Page 112

Iowa LIHEAP Policy and Procedures Manual Appendix H – Heating System Installation Standards

Effective 09/01/2023

Page | 106

FIGURE 1

● Floor Supply Combustion Air A floor supply, sealed combustion air system supplies combustion air directly to the heat exchanger through a duct from under the manufactured home. (See Figure 2)

FIGURE 2

● Dual Pipe Combustion Air A dual pipe, sealed combustion air system supplies combustion air to the heat exchanger from above the manufactured home through a separate pipe. (See Figure 3)