Heatilator CNXT4236IT-D Owner's Manual page 32

Top Vent - Vertical Termination (continued)
5. Orientate and align the two pieces of the flue restrictor
as shown in Figure 7.13.
TOP
REFRACTORY
Figure 7.11
6. Match the amount of vertical you have in the system
with the chart to find the appropriate position to set the
flue restrictor. See Figure 7.12 and 7.13.
7. Center the two flue restrictor pieces on the vent at the
setting selected in step 6 and secure in place by using
two self-tapping screws. See Figure 7.11.
TOP VENT
Vertical
NG
4 ft. 1-1
Restrictor
8 ft. 2-2
15 ft. 3-3
20 ft. 3-3
25 ft. 3-3
30 ft. 3-4
35 ft. 3-4
40 ft. 3-4
50 ft.+ 3-4
Figure 7.12
32 Heatilator • CNXT4236IT-D, CNXT4842IT-D, CNXT4236IH-D, CNXT4842IH-D • 2360-900 Rev. i • 5/17
FLUE
RESTRICTOR
REAR VENT
LP NG LP
No No No
Restrictor Restrictor
No
1-2 1-1
Restrictor
3-2 2-2 1-2
3-3 3-3 2-3
3-3 3-3 2-3
3-3 3-3 3-3
3-4 3-4 3-3
3-4 3-4 3-4
3-4 3-4 3-4