2) I am planning on piping in the kickspace heater soon which will require me to drain the heater. I plan to add a brass t fitting 1/2"x1/2"x1/4" in-line on the second floor (I did not see a 1/2"x1/2"x1/8" brass t fitting so I will need to reduce the 1/4" to 1/8") and put in a coin vent. I don't really want to mess around with desoldering elbow fittings this close to winter. I want to do this to help me bleed the second floor after I finish soldering the kickspace heater. The second floor gave me a lot of trouble the last time I drained the heater. Would having the bleeder in-line help me?
The Spirovent must be installed in a horizontal line, situated with the air vent up.
Important note - I'm not a pro
Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014
If the near piping is correct, bleeding a fin-tube hydronic systems is easy and keeping the air out of the system even easier. We have been specifying and using micro-bubble air eliminators on all of our radiant floor and driveway heating systems for a couple of decades but this is over-kill for an old hot running baseboard system and beyond the skill-set of most DIYers and the majority of professionals for that matter.
I would plan to replace the old fin-tube and correct any near-piping errors, allowing for proper air purging at the boiler. Keyed air vents are for girls...