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2 days of vacuum

Fizz
Fizz Member Posts: 547
Replaced dry return vents(Richardson System only has vents on dry) with vacuum vents 2 days ago and set thermostat to hot water(3cph). Results very good. Steady heat, and comfortable heat in 2 rooms which never got to comfort level. In midst of sub-zero night temp and worked fine. Took the advice of PMJ. Will see what rest of season shows. Was concerned because system 100 yr old, and 3 rads were add-ons with regular traps.