I have a 6 Ton Waterfurnance Envision Unit with DeSuperHeater (DSH) in the vertical configuration. Earlier this spring when the unit was cooling, I noticed standing water around the unit (maybe a gallon??). It looked like it was seeping out from the bottom of the access door. I checked the drip pan and all associated piping. The sweat from the coils was draining properly into the pan and out the piping with no leaks. The coil compartment walls and bottom were all bone dry. The only wet area I found (other than the coils and drip pan itself) was the floor of the DSH compartment. Less than 1/8 inch standing water was laying in the bottom of the unit (where the DSH coils and piping are located). I cleaned up the water and it stayed dry.
It's been about 2 months, I just returned from a week vacation and again found the exact same thing. To my knowledge this is only the second time its happened. What could be causing this? Could my DSH be freezing up and sweating? What should I do next?
- The unit is cooling perfectly.
- This is its third cooling season. (It was installed new about 3 years ago)
- it does not seem to be drawing more power or running longer than my historical data logger charts show.
- I currently turned the DSH off just in case.
- Regarding my DSH. In the winter it works so good, I only need my WH coils set to 90 degrees to get 130 degree water. During the cooling seasons, I have to turn the temperature to 115 degrees or better because unless it is an extremely hot day, the DSH doesn't produce enough hot water. This has been the case ever since I've had the unit. I have an 80 gal fiberglass HW tank.
In case you are wondering, why I didn't do anything the first time, its because, I thought my steam humidifier had leaked and overflowed since I wasn't sure how long the water had been there. Since it just happened again and my humidifier is powered off and the water valve closed I know that wasn't it.
Any thoughts would be greatly appreciated!!! Thanks.