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Heatilator • NNXT4236IF-B, NNXT4236ILF-B, NNXT3933IF-B, NNXT3933ILF- B Owner’s Manual • 2384-981 Rev. G • 6/18
Figure 3.2 General Operating Parts
B. General Operating Parts
C. Fuel Specifications
Figure 3.2 references the general operating parts of the
appliance and the section of this manual in which they are
discussed.
WARNING!
Risk of Fire or Explosion!
Appliance must
be set up for compatible gas type!
• This appliance is designed to operate on either natural
gas or propane. Make sure the appliance is compatible
with gas type selected for installation site.
• Conversions must be made by a qualified service
technician using Hearth & Home Technologies specified
and approved parts.
Figure 3.3. Maximum Wall Surface Temperatures Above Appliance
D. Wall Surface/TV Guidelines
MEASUREMENTS FROM
TOP EDGE OF THE OPENING
6 in.
18 in.
24 in.
30 in.
36 in.
48 in.
TO CEILING
42 in.
12 in.
123°F
115°F
120°F
132°F
145°F
170°F
180°F
APPLIANCE FRONT
APPLIANCE OPENING
110°F
Figure 3.3 shows the approximate wall surface temperatures
above the center of the appliance at various heights above
the appliance opening.
DECORATIVE FRONTS
SECTION 4.B
FIXED GLASS ASSEMBLY
SECTION 4.B
MANTEL
HEARTH
(NOT REQUIRED)
CLEAR SPACE
SECTION 3.A
FAN
SECTION 6.A
CONTROL CAVITY
SECTION 3.I
NOTICE:
Temperatures listed above are taken with a
temperature measuring probe as prescribed by the test
standard used for appliance certification. Temperatures
on walls or mantels taken with an infrared thermometer
may yield increased temperatures of up to 30 degrees or
more depending on the thermometer settings and material
characteristics being measured.