 22 20 x 20
mm 432 x 432 559 x 559 508 x 508
Open Top Shroud (TR342 & TR11/TR11T caps require radiation shield)
• Different shroud designs have been tested for Hearth Technologies fi replace systems using the TR11 and TR11T 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.