System: closed hydronic system with Buderus oil fired cast iron boiler and Buderus 50+ gal indirect hot water tank with cathodic protection (electric)
Age: Installed new 2004
Problem: No boiler water flowing through the 1 1/2" copper manifold.
Description of System: Manifold feeds 4 radiant heat zones with PEX and ONIX tubing and 2 fin tubed baseboard zones. PEX is encased in the concrete basement floor. ONIX is staple up radiant heat and used to connected the fin tubing.
Cause: 1 1/2" Spirovent screen was found to be plugged. The photos show the 1 1/2" manifold, Spirovent, Spirovent screen and water being flushed from system.
Solution: Replaced Spriovent screen and a new head on Spirovent. Now the water is flowing through the manifold.
Question: Why is there so much particulate matter in the boiler water? So much it plugged the Spirovent. Where is the stuff coming from and why.