Final answer:
The information that must be collected for various types of space heating systems includes the manufacturer name and model number, installation date and location, and the type of fuel used.
Step-by-step explanation:
The information that must be collected for various types of space heating systems, including combination systems, includes:
- Manufacturer name and model number: This information is important for identifying the specific heating system being used.
- Installation date and location: Knowing when and where the system was installed can provide useful context and help with troubleshooting if needed.
- Type of fuel used: Different heating systems may use different types of fuel, such as natural gas, oil, or electricity. This information is essential for understanding the system's energy source.
Therefore, the correct answer is D) All of the above.