Full Product Manual
www.sureheat.com
200208-01C10
NOTICE: Model TCVFM18NL 
may be used as a vented product.  
If so, you must always operate 
log set with chimney ue damper 
open. If running log set with 
damper open, noncombustible 
material above replace opening 
is not needed. Go to Installing 
Damper Clamp Accessory for 
Vented Operation, page 11.
If Using Mantel
You  must  have  noncombustible  material(s) 
above the replace opening. Noncombustible 
materials  (such  as  slate,  marble,  tile,  etc.) 
must be at least 1/2" thick. With sheet metal, 
INSTALLATION
Figure 6 - Minimum Mantel Clearances 
Without Using Hood
Figure 7 - Minimum Mantel Clearances 
When Using Hood
Minimum
Noncombustible 
Material 
Minimum
Noncombustible 
Material Height 
Distances to 
Underside of
Mantel 
Top of
Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
8"
(A)
8" 14" 16" 20"
18" Log Set
12" 18" 20" 22" 24" 24" Log Set
All minimum 
distances are
in inches
2 
1
/
2
"
6"
8"
10"
Minimum
Noncombustible 
Material 
8"
Min.
12" 15" 18" 20"
2½"
6"
8"
10"
12"
Distances to 
Underside of
Mantel 
Hood
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
you must have noncombustible material be-
hind it. Noncombustible material must extend 
at least 8" up. If noncombustible material is 
less than 12", you must install the replace 
hood  accessory.  Even  if  noncombustible 
material is more than 12", you may need the 
hood  accessory  to  deect  heat  away  from 
your mantel shelf. See Figures 5, 6 and 7, for 
minimum clearances.
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required 
clearances  between  replace  opening  and 
mantel shelf. If you do not meet the clearances 
listed below, you will need a hood.
Determining Minimum Mantel 
Clearance
If  you  meet  minimum  clearance  between 
mantel shelf and top of replace opening, a 
hood is not required (see Figure 6).
Determining Minimum Mantel 
Clearance When Using a Hood
If minimum clearances in Figure 6 are not met, 
you must have a hood. When using a hood 
there are still certain minimum mantel clear-
ances required. Follow minimum clearances 
shown in Figure 7, when using hood.
NOTICE: Surface temperatures 
of adjacent walls and mantels 
become  hot  during  operation. 
Walls and mantels above the 
firebox  may  become  hot  to 
the touch. If installed properly, 
these temperatures meet the 
requirement of the national 
product standard. Follow all 
minimum clearances shown in 
this manual.
NOTICE: If your installation does 
not meet the minimum clear-
ances shown, you must do one 
of the following:
•  operate the logs only with the 
ue damper open
•  raise the mantel to an accept-
able height
• move the mantel










