Got to work and installed the Crosslink and plumbing to heat 1500 sq ft of slab and side leg on water heater to heat domestic water supply. Very minor couple of leaks and will finallize install next spring when things warm up and see if any tweeks need be done. Fired up last night for few hours and shutdown to check leaks and burp system and fired it hard this morning. Seems to be working good. Need some cold weather to really use its potential.