Lennox Hearth 1900HT-M Manuale Utente

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PLANNING YOUR INSTALLATION 
 
PAGE 6 
COMBUSTIBLE WALL CLEARANCE 
 
WARNING:  IT IS VERY IMPORTANT THAT YOU 
OBSERVE THE MINIMUM CLEARANCES. 
 
There are listed clearances for your stove which were 
determined in a Laboratory test using various "classes" 
of stove pipe or chimney. Minimums are first estab-
lished for the stove itself and increased based on how 
much heat is transferred by each class of pipe. 
 
Note: Manufactured (mobile) home installations require 
the use of a Type L Vent Chimney connector only. Use 
of a single wall flue pipe connection is not permitted. 
 
UNITED STATES REQUIREMENTS
 
Residential Reduced Clearance 
Use listed double wall chimney connector or Type L 
vent pipe to the top of the stove. Clearances (Inches): 
 
A. 13.6"  
C. 15" 
E. 15" * 
B. 25"  
D. 6" 
F. 5" * 
 
RESIDENTIAL STANDARD 
Does not apply to manufactured (mobile) home in-
stallations.  
Using single wall connector pipe from the 
stove top up to the chimney support box. Clearances 
(inches): 
 
A. 21.6"  
C. 18" 
E. 15" * 
B. 25"  
D. 13.75" 
F. 7.75" * 
 
MANUFACTURED (MOBILE) HOME CLEARANCE 
NOTE: Manufactured (Mobile) home installations re-
quire the use of a double wall chimney connector be-
tween the stove and the chimney as specified below. 
Use of a single wall flue pipe connection is not permit-
ted. Chimney must be Simpson Dura-Vent Dura/Plus 
chimney with manufactured (mobile) home installation 
kit (Dura-Vent part number 6DP-MH). Chimney connec-
tor between stove and chimney must be Simpson Dura-
Vent DVL close clearance connector pipe. Manufac-
tured (Mobile) Home installations must use a rain cap 
with a spark arrester. Clearances (Inches): 
 
A.13.6"  
C.15" 
E. 15" * 
B.25"  
D. 6" 
F. 5" * 
 
PROTECTED WALL CLEARANCE 
Some local codes will allow reduced clearances when the 
stove is installed adjacent to a protected wall system. The 
variance must be approved by your local building official. 
Normally, the protected wall system is defined as a non- 
combustible material with a minimum of 1" air space be-
hind. Check your local building codes or with a qualified 
installer (Ref. NFPA 211). 
CANADA REQUIREMENTS 
This appliance is not approved for installation into a 
manufactured (mobile) home in Canada. 
 
Residential Reduced Clearance 
Use listed double wall chimney connector or Type L vent 
pipe to the top of the stove. Clearances (Centimeters): 
 
A. 44.5 cm 
C. 40.5 cm 
E. 51.0 cm * 
B. 76.0 cm 
D. 25.5 cm 
F. 15.0 cm * 
 
Residential Standard 
Using single wall connector pipe from the stove top up to 
the chimney support box. Clearances (Centimeters): 
 
A. 62.5 cm  
C. 53.5 cm 
E. 51.0 cm * 
B. 76 cm 
D. 42.5 cm 
F. 27.5 cm * 
 
Corner Installation 
 
 
 
 
Parallel Installation 
 
 
 
*  Note: E and F dimensions are measured to side of 
stove below the projection of outer top.