Vanguard PRVYS18PWA Owner's Operation And Installation Manual page 8

VANGUARD FLAME-MAX
UNVENTED PROPANE/LP GAS LOG HEATER
INSTALLATION
Continued
Minimum Non-combustible
Material Clearances
If Not Using Mantel
You must have non-combustible material(s)
above the fireplace opening. Non-combus-
tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have non-combus-
tible material behind it. Non-combustible
material must extend at least 8" up (for all
models). If non-combustible material is less
than 12", you must install the fireplace hood
accessory (24", 30", and 36" models only).
See Figure 4 on page 7 and Figure 5 for
minimum clearances.
IMPORTANT: If you cannot meet these
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.
If Using Mantel
You must have non-combustible material(s)
above the fireplace opening. Non-combus-
tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have non-combus-
tible material behind it. Non-combustible
material must extend at least 8 inches up (for
all models). If non-combustible material is
less than 12", you must install the fireplace
hood accessory (24", 30", and 36" models
only). Even if non-combustible material is
more than 12", you may need the hood
accessory to deflect heat away from your
mantel shelf. See Figure 5 and Figures 6 and
7, page 9, for minimum clearances.
IMPORTANT: If you cannot meet these
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.
Non-Combustible
Material Distance (A)
12" or more
Between 8" and 12"
Less than 8"
Heat Resistant
Material
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
8
®
Requirements for
Safe Installation
Non-combustible material OK.
24", 30", or 36" Models: Install fireplace hood accessory
(GA6050, GA6052, or GA6053 see Accessories, page 30).
18" Model: Non-combustible material OK.
Non-combustible material must be extended to at least 8".
See Between 8" and 12", above. If you cannot extend
material, you must operate heater with flue damper
open.
(A)
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