I have yet to find a diagram that matches or instructions that are directly applicable to the valve / plumbing configuration of our 2018 Tab400. Even the dealer wasn’t 100% sure of the purpose of each valve.
I have numbered them 1-4 in the attached image. Here are my attempts at identification:
#1 - low point drain, hot?
#2 - this seems to duplicate the Alde relief valve (as both valve #2 and #4 are part of the same run). When I opened it up to winterize, hot water came out.
#3 - low point drain, cold?
#4 - this is the “Alde relief valve,” This drains water out of the boiler correct?
Can anyone please help me verify?
We winterized using the blowout method, so I think we’re properly winterized, it would just help me to know the purpose of each of these valves.
Thank you so much!