In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Will Series-100 push water farther than NRF-22?
(Reposting as a new thread).
I recently noticed that the baseboard radiator on the 3rd floor of my house is stone cold.
We have not used this room since before Christmas, when the radiator was working fine.
On Christmas Day, I swapped out my Series-100 with an NRF-22 which was the start of a previous post of mine. That is the only change I have made to the system.
So does the NRF-22 not have enough head to push water to this radiator?
It is the furthest one from the boiler (located in the basement).
The other radiator on the third floor is a large free-standing one and it heats up fine.
The two third floor radiators are on the same zone as the second floor radiators, but there are two sets of pipes to these 3rd floor radiators.
The warm 3rd floor radiator is served by pipes that branch to two other radiators on the second floor (both have TRVs turned all the way down).
The cold 3rd floor radiator is served by different pipes that branch to three other radiators on the second floor (two on full blast, one limited by a TRV but not turned down).
I have ordered a replacement coupler for my Series-100 and will swap it back in to see if that solves this problem.