Troubleshooting guide

PV500-23 04-2005 Section 23
8
Typical Locations for Vertical and Horizontal Vent Pipes
Vertical Venting
Figure 23-4
Horizontal Venting
Figure 23-5
• Install flue outlet and fresh air inlet with adequate separation to prevent recirculation of combustion products.
Although the National Fuel Gas Code provides minimum clearances, sound engineering judgement should be
used, considering prevailing winds, obstructions and the type vent termination used, etc.
• Either flue or remote air intake can be roof or side wall vented.
• Maximum length of remote intake ducting is 100 equivalent feet.
• See Table 23-1 for maximum length of combustion venting.