34617 Rev D
14
01-03
NANOV TOP DV GAS APPLIANCE INSTALLATION INSTRUCTIONS
Figure 24
Figure 25
F. UTILITIES
1. HIGH ALTITUDE INSTALLATION
For U.S. installation, appliances are tested and approved for elevations from 0-2000 feet. When installing this appliance
at an elevation above 2000 feet, National Fuel Gas Codes require a decrease of the input rating by changing the
existing burner orifice to a smaller size. Input should be reduced 4% for each 1000 feet above sea level. Check with
the local gas utility for proper orifice size identification. Orifices are available from your Heatilator distributor.
For Canada, appliances are certified for elevations from 0-4500 feet. When installing this appliance at an elevation
between 0-4500 feet in Canada, the input rating does not need to be reduced. When installing this appliance at an
elevation above 4500 feet in Canada, check with local authorities.
2. GAS LINE CONNECTION
The appliance is provided with a stainless steel flexible connector and manual shutoff valve. See Figure 26. The
incoming gas line should be piped into the valve compartment and connected to the 1/2 FIP connection provided on
the manual shutoff valve. All connections must be tightened and checked for leaks with a soap and water solution
or leak detector. Bleed the gas line to extract any air that may have been trapped inside the pipe. See Figure 27 to
connect the gas line. Gas connections may also be made by taking out the knockout in the bottom pan to allow
connection through the bottom of the appliance.
d. Assembling the Slip Sections
Slip sections should be snapped into the first
mating piece, then expanded to their desired
length, making sure that a 1.5 overlap is
maintained between the two sections of the slip
section. The sections need to be secured by
driving two screws through the overlapping
portions of the vent. See Figure 24. This will
secure the slip section to the desired length and
prevent it from separating. The slip section can
then be attached to the next section of vent.
e. Disassembling Vent Sections
(only if necessary)
To disassemble any two pieces of pipe, rotate
either section so that the seams on both pipe
sections are aligned as shown in Figure 25. They
can then be carefully pulled apart.
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