I have two climatemaster tranquility 27 package units (4 and 2 Ton)that I installed six months ago. It is an open loop well system and they heat and cool my house perfectly. I recently had the HWG (desuperheaters) for both units teed together and piped in to an 80 gallon storage tank. I got the pipe diagram from our east coat distributer in NH, water and energy where I purchased the units. The only differnce is that I feed the HWG outputs into the cold input on the storage tank because it has a dip tub, instead of teeing onto the bottom drain valve.
I notice that the smaller units HWG output gets much warmer (85-90 degrees) than the input, and seems to work right. The larger unit never seems to get more than a couple degrees if any different. I checked the voltage and the circulators are powered. They both run about the same but the 2ton unit is definitly much hotter on the output water. I put my hand on the lines inside both the units and same results, the 2ton smaller unit is much hotter output before the circulator. Domestic cold water is fed directly into the HWG input with check valves and when there is no call for hot water, it recirculated the water in the storage tank by pulling it out of the hot side of the tank with a check valve.
Any ideas or help would be appreciated.