The failure of a vent pipe can be deadly because the building occupants could be subjected to carbon monoxide poisoning. Besides gas poisoning, there are many other hazards from improperly designed vents. Masonry chimneys can collapse from the acid in the condensate dissolving the mortar between bricks and possibly causing a fire. Condensate can accumulate back at the furnace and cause severe rusting. There are so many potential problems with incorrect venting, that all contractors should make every effort to do the job right.
All input data is checked at the time of entry so that no improper data can be entered.
If you have a question about what the program is requesting, you can press the F1 key for context sensitive help. Additionally, there is a Hypertext feature that links all help information together. The customer information includes the customer name, address, city, state, and phone number. The same data is requested for each appliance in multiple appliance situations. All data is saved to disk and can be reviewed and edited whenever desired.