Lg Electronics 2800HT ユーザーズマニュアル

PAGE 7 

MASONRY FIREPLACES 
This appliance is approved for installation into a ma-
sonry fireplace built to UBC 37 or ULC S628 standards. 
Do not remove brick or mortar form the masonry fire-
place to accommodate this appliance. If the fireplace 
has been modified to accommodate the fireplace insert, 
a metal tag documenting what was modified must be 
attached to the fireplace (as required by Clause 5.1.11 
it must be secured using screws or nails to the fire-
place, in a location readily visible should the fireplace 
insert be removed). The lettering shall not be less than 
5 mm high. 

THIS FIREPLACE HAS BEEN ALTERED TO AC-
COMMODATE A FIREPLACE INSERT AND 
SHOULD BE INSPECTED BY A QUALIFIED PER-
SON PRIOR TO RE-USE AS A CONVENTIONAL 
FIREPLACE 

 
IMPORTANT: Any opening between the masonry of 
the fireplace and the facing masonry must be per-
manently sealed. 
 
USA Requirements / Masonry Fireplaces - The fire-
place damper must be secured in the open position. In 
the USA, a flue extension past the fireplace header is 
required as a minimum.  A preferred installation is a 
positive flue connection (sealing the throat of the chim-
ney). This appliance requires the use of a 6” (152 mm) 
diameter flex or rigid single wall pipe, minimum 24 / 25 
MSG black or blued steel connector pipe (stainless 
steel recommended). 
 
Canada Requirements / Masonry Fireplaces - – This 
fireplace insert must be installed into an approved solid 
fuel Masonry fireplace only (installation into a factory 
built fireplace is not approved). The fireplace damper 
must be secured in the open position. The fireplace in-
sert must be installed with a continuous chimney liner of 
6” / 152 mm diameter extending from the fireplace in-
sert to the top of the chimney. The chimney liner must 
conform to the Class 3 requirements of CAN / ULC – 
S635, Standard for Lining Systems for Existing Masonry 
or Factory-Built Chimneys and Vents, or CAN / ULC – 
S640 Standard for Lining Systems for New Masonry 
Chimneys. 
 
 
 

Offsets 
Offsets can be handled with an offset adapter (it aligns 
starter pipe with fireplace flue).  For more information 
on the offset adapter, see pages 10 and 26. 
 
FIREPLACE CHIMNEY MAXIMUM SIZE TO ENSURE 
PROPER DRAFT – USA ONLY 
Note:  Installations in Canada require a full length liner. 
The fireplace insert flue size is 6 inches (152 mm) di-
ameter, which is approximately 28 square inches (711 
square mm), the minimum. The maximum flue size 
should be no more than (3) three times the cross sec-
tional area of the size of the fireplace insert flue collar. 
In this case, that would be no larger than a 10 inch (254 
mm) diameter stack (area = approx. 85 sq. inches [216 
sq. cm]). 
 
Note: Formulas for calculating Area: 
 

Calculating area of a circle:   

π

 x r

2    

= Area (

π

 = 3.1416, r = 1/2 diameter) 

 
To calculate area of square or rectangle: 
Width x Depth = Area 

 
Notes:  

 

It may be necessary to use a full-length liner to 
achieve adequate draft for the appliance. A draft 
gauge should read more than .04 W.C.I, but less than 
.08 W.C.I. for optimum performance.