34617 Rev D
8
01-03
NANOV TOP DV GAS APPLIANCE INSTALLATION INSTRUCTIONS
WARNING - RISK OF FIRE!
Always maintain minimum air space clearances
or greater around the chimney system. See Figure
5. Do not pack air spaces with insulation or other
material.
WARNING!
The horizontal run of vent must have a ¼ rise for
every 1 ft. of run towards the termination. Never
allow the vent to run downward. This could cause
high temperatures and may present a fire hazard.
Figure 8
Vent Lengths with Two Elbows
Figure 9
Vent Lengths with Three Elbows
Note:
Horizontal runs will require the use of one
vent support (or plumbers tape) for every 3 of vent
.
b. Assembling Vent Sections
Use only pipe supplied and listed for use with
this appliance. See page 4 for a description of
listed components. See Section 3 on page 13 for
instructions on assembling the vent sections.
WARNING!
The first 90° elbow on a top direct vent appliance
MUST be a NAVP90ST; this starter elbow includes
a deflector.
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