Vermont Casting 2080 사용자 설명서

7

The approved construction of a floor protector calls 
for a minimum of 24 gauge galvanized sheet metal or 
equivalent such as 7/16” Durock

®

 or Wonderboard

®

 or 

other listed floor protector. The floor protector may be 
covered with a noncombustible decorative material if 
desired. 
Custom-made floor protectors may be used if they 
offer the same protection as the approved floor protec-
tor described in the preceding paragraph. Durock

®

 or 

Wonderboard

®

 have a standard K value of 0.84.  Cus-

tom-built floor protectors must have a K value equal to, 
or less than 0.84, meaning that heat will transfer at the 
same rate or more slowly than the tested standard.
To calculate the thickness required for an alternate 
material to result in a K value of 0.84, first determine 
the alternate material’s K factor. This information should 
be available from your local building supply yard. Then, 
use the following formula to calculate the value:

NEW

required

thickness 

K of new material (per inch)

K of listed material (per inch)

thickness

of listed

material

=

x

IWF291

MBUF

6/19/96

(K factor
of alternate
material)

(0.84)

X  (7/16" [11mm]) =             

(Required thickness of

alternate material)

(5.0)

(0.84)

X  (7/16" [11mm]) = 2.6" (65mm)

Let’s use brick as an example, since it is a commonly 
used hearth material. Its K factor is 5.0.

That is, when using brick for the hearth extension, the 
brick must be a minimum of 2.6” (65mm) thick. Once 
you know the K factor of a given material, you can use 
this same formula to calculate its required thickness for 
approved hearth protection.
The WinterWarm Small Insert has two leveling screws 
at the front to accomodate hearth irregularities.

Custom-made surround panels may be made from any 
noncombustible material.
CFM Corporation offers both steel and cast iron Sur-
round panel kits, each in two sizes.
 

Steel Surround Trim Kits:
  6”, #2970 .........................36¹⁄₂” x 27” (927 x 686 mm)
  10”, #2971 .....................44¹⁄₂” x 31” (1130 x 787 mm)
Cast Iron Surround Trim Kits:
  7”, #2972 ......................40” x  28¹⁄₂” (1016 x 724 mm)
  10”, #2973 .......................45” x  31” (1143 x 787 mm)

The hardware bag included with your WinterWarm 
contains the Draw-down assembly components that 
provide a means to secure the chimney connector to 
the Insert. Be sure you have the following items:
  1, 1/4-20 x 6³⁄₄” Threaded Rod (A)
  2, 1/4” Washers  (B)
  2, Hex Head Nuts  (C)
  1, 1/4-20 x 2” Hook (D)
  1, 1” x 6” Steel Bar (E)
  1, 1/4-20 Wing Nut (F)

If codes allow, remove the damper. Many dampers can 
be removed simply by removing a cotter pin and/or a 
set screw.
If it is not permissible or possible to remove the damper, 
secure the damper in the fully open position.

fied the fireplace in any way to accommodate instal-
lation of a fireplace insert. This tag is in the hardware 
bag included with your Insert.
2.  Install the Chimney Connector System. Be sure 

any chimney connector or adapter is properly in-
stalled and secured in place.  

A

B

C

D

E

F

FP1096

WWsi

pull down parts

4/01

A

B

C

FP1095

WWsi

Hearth 

4/3/01   djt

B

 

 

A. 16“   (410 mm) 

18”   (460 mm) 

 

B.  8”   (203 mm) 

8”  (203 mm)

 

C. 41”   (1040 mm)  41”   (1040 mm)

FP1095

Fig. 5  Unless your fireplace and hearth are constructed over 
a dirt floor (or unpainted concrete over dirt), you must use a 
floor protector that satisfies the above requirements.

Shadow 

Tray