I recently had my hot water storage tank fail and removed it from the system completely. I replaced it with a passive mixing valve straight off the boiler. My boiler is oil fired and was installed in the late 90s. This unit also feels the baseboard heat in the 2 story 1800 sqft home.
things seems to be running fine for a couple of months. However is seems within the last few months my water temps have been fluctuating greatly.
temps at the showers and faucets seem to take forever to warm up, sometimes the shower only gets luke warm and sometimes scalding hot. It does seem like the water pressure drops slightly when the temp drops to luke warm to barley tolerable cold
I have tried adjusting the dial on the mixing valve and that outdoes seem to help much. There are only two people in the house, and I have the same problem with running nothing but the baseboard heat for hours and hours before. I am not sure if the cold New England weather would affect it at all.
I'm at a loss here guys. can anyone shed some light. any help is much appreciated