The water heater is rated at 11,000 to 199,000 Btu/hour gas input, has a maximum hot water delivery (at a 45Â°F temperature rise) of 8.4 gpm, and has a minimum flow rate of 0.26 gpm. There are two primary types of water heaters: storage and tankless.n the case of electric storage tank water heaters the wall loss is less than 10% of total water heater energy use. Conventional gas fired storage water heaters DO have very high standby losses, but that has little to do with tank wall insulation but LOTS to do with convective loss up the central flue.
Treatments and drugs. Poison ivy treatments are usually limited to self-care methods. And the rash typically goes away on its own in two to three weeks. If the rash is widespread or results in a large number of blisters, your doctor may prescribe an oral corticosteroid, such as prednisone.
Poison ivy, oak, and sumac facts. 1  Poison ivy, poison oak, and poison sumac are plants than can cause an itchy rash upon contact. 2  A substance called urushiol, found in these plants, causes the rash. 3  The rash is not contagious.4  The rash usually disappears in one to three weeks.icture of poison ivy. Poison oak (Toxicodendron diversilobum) grows as a vine or shrub, and it is found in the western United States and British Columbia. It also has a leaf arrangement similar to poison ivy, with clusters of three leaflets. The leaves may sometimes resemble true oak leaves.