Central Boiler recommends a 30-minute test at 50psi of air pressure before filling the boiler. After considerable reflection, I came upon this really simple bit of hardware. The thermostatic valve installation kit comes with two hose-bib fittings (and their caps) for filling with water. I modified one of the caps to do my pressure test.
View attachment 261542
Pretty clever, I think - if it works...
Jon
View attachment 261542
Pretty clever, I think - if it works...
Jon