Vermont Casting 2080 사용자 설명서

4

Installing the WinterWarm Small Insert into an existing 
masonry or factory-built fireplace is an effective way to 
add an efficient heater to your home. The existing fire-
place and chimney must meet certain requirements.

The WinterWarm Small Insert is listed for installation 
within a properly built masonry or heat circulating, ma-
sonry-type fireplace that is constructed in accordance 
with the requirements of recognized building codes. A 
heat-circulating masonry-type fireplace must conform 
to building code standards for masonry fireplaces, and 
must consist of a factory-built metal firebox with air 
circulation pathways that are surrounded by masonry 
materials. Air circulation pathways must not be blocked 
by the insert or surround panels.
The fireplace and chimney must be clean and structur-
ally sound. Have them inspected by a qualified pro-
fessional chimney sweep, a mason, or your Vermont 
Castings’ Authorized Dealer before the WinterWarm 
Small Insert is installed. Any deterioration (cracks, loose 
mortar or loose bricks) must be repaired.
Codes may permit removal of the damper in order to 
make a positive connection for the vent between the 
firebox and the chimney. However, the fireplace should 
not be modified in any way without first checking with 
your local building inspector or fire marshal. Provision 
should be made to restore the fireplace to its original 
condition if the insert is removed. Do not remove bricks 
or mortar that may jeopardize the compliance of the 
fireplace with local building codes.
The WinterWarm Small Insert is also listed for installa-
tion in tested and listed factory-built fireplaces. Listings 
for factory-built fireplaces include meeting standards 
for both the firebox and chimney. Review the owner’s 
manual, and inspect the fireplace for metal tags or 
labels which give information concerning installation of 
inserts into the factory-built fireplace. Codes may permit 
removal of the damper in order to  install a chimney 
liner. Codes may also permit removal of external trim 
pieces which do not affect the operation of the unit, as 
long as the pieces are stored on or within the fireplace 
for re-assembly if the insert is removed.  Air flow within 
and around the fireplace shall not be altered (louvers 
or cooling air inlet or outlet ports may not be blocked). 
Louvered surrounds are permitted.  Again, check with 
local authorities before making any modifications. 

Chimney requirements differ for the U.S. and Canada.  
Specifications for each are listed below. Connect the 
insert to the chimney in accordance with local codes 
and the requirements of the listing agency as specified 
in this manual.

Chimney height should be no less than 15’ (4.5m) 
above the hearth and no more than 35’ (10.5m).
The chimney should extend at least 3’ (914m) above 
the highest point where it passes through a roof, and at 
least 2’ (610mm) higher than any portion of a building 
within 10’ (3m). (Fig. 2)

• 

A connector must extend from the flue collar  
to the flue liner.

• 

The cross sectional area of the flue must be less  
than or equal to three times the area of the flue  
collar. If larger, the chimney must be re-lined.

• 

Means must be provided to prevent room air  
passing to the chimney cavity.

• 

Provision must be made for removal of the  
insert to clean the chimney flue.

2' Min.

2' Min.

3'

Min.

0 To 10'

3'

Min.

0 To 10'

AC617

RLTSKC8

2/11/98

AC617

Reference 

Point

Fig. 2  The 2’-3’-10’ rule for chimneys.