Installation Into A Combustible Enclosure; Framing - Napoleon NPS45 Installation And Operating Instructions Manual

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6.3

INSTALLATION INTO A COmBUSTIBLE ENCLOSURE

the stand-offs located on the back of the insert must not be removed when installing the insert into a
When installing the insert as a "built-in" heater, it is important to maintain the clearances to combustibles, see
"mINImUm ClEARANCE TO COmbUSTIblES" section.
A non-combustible hearth must cover the flooring underneath, as well as, a minimum of six inches in front and
to both sides of the heater.

6.3.1 FRAmING

a. Install floor protection.
b. Frame structure maintaining minimum clearances. locate and frame openings for both the exhaust and
outside air. Outside air is mandatory for "Enclosure" installations.
c. Refer to the vent manufacturer's installation instructions and to "GENERAl vENTING" section. Connect
the vent.
d. Install flashing. See "NPI45 FINIShING - FlAShING INSTAllATION" section.
e. Consideration must be taken during installation that removal of the insert is necessary for inspection
and annual maintenance. Install the vent cap.
40"
MINIMUM
ENCLOSURE
HEIGHT
Non
combustible
floor protection.
This protection must
offer an R value of 0.4 (two
layers of 1/2" thick cement board, total 1" with each layer rated with an
40"
R value of 0.2).
MINIMUM
ENCLOSURE
For temperature requirements, the enclosure space around and
HEIGHT
above the heater must be left unobstructed.
W415-0702 / 10.30.08
built-in combustible enclosure.
outside air is mandatory for a combustible built-in enclosure install.
fIGure 6.3.1a
3 1/2" MAX
3 1/2"
MAX
17"
33"
27"
3 1/2" MAX
3 1/2"
MAX
WARNING
!
Centerline of
heater opening
Centerline of
heater opening
WARNING
!
!
7 5/8"
fIGure 6.3.1b
8"
2 3/4"
4 1/4"
7 5/8"
8"
2 3/4"
4 1/4"