6
Montpelier Medium Insert
30004403
A,I
B
C
D,J
E
D,J
H
C E
FP1084
winterwarm
fireplace minimum dimensions
3/01
Fireplace Minimums
3” Extended
Flush Mount
Mount
A. Width at Face
27” (686 mm)
B. Width at Dimension ‘C’
22
¹⁄₂
” (572 mm) 22
¹⁄₂
” (572 mm)
C. Depth
1
17
¹⁄₂
” (445 mm) 14
¹⁄₂
” (368 mm)
D. Height at Face
21
¹⁄₂
” (546 mm) 21
¹⁄₂
” (546 mm)
E. Height at Dimension ‘C’
21
¹⁄₂
” (546 mm) 21
¹⁄₂
” (546 mm)
FP1084
Fireplace Maximums
H. Lintel depth
8
¹⁄₂
” (216 mm)
I. Width
2
41
¹⁄₂
” (1054 mm)
J. Height
2
28
¹⁄₂
” (724 mm)
1. The minimum depth must be maintained from the floor of the fireplace
to a height of 21
¹⁄₂
” (540 mm)
2. Though the Montpelier Medium Insert will fit into larger fireplaces, the
decorative optional MHSC Surround Panels will not completely cover the
fireplace opening if these dimensions are exceeded. Custom made trim
pieces may be used.
Fig. 3
Use these measurements to confirm that the Montpelier
Medium Insert will fit into your masonry fireplace.
Clearance Requirements
After confirming that your fireplace is the right size,
check the clearance to combustibles. First mark with
tape the exact center of your fireplace opening on the
hearth. Measure the side clearance from this point.
Measure the top trim and/or mantel clearances from the
finished hearth surface. Measure the front clearance (to
furnishings, etc.) from the fireplace face. (Fig. 4)
X
FP1085
WinterWarm
clearances
3/01
C
A
B
Measure
side trim
clearance
from here
FP1085
Fireplace Clearances
3” Extended
Flush Mount
Mount
A. Mantel
47
¹⁄₂
” (1207 mm) 44
¹⁄₂
“ (1130 mm)
B. Top Trim (1
¹⁄₂
”) 47
¹⁄₂
” (1207 mm) 36
¹⁄₂
” (927 mm)
C. Side Trim*
21” (533 mm)
21” (533 mm)
* Where side trim extends more than 1
¹⁄₂
” (38 mm) from the fire-
place facing, the side clearance must be no less than 26
¹⁄₂
” (673
mm); this is also the required side wall clearance.
Measure the side clearance (C) from the exact center of your fire-
place opening on the hearth (X). Measure the top trim (B) and/or
mantel clearances (A) from the finished hearth surface. Measure
the front clearance (to furnishings, etc.) from the fireplace face.
Fig. 4
Observe these clearances to combustible trim.
Hearth Requirements
In some fireplaces, the hearth in front of the fireplace
opening is brick, stone, slate, or some other non-com-
bustible material that is in direct contact with concrete
poured over earth. These are the only hearths that are
considered noncombustible. In other fireplaces, the
brick or concrete hearth in front of the fireplace opening
is supported by heavy wooden framing. Because nei-
ther brick nor concrete has good insulating properties,
heat radiated by the fire will pass downward through
the hearth to the wooden framing. Such hearths are
considered combustible.
Unless the fireplace and hearth are constructed over a
completely non-combustible surface (such as unpainted
concrete over dirt), a thermal floor protector must be
used in front of and to the sides of the door as protec-
tion against spilled coals and embers and heat radiated
from the front of the insert. Floor protectors must extend
at least 8” (203 mm) from the side of the insert, making
the protector 44
³⁄₄
” (1137 mm) wide.
In addition, the floor protector must extend from the
front door opening a minimum of 16” (406 mm) in the
United States and 18” (457 mm) in Canada. (Fig. 5)
The approved construction of a floor protector calls
for a minimum of 24 gauge galvanized sheet metal or
equivalent, and the equivalent of 1.25” (32 mm) of a
material with k-value of 0.84 or less.
Custom-made floor protectors may be used if they
offer the same protection. Millboard has a standard k
value of 0.84 and thus 1
¹⁄₄
” (32 mm) of this material is
adequate thermal protection. Custom-built floor protec-
tors must have a k value equal to, or less than 0.84,
meaning that heat will transfer at the same rate or more
slowly than the tested standard.