OWNER'S OPERATION AND INSTALLATION MANUAL WINCHESTER OAK UNVENTED (VENT-FREE) GAS LOG HEATER CGS2718PA, CGS2718NA, CGS3124PA, CGS3124NA SGS3124PA, SGS3124NA, CLD3018PTA, CLD3018NTA CLD3924PTB,CLD3924NTB

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10
If Using Mantel
You must have noncombustible material(s) above
the fireplace opening. Noncombustible materials
(such as slate, marble, tile, etc.) must be at least 1/2
inch thick. With sheet metal, you must have non-
combustible material behind it. Noncombustible
material must extend at least 8 inches up (for all
models). If noncombustible material is less than 12",
you must install the fireplace hood accessory (24"
model only). Even if noncombustible material is
more than 12", you may need the hood accessory
to deflect heat away from your mantel shelf. See
Figure 5 (see page 9), Figure 6 and Figure 7 (see
page 11) for minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chim-
ney flue damper open. Go to Installing Damper
Clamp Accessory for Vented Operation, page 12.
MANTEL CLEARANCES
In addition to meeting noncombustible material
clearances, you must also meet required clearances
between fireplace 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 fireplace opening, a hood is not
required (see Figure 6).
INSTALLATION
Continued
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 clearances re-
quired. Follow minimum clearances shown in Fig-
ure 7, page 11, when using a hood.
NOTICE: Surface temperatures
of adjacent walls and mantels
become hot during operation.
Walls and mantels above the fire-
box may become hot to the touch.
If installed properly, these tem-
peratures 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
flue damper open
• raise the mantel to an accept-
able height
• remove the mantel
Figure 6 - Minimum Mantel Clearances Without Using Hood
Minimum Non-
Combustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
12"
8"
(A)
18"
8"
20"
14"
22"
17"
24"
20"
All minimum
distances are
in inches
Log Set
24" Model
18" Model
2
1
/2
"
6"
8"
10"