Clearances To Combustibles; Insert Leveling - Lennox Hearth Products Merit Series Installation And Operation Manual

Minimum Clearances to Combustibles
Minimum clearances include any projections such as shelves, window
sills, mantels, spacers/standoffs or surfaces to combustible construction
etc. above the appliance. Paint or lacquer used to finish the mantel
must be heat resistant in order to avoid discoloration.
The letters below, E through J, correspond to Figure 4 showing minimum
clearances required from the appliance to combustibles and the minimum
projection of the hearth extension.
E = 31-1/2" (800 mm) from Top Facing to Bottom of Insert
F = 25-1/2" (648 mm) from Center of Glass to Side Facing or Side
Wall
J = 39" (991 mm) from 10.5" (267 mm) Mantel to Bottom of Insert
Hearth Protection
G = Minimum Hearth Protection from Front of Insert*
H = Vertical Distance from Insert Bottom to Combustible Material.
G 13"(330mm)
H 0"(0mm)
Note: Hearth protection to be min. 3/8" (10mm) thick non-combustible
or equivalent, with a k factor of .84.
Insert Leveling
At each front and rear corner of the insert is an adjustable leg provided
to level the insert should the hearth of the fireplace be uneven. To adjust
the legs, loosen the two 5/32" allen head screws, move the leg to the
desired height and then tighten the screws. Repeat these steps for each
adjusting leg.
8
10"(254mm) 0"(0mm)
2"(21mm) 4"(102mm)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Facing and Mantel Clearances
3"/76mm
1-1/2"
38mm
33-1/2"
851mm
31-1/2"
800mm
Figure 4
Clearances
MANTEL
Mantel
TRIM
Trim
E
G
Hearth / Floor Protection
Figure 5
3"/76mm
3"/76mm
Facing and
Mantel
Side View
39-1/2"
1003mm
36-1/2"
927mm
F
J
C L
H