Lennox Hearth WOOD-BURNING FIREPLACES EST-50* - Manual (Page 23)

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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LENNOX HEARTH PRODUCTS • ESTATE™ SERIES WOOD-BURNING FIREPLACES • MODELS EST-36, EST-42, EST-50 • INSTALLATION INSTRUCTIONS
7" (178mm) Max.
36” & 42” models
8-1/2" (216mm) Max.
50” models
Max. Thickness of Hearth Extension
when Fireplace is on the Floor
Figure 50: Vertical Surround Limitations
fInIsh rEquIrEmEnts
There are a wide variety of “finished looks” for
these fireplaces, from formal wall decor with
elaborate mantels to rustic wood paneling or
warm brick facings.
Only noncombustible materials (such as stone,
tile, or brick) may overlap the black front facing.
Do not extend these materials beyond the black
facing and into the firebox area. Be sure not to
interfere with the installation and operation of
glass doors or block the upper or lower grilles.
Seal all joints between the black facing and
wall surrounds to prevent air intrusion. Use
noncombustible caulking material only to seal
the black metal facing to the surround material
on the finished wall.
Figure 49
The sum of all “R values” is: .70 + .10 +. 038
+ .10 = .938
This would NOT be an acceptable combination
of material for the hearth extension since the
total calculated “R value” of the materials used
is under the required “R value” of 1.19. An
additional layer of insulating materials must
be used.
Note: Also see NFI Certification Manuals for
expanded explanation on calculating “R values”
when multiple materials are used.
Secure the hearth extension to the floor to
prevent possible shifting.
WarnIng
the crack between the fireplace
and the hearth extension must be
sealed with a noncombustible
material.
WarnIng
When installing hearth extension
in front, the fireplace must be
raised if height of hearth exten-
sion exceeds 7" (178mm) above
the bottom of the fireplace (see
Figure 49).
shIppIng WEIghts
FIREPLACE FINISHES:
Vertical Surround Limitations
Combustible materials may project beyond the sides
of the fireplace opening as long as they are kept
within the shaded area illustrated below.
4-3/4"
(121mm)
3-1/4"
(83mm)
18" (457mm)
Min. Distance to
Unprotected Side Wall
12" (305mm)
Min. Distance to
Protected Side Wall
Fireplace
1/2"
(13mm)
Combustible
materials allowed
in shaded Areas
15°
Combustible materials may project beyond the
sides of the fireplace opening as long as they
are kept within the shaded areas illustrated in
Figure 50.
description cat. no. model no. Wt. (lbs)
Est-36 fireplace assembly H7955 EST-36 298
Est-42 fireplace assembly H7956 EST-42 298
Est-36/42 refractory panel Kits:
Traditional Refractory Panel Kit - Gray (unstained) H7960 BLK-EST36/42RB
289
Traditional Refractory Panel Kit - Creamer H8170 BLK-EST36/42RBCR 289
Traditional Refractory Panel Kit - Rust H8172 BLK-EST36/42RBRT 289
Traditional Refractory Panel Kit - Cappuccino H8174 BLK-EST36/42RBCP 289
Herringbone Refractory Panel Kit - Gray (unstained) H7961 BLK-EST36/42SH 301
Herringbone Refractory Panel Kit - Creamer H8171 BLK-EST36/42SHCR 301
Herringbone Refractory Panel Kit - Rust H8173 BLK-EST36/42SHRT 301
Herringbone Refractory Panel Kit - Cappuccino H8175 BLK-EST36/42SHCP 301
Est-50 fireplace assembly H7957 EST-50 330
Est-50 refractory panel Kits:
Traditional Refractory Panel Kit - Gray (unstained) H7970 BLK-EST50RB
430
Traditional Refractory Panel Kit - Creamer H8164 BLK-EST50RBCR 430
Traditional Refractory Panel Kit - Rust H8166 BLK-EST50RBRT 430
Traditional Refractory Panel Kit - Cappuccino H8168 BLK-EST50RBCP 430
Herringbone Refractory Panel Kit - Gray (unstained) H7971 BLK-EST50SH 456
Herringbone Refractory Panel Kit - Creamer H8165 BLK-EST50SHCR 456
Herringbone Refractory Panel Kit - Rust H8167 BLK-EST50SHRT 456
Herringbone Refractory Panel Kit - Cappuccino H8169 BLK-EST50SHCP 456