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Re: single zone hot water baseboard heat... how to reduce heat in "first" room of the series?
That would be a pretty complicated solution not to mention expensive. Closing the lover on the convector does work sometimes. Another way to stop convection is to cover the aluminum fins with tin foil. Pull of a sheet and cover the front back and top on the fins inside the metal covers.
Grallert
Re: What is this - maybe not heating related?
Maybe this…
Bottom of the first screenshot says the 'Nason' Trap of this type is best known. Second shot has a drawing that could be it… Credit to "Stem Heat for Buildings", John Baldwin, 1893
Re: Ways to Tamper-Proof 4" Outside Sewerline cleanout cap
they usually are threaded or a bayonet. i'd use a pvc cap so it doesn't seize. you can get a cap with a square recess or slot that needs a special tool if you don't thing a square drive is secure enough
mattmia2
Re: Heating zone/pump issue
One question @Kaos asked was flow direction? We need to know which model boiler. Are the connection locations different on the two combi models?
On this Navian combi, from the installation manual, the boiler out S, and boiler return R, are on opposite sides of the case. Center two connections are DHW.
In the OPs installation pics it look like the connection for heating are on the left? If so which is boiler S and boiler R? Hard to see from that camera angle.
hot_rod
Re: Heating zone/pump issue
Ok. The flow is the right way and the plumbing is proper primary secondary loop. You don't need the boiler on closed space Ts for this setup, what you have there is good.
Assuming no air lock and pumps are OK, maybe the issue is the way over pumped setup. If you turn off all the zones and only run the one that has no heat, does it work? If this works but when you turn on a zone upstream of it, you loose all heat, the problem is the previous zone is flowing too much and using the full capacity of the boiler. If this is the case, the easy fix is to throttle the pumps with the isolation valve on the outlet of it.
If running the zone by itself does not generate heat (assuming primary loop is hot), the problem is air locked zone, gummed up piping or bad pump.
Kaos
Re: Ways to Tamper-Proof 4" Outside Sewerline cleanout cap
Teenagers & drunkards outside the pubs will try to kick pipes off the wall, but aren't Hellbent on sabotaging your sewer line . Can you show us a picture? Mad Dog