Final answer:
Wall furnaces must be located to prevent hazards to human health. It is important to ensure that the furnace is properly installed and vented in order to avoid the release of harmful pollutants into the indoor air. Carbon monoxide, for example, is a dangerous gas that can be emitted by faulty furnaces and can cause serious health issues, including lung cancer.
Step-by-step explanation:
Wall furnaces must be located to prevent hazards to human health. It is important to ensure that the furnace is properly installed and vented in order to avoid the release of harmful pollutants into the indoor air. Carbon monoxide, for example, is a dangerous gas that can be emitted by faulty furnaces and can cause serious health issues, including lung cancer. It is also important to follow safety measures when using any heating device to prevent accidents or fires.