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What are those on my heating furnace?

thomagr
thomagr Member Posts: 28
edited December 2024 in Gas Heating

Hi - Recently moved into a new home and still trying to figure out my furnace situation.

Could anyone help me figure out what are the components in 1, 2, 3 and 4?

#1 seems to be the water arrival, though it is currently closed. So I assume it is only to top it up myself when necessary?

Given #4 is tubbed in an empty bucket, I assume this is to release water in case of too high pressure in the system? Am I right? What is #3?

I have also no idea what #2 is. It's basically leading to the orange pipe in the back, which opening point to the floor (with nothing to catch what could come out of it). Interestingly, #2 and #4 are technically on the same segment… what for?

Finally, my pressure gauge never goes above 5psi, cold or hot. I've read that for a 3-story house, it should be in the 15psi. Is that accurate? We are still getting heat, so not sure what this is worth. How would I increase pressure if needs be?

Thanks in advance!

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