Heatilator NNXT4236-B-KIT User manual

1
Heatilator • NNXT Upgrade Kit • 2385-955 • 1/16
Models: NNXT3933IF-B, NNXT3933ILF-B, NNXT4236IF-B, NNXT4236ILF-B
NNXT Upgrade Kit
NNXT4236-B-KIT, NNXT3933-B-KIT
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during instal-
lation. Sheet metal edges are sharp.
DANGER
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
A barrier designed to reduce the risk of
burns from the hot viewing glass is provided
with this appliance and shall be installed for
the protection of children and other at-risk
individuals.
KIT CONTENTS:
Figure 1. Kit Contents
A. Embers
B. Flue Visor
C. Hearth Pan
D. False Back
E. Pilot Shield
F. Logs
G. Refractory
B
B
A
A
C
C
D
D
F
F
E
E
G
G

2Heatilator • NNXT Upgrade Kit • 2385-955 • 1/16
See Table 1 for corresponding log set and individual logs
for each size Novus model.
CAUTION: Logs are fragile, handle with care.
SIZE 3933 4236
ASSEMBLY SRV2384-070 SRV2385-070
LOG 1 SRV2384-071 SRV2384-071
LOG 2 SRV2380-072 SRV2381-072
LOG 3 SRV2384-073 SRV2385-073
LOG 4 SRV2380-074 SRV2382-074
LOG 5 SRV2384-075 SRV2385-075
LOG 6 SRV2384-076 SRV2385-076
Table 1.
5. Install the logs on the hearth pan as shown below:
Figure 6. Log Fastener Locations on Base Pan
FASTENERS-LOG #1
FASTENERS-LOG #1
FASTENERS-LOG #2
FASTENERS-LOG #2
FASTENERS-LOG #3
FASTENERS-LOG #3
See Figure 1 for locations of fasteners for each log.
2. Remove the pilot shield. See Figure 3.
3. Remove the flue visor. See Figure 4.
4. Remove the false back. See Figure 5.
Figure 3.
Figure 4.
1. Remove the hearth pan and log set. See Figure 2.
Figure 2.
Figure 5.

3
Heatilator • NNXT Upgrade Kit • 2385-955 • 1/16
Figure 9. Log #4 in Position
1
1
1
1
Figure 7. Log Set Shown Assembled
Figure 8. Locations of Flat Spots for Log #4
2
2
2
2
1
1
2
2
3
3
FLAT SPOTS FOR LOG #4
FLAT SPOTS FOR LOG #4
LOG #4: Place Log #4 into position by setting the left end
of Log #4 into the flat spot on Log #2 and then resting the
right end, or nose, of Log #4 on the flat spot on Log #1.
Figure 3 shows locations of flat spots. Figure 4 shows
Log #4 installed.
4
4
Log #5: Place Log #5 into position. The forked end of
Log #5 is positioned on the log pins as shown in Figure
11. The back end of Log #5 will rest on Log #4, but does
not touch Log #1.
LOG PINS
LOG PINS
Figure 10. Log Pin Locations
Figure 11. Log #5 in Position
DOES NOT TOUCH LOG #1
DOES NOT TOUCH LOG #1
1
1
5
5
LOG PINS
LOG PINS

4Heatilator • NNXT Upgrade Kit • 2385-955 • 1/16
Figure 13. Log Set Installed
4
4
5
5
1
1
1
1
2
2
3
3
3
3
6
6
Figure 12. Locations of Flat Spots for Log #6
Log #6: Place Log #6 into position by setting the large
end on the flat spot in Log #3 and then resting the small
end on the flat spot on Log #1.
6. Assemble new false back. See Figure 14.
Heatilator, a brand of Hearth & Home Technologies
7571 215th Street West, Lakeville, MN 55044
www.heatilator.com
Figure 14.
Figure 17.
Figure 15.
Figure 16.
9. Install hearth pan. Place into appliance.
10. Add embers and lava rock following the instruc-
tions in the appliance installation manual.
11. Install the two top logs as shown in the log instruci-
tions on previous pages.
7. Install new flue visor. See Figure 15.
8. Install pilot shield. Pilot shield is assembled on top of
pilot assembly. See Figure 16.