I'm really confused on my setup. I have a WoodMaster 4400. Forced air furnace with a water to air HX. My OWB runs at the setting of 170 off 160 on. I heat my domestic hot water as well. Here is my problem. The copper pipe going into the HX (inlet) is 160 degrees but the air temp coming out of my closest register will not go over 100 degrees. I've used two different types of thermometers. My HX is in the cold air side of the furnace. The air temp of the cold air is 61, on the opposite side (after it's gone through the HX) it is 106. My DH plate exchanger is transferring heat as well. Last year I was getting close to 130 degree air temp out of my registers. I'm totally lost on this. I've stuck a thermo in the water tank of the OWB thinking maybe the OWB wasnt reading the water temp right and it reads the same as the readout. Any ideas what to check next I'm about to pull my hair out???