Napoleon B42NTR Installation And Operating Instructions Manual page 37

MINIMUM REAR VENT CLEARANCES
For rear vent termination not exceeding 10" (254mm) of horizontal vent run.
NOTE: The vent shield is telescopic and must be adjusted to shield the full depth of the combustible
wall penetration.
REAR EXIT ENCLOSURE
The appliance requires a minimum non-combustible enclosure height of 41 5/8" (1057mm). For temperature
requirements, the enclosure space around and above the appliance must be left unobstructed.
* See "VENTING" section.
37
EN
W415-1293 / C / 07.28.16