Monessen Hearth 424WBST - Manual (Page 16)

16
424WBST Designer Woodburning Fireplaces
87D1506
Side Wall Protection
All joints (top, bottom and sides) where wall or deco-
rative facing material meets fireplace surround must
be completely sealed with a noncombustible material.
(Figs. 20 and 24)
The special wall shield design described in Figure 20 is
an alternate method of adding protection to side walls
and can be used in place of the SP40 with the same
wall clearances specified for the SP40. Rt must =1.85
minimum.
examples of wall shield insulation:
1. Manville - CERAFORM 126, K=.27,
1/2 inches thick
2. MHSC - EH2416, K = .458,
1 inch thick required.
FP723
Fig. 23 Minimum firebox dimensions from combustible materials.
FP723
STR/CVR Side Wall clearances
6/21/98
A A
B B
C C C D
Perpendicular Side Wall
Parallel Side Wall
Minimum Dimensions to Side Walls
(for on-site construction)
Model 424WBST
Parallel Side Wall A 44"
to Movable Doors (1118 mm)
Perpendicular B 16"
Side Wall to Firebox Opening (406 mm)
Air Space to Sides C 1/2"
or Back of Unit (13 mm)